SIP Working Group
   Internet Engineering Task Force                            K. Lingle, Lingle
   Internet Draft                                         Cisco Systems, Inc.,
draft-ietf-sip-mib-01.txt Systems
   Document: draft-ietf-sip-mib-02.txt                         J. Maeng,
July 2000 Maeng
   March 2001                                                VTEL Corp., Corp.
   Expires: January September 2001                                    J-F. Mule
                                                          Clarent Corp.
                                                              D. Walker, Walker
                                                     SS8 Networks, Inc.

                        Management Information Base
                      for Session Initiation Protocol

Status of this Memo

   This document is an Internet-Draft and is in full conformance with
   all provisions of Section 10 of RFC 2026. RFC2026.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six
   months and may be updated, replaced, or obsoleted by other documents
   at any time.  It is inappropriate to use Internet-Drafts as
   reference material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
        http://www.ietf.org/ietf/1id-abstracts.txt
   The list of Internet-
   Draft Internet-Draft Shadow Directories can be accessed at
        http://www.ietf.org/shadow.html.

   This particular draft is being developed in the Session Initiation
   Protocol Working Group. Discussion of it therefore belongs on that
   list. The charter for Session Initiation Protocol may be found at
   http://www.ietf.org/html.charters/sip-charter.html

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes a set of managed objects that are used
   to manage Session Initiation Protocol(SIP) [17] devices, Protocol (SIP) entities, which include
   User Agents, Proxy servers, Redirect servers and Registrars.

   Lingle/Maeng/Walker/Mule                                          1
   Table of Contents

   Abstract..........................................................1
   1. Introduction...................................................2
   2. The SNMP Management Framework..................................2
   3. Overview.......................................................3
   4. Structure of SIP MIB...........................................3
   4.1. Textual Conventions..........................................4
   4.2. Relationship to Other MIB....................................5
   5. Definitions....................................................8
   5.1. SIP Structure Management Information.........................8
   5.2. SIP Textual Conventions......................................9
   5.3. SIP Common..................................................10
   5.4. SIP User Agent..............................................56
   5.5. SIP Server (Registrar, Redirect & Proxy Server).............61
   6. Security Considerations.......................................83
   7. Intellectual Property.........................................84
   8. Full Copyright Statement......................................84
   9. References....................................................86
   10.  Author's Addresses..........................................87

1. Introduction

   This memo defines a portion of the Management Information Base
   (MIB)for (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes a set of managed objects that are used
   to schedule management operations periodically or at specified dates
   and times.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [16].

Lingle/Maeng/Walker                                                  1

2. The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

   -

   . An overall architecture, described in RFC 2271 [1].

   -

   . Mechanisms for describing and naming objects and events for the
     purpose of management. The first version of this Structure of
     Management Information (SMI) is called SMIv1 and described in
     STD16, RFC 1155 [2], STD 16, RFC 1212 [3] and RFC 1215 [4]. The
     second version, called SMIv2, is described in STD 58, RFC 2578
     [5], RFC 2579 [6] and RFC 2580 [7].

   -

   . Message protocols for transferring management information.  The
     first version of the SNMP message protocol is called SNMPv1 and

   Lingle/Maeng/Mule/Walker                                          2
     described in RFC 1157 [8]. A second version of the SNMP message
     protocol, which is not an Internet standards track protocol, is
     called SNMPv2c and described in RFC 1901 [9] and RFC 1906 [10].
     The third version of the message protocol is called SNMPv3 and
     described in RFC 2272 [11] and RFC 2274 [12].

   -

   . Protocol operations for accessing management information. The
     first set of protocol operations and associated PDU formats is
     described in STD 15, RFC 1157 [8]. A second set of protocol
     operations and associated PDU formats is described in RFC 1905
     13].

   -
     [13].

. A set of fundamental applications described in RFC 2273 [14] and the
  view-based access control mechanism described in RFC 2275 [15].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.

   This memo specifies a MIB module that is compliant to the SMIv2. A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations. The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64). Some machine readable machine-readable
   information in SMIv2 will be converted into textual descriptions in
   SMIv1 during the translation process. However, this loss of
   machinereadable machine-
   readable information is not considered to change the semantics of
   the MIB.

3. Overview

   The Session Initiation Protocol (SIP) [17] is an application-layer
   control protocol that can establish, modify and terminate multimedia
   sessions or calls. This MIB provides some managed objects for SIP
   devices
   entities defined in RFC 2543 - User Agent, Proxy server, Redirect

Lingle/Maeng/Walker                                                  2
   server and Registrar. It is provided as a base for the work within
   the working group to define a MIB.

   This MIB is intended to provide management of the basic devices in
   SIP. SIP
   entities. It provides for monitoring of status and protocol
   statistics, as well as for configuration of SIP devices. entities. It also
   includes objects for the SIP INFO method [20].

4. Structure of SIP MIB

   This memo specifies six five MIB modules.  They are SIP-MIB-SMI, SIP-
   COMMON-MIB, SIP-REGISTRAR-MIB, SIP-SERVER-MIB, SIP-UA-MIB and SIP-
   TC. SIP-TC. SIP-MIB-SMI
   indicates the root OID of SIP MIB modules.  SIP-
   COMMON-MIB  SIP-COMMON-MIB contains
   common objects used in all the SIP entities such as Registrars,
   Proxy Servers, Redirect Servers and User Agents. SIP-
   SIP-REGISTRAR-MIB, SIP-SERVER-MIB and
   SIP-UA-MIB includes objects defined for Registrars, Proxy and Redirect servers,

   Lingle/Maeng/Mule/Walker                                          3
   servers and User Agents, respectively.  SIP-TC defines the textual
   conventions used through
   out throughout MIB modules.

   The

   Each MIB modules contain the Module contains following groups of objects:

   -- SIP-COMMON-MIB: Common to all the SIP devices
      sipCommonConfigGroup
      sipCommonStatsGroup
      sipCommonNotifGroup

   -- SIP-REGISTRAR-MIB: Groups of objects for Registrars
      sipRegistrarConfigGroup
      sipRegistrarStatsGroup entities
      sipCommonConfigGroup,
      sipCommonStatsGroup,
      sipCommonConfigTimerGroup,
      sipCommonConfigTimerExtMethodGroup,
      sipCommonConfigRetryGroup,
      sipCommonConfigRetryExtMethodGroup,
      sipCommonStatsRetryGroup,
      sipCommonStatsRetryExtMethodsGroup,
      sipCommonNotifGroup,
      sipCommonStatusCodeNotifGroup.

   -- SIP-SERVER-MIB: Groups of objects for proxy Registrars, Proxy and
   -- Redirect Servers
      sipServerConfigGroup
      sipServerStatsGroup
      sipProxyConfigGroup
      sipServerConfigGroup,
      sipProxyConfigGroup,
      sipProxyStatsGroup
      sipServerConfigGroup,
      sipRegistrarConfigGroup,
      sipRegistrarStatsGroup,

   -- SIP-UA-MIB: Groups of objects for User Agents
      sipUAConfigGroup
      sipUAStatsGroup

   It is required to implement SIP-COMMON-MIB together with its own MIB
   module in Registrars, Proxy Servers, Redirect Servers and User
   Agents.  For instance, a SIP Registrar will need four MIB modules,
   SIP-MIB-SMI, SIP-COMMON-MIB, SIP-REGISTRAR-MIB, SIP-SERVER-MIB, and SIP-TC in order to
   provide a complete set of objects . objects. If a device has more than one sip
   entity or multiple instances of the same entity, it may should implement
   multiple SIP modules.  Section 4.2 describes handling of multiple
   instances in detail.

4.1

4.1. Textual Conventions

   The data type SipServerActions SipTransportProtocol is used as textual conventions in
   this document.  These textual conventions have NO effect on either
   the syntax nor or the semantics of any managed object.  Objects defined

Lingle/Maeng/Walker                                                  3
   using these conventions are always encoded by means of the rules
   that define their primitive type.  Hence, no changes to the SMI or
   the SNMP are necessary to accommodate these textual conventions conventions,
   which are adopted merely for the convenience of readers.

4.2

   Lingle/Maeng/Mule/Walker                                          4

4.2. Relationship to Other MIB

   There is a requirement to be able to support multiple instances of
   SIP MIB modules in the context of a single system having a single
   SNMP agent.   For example, a device acting as a SIP Proxy Server may
   also contain a Registrar function.
   It is also possible to have multiple instances of a particular type
   of SIP entity running on the same system.  For example, there may be
   Registrars for different domains with completely different
   behaviors.

   While there are separate MIB modules defined for SIP Redirect &
   Proxy Servers, for Registrars, and for User Agents, Agents and
   SIP servers, there is also a "common" MIB module expected to be
   supported by every SIP entity.  Further, all SIP entities are either
   acting as a UAC, UAS or perhaps both.  So a SIP Proxy Server must
   support the SIP-SERVER-MIB and SIP-
   COMMON-MIB SIP-COMMON-MIB modules.  Likewise,
   the Registrar must support the SIP-
   REGISTRAR SIP-SERVER-MIB and SIP-COMMON-MIB
   modules.  Here we have the requirement for supporting multiple
   instances of a particular MIB module in one system.

   This problem requirement is solved by using the framework provided by the
   NETWORK-SERVICES-MIB, RFC 2788 [19].   The Network Services Monitoring MIB applTable will be
   populated with entries corresponding to each SIP entity in the
   system.  Each entity will then have an applIndex associated with it.
   That applIndex is used throughout A device implementing the SIP
   MIB modules' tables so
   that each SIP entity can have its own set (instances) of managed MUST support the NETWORK-SERVICES-MIB and, at a minimum, it MUST
   support the applIndex and applName objects defined in those MIBs.

   A quick example will illustrate how it would conceptually appear in
   a running system.  Take the example above of applTable.  The
   following applName conventions will be adopted:

       o for a SIP Proxy Server co-
   located with entity, applName must be equal to "sip_proxy"
       o for a Registrar.

   NETWORK-SERVICES-MIB applTable would SIP Redirect entity, applName must be populated something like equal to
         "sip_redirect"
       o for a SIP Registrar entity, applName must be equal to
         "sip_registrar"
       o for a SIP User Agent entity, applName must be equal to
         "sip_ua"
       o for a SIP entity acting in any combination of Proxy, Redirect,
         or Registrar, AND wishing to support only a single instance of
         the SIP-COMMON-MIB, the
   following:

   applIndex | applName        | applDescription
   ----------+-----------------+------------------------------
       1     | "sip_proxy"     | "ACME Inc. for the combined server
         entity must reflect the appropriate combination. For example,
         "sip_proxy_redirect" or "sip_proxy_registrar".

   Additionally, the following objects may be supported in applTable.
   If they are, the object values SHOULD be populated as follows:

       o applVersion: version of the SIP Proxy Ver 1.0"
   ----------+-----------------+------------------------------
       2     | "registrar"     | "ACME Inc. Registrar Ver 1.3"
   ----------+-----------------+------------------------------ application;  if the SIP
         protocol version is used, the value MUST be as defined in SIP
         [17], section 4.3.1.
       o applUptime: value must be identical to sipServiceStartTime
         defined in the SIP-COMMON module,
       o applOperStatus: value should reflect the operational status
         defined in sipServiceOperStatus, at least by means of a
         mapping,
       o applLastChange: value must be identical to
         sipServiceLastChange defined in the SIP-COMMON module.

   Lingle/Maeng/Mule/Walker                                          5
   Note: There are a number of other objects in the applTable.  They
   are not included for the sake of brevity and for the fact that they
   do not enhance the concept being presented.

   Example 1: The table below illustrates how it would conceptually
   appear in a system acting as both, a Proxy and Registrar server and
   wishing to maintain separate SIP-COMMON-MIB instances.

   The NETWORK-SERVICES-MIB applTable would be populated as follows:

      applIndex | applName        | applDescription
      ----------+-----------------+------------------------------
          1     | "sip_proxy"     | "ACME SIP Proxy"
      ----------+-----------------+------------------------------
          2     | "sip_registrar" | "ACME SIP Registrar"
      ----------+-----------------+------------------------------

   The SIP-COMMON-MIB sipCommonCfgTable would have two rows: one for
   the proxy (applIndex=1) and one for the registrar (applIndex=2).
   The SIP-SERVER-MIB and SIP-REGISTRAR-MIB tables would, however,

Lingle/Maeng/Walker                                                  4 only be populated with one
   row  indexed by applIndex=1 and applIndex=2 respectively. respectively if the
   server provides either proxy or registrar.

   SIP-COMMON-MIB sipCommonCfgTable might be populated as:

      applIndex | sipProtocolVersion | sipServiceOperStatus | ...
      ----------+--------------------+----------------------+----
          1     |     "SIP/2.0"      |      up(1)           |
      ----------+--------------------+----------------------+----
          2     |     "SIP/2.0"      |      restarting(6)   |
      ----------+--------------------+----------------------+----

   while the SIP-SERVER-MIB sipProxyCfgTable in SIP-SERVER-MIB is populated as:

      applIndex | sipRequestMaxExpires | sipProxyStateful | ...
      ----------+----------------------+------------------+----
          1     |        3600          |      false       |
      ----------+----------------------+------------------+----

   and the SIP-REGISTRAR-MIB sipRegUserTable in SIP-SERVER-MIB is populated as:

      applIndex | sipUserIndex |   sipUserUri             | ...
      ----------+--------------+--------------------------+----
          2     |       1      | drwalker@ss8networks.com drwalker@ss8.com         |
      ----------+--------------+--------------------------+----
          2     |       2      | joon_maeng@vtel.com jmaeng@vtel.com          |
      ----------+--------------+--------------------------+----
          2     |       3      | klingle@cisco.com        |
      ----------+--------------+--------------------------+----
          2     |       4      | jfm@clarent.com          |
      ----------+--------------+--------------------------+----

   Lingle/Maeng/Mule/Walker                                          6
   Example 2: The NETWORK-SERVICES-MIB assocTable is not considered a requirement
   for next table illustrates how it would conceptually
   appear in a system acting as both, a Proxy and Registrar server and
   wishing to share a single instance of SIP-COMMON-MIB.

   The NETWORK-SERVICES-MIB applTable would be populated as follows:

         applIndex | applName             | applDescription
         ----------+----------------------+---------------------------
             1     | "sip_proxy_registrar"| "ACME SIP Proxy&Registrar"
         ----------+----------------------+---------------------------

   The SIP-COMMON-MIB sipCommonCfgTable would have only one row to
   cover both the proxy and the registrar.

      SIP-COMMON-MIB sipCommonCfgTable might be populated as:

         applIndex | sipProtocolVersion | sipServiceOperStatus | ...
         ----------+--------------------+----------------------+----
             1     |     "SIP/2.0"      |      up(1)           |
         ----------+--------------------+----------------------+----

      while sipProxyCfgTable in SIP-SERVER-MIB is populated as:

         applIndex | sipRequestMaxExpires | sipProxyStateful | ...
         ----------+----------------------+------------------+----
             1     |        3600          |      false       |
         ----------+----------------------+------------------+----

      and sipRegUserTable in SIP-SERVER-MIB is populated as:

         applIndex | sipUserIndex |   sipUserUri             | ...
         ----------+--------------+--------------------------+----
             1     |       1      | drwalker@ss8networks.com |
         ----------+--------------+--------------------------+----
             1     |       2      | jmaeng@vtel.com          |
         ----------+--------------+--------------------------+----
             1     |       3      | klingle@cisco.com        |
         ----------+--------------+--------------------------+----
             1     |       4      | jfm@clarent.com          |
         ----------+--------------+--------------------------+----

   The NETWORK-SERVICES-MIB assocTable is not considered a requirement
   for SIP systems.  It is not a mandatory group for NETWORK-SERVICES-
   MIB compliance.

   Lingle/Maeng/Mule/Walker                                          7

5. Definitions

5.1. SIP Structure Management Information

   SIP-MIB-SMI DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        mib-2
             FROM SNMPv2-SMI;

   sipMIB MODULE-IDENTITY
        LAST-UPDATED   "200007080000Z"   "200102230000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB Team email: sip-mib@egroups.com

                 Co-editor  Kevin Lingle
                            Cisco Systems, Inc.
                 postal:    7025 Kit Creek Road

Lingle/Maeng/Walker                                                  5
                            P.O. Box 14987
                            Research Triangle Park, NC 27709
                            USA
                 email:     klingle@cisco.com
                 phone:     +1-919-392-2029

                 Co-editor  Joon Maeng
                            VTEL Corporation
                 postal:    108 Wild Basin Rd.
                            Austin, TX 78746
                            USA
                 email:     joon_maeng@vtel.com
                 phone:     +1-512-437-4567

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    80 Hines    495 March Road
                            Kanata, ON K2K 2T8 3G1
                            Canada
                 email:     drwalker@ss8networks.com     drwalker@ss8.com
                 phone:     +1 613 592 2100" 2100

                 Co-editor  Jean-Francois Mule
                            Clarent Corporation
                            700 Chesapeake Drive
                            Redwood City, CA 94063
                 email:     jfm@clarent.com
                 phone:     +1 650 481 2835"

        DESCRIPTION
                "Initial version of Session Initiation Protocol (SIP)
                 MIB module that defines base OID for all other
                 SIP-related MIB Modules."

   Lingle/Maeng/Mule/Walker                                          8
        ::= { mib-2 9998 } -- to be assigned by IANA

   END

5.2. SIP Textual Conventions

   SIP-TC DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY
             FROM SNMPv2-SMI

        TEXTUAL-CONVENTION
             FROM SNMPv2-TC

        sipMIB
             FROM SIP-MIB-SMI;

   sipTC MODULE-IDENTITY
        LAST-UPDATED   "200007080000Z"   "200102280000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB Team email: sip-mib@egroups.com sip-mib@yahoogroups.com

                 Co-editor  Kevin Lingle
                            Cisco Systems, Inc.
                 postal:    7025 Kit Creek Road
                            P.O. Box 14987
                            Research Triangle Park, NC 27709

Lingle/Maeng/Walker                                                  6
                            USA
                 email:     klingle@cisco.com
                 phone:     +1-919-392-2029     +1 919 392 2029

                 Co-editor  Joon Maeng
                            VTEL Corporation
                 postal:    108 Wild Basin Rd.
                            Austin, TX 78746
                            USA
                 email:     joon_maeng@vtel.com
                 phone:     +1-512-437-4567     +1 512 437 4567

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    80 Hines    495 March Road
                            Kanata, ON K2K 2T8 3G1
                            Canada
                 email:     drwalker@ss8networks.com     drwalker@ss8.com
                 phone:     +1 613 592 2100" 2100

                 Co-editor  Jean-Francois Mule
                            Clarent Corporation
                            700 Chesapeake Drive
                            Redwood City, CA 94063
                 email:     jfm@clarent.com
                 phone:     +1 650 481 2835"

   Lingle/Maeng/Mule/Walker                                          9
        DESCRIPTION
                "Initial version of Session Initiation Protocol (SIP)
                 MIB Textual Conventions module used by other
                 SIP-related MIB Modules."
        ::= { sipMIB 1 }

   --
   -- Textual Conventions
   --
   SipServerActions

   SipTransportProtocol ::= TEXTUAL-CONVENTION
           STATUS current
           DESCRIPTION
                "Lists the possible actions of
                "This convention is a SIP network server.
                 A specific action may be requested by bit map.  Each bit represents a user agent
                 as
                 transport protocol.  If a Contact parameter bit has value 1, then that
                 transport protocol selected in some way dependent on
                 the context of the object using this convention.
                 If a REGISTER."
           SYNTAX INTEGER {
                          redirect(1),
                          proxy(2)
           }

   END

5.3. SIP Common

   SIP-COMMON-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        NOTIFICATION-TYPE,
        Counter32,
        Integer32,
        Gauge32,
        TimeTicks,
        Unsigned32

Lingle/Maeng/Walker                                                  7
             FROM SNMPv2-SMI

        DateAndTime,
        RowStatus,
        TruthValue
             FROM SNMPv2-TC

        MODULE-COMPLIANCE,
        OBJECT-GROUP,
        NOTIFICATION-GROUP
             FROM SNMPv2-CONF

        SnmpAdminString
             FROM SNMP-FRAMEWORK-MIB bit has value 0, then that transport protocol
                 is not selected.  Combinations of bits can be
                 set when multiple transport protocols are selected.

                 bit 0   : a protocol other than those defined here.
                 bit 1   : User Datagram Protocol.
                 bit 2   : Transmission Control Protocol.
                 bit 3   : Stream Control Transmission Protocol.
                 bit 4   : Transport Layer Security Protocol."
           SYNTAX     BITS {
                            other(0),  -- none of the following
                            udp(1),
                            tcp(2),
                            sctp(3),
                            tls(4)
           }

   END

5.3. SIP Common
   SIP-COMMON-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        NOTIFICATION-TYPE,
        Counter32,
        Integer32,
        Gauge32,
        TimeTicks,
        Unsigned32
             FROM SNMPv2-SMI

        DateAndTime,
        RowStatus,
        TruthValue
             FROM SNMPv2-TC

        MODULE-COMPLIANCE,

   Lingle/Maeng/Mule/Walker                                         10
        OBJECT-GROUP,
        NOTIFICATION-GROUP
             FROM SNMPv2-CONF

        SnmpAdminString
             FROM SNMP-FRAMEWORK-MIB

        sipMIB
             FROM SIP-MIB-SMI

        SipTransportProtocol
             FROM SIP-TC

        applIndex
             FROM NETWORK-SERVICES-MIB;

   sipCommonMIB MODULE-IDENTITY
        LAST-UPDATED   "200004120000Z"   "200102230000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB Team email: sip-mib@egroups.com sip-mib@yahoogroups.com

                 Co-editor  Kevin Lingle
                            Cisco Systems, Inc.
                 postal:    7025 Kit Creek Road
                            P.O. Box 14987
                            Research Triangle Park, NC 27709
                            USA
                 email:     klingle@cisco.com
                 phone:     +1-919-392-2029     +1 919 392 2029

                 Co-editor  Joon Maeng
                            VTEL Corporation
                 postal:    108 Wild Basin Rd.
                            Austin, TX 78746
                            USA
                 email:     joon_maeng@vtel.com
                 phone:     +1-512-437-4567     +1 512 437 4567

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    80 Hines    495 March Road
                            Kanata, ON K2K 2T8 3G1
                            Canada
                 email:     drwalker@ss8networks.com     drwalker@ss8.com
                 phone:     +1 613 592 2100" 2100

                 Co-editor  Jean-Francois Mule
                            Clarent Corporation
                            700 Chesapeake Drive
                            Redwood City, CA 94063
                 email:     jfm@clarent.com
                 phone:     +1 650 481 2835"
        DESCRIPTION
                "Initial version of Session Initiation Protocol (SIP)

Lingle/Maeng/Walker                                                  8
                 Common MIB module.  This module defines objects which

   Lingle/Maeng/Mule/Walker                                         11
                 may be common to all SIP entities.

                 SIP is an application-layer signalling protocol for
                 creating, modifying and terminating multimedia
                 sessions with one or more participants. These sessions
                 include Internet multimedia conferences and Internet
                 telephone calls.  SIP is defined in RFC 2543 (March
                 1999).

                 This MIB is defined for the managing objects which are
                 common to SIP User Agents (UAs), Proxy and Redirect
                 Servers, and Registrars.  Objects specific to each of
                 these entities may be managed using entity specific
                 MIBs defined in other modules.

                 A User Agent is an application that contains both a
                 User Agent Client (UAC) and a User Agent Server (UAS).
                 A UAC is an application that initiates a SIP request.
                 A UAS is an application that contacts the user when a
                 SIP request is received and that returns a response on
                 behalf of the user.  The response accepts, rejects, or
                 redirects the request.

                 A Proxy Server acts as both a client and a server.
                 It accepts requests from other clients, either
                 responding to them or passing them on to other
                 servers, possibly after modification.

                 A Redirect Server accepts requests from clients and
                 returns zero or more addresses to that client. Unlike
                 a Proxy server it does not initiate requests.  Unlike
                 a User Agent Server it does not accept calls.

                 A Registrar is a server that accepts REGISTER
                 requests.  A Registrar is typically co-located with a
                 Proxy or Redirect Server."
        ::= { sipMIB 2 }

   --
   -- sipCommon Group
   -- This group contains MIB objects that are common to all SIP
   -- entities.
   --
   sipCommonCfg              OBJECT IDENTIFIER ::= { sipCommonMIB 1 }
   sipCommonCfgBase          OBJECT IDENTIFIER ::= { sipCommonCfg 1 }
   sipCommonCfgTimer         OBJECT IDENTIFIER ::= { sipCommonCfg 2 }
   sipCommonCfgRetry         OBJECT IDENTIFIER ::= { sipCommonCfg 3 }
   sipCommonStats            OBJECT IDENTIFIER ::= { sipCommonMIB 2 }
   sipCommonStatsSummary     OBJECT IDENTIFIER ::= { sipCommonStats 1 }
   sipCommonStatsMethod      OBJECT IDENTIFIER ::= { sipCommonStats 2 }
   sipCommonStatusCode       OBJECT IDENTIFIER ::= { sipCommonStats 3 }
   sipCommonStatsTrans       OBJECT IDENTIFIER ::= { sipCommonStats 4 }

Lingle/Maeng/Walker                                                  9
   sipCommonStatsRetry       OBJECT IDENTIFIER ::= { sipCommonStats 5 }

   Lingle/Maeng/Mule/Walker                                         12
   --
   -- Common Configuration Objects
   --
   sipCommonCfgTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipCommonCfgEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the common configuration objects
             applicable to all SIP entities.  Each row represents
             those objects for a particular SIP entity present in
             this system. The instances of SIP entities are
             uniquely identified by applIndex."
       ::= { sipCommonCfg sipCommonCfgBase 1 }

   sipCommonCfgEntry OBJECT-TYPE
       SYNTAX     SipCommonCfgEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of common configuration."
       INDEX { applIndex }
       ::= { sipCommonCfgTable 1 }

   SipCommonCfgEntry ::=
       SEQUENCE {
                sipProtocolVersion        SnmpAdminString,
                sipServiceOperStatus      INTEGER,
                sipServiceAdminStatus     INTEGER,
                sipServiceStartTime       TimeTicks,
                sipServiceLastChange      TimeTicks,
                sipOrganization           SnmpAdminString,
                sipMaxTransactions
                sipMaxSessions            Unsigned32,
                sipInviteTimeout          Unsigned32,
                sipHideOperation          INTEGER,
                sipUserLocationServerAddr SnmpAdminString,
                sipCanUseCompact          TruthValue,
                sipRequestUriHostMatching TruthValue
       }

   sipProtocolVersion OBJECT-TYPE
       SYNTAX      SnmpAdminString
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object will reflect the version of SIP supported by
             this SIP entity.  It will follow the same format as SIP
             version information contained in the SIP messages
             generated by this SIP entity.  For example, entities
             supporting SIP version 2 will return 'SIP/2.0' as dictated
             by RFC 2543."
       ::= { sipCommonCfgEntry 1 }

Lingle/Maeng/Walker                                                 10

   sipServiceOperStatus OBJECT-TYPE
       SYNTAX     INTEGER {
                          up(1),
                          down(2),
                          testing(3),

   Lingle/Maeng/Mule/Walker                                         13
                          unknown(4),
                          halted(5),
                          restarting(6)
                  }
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the current operational state of the
             SIP application.

             up(1)         : The application is operating normally, and
                             is processing (receiving and possibly
                             issuing) SIP requests and responses.
             down(2)       : The application is currently unable to
                             process SIP messages.
             testing(3)    : The application is currently in test mode
                             and may not be able to process SIP
                             messages.
             unknown(4)    : The operational status of the application
                             cannot be determined for some reason.
             halted(5)     : The application has been manually
                             prevented from processing SIP messages.
             restarting(6) : The application is booting and will soon
                             be able to process SIP messages."
       ::= { sipCommonCfgEntry 2 }

   sipServiceAdminStatus OBJECT-TYPE
       SYNTAX     INTEGER {
                          shutdown(1),
                          reset(2),
                          restart(3),
                          stop(4),
                          rts(5)
                  }
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object is used to affect the overall operational
             state of the SIP server application.

             shutdown(1) : Immediately kill the application, don't
                           restart.
             reset(2)    : Restart application, reinitialize data,
                           requires rts.
             restart(3)  : Restart application, no data loss, requires
                           rts.
             stop(4)     : Stop processing new requests, requires rts.
             rts(5)      : Return to service."

Lingle/Maeng/Walker                                                 11
       ::= { sipCommonCfgEntry 3 }

   sipServiceStartTime OBJECT-TYPE
       SYNTAX     TimeTicks
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "The value of sysUpTime at the time the SIP entity was last
             started. If the current state was entered prior to the

   Lingle/Maeng/Mule/Walker                                         14
             last re-initialization of the local network management
             subsystem, then this object contains a zero value."
       ::= { sipCommonCfgEntry 4 }

   sipServiceLastChange OBJECT-TYPE
       SYNTAX     TimeTicks
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "The value of sysUpTime at the time the SIP entity entered
             its current operational state.  If the current state was
             entered prior to the last re-initialization of the local
             network management subsystem, then this object contains a
             zero value."
       ::= { sipCommonCfgEntry 5 }

   sipOrganization OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object contains the name of the organization issuing
             the request or response.  It may also be inserted by a
             proxy at a boundary of an organization.  If the object
             exists, it is inserted into requests and responses."
       REFERENCE
             "RFC 2543, Section 6.24"
       ::= { sipCommonCfgEntry 6 }

   sipMaxTransactions

   sipMaxSessions OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object indicates the maximum number of simultaneous
             transactions
             sessions that the SIP entity can manage."
       ::= { sipCommonCfgEntry 7 }

   sipInviteTimeout OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       UNITS      "seconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION

Lingle/Maeng/Walker                                                 12
            "This object specifies
            "For user agent clients, this value is inserted into the default duration that a SIP
             client will wait for a response to an INVITE request.
             Expires header.
             For proxy servers, if a received request contained an
             Expires header, then the value in the header takes
             precedence.  The server returns a 408 Request Timeout if
             no response is received before
             expiration of the request timer.

             For user agent clients, this value is inserted into the
             Expires header." timer."
       ::= { sipCommonCfgEntry 8 }

   sipHideOperation

   sipRequestUriHostMatching OBJECT-TYPE
       SYNTAX     INTEGER {
                          none(1),
                          hop(2),
                          route(3)
                  }     TruthValue
       MAX-ACCESS read-write

   Lingle/Maeng/Mule/Walker                                         15
       STATUS     current
       DESCRIPTION
            "This object specifies which type of Hide header the server
             adds to requests.  These headers are normally added by a
             User Agent, but may be added by a proxy.  The value of
             this object does whether or not affect processing of Hide headers the host in
             received requests.

             The
             RequestURI must match server's host name.

             If the value of this object only applies to requests that do
             not contain a Hide:route header.

             none(1)  : The is TRUE, then the server doesn't insert
             requires a Hide header.
             hop(2)   : The server inserts a Hide:hop header.
             route(3) : The server inserts match, and if the RequestURI doesn't match the
             server's host name, a Hide:route header." 404 Not Found status code is
             returned by the server.
             If the value is FALSE, then no match is required."
       REFERENCE
            "RFC 2543, Section 6.22"
       DEFVAL { none } 4.3"
       ::= { sipCommonCfgEntry 9 }

   sipUserLocationServerAddr

   --
   -- Support for multiple ports
   --
   sipPortTable OBJECT-TYPE
       SYNTAX      SnmpAdminString     SEQUENCE OF SipPortEntry
       MAX-ACCESS  read-write not-accessible
       STATUS     current
       DESCRIPTION
            "This object will specify the address of the User Location
             Server (ULS) being used to resolve table contains the location list of end
             points.

             This could be a Domain Name Server (DNS) or a ports that each SIP
             proxy/redirect server entity
             in the case where this entity system is a
             user agent. This could allowed to use.  These ports can be some sort of database server if
             this entity is a proxy/redirect server.

             The format of the address follows the IETF service

Lingle/Maeng/Walker                                                 13
             location protocol. The syntax is as follows:

                mapping-type:type-specific-syntax

             The mapping-type specifies a scheme for mapping
             advertised using the
             matching dial  string to Contact header in a target server. The type-
             specific-syntax is exactly that, something that the
             particular mapping scheme can understand.
             For example,
                Session target           Meaning
                ipv4:171.68.13.55:1006 REGISTER request
             or response. The session target is the IP
                                         version 4 address instances of
                                         171.68.13.55 and port 1006.
                dns:pots.cisco.com       The session target is the IP
                                         host with dns name
                                         pots.cisco.com.

             The valid Mapping type definitions for the peer SIP entities are as
             follows:
                ipv4  - Syntax: ipv4:w.x.y.z:port or  ipv4:w.x.y.z
                dns   - Syntax: dns:host.domain." uniquely
             identified by applIndex."
       ::= { sipCommonCfgEntry 10 sipCommonCfgBase 2 }

   sipCanUseCompact

   sipPortEntry OBJECT-TYPE
       SYNTAX     TruthValue     SipPortEntry
       MAX-ACCESS read-only not-accessible
       STATUS     current
       DESCRIPTION
            "Specification of a particular port."
       INDEX { applIndex, sipPort }
       ::= { sipPortTable 1 }

   SipPortEntry ::=
       SEQUENCE {
                sipPort                 INTEGER,
                sipTransportRcv         SipTransportProtocol,
                sipTransportSnd         SipTransportProtocol,
                sipPortStatus           RowStatus
       }

   sipPort OBJECT-TYPE
       SYNTAX     INTEGER (1..65535)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This object specifies whether or not the client is able
             to use reflects a particular port that can be used by
             the compact encoding form in SIP application."
       ::= { sipPortEntry 1 }

   sipTransportRcv OBJECT-TYPE

   Lingle/Maeng/Mule/Walker                                         16
       SYNTAX     SipTransportProtocol
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object will specify the requests it sends.

             If transport protocol the value of this SIP
             entity will use to receive SIP messages.

             This object is TRUE, the client is able to
             encode outgoing messages using the compact encoding form. a bit map.  Each bit represents a transport
             protocol.  If the a bit has value 1, then that transport protocol
             is FALSE, the client currently being used.  If a bit has value 0, then that
             transport protocol is unable to encode
             outgoing messages using the compact form."
        REFERENCE
             "RFC 2543, Section 9" currently not being used."
       ::= { sipCommonCfgEntry 11 sipPortEntry 2 }

   sipRequestUriHostMatching

   sipTransportSnd OBJECT-TYPE
       SYNTAX     TruthValue     SipTransportProtocol
       MAX-ACCESS read-write read-create
       STATUS     current
       DESCRIPTION
            "This object specifies whether or not will specify the host in
             RequestURI must match server's host name.

             If transport protocol the value of this SIP
             entity will use to send SIP messages.

             This object is TRUE, then the server
             requires a match, and if the RequestURI doesn't match the
             server's host name, bit map.  Each bit represents a 404 Not Found status code is
             returned by the server. transport
             protocol.  If the a bit has value 1, then that transport protocol
             is FALSE, currently being used.  If a bit has value 0, then no match that
             transport protocol is required."
       REFERENCE
            "RFC 2543, Section 4.3"

Lingle/Maeng/Walker                                                 14 currently not being used."
       ::= { sipCommonCfgEntry 12 sipPortEntry 3 }

   sipPortStatus OBJECT-TYPE
       SYNTAX     RowStatus
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "The row status of the entry. This object is required to
             create or delete rows remotely by a manager.  The row
             associated with port 5060 need not be created and cannot
             be deleted.  It is always present in the table."
       ::= { sipPortEntry 4 }

   --
   -- Support for multiple ports non-SIP URI schemes
   --
   sipPortTable
   sipUriSupportedTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipPortEntry SipUriSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the a list of ports that each SIP entity
             in this system is allowed to use.  These ports can be
             advertised using the Contact header in a REGISTER request
             or response. The instances of SIP entities are uniquely
             identified by applIndex."
       ::= { sipCommonCfg 2 }

   sipPortEntry OBJECT-TYPE
       SYNTAX     SipPortEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Specification of a particular port."
       INDEX { applIndex, sipPort }
       ::= { sipPortTable 1 }

   SipPortEntry ::=
       SEQUENCE {
                sipPort                 INTEGER,
                sipTransport            INTEGER,
                sipPortStatus           RowStatus
       }

   sipPort OBJECT-TYPE
       SYNTAX     INTEGER (1..65535)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This object reflects a particular port that can be used by
             the SIP application."
       ::= { sipPortEntry 1 }

   sipTransport OBJECT-TYPE
       SYNTAX     INTEGER {
                          udp(1),
                          tcp(2),
                          udpAndTcp(3)
                  }
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object will specify the transport protocol the SIP
             application will use to receive SIP messages.

Lingle/Maeng/Walker                                                 15
             udp(1)       : Use User Datagram Protocol.
             tcp(2)       : Use Transmission Control Protocol.
             udpAndTcp(3) : Use both UDP and TCP."
       ::= { sipPortEntry 2 }

   sipPortStatus OBJECT-TYPE
       SYNTAX     RowStatus
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "The row status of the entry. This object is required to
             create or delete rows remotely by a manager.  The row
             associated with port 5060 need not be created and cannot
             be deleted.  It is always present in the table."
       ::= { sipPortEntry 3 }

   --
   -- Support for multiple non-SIP URIs
   --
   sipUriSupportedTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipUriSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains a list of URIs URI schemes supported by each
             SIP entity in this system. These are in addition to the SIP
             URL which must necessarily be supported.  Normally the
             list of URIs URI schemes supported by an entity is static
             (i.e. will not change over time).

             A URI is a Uniform Resource Identifier (as defined in RFC
             2396).

             URIs

             URI schemes could, for example, contain URLs for phones, fax,
             or irc if they were defined) or a mailto: (RFC 2368) URL.

   Lingle/Maeng/Mule/Walker                                         17
             The instances of SIP entities are uniquely identified
             by applIndex."
       REFERENCE
             "RFC 2543, Section 6.13"
       ::= { sipCommonCfg sipCommonCfgBase 3 }

   sipUriSupportedEntry OBJECT-TYPE
       SYNTAX     SipUriSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A particular non-SIP URI supported by the SIP entity."
       INDEX { applIndex, sipUriSupportedIndex }
       ::= { sipUriSupportedTable 1 }

   SipUriSupportedEntry ::=
       SEQUENCE {

Lingle/Maeng/Walker                                                 16
                sipUriSupportedIndex           Unsigned32,
                sipUriSupported                SnmpAdminString
       }

   sipUriSupportedIndex OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This object uniquely identifies a conceptual row
             in the table."
       ::= { sipUriSupportedEntry 1 }

   sipUriSupported OBJECT-TYPE
       SYNTAX SnmpAdminString
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
            "This object indicates a particular non-SIP URI scheme
             supported by the SIP entity.  Only the scheme itself
             (as described in RFC 2396) is indicated.  For example,
             if the mailto: URLs are supported,then supported, then the table entry
             contains 'mailto' without the colon."
       REFERENCE
             "RFC 2396 section 3"
       ::= { sipUriSupportedEntry 2 }

   --
   -- Support for features which may be requested in Proxy-Require
   -- and Require headers
   --
   sipFtrSupportedTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipFtrSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains a list of the non-standard features
             supported by each SIP entity in this system, and which
             may be required by a peer. Definition of such features is

   Lingle/Maeng/Mule/Walker                                         18
             outside the scope of SIP, which only provides mechanisms
             whereby support for specific features may be signalled or
             requested.

             For example, a user agent client may require that a server
             support the 'com.example.billing' feature, which it would
             indicate in a Require header.  Such a client would have
             a row in its sipFtrSupportedTable containing the string
             'com.example.billing'.  Similarly, a server which is
             capable of handling requests for such features would list
             the string in its sipFtrSupportedTable.

             If a server does not support the required feature
             (indicated in a Require header to a UAS, or in a Proxy-
             Require to a proxy server), the server returns a 420 Bad

Lingle/Maeng/Walker                                                 17
             Extension listing the feature in an Unsupported header.

             Normally the list of such features supported by an entity
             is static (i.e. will not change over time).

             The instances of SIP entities are uniquely identified
             by applIndex."
       REFERENCE
            "RFC 2543, Sections 6.28, 6.30, and 6.38"
       ::= { sipCommonCfg sipCommonCfgBase 4 }

   sipFtrSupportedEntry OBJECT-TYPE
       SYNTAX SipFtrSupportedEntry
       MAX-ACCESS not-accessible
       STATUS current
       DESCRIPTION
            "A particular non-standard feature supported by the SIP
             entity, and which may be required by a peer."
       INDEX { applIndex, sipFtrSupportedIndex }
       ::= { sipFtrSupportedTable 1 }

   SipFtrSupportedEntry ::=
       SEQUENCE {
                sipFtrSupportedIndex           Unsigned32,
                sipFtrSupported                SnmpAdminString
       }

   sipFtrSupportedIndex OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This object uniquely identifies a conceptual row in the
             table."
       ::= { sipFtrSupportedEntry 1 }

   sipFtrSupported OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current

   Lingle/Maeng/Mule/Walker                                         19
       DESCRIPTION
            "This object indicates a particular non-standard feature
             which is supported by the SIP entity."
       ::= { sipFtrSupportedEntry 2 }

   --
   -- Common Statistics Objects
   --

   --
   -- Summary Statistics SIP Timer Configuration
   --

Lingle/Maeng/Walker                                                 18
   sipSummaryStatsTable
   sipCommonCfgTimerTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipSummaryStatsEntry SipCommonCfgTimerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the summary statistics timer configuration objects applicable
             to all SIP entities.  Each row represents
             those objects for a particular user agent and SIP entity present in
             this system. stateful proxy entities.
             The instances of  SIP entities are uniquely identified by
             applIndex."
       ::= { sipCommonStatsSummary sipCommonCfgTimer 1 }

   sipSummaryStatsEntry

   sipCommonCfgTimerEntry OBJECT-TYPE
       SYNTAX     SipSummaryStatsEntry     SipCommonCfgTimerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of summary statistics." timer configuration."
       INDEX { applIndex }
       ::= { sipSummaryStatsTable sipCommonCfgTimerTable 1 }

   SipSummaryStatsEntry

   SipCommonCfgTimerEntry ::=
       SEQUENCE {
                sipSummaryInRequests         Counter32,
                sipSummaryOutRequests        Counter32,
                sipSummaryInResponses        Counter32,
                sipSummaryOutResponses       Counter32,
                sipSummaryTotalTransactions  Counter32
                sipCfgInitialTimerInvite   Unsigned32,
                sipCfgTimerProv            Unsigned32,
                sipCfgInitialTimerAck      Unsigned32,
                sipCfgInitialTimerBye      Unsigned32,
                sipCfgInitialTimerRegister Unsigned32,
                sipCfgInitialTimerOptions  Unsigned32,
                sipCfgInitialTimerInfo     Unsigned32,
                sipCfgInitialTimerRsp      Unsigned32,
                sipCfgTimerT2              Unsigned32
       }

   sipSummaryInRequests

   sipCfgInitialTimerInvite OBJECT-TYPE
       SYNTAX     Counter32      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object indicates specifies the total number of SIP request
             messages received by initial value for the retransmit
            timer for the INVITE method.  The retransmit timer doubles
            after each retransmission, ensuring an exponential backoff
            in network traffic. This object represents the initial time
            a SIP entity including
             retransmissions." will wait to receive a provisional response to
            an INVITE before resending the INVITE request."
       DEFVAL { 500 }
       ::= { sipSummaryStatsEntry sipCommonCfgTimerEntry 1 }

   sipSummaryOutRequests

   Lingle/Maeng/Mule/Walker                                         20
   sipCfgTimerProv OBJECT-TYPE
       SYNTAX     Counter32      Unsigned32 (60000..300000)
       UNITS       "milliseconds"
       MAX-ACCESS read-only  read-write
       STATUS      current
       DESCRIPTION
           "This object contains the total number of SIP request
             messages sent out (originated and relayed) by specifies the maximum time a SIP
             entity.  Where entity will wait
            to receive a particular message final response to an INVITE.  The timer is sent more than
             once, for example as a retransmission, or as a result started
            upon receipt of
             forking, each transmission is counted separately." a provisional response."
       DEFVAL { 60000 }
   ::= { sipSummaryStatsEntry sipCommonCfgTimerEntry 2 }

   sipSummaryInResponses

   sipCfgInitialTimerAck OBJECT-TYPE

Lingle/Maeng/Walker                                                 19
       SYNTAX     Counter32      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object contains specifies the total number of SIP response
             messages received by initial value for the retransmit
            timer for the ACK method. The retransmit timer doubles
            after each retransmission, ensuring an exponential backoff
            in network traffic. This object represents the initial time
            a SIP entity including
             retransmissions." will wait to receive a response to an ACK."
       DEFVAL { 500 }
       ::= { sipSummaryStatsEntry sipCommonCfgTimerEntry 3 }

   sipSummaryOutResponses

   sipCfgInitialTimerBye OBJECT-TYPE
       SYNTAX     Counter32      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object contains specifies the total number of SIP response
             messages sent (originated and relayed) by initial value for the retransmit
            timer for the BYE method. The retransmit timer doubles
            after each retransmission, ensuring an exponential backoff
            in network traffic. This object represents the initial time
            a SIP entity
             including retransmissions." will wait to receive a response to a BYE request."
       DEFVAL { 500 }
       ::= { sipSummaryStatsEntry sipCommonCfgTimerEntry 4 }

   sipSummaryTotalTransactions

   sipCfgInitialTimerRegister OBJECT-TYPE
       SYNTAX Counter32      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object contains a count of specifies the number of transactions
             completed or in progress.

             A SIP transaction occurs between a client and a server and
             comprises all messages from initial value for the first request sent from retransmit
            timer for the client to REGISTER method.  The retransmit timer doubles
            after each retransmission, ensuring an exponential backoff
            in network traffic. This object represents the server up initial time
            a SIP entity will wait to receive a final (non-1xx) response
             sent from the server to the client.

             A transaction is identified by the CSeq sequence number
             within a single call leg.  The ACK request has the same
             CSeq number as the corresponding INVITE request, but
             comprises a transaction of its own.

             In the case of a forked request, all branches count as a
             single transaction." REGISTER
            request."
           DEFVAL { 500 }
       ::= { sipSummaryStatsEntry sipCommonCfgTimerEntry 5 }

   --
   -- SIP Method Statistics
   -- Total counts for each SIP method.
   --
   sipMethodStatsTable

   sipCfgInitialTimerOptions  OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipMethodStatsEntry      Unsigned32 (100..1000)

   Lingle/Maeng/Mule/Walker                                         21
       UNITS       "milliseconds"
       MAX-ACCESS not-accessible  read-write
       STATUS      current
       DESCRIPTION
            "This table contains object specifies the per method statistics objects
             applicable to all SIP entities.  Each row represents
             those objects initial value for the retransmit
            timer for the OPTIONS method. The retransmit timer doubles
            after each retransmission, ensuring an exponential backoff
            in network traffic. This object represents the initial time
            a particular SIP entity present in

Lingle/Maeng/Walker                                                 20
             this system.  The instances of SIP entities are uniquely
             identified by applIndex."
       ::= will wait to receive a response to an OPTIONS
            request."
       DEFVAL { sipCommonStatsMethod 1 500 }

   sipMethodStatsEntry
       ::= { sipCommonCfgTimerEntry 6 }

   sipCfgInitialTimerInfo  OBJECT-TYPE
       SYNTAX     SipMethodStatsEntry      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS not-accessible  read-write
       STATUS      current
       DESCRIPTION
            "A row of per method statistics."
       INDEX { applIndex }
       ::=
            "This object specifies the initial value for the retransmit
            timer for the INFO method. The retransmit timer doubles
            after each retransmission, ensuring an exponential backoff
            in network traffic.  This object represents the initial time
            a SIP entity will wait to receive a response to a INFO request."
       DEFVAL { sipMethodStatsTable 1 500 }

   SipMethodStatsEntry
       ::=
       SEQUENCE {
                sipStatsInviteIns          Counter32,
                sipStatsInviteOuts         Counter32,
                sipStatsAckIns             Counter32,
                sipStatsAckOuts            Counter32,
                sipStatsByeIns             Counter32,
                sipStatsByeOuts            Counter32,
                sipStatsCancelIns          Counter32,
                sipStatsCancelOuts         Counter32,
                sipStatsOptionsIns         Counter32,
                sipStatsOptionsOuts        Counter32,
                sipStatsRegisterIns        Counter32,
                sipStatsRegisterOuts       Counter32 sipCommonCfgTimerEntry 7 }

   sipStatsInviteIns

   sipCfgInitialTimerRsp  OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object reflects specifies the total number of INVITE requests
             received by initial value for the retransmit
            timer for final responses.  The retransmit timer doubles
            after each retransmission, ensuring an exponential backoff
            in network traffic. This object represents the initial time
            a SIP entity." entity will wait to retransmit a final response."
       REFERENCE
            "RFC 2543, Section 4.2.1" "Section 10.5.1 RFC2543"
       DEFVAL { 500 }
       ::= { sipMethodStatsEntry 1 sipCommonCfgTimerEntry 8 }

   sipStatsInviteOuts

   sipCfgTimerT2  OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32 (200..10000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of INVITE requests
             sent by specifies the T2 timer for a SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.1" "Section 10.4 and 10.5 RFC2543"
       DEFVAL { 4000 }
       ::= { sipMethodStatsEntry 2 sipCommonCfgTimerEntry 9 }

   sipStatsAckIns

   Lingle/Maeng/Mule/Walker                                         22
   --
   -- Initial Timers Extensions: support for extension methods
   --
   sipCommonCfgTimerExtMethodTable OBJECT-TYPE
       SYNTAX      Counter32      SEQUENCE OF SipCommonCfgTimerExtMethodEntry
       MAX-ACCESS  read-only

Lingle/Maeng/Walker                                                 21  not-accessible
       STATUS      current
       DESCRIPTION
            "This object reflects the total number table contains retransmit timers for each SIP
             extension method this entity supports. The instances
             of ACK requests
             received SIP entities are uniquely identified by applIndex.
             The applicable T2 timer value for timers configured
             in this table is that of the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.2" sipCfgTimerT2 object
             with the same applIndex value."
       ::= { sipMethodStatsEntry 3 sipCommonCfgTimer 2 }

   sipStatsAckOuts

   sipCommonCfgTimerExtMethodEntry  OBJECT-TYPE
       SYNTAX      Counter32      SipCommonCfgTimerExtMethodEntry
       MAX-ACCESS  read-only  not-accessible
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of ACK requests sent
             by the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.2" row contains timer value information for
             a particular extension method."
       INDEX { applIndex, sipCommonCfgTimerExtMethodIndex }
       ::= { sipMethodStatsEntry 4 sipCommonCfgTimerExtMethodTable 1 }

   sipStatsByeIns

   SipCommonCfgTimerExtMethodEntry ::=
       SEQUENCE {
          sipCfgTimerExtMethodIndex      Unsigned32,
          sipCfgTimerExtMethodName       SnmpAdminString,
          sipCfgTimerExtMethodTimer      Unsigned32,
          sipCfgTimerExtMethodStatus     RowStatus
       }

   sipCfgTimerExtMethodIndex OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32 (1..4294967295)
       MAX-ACCESS  read-only  not-accessible
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of BYE requests
             received by uniquely identifies a conceptual row in the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.4"
             table."
       ::= { sipMethodStatsEntry 5 sipCommonCfgTimerExtMethodEntry 1 }

   sipStatsByeOuts

   sipCfgTimerExtMethodName OBJECT-TYPE
       SYNTAX      Counter32      SnmpAdminString
       MAX-ACCESS  read-only  read-create
       STATUS      current
       DESCRIPTION
            "This object reflects contains the total number name of BYE requests sent
             by the particular extension
             method the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.4" entity supports.  For example, it may
             contain the string 'REFER' if the  REFER method is supported.
             It is an error for any of the methods contained in RFC 2543
             to be requested."
       ::= { sipMethodStatsEntry 6 sipCommonCfgTimerExtMethodEntry 2 }

   sipStatsCancelIns

   sipCfgTimerExtMethodTimer OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32

   Lingle/Maeng/Mule/Walker                                         23
       UNITS       "milliseconds"
       MAX-ACCESS  read-only  read-create
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of CANCEL requests
             received by specifies the time a SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.5" entity will wait
             for a response to the extension method request before
             retransmitting.  The retransmit timer doubles after
             each retransmission, ensuring an exponential backoff
             in network traffic."
       DEFVAL { 500 }
       ::= { sipMethodStatsEntry 7 sipCommonCfgTimerExtMethodEntry 3 }

   sipStatsCancelOuts

  sipCfgTimerExtMethodStatus OBJECT-TYPE
       SYNTAX      Counter32

Lingle/Maeng/Walker                                                 22      RowStatus
       MAX-ACCESS  read-only  read-create
       STATUS      current
       DESCRIPTION
            "This object reflects the total number
            "The row status of CANCEL requests
             sent the entry. This object is required
             to create or delete rows remotely by a manager.
             A value for sipCfgTimerExtMethodName must be set
             for row creation to be successful.  If that method
             already exists for a particular applIndex, the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.5" row
             create operation will fail."
       ::= { sipMethodStatsEntry 8 sipCommonCfgTimerExtMethodEntry 4 }

   sipStatsOptionsIns

   --
   -- SIP Retry Configuration
   --

   sipCommonCfgRetryTable OBJECT-TYPE
       SYNTAX      Counter32      SEQUENCE OF SipCommonCfgRetryEntry
       MAX-ACCESS  read-only not-accessible
       STATUS     current
       DESCRIPTION
            "This object reflects the total number table contains retry configuration objects applicable
             to SIP user agent and SIP proxies.  The instances of OPTIONS requests
             received by the
             SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.3" entities are uniquely identified by applIndex."
       ::= { sipMethodStatsEntry 9 sipCommonCfgRetry 1 }

   sipStatsOptionsOuts

   sipCommonCfgRetryEntry OBJECT-TYPE
       SYNTAX      Counter32     SipCommonCfgRetryEntry
       MAX-ACCESS  read-only not-accessible
       STATUS     current
       DESCRIPTION
            "This object reflects the total number
            "A row of OPTIONS requests
             sent by the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.3" retry configuration."
       INDEX { applIndex }
       ::= { sipMethodStatsEntry 10 sipCommonCfgRetryTable 1 }

   sipStatsRegisterIns

   SipCommonCfgRetryEntry ::=
       SEQUENCE {
                sipCfgRetryInvite            Unsigned32,
                sipCfgRetryAck               Unsigned32,
                sipCfgRetryBye               Unsigned32,
                sipCfgRetryCancel            Unsigned32,
                sipCfgRetryRegister          Unsigned32,
                sipCfgRetryOptions           Unsigned32,

   Lingle/Maeng/Mule/Walker                                         24
                sipCfgRetryInfo              Unsigned32,
                sipCfgRetryFinalResponse     Unsigned32,
                sipCfgRetryNonFinalResponse  Unsigned32
       }

   sipCfgRetryInvite OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32 (1..10)
       MAX-ACCESS  read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object reflects will specify the total number of REGISTER requests
             received by the times a SIP entity." entity
             will retry sending an INVITE request."
       REFERENCE
            "RFC 2543, Section 4.2.6" "Section 10.5 RFC 2543"
       DEFVAL { 6 }
       ::= { sipMethodStatsEntry 11 sipCommonCfgRetryEntry 1 }

   sipStatsRegisterOuts

   sipCfgRetryAck OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32(1..10)
       MAX-ACCESS  read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object reflects will specify the total number of REGISTER requests
             sent by the times a SIP entity." entity
             will retry sending an ACK request."
       REFERENCE
            "RFC 2543, Section 4.2.6" "Section 10.5 RFC 2543"
       DEFVAL { 6 }
       ::= { sipMethodStatsEntry 12 sipCommonCfgRetryEntry 2 }

   --

Lingle/Maeng/Walker                                                 23
   -- support for extension methods
   --

   sipStatsExtMethodTable

   sipCfgRetryBye OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipStatsExtMethodEntry      Unsigned32 (1..10)
       MAX-ACCESS  not-accessible  read-write
       STATUS      current
       DESCRIPTION
            "This table contains object will specify the list number of extension methods which
             each times a SIP entity in this system has been requested to
             monitor. The instances of SIP entities are uniquely
             identified by applIndex."
             will retry sending a BYE request."
       REFERENCE "Section 10.4 RFC 2543"
       DEFVAL { 6 }
       ::= { sipCommonStatsMethod 2 sipCommonCfgRetryEntry 3 }

   sipStatsExtMethodEntry

   sipCfgRetryCancel OBJECT-TYPE
       SYNTAX      SipStatsExtMethodEntry      Unsigned32 (1..10)
       MAX-ACCESS  not-accessible  read-write
       STATUS      current
       DESCRIPTION
            "This row contains information on a particular extension
             method that object will specify the number of times a SIP entity has been requested to monitor."
       INDEX
             will retry sending a CANCEL request."
       REFERENCE "Section 10.4 RFC 2543"
       DEFVAL { applIndex, sipStatsExtMethodIndex 6 }
       ::= { sipStatsExtMethodTable 1 }

   SipStatsExtMethodEntry ::=
       SEQUENCE {
                sipStatsExtMethodIndex      Unsigned32,
          sipStatsExtMethodName       SnmpAdminString,
          sipStatsExtMethodIns        Counter32,
          sipStatsExtMethodOuts       Counter32,
          sipStatsExtMethodStatus     RowStatus sipCommonCfgRetryEntry 4 }

   sipStatsExtMethodIndex

   sipCfgRetryRegister OBJECT-TYPE
       SYNTAX      Unsigned32 (1..4294967295) (1..10)
       MAX-ACCESS  not-accessible  read-write
       STATUS      current
       DESCRIPTION
            "This object uniquely identifies a conceptual row in will specify the
             table." number of times a SIP entity
             will retry sending a REGISTER request."
       REFERENCE "Section 10.4 RFC 2543"

   Lingle/Maeng/Mule/Walker                                         25
       DEFVAL { 6 }
       ::= { sipStatsExtMethodEntry 1 sipCommonCfgRetryEntry 5 }

   sipStatsExtMethodName

   sipCfgRetryOptions OBJECT-TYPE
       SYNTAX      SnmpAdminString      Unsigned32 (1..10)
       MAX-ACCESS  read-create  read-write
       STATUS      current
       DESCRIPTION
            "This object contains will specify the name number of the particular extension
             method that the SIP entity has been requested to monitor.
             For example, it may contain the string 'INFO' if the
             network management station has requested that the times a SIP entity count
             will retry sending an OPTIONS request."
       REFERENCE "Section 10.4 RFC2543"
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 6 }

   sipCfgRetryInfo OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of messages sent an received
             which containing times a SIP entity
             will retry sending an INFO method.  It is an error for any
             of the methods contained in request."
       REFERENCE "Section 2.4 RFC 2543 to be requested."

Lingle/Maeng/Walker                                                 24 2976"
       DEFVAL { 6 }
       ::= { sipStatsExtMethodEntry 2 sipCommonCfgRetryEntry 7 }

   sipStatsExtMethodIns

   sipCfgRetryFinalResponse OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32 (1..10)
       MAX-ACCESS  read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object reflects will specify the total number of requests received
             by the times a SIP entity which requested the method contained in
             the sipStatsExtMethodName column."
             will retry sending a final response and expecting an ACK."
       DEFVAL { 6 }
       ::= { sipStatsExtMethodEntry 3 sipCommonCfgRetryEntry 8 }

   sipStatsExtMethodOuts

   sipCfgRetryNonFinalResponse OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32 (1..10)
       MAX-ACCESS  read-only  read-write
       STATUS      current
       DESCRIPTION
            "This object reflects will specify the total number of requests sent
             by the times a SIP entity which requested the method contained in
             the sipStatsExtMethodName column."
             will retry sending a non-final response."
       DEFVAL { 6 }
           ::= { sipStatsExtMethodEntry 4 sipCommonCfgRetryEntry 9 }

   sipStatsExtMethodStatus

   --
   -- Retry Extensions: support for extension methods
   --
   sipCommonCfgRetryExtMethodTable OBJECT-TYPE
       SYNTAX      RowStatus      SEQUENCE OF SipCommonCfgRetryExtMethodEntry
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "The row status of the entry. This object is required
             to create or delete rows remotely by a manager."
       ::= { sipStatsExtMethodEntry 5 }

   --
   -- SIP Response Status Codes
   --
   sipStatusCodesTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipStatusCodesEntry
       MAX-ACCESS  not-accessible  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains statistics on response status code
             classes retry configuration for each SIP entity in
             extension method this system. entity supports. The instances

   Lingle/Maeng/Mule/Walker                                         26
             of SIP entities are uniquely identified by applIndex."
       ::= { sipCommonStatusCode 1 sipCommonCfgTimer 3 }

   sipStatusCodesEntry

   sipCommonCfgRetryExtMethodEntry  OBJECT-TYPE
       SYNTAX      SipStatusCodesEntry      SipCommonCfgRetryExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains statistics on response status codes." retry configuration information for
             a particular extension method."
       INDEX { applIndex applIndex, sipCommonCfgRetryExtMethodIndex }
       ::= { sipStatusCodesTable sipCommonCfgRetryExtMethodTable 1 }

Lingle/Maeng/Walker                                                 25
   SipStatusCodesEntry

   SipCommonCfgRetryExtMethodEntry ::=
       SEQUENCE {
                sipStatsInfoClassIns          Counter32,
                sipStatsInfoClassOuts         Counter32,
                sipStatsSuccessClassIns       Counter32,
                sipStatsSuccessClassOuts      Counter32,
                sipStatsRedirClassIns         Counter32,
                sipStatsRedirClassOuts        Counter32,
                sipStatsReqFailClassIns       Counter32,
                sipStatsReqFailClassOuts      Counter32,
                sipStatsServerFailClassIns    Counter32,
                sipStatsServerFailClassOuts   Counter32,
                sipStatsGlobalFailClassIns    Counter32,
                sipStatsGlobalFailClassOuts   Counter32
          sipCfgRetryExtMethodIndex      Unsigned32,
          sipCfgRetryExtMethodName       SnmpAdminString,
          sipCfgRetryExtMethodRetry      Unsigned32,
          sipCfgRetryExtMethodStatus     RowStatus
       }

   sipStatsInfoClassIns

   sipCfgRetryExtMethodIndex OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32 (1..4294967295)
       MAX-ACCESS  read-only  not-accessible
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 1xx class
             SIP responses received by the SIP entity.
             This class of responses relates to providing some
             information concerning the progress of processing uniquely identifies a SIP request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.1" conceptual row in the
             table."
       ::= { sipStatusCodesEntry sipCommonCfgRetryExtMethodEntry 1 }

   sipStatsInfoClassOuts

   sipCfgRetryExtMethodName OBJECT-TYPE
       SYNTAX      Counter32      SnmpAdminString
       MAX-ACCESS  read-only  read-create
       STATUS      current
       DESCRIPTION
            "This object reflects contains the number name of 1xx class
             SIP responses sent by the particular extension
             method the SIP entity.
             This class of responses relates to providing some
             information concerning entity supports.  For example, it may
             contain the progress string 'REFER' if the  REFER method is supported.
             It is an error for any of processing
             a SIP request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.1" the methods contained in RFC 2543
             to be requested."
       ::= { sipStatusCodesEntry sipCommonCfgRetryExtMethodEntry 2 }

   sipStatsSuccessClassIns

   sipCfgRetryExtMethodRetry OBJECT-TYPE
       SYNTAX      Counter32      Unsigned32
       MAX-ACCESS  read-only  read-create
       STATUS      current
       DESCRIPTION
            "This object reflects specifies the number of 2xx class SIP
             responses received by the SIP entity. This class of
             responses relate to successful completion of times a SIP
             request."
       REFERENCE

Lingle/Maeng/Walker                                                 26
            "RFC 2543, Sections 5.1.1 & 7.2" entity
             will retry sending its request for this particular
             extension method."
       DEFVAL { 6 }
       ::= { sipStatusCodesEntry sipCommonCfgRetryExtMethodEntry 3 }

   sipStatsSuccessClassOuts

  sipCfgRetryExtMethodStatus OBJECT-TYPE
       SYNTAX      Counter32      RowStatus
       MAX-ACCESS  read-only  read-create
       STATUS      current

   Lingle/Maeng/Mule/Walker                                         27
       DESCRIPTION
            "This object reflects the number
            "The row status of 2xx class SIP
             responses sent by the SIP entity. entry. This class of
             responses relate object is required
             to successful completion of create or delete rows remotely by a SIP
             request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.2" manager.
             A value for sipCfgRetryExtMethodName must be set
             for row creation to be successful.  If that method
             already exists for a particular applIndex, the row
             create operation will fail."
       ::= { sipStatusCodesEntry sipCommonCfgRetryExtMethodEntry 4 }

   sipStatsRedirClassIns

   --
   -- Common Statistics Objects
   --

   --
   -- Summary Statistics
   --
   sipSummaryStatsTable OBJECT-TYPE
       SYNTAX      Counter32     SEQUENCE OF SipSummaryStatsEntry
       MAX-ACCESS  read-only not-accessible
       STATUS     current
       DESCRIPTION
            "This object reflects table contains the number of 3xx class summary statistics objects
             applicable to all SIP
             responses received by the entities.  Each row represents
             those objects for a particular SIP entity. This class entity present in
             this system.  The instances of
             responses relate to call redirection actions taken SIP entities are uniquely
             identified by a Redirect Server."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.3" applIndex."
       ::= { sipStatusCodesEntry 5 sipCommonStatsSummary 1 }

   sipStatsRedirClassOuts

   sipSummaryStatsEntry OBJECT-TYPE
       SYNTAX      Counter32     SipSummaryStatsEntry
       MAX-ACCESS  read-only not-accessible
       STATUS     current
       DESCRIPTION
            "This object reflects the number of 3xx class SIP
             responses sent by the SIP entity. This class
            "A row of
             responses relate to call redirection actions taken
             by a Redirect Server."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.3" summary statistics."
       INDEX { applIndex }
       ::= { sipStatusCodesEntry 6 sipSummaryStatsTable 1 }

   sipStatsReqFailClassIns

   SipSummaryStatsEntry ::=
       SEQUENCE {
                sipSummaryInRequests         Counter32,
                sipSummaryOutRequests        Counter32,
                sipSummaryInResponses        Counter32,
                sipSummaryOutResponses       Counter32,
                sipSummaryTotalTransactions  Counter32
       }

   sipSummaryInRequests OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object reflects indicates the total number of 4xx class SIP
             responses request
             messages received by the SIP entity. This class of
             responses reflect request failure by a SIP entity
             providing a client function."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.4" including
             retransmissions."
       ::= { sipStatusCodesEntry 7 sipSummaryStatsEntry 1 }

Lingle/Maeng/Walker                                                 27
   sipStatsReqFailClassOuts

   Lingle/Maeng/Mule/Walker                                         28
   sipSummaryOutRequests OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object reflects contains the total number of 4xx class SIP
             responses request
             messages sent out (originated and relayed) by the SIP
             entity. This class of
             responses reflect request failure by  Where a SIP entity
             providing particular message is sent more than
             once, for example as a server function."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.4" retransmission, or as a result of
             forking, each transmission is counted separately."
       ::= { sipStatusCodesEntry 8 sipSummaryStatsEntry 2 }

   sipStatsServerFailClassIns

   sipSummaryInResponses OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object reflects contains the total number of 5xx class SIP
             responses response
             messages received by the SIP entity. This class of
             responses reflect failure responses received by a
             SIP entity providing a client function.  These
             responses are not definite failures and must not
             terminate a search if other possible locations remain
             untried."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.5" including
             retransmissions."
       ::= { sipStatusCodesEntry 9 sipSummaryStatsEntry 3 }

   sipStatsServerFailClassOuts

   sipSummaryOutResponses OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object reflects contains the total number of 5xx class SIP
             responses response
             messages sent (originated and relayed) by the SIP entity. This class of
             responses reflect failure responses sent by a SIP entity providing a server function.  These
             responses are not definite failures and must not
             terminate a search if other possible locations remain
             untried."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.5"
             including retransmissions."
       ::= { sipStatusCodesEntry 10 sipSummaryStatsEntry 4 }

   sipStatsGlobalFailClassIns

   sipSummaryTotalTransactions OBJECT-TYPE
       SYNTAX Counter32
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
            "This object reflects the number contains a count of 6xx class SIP
             responses received by the SIP entity. This class number of
             responses reflect failure responses received by a

Lingle/Maeng/Walker                                                 28 transactions
             completed or in progress.

             A SIP entity providing transaction occurs between a client function.

             The responses generally indicate that and a server has
             definitive information about a particular called party,
             not just and
             comprises all messages from the particular instance indicated in first request sent from
             the
             Request-URI.  All further searches for this user are
             doomed client to failure and pending searches should be
             terminated."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.6"
       ::= { sipStatusCodesEntry 11 }

   sipStatsGlobalFailClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 6xx class SIP
             responses server up to a final (non-1xx) response
             sent by from the SIP entity. This class of
             responses reflect failure responses sent server to the client.

             A transaction is identified by the CSeq sequence number
             within a SIP
             entity providing a server function. single call leg.  The responses generally indicate that a server ACK request has
             definitive information about a particular called party,
             not just the particular instance indicated in same
             CSeq number as the
             Request-URI.  All further searches for this user are
             doomed to failure and pending searches should be
             terminated."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.6" corresponding INVITE request, but
             comprises a transaction of its own.

             In the case of a forked request, all branches count as a
             single transaction."
       ::= { sipStatusCodesEntry 12 sipSummaryStatsEntry 5 }

   --

   Lingle/Maeng/Mule/Walker                                         29
   -- support SIP Method Statistics
   -- Total counts for specific status codes each SIP method.
   --

   sipCommonStatusCodeTable
   sipMethodStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipCommonStatusCodeEntry SipMethodStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the list of per method statistics objects
             applicable to all SIP status codes which
             each entities.  Each row represents
             those objects for a particular SIP entity present in
             this system has been requested to
             monitor. system.  The instances of SIP entities are uniquely
             identified by applIndex."
       ::= { sipCommonStatusCode 2 sipCommonStatsMethod 1 }

   sipCommonStatusCodeEntry

   sipMethodStatsEntry OBJECT-TYPE
       SYNTAX      SipCommonStatusCodeEntry     SipMethodStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This
            "A row contains information on a particular SIP status
             code that the SIP entity has been requested to monitor."

Lingle/Maeng/Walker                                                 29 of per method statistics."
       INDEX { applIndex, sipCommonStatusCodeValue applIndex }
       ::= { sipCommonStatusCodeTable sipMethodStatsTable 1 }

   SipCommonStatusCodeEntry

   SipMethodStatsEntry ::=
       SEQUENCE {
          sipCommonStatusCodeValue      INTEGER,
          sipCommonStatusCodeIns
                sipStatsInviteIns          Counter32,
          sipCommonStatusCodeOuts
                sipStatsInviteOuts         Counter32,
          sipCommonStatusCodeSendNotif  TruthValue,
          sipCommonStatusCodeStatus     RowStatus
                sipStatsAckIns             Counter32,
                sipStatsAckOuts            Counter32,
                sipStatsByeIns             Counter32,
                sipStatsByeOuts            Counter32,
                sipStatsCancelIns          Counter32,
                sipStatsCancelOuts         Counter32,
                sipStatsOptionsIns         Counter32,
                sipStatsOptionsOuts        Counter32,
                sipStatsRegisterIns        Counter32,
                sipStatsRegisterOuts       Counter32,
                sipStatsInfoIns            Counter32,
                sipStatsInfoOuts           Counter32
       }

   sipCommonStatusCodeValue

   sipStatsInviteIns OBJECT-TYPE
       SYNTAX      INTEGER (100..999)      Counter32
       MAX-ACCESS  not-accessible  read-only
       STATUS      current
       DESCRIPTION
            "This object contains a SIP status code value that reflects the SIP
             entity has been requested to monitor.  All total number of INVITE requests
             received by the other
             information in the row is related to this value." SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.1"
       ::= { sipCommonStatusCodeEntry sipMethodStatsEntry 1 }

   sipCommonStatusCodeIns

   sipStatsInviteOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current

   Lingle/Maeng/Mule/Walker                                         30
       DESCRIPTION
            "This object reflects the total number of response messages
             received INVITE requests
             sent by the SIP entity with the status code value
             contained in the sipCommonStatusCodeValue column." entity."
       REFERENCE
            "RFC 2543, Section 4.2.1"
       ::= { sipCommonStatusCodeEntry sipMethodStatsEntry 2 }

   sipCommonStatusCodeOuts

   sipStatsAckIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of response messages
             sent ACK requests
             received by the SIP entity with the status code value
             contained in the sipCommonStatusCodeValue column." entity."
       REFERENCE
            "RFC 2543, Section 4.2.2"
       ::= { sipCommonStatusCodeEntry sipMethodStatsEntry 3 }

   sipCommonStatusCodeSendNotif

   sipStatsAckOuts OBJECT-TYPE
       SYNTAX      TruthValue      Counter32
       MAX-ACCESS  read-create  read-only
       STATUS      current
       DESCRIPTION
            "This object controls whether a notification is sent when
             the status code value specified in reflects the
             sipCommonStatusCodeValue column is total number of ACK requests sent or received.
             If
             by the value of this object is TRUE, then a notification
             is sent.  If it is FALSE, no notification is sent."
       DEFVAL { false } SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.2"
       ::= { sipCommonStatusCodeEntry sipMethodStatsEntry 4 }

Lingle/Maeng/Walker                                                 30
   sipCommonStatusCodeStatus

   sipStatsByeIns OBJECT-TYPE
       SYNTAX      RowStatus      Counter32
       MAX-ACCESS  read-create  read-only
       STATUS      current
       DESCRIPTION
            "The row status of the entry. This
            "This object is required
             to create or delete rows remotely reflects the total number of BYE requests
             received by a manager." the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.4"
       ::= { sipCommonStatusCodeEntry sipMethodStatsEntry 5 }

   --
   -- Transaction Statistics
   --
   sipCurrentTransTable

   sipStatsByeOuts OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipCurrentTransEntry      Counter32
       MAX-ACCESS not-accessible  read-only
       STATUS      current
       DESCRIPTION
            "This table contains information on object reflects the transactions
             currently awaiting definitive responses by each SIP
             entity in this system.  The instances total number of SIP entities
             are uniquely identified BYE requests sent
             by applIndex." the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.4"
       ::= { sipCommonStatsTrans 1 sipMethodStatsEntry 6 }

   sipCurrentTransEntry

   sipStatsCancelIns OBJECT-TYPE
       SYNTAX     SipCurrentTransEntry      Counter32
       MAX-ACCESS not-accessible  read-only
       STATUS      current
       DESCRIPTION
            "Information on a particular
            "This object reflects the total number of CANCEL requests

   Lingle/Maeng/Mule/Walker                                         31
             received by the SIP entities' current
             transactions."
       INDEX { applIndex }
       ::= { sipCurrentTransTable 1 }

   SipCurrentTransEntry entity."
       REFERENCE
            "RFC 2543, Section 4.2.5"
       ::=
       SEQUENCE {
                sipCurrentTransactions  Gauge32 sipMethodStatsEntry 7 }

   sipCurrentTransactions

   sipStatsCancelOuts OBJECT-TYPE
       SYNTAX     Gauge32 (0..4294967295)      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the total number of transactions awaiting
             definitive (non-1xx) response.  In CANCEL requests
             sent by the case of a forked
             request, all branches count as a single transaction.  The
             value of this SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.5"
       ::= { sipMethodStatsEntry 8 }

   sipStatsOptionsIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object will reflect reflects the total number of rows in
             sipTransactionTable." OPTIONS requests
             received by the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.3"
       ::= { sipCurrentTransEntry 1 sipMethodStatsEntry 9 }

   sipTransactionTable

   sipStatsOptionsOuts OBJECT-TYPE

Lingle/Maeng/Walker                                                 31
       SYNTAX     SEQUENCE OF SipTransactionEntry      Counter32
       MAX-ACCESS not-accessible  read-only
       STATUS      current
       DESCRIPTION
            "This table contains information on all of object reflects the transactions
             currently being processed (the count total number of such transactions
             is maintained in the sipCurrentTransactions object) OPTIONS requests
             sent by a
             particular SIP entity in this system. The instances of the SIP
             entities are uniquely identified by applIndex." entity."
       REFERENCE
            "RFC 2543, Section 4.2.3"
       ::= { sipCommonStatsTrans 2 sipMethodStatsEntry 10 }

   sipTransactionEntry

   sipStatsRegisterIns OBJECT-TYPE
       SYNTAX     SipTransactionEntry      Counter32
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Information on a particular current transaction."
       INDEX { applIndex, sipTransIndex }
       ::= { sipTransactionTable 1 }

   SipTransactionEntry ::=
       SEQUENCE {
                sipTransIndex                         Unsigned32,
                sipTransTo                            SnmpAdminString,
                sipTransFrom                          SnmpAdminString,
                sipTransCallId                        SnmpAdminString,
                sipTransCSeq                          Unsigned32,
                sipTransState                         INTEGER,
                sipTransNumOutstandingBranches        Integer32,
                sipTransExpiry                        DateAndTime,
                sipTransCallingPartyContentType       SnmpAdminString,
                sipTransCalledPartyContentType        SnmpAdminString
       }

   sipTransIndex OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       MAX-ACCESS not-accessible  read-only
       STATUS      current
       DESCRIPTION
            "This object uniquely identifies a conceptual row in reflects the
             table." total number of REGISTER requests
             received by the SIP entity."
       REFERENCE
            "RFC 2543, Section 4.2.6"
       ::= { sipTransactionEntry 1 sipMethodStatsEntry 11 }

   sipTransTo

   sipStatsRegisterOuts OBJECT-TYPE
       SYNTAX     SnmpAdminString      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the value total number of REGISTER requests
             sent by the To header in request
             message." SIP entity."
       REFERENCE

   Lingle/Maeng/Mule/Walker                                         32
            "RFC 2543, Section 4.2.6"
       ::= { sipTransactionEntry 2 sipMethodStatsEntry 12 }

   sipTransFrom

   sipStatsInfoIns OBJECT-TYPE
       SYNTAX     SnmpAdminString

Lingle/Maeng/Walker                                                 32      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the value total number of INFO requests
             received by the From header in the
             request message." SIP entity."
       REFERENCE
            "RFC 2976"
       ::= { sipTransactionEntry 3 sipMethodStatsEntry 13 }

   sipTransCallId

   sipStatsInfoOuts OBJECT-TYPE
       SYNTAX     SnmpAdminString      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the value total number of INFO requests
             sent by the CallId value in the
             request message." SIP entity."
       REFERENCE
            "RFC 2976"
       ::= { sipTransactionEntry 4 sipMethodStatsEntry 14 }

   sipTransCSeq

   --
   -- support for extension methods
   --

   sipStatsExtMethodTable OBJECT-TYPE
       SYNTAX     Unsigned32      SEQUENCE OF SipStatsExtMethodEntry
       MAX-ACCESS read-only  not-accessible
       STATUS      current
       DESCRIPTION
            "This object table contains the CSeq value for the current
             transaction." list of extension methods which
             each SIP entity in this system has been requested to
             monitor. The instances of SIP entities are uniquely
             identified by applIndex."
       ::= { sipTransactionEntry 5 sipCommonStatsMethod 2 }

   sipTransState

   sipStatsExtMethodEntry OBJECT-TYPE
       SYNTAX     INTEGER {
                          null(1),
                          initial(2),
                          calling(3),
                          ringing(4),
                          completed(5),
                          callProceeding(6),
                          failure(7),
                          success(8),
                          confirmed(9)
                  }      SipStatsExtMethodEntry
       MAX-ACCESS read-only  not-accessible
       STATUS      current
       DESCRIPTION
            "This object row contains information on a particular extension
             method that the current state of the SIP
             transaction.

             null(1)           : The SIP entity is not active.
             initial(2)        : Prior has been requested to sending or receiving any
                                 request.
             calling(3)        : After sending the request and prior to
                                 receiving any response.
             ringing(4)        : After receiving one or more
                                 informational (1xx) responses.
             completed(5)      : After ACK has been sent following
                                 reception of definitive response.
             callProceeding(6) : Entered on reception of an INVITE.
             failure(7)        : Entered when call fails(send status

Lingle/Maeng/Walker                                                 33
                                 code>=300).
             success(8)        : Entered when user answers(send status
                                 code=200).
             confirmed(9)      : Entered on reception of an ACK in
                                 failure or success states."
       REFERENCE
           "RFC 2543, Figures 12 and 13" monitor."
       INDEX { applIndex, sipStatsExtMethodIndex }
       ::= { sipTransactionEntry 6 sipStatsExtMethodTable 1 }

   sipTransNumOutstandingBranches

   SipStatsExtMethodEntry ::=
       SEQUENCE {
                sipStatsExtMethodIndex      Unsigned32,
                sipStatsExtMethodName       SnmpAdminString,
                sipStatsExtMethodIns        Counter32,
                sipStatsExtMethodOuts       Counter32,
                sipStatsExtMethodStatus     RowStatus

   Lingle/Maeng/Mule/Walker                                         33
       }

   sipStatsExtMethodIndex OBJECT-TYPE
       SYNTAX     Integer32 (0..255)      Unsigned32 (1..4294967295)
       MAX-ACCESS read-only  not-accessible
       STATUS      current
       DESCRIPTION
            "This object contains uniquely identifies a count of conceptual row in the number of branches
             awaiting a final response.  Only a forking proxy will have
             a value greater than one."
             table."
       ::= { sipTransactionEntry 7 sipStatsExtMethodEntry 1 }

   sipTransExpiry

   sipStatsExtMethodName OBJECT-TYPE
       SYNTAX     DateAndTime      SnmpAdminString
       MAX-ACCESS read-only  read-create
       STATUS      current
       DESCRIPTION
            "This object contains an indication the name of when the transaction
             will be considered particular extension
             method that the SIP entity has been requested to have timed out.  This value is based
             on monitor.
             For example, it may contain the value in string 'REFER' if the Expires header, or
             network management station has requested that the value SIP
             entity count the number of messages sent an received
             which containing a REFER  method.  It is an error for any
             of the
             sipInviteTimeout object if no Expires value was
             specified methods contained in the original request." RFC 2543 to be requested."
       ::= { sipTransactionEntry 8 sipStatsExtMethodEntry 2 }

   sipTransCallingPartyContentType

   sipStatsExtMethodIns OBJECT-TYPE
       SYNTAX     SnmpAdminString      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the content type total number of requests received
             by the transaction,
             including parameters, as indicated by the session
             initiator. All optional white space is removed from
             subfields in SIP entity which requested the media-type specification.  It may
             indicate mime multipart, method contained in which case
             the multiple
             entries are separated by spaces."
       REFERENCE
            "RFC 2543, Section 6.16 and RFC 2068 section 3.7" sipStatsExtMethodName column."
       ::= { sipTransactionEntry 9 sipStatsExtMethodEntry 3 }

   sipTransCalledPartyContentType

   sipStatsExtMethodOuts OBJECT-TYPE
       SYNTAX     SnmpAdminString      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the content type total number of the transaction,
             including parameters, as indicated requests sent
             by the session
             respondant.  All optional white space is removed from

Lingle/Maeng/Walker                                                 34
             subfields in SIP entity which requested the media-type specification.  It may
             indicate mime multipart, method contained in which case
             the multiple
             entries are separated sipStatsExtMethodName column."
       ::= { sipStatsExtMethodEntry 4 }

   sipStatsExtMethodStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "The row status of the entry. This object is required
             to create or delete rows remotely by spaces."
       REFERENCE
            "RFC 2543, Section 6.16 and RFC 2068, Section 3.7" a manager."
       ::= { sipTransactionEntry 10 sipStatsExtMethodEntry 5 }

   --
   -- Other Common Statistics SIP Response Status Codes

   Lingle/Maeng/Mule/Walker                                         34
   --
   sipOtherStatsTable
   sipStatusCodesTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipOtherStatsEntry SipStatusCodesEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains other common statistics supported by on response status code
             classes for each SIP entity in this system. The instances
             of SIP entities are uniquely identified by applIndex."
       ::= { sipCommonStats 5 sipCommonStatusCode 1 }

   sipOtherStatsEntry

   sipStatusCodesEntry OBJECT-TYPE
       SYNTAX     SipOtherStatsEntry      SipStatusCodesEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "Information
            "This row contains statistics on a particular SIP entities' other common
             statistics." response status codes."
       INDEX { applIndex }
       ::= { sipOtherStatsTable sipStatusCodesTable 1 }

   SipOtherStatsEntry

   SipStatusCodesEntry ::=
       SEQUENCE {
                sipNumUnsupportedUris
                sipStatsInfoClassIns          Counter32,
                sipStatsInfoClassOuts         Counter32,
                sipStatsSuccessClassIns       Counter32,
                sipStatsSuccessClassOuts      Counter32,
                sipStatsRedirClassIns         Counter32,
                sipStatsRedirClassOuts        Counter32,
                sipStatsReqFailClassIns       Counter32,
                sipStatsReqFailClassOuts      Counter32,
                sipStatsServerFailClassIns    Counter32,
                sipStatsServerFailClassOuts   Counter32,
                sipStatsGlobalFailClassIns    Counter32,
                sipStatsGlobalFailClassOuts   Counter32
       }

   sipNumUnsupportedUris

   sipStatsInfoClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "Number
            "This object reflects the number of RequestURIs 1xx class
             SIP responses received with unsupported scheme.
             A server normally responds by the SIP entity.
             This class of responses relates to such requests with a 400 Bad
             Request status code."
       ::= { sipOtherStatsEntry 5 }

   --
   -- Notifications
   --
   sipCommonMIBNotifPrefix    OBJECT IDENTIFIER ::= { sipCommonMIB 7 }
   sipCommonMIBNotif          OBJECT IDENTIFIER ::= {
   sipCommonMIBNotifPrefix 0 }

Lingle/Maeng/Walker                                                 35
   sipStatusCodeNotif         NOTIFICATION-TYPE
       OBJECTS {
               sipStatusCodeNotifValue,
               sipStatusCodeNotifTo,
               sipStatusCodeNotifFrom,
               sipStatusCodeNotifCallId,
               sipStatusCodeNotifCSeq
       }
       STATUS  current
       DESCRIPTION
            "Signifies that providing some
             information concerning the progress of processing
             a specific status code has been used." SIP request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.1"
       ::= { sipCommonMIBNotif sipStatusCodesEntry 1 }

   sipStatusCodeNotifValue

   sipStatsInfoClassOuts OBJECT-TYPE
       SYNTAX     INTEGER (100..999)      Counter32
       MAX-ACCESS accessible-for-notify  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the status code that caused number of 1xx class
             SIP responses sent by the
             notification." SIP entity.

   Lingle/Maeng/Mule/Walker                                         35
             This class of responses relates to providing some
             information concerning the progress of processing
             a SIP request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.1"
       ::= { sipCommonMIBNotif sipStatusCodesEntry 2 }

   sipStatusCodeNotifTo

   sipStatsSuccessClassIns OBJECT-TYPE
       SYNTAX     SnmpAdminString      Counter32
       MAX-ACCESS accessible-for-notify  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the value number of 2xx class SIP
             responses received by the To header in the
             message containing the status code that caused the
             notification." SIP entity. This class of
             responses relate to successful completion of a SIP
             request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.2"
       ::= { sipCommonMIBNotif sipStatusCodesEntry 3 }

   sipStatusCodeNotifFrom

   sipStatsSuccessClassOuts OBJECT-TYPE
       SYNTAX     SnmpAdminString      Counter32
       MAX-ACCESS accessible-for-notify  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the value number of 2xx class SIP
             responses sent by the From header in the
             message containing the status code that caused the
             notification." SIP entity. This class of
             responses relate to successful completion of a SIP
             request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.2"
       ::= { sipCommonMIBNotif sipStatusCodesEntry 4 }

   sipStatusCodeNotifCallId

   sipStatsRedirClassIns OBJECT-TYPE
       SYNTAX     SnmpAdminString      Counter32
       MAX-ACCESS accessible-for-notify  read-only
       STATUS      current
       DESCRIPTION
            "This object contains reflects the value number of 3xx class SIP
             responses received by the CallId in the
             message containing the status code that caused the
             notification."
       ::= { sipCommonMIBNotif 5 }

   sipStatusCodeNotifCSeq SIP entity. This class of
             responses relate to call redirection actions taken
             by a Redirect Server."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.3"
       ::= { sipStatusCodesEntry 5 }

   sipStatsRedirClassOuts OBJECT-TYPE
       SYNTAX     Unsigned32

Lingle/Maeng/Walker                                                 36      Counter32
       MAX-ACCESS accessible-for-notify  read-only
       STATUS      current
       DESCRIPTION
            "This object contains the CSeq value in the message
             containing reflects the status code that caused number of 3xx class SIP
             responses sent by the notification."
       ::= { sipCommonMIBNotif 6 }

   --
   -- Conformance
   --
   sipCommonMIBConformance
     OBJECT IDENTIFIER SIP entity. This class of
             responses relate to call redirection actions taken
             by a Redirect Server."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.3"

   Lingle/Maeng/Mule/Walker                                         36
       ::= { sipCommonMIB sipStatusCodesEntry 6 }
   sipCommonMIBCompliances
     OBJECT IDENTIFIER ::= { sipCommonMIBConformance 1 }
   sipCommonMIBGroups
     OBJECT IDENTIFIER ::= { sipCommonMIBConformance 2 }

   --
   -- Compliance Statements
   --
   sipCommonCompliance MODULE-COMPLIANCE

   sipStatsReqFailClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "The compliance statement for
            "This object reflects the number of 4xx class SIP entities."

       MODULE -- this module
            MANDATORY-GROUPS { sipCommonConfigGroup,
                               sipCommonStatsGroup,
                               sipCommonNotifGroup }

       ::= { sipCommonMIBCompliances 1 }

   --
   -- Units
             responses received by the SIP entity. This class of Conformance
   --
   sipCommonConfigGroup OBJECT-GROUP
       OBJECTS
             responses reflect request failure by a SIP entity
             providing a client function."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.4"
       ::= {
               sipProtocolVersion,
               sipServiceOperStatus,
               sipServiceAdminStatus,
               sipServiceStartTime,
               sipServiceLastChange,
               sipTransport,
               sipPortStatus,
               sipUriSupported,
               sipFtrSupported,
               sipOrganization,
               sipMaxTransactions,
               sipInviteTimeout,
               sipHideOperation,
               sipUserLocationServerAddr,

Lingle/Maeng/Walker                                                 37
               sipCanUseCompact,
               sipRequestUriHostMatching,
               sipStatusCodeNotifValue,
               sipStatusCodeNotifTo,
               sipStatusCodeNotifFrom,
               sipStatusCodeNotifCallId,
               sipStatusCodeNotifCSeq sipStatusCodesEntry 7 }

   sipStatsReqFailClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "A collection
            "This object reflects the number of objects providing configuration common
             to all 4xx class SIP enities."
             responses sent by the SIP entity. This class of
             responses reflect request failure by a SIP entity
             providing a server function."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.4"
       ::= { sipCommonMIBGroups 1 }

   sipCommonStatsGroup OBJECT-GROUP
       OBJECTS {
               sipSummaryInRequests,
               sipSummaryOutRequests,
               sipSummaryInResponses,
               sipSummaryOutResponses,
               sipSummaryTotalTransactions,
               sipStatsInviteIns,
               sipStatsInviteOuts,
               sipStatsAckIns,
               sipStatsAckOuts,
               sipStatsByeIns,
               sipStatsByeOuts,
               sipStatsCancelIns,
               sipStatsCancelOuts,
               sipStatsOptionsIns,
               sipStatsOptionsOuts,
               sipStatsRegisterIns,
               sipStatsRegisterOuts,
               sipStatsExtMethodName,
               sipStatsExtMethodIns,
               sipStatsExtMethodOuts,
               sipStatsExtMethodStatus,
               sipStatsInfoClassIns,
               sipStatsInfoClassOuts,
               sipStatsSuccessClassIns,
               sipStatsSuccessClassOuts,
               sipStatsRedirClassIns,
               sipStatsRedirClassOuts,
               sipStatsReqFailClassIns,
               sipStatsReqFailClassOuts,
               sipStatsServerFailClassIns,
               sipStatsServerFailClassOuts,
               sipStatsGlobalFailClassIns,
               sipStatsGlobalFailClassOuts,
               sipCommonStatusCodeIns,
               sipCommonStatusCodeOuts,
               sipCommonStatusCodeSendNotif,
               sipCommonStatusCodeStatus,
               sipCurrentTransactions,

Lingle/Maeng/Walker                                                 38
               sipTransTo,
               sipTransFrom,
               sipTransCallId,
               sipTransCSeq,
               sipTransState,
               sipTransNumOutstandingBranches,
               sipTransExpiry,
               sipTransCallingPartyContentType,
               sipTransCalledPartyContentType,
               sipNumUnsupportedUris sipStatusCodesEntry 8 }

   sipStatsServerFailClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "A collection
            "This object reflects the number of objects providing statistics common
             toall 5xx class SIP entities."
             responses received by the SIP entity. This class of
             responses reflect failure responses received by a
             SIP entity providing a client function.  These
             responses are not definite failures and must not
             terminate a search if other possible locations remain
             untried."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.5"
       ::= { sipCommonMIBGroups 2 }

   sipCommonNotifGroup NOTIFICATION-GROUP
       NOTIFICATIONS {
               sipStatusCodeNotif sipStatusCodesEntry 9 }

   sipStatsServerFailClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "A collection
            "This object reflects the number of notifications common to all 5xx class SIP entities."
             responses sent by the SIP entity. This class of
             responses reflect failure responses sent by a SIP
             entity providing a server function.  These
             responses are not definite failures and must not
             terminate a search if other possible locations remain
             untried."
       REFERENCE

   Lingle/Maeng/Mule/Walker                                         37
            "RFC 2543, Sections 5.1.1 & 7.5"
       ::= { sipCommonMIBGroups 3 sipStatusCodesEntry 10 }

   END

5.4. SIP User Agent

   SIP-UA-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        Counter32,
        Integer32
             FROM SNMPv2-SMI

        MODULE-COMPLIANCE,
        OBJECT-GROUP,
        NOTIFICATION-GROUP
             FROM SNMPv2-CONF

        sipMIB
             FROM SIP-MIB-SMI

        applIndex
             FROM NETWORK-SERVICES-MIB;

   sipUAMIB MODULE-IDENTITY
        LAST-UPDATED   "200007080000Z"

Lingle/Maeng/Walker                                                 39
        ORGANIZATION   "IETF

   sipStatsGlobalFailClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 6xx class SIP Working Group,
             responses received by the SIP entity. This class of
             responses reflect failure responses received by a
             SIP entity providing a client function.

             The responses generally indicate that a server has
             definitive information about a particular called party,
             not just the particular instance indicated in the
             Request-URI.  All further searches for this user are
             doomed to failure and pending searches should be
             terminated."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.6"
       ::= { sipStatusCodesEntry 11 }

   sipStatsGlobalFailClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 6xx class SIP
             responses sent by the SIP entity. This class of
             responses reflect failure responses sent by a SIP
             entity providing a server function.

             The responses generally indicate that a server has
             definitive information about a particular called party,
             not just the particular instance indicated in the
             Request-URI.  All further searches for this user are
             doomed to failure and pending searches should be
             terminated."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.6"
       ::= { sipStatusCodesEntry 12 }

   --
   -- support for specific status codes
   --
   sipCommonStatusCodeTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipCommonStatusCodeEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains the list of SIP status codes which
             each SIP entity in this system has been requested to
             monitor. It is the mechanism by which specific status
             codes are monitored.  The instances of SIP entities are
             uniquely identified by applIndex."
       ::= { sipCommonStatusCode 2 }

   Lingle/Maeng/Mule/Walker                                         38
   sipCommonStatusCodeEntry OBJECT-TYPE
       SYNTAX      SipCommonStatusCodeEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains information on a particular SIP status
             code that the SIP entity has been requested to monitor."
       INDEX { applIndex, sipCommonStatusCodeValue }
       ::= { sipCommonStatusCodeTable 1 }

   SipCommonStatusCodeEntry ::=
       SEQUENCE {
          sipCommonStatusCodeValue      INTEGER,
          sipCommonStatusCodeIns        Counter32,
          sipCommonStatusCodeOuts       Counter32,
          sipCommonStatusCodeStatus     RowStatus
       }

   sipCommonStatusCodeValue OBJECT-TYPE
       SYNTAX      INTEGER (100..999)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This object contains a SIP status code value that the SIP
             entity has been requested to monitor.  All of the other
             information in the row is related to this value."
       ::= { sipCommonStatusCodeEntry 1 }

   sipCommonStatusCodeIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of response messages
             received by the SIP entity with the status code value
             contained in the sipCommonStatusCodeValue column."
       ::= { sipCommonStatusCodeEntry 2 }

   sipCommonStatusCodeOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of response messages
             sent by the SIP entity with the status code value
             contained in the sipCommonStatusCodeValue column."
       ::= { sipCommonStatusCodeEntry 3 }

   sipCommonStatusCodeStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "The row augmentation in sipCommonStatusCodeNotifTable
             will be governed by the value of this RowStatus.This
             object is required to create or delete rows remotely

   Lingle/Maeng/Mule/Walker                                         39
             by a manager.

             If set to 'notInService', all counters values may be
             reset to zero and any associated notifications will be
             disabled.  Associated notifications are specified in the
             sipCommonStatusCodeNotifTable.

             The configuration specified by an entry will be made
             active when this object is set to 'active'."
       ::= { sipCommonStatusCodeEntry 4 }

   --
   -- support for specific status code notifications
   --
   sipCommonStatusCodeNotifTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipCommonStatusCodeNotifEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains objects to control notifications
             related to particular status codes each SIP entity in
             this system has been requested to monitor.

             There is an entry in this table corresponding to each
             entry in sipCommonStatusCodeTable.  Therefore, this
             table augments that table and utilizes the same index
             methodology."
       ::= { sipCommonStatusCode 3 }

   sipCommonStatusCodeNotifEntry OBJECT-TYPE
       SYNTAX      SipCommonStatusCodeNotifEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains information controlling notifications
             for a particular SIP status code that the SIP entity has
             been requested to monitor."
       AUGMENTS { sipCommonStatusCodeEntry }
       ::= { sipCommonStatusCodeNotifTable 1 }

   SipCommonStatusCodeNotifEntry ::=
       SEQUENCE {
          sipCommonStatusCodeNotifSend     TruthValue,
          sipCommonStatusCodeNotifEmitMode INTEGER,
          sipCommonStatusCodeNotifThresh   Unsigned32,
          sipCommonStatusCodeNotifInterval TimeTicks
       }

   sipCommonStatusCodeNotifSend OBJECT-TYPE
       SYNTAX      TruthValue
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object controls whether a sipStatusCodeNotif
             is emitted when the status code value specified in
             by sipCommonStatusCodeValue is sent or received.
             If the value of this object is TRUE, then a notification

   Lingle/Maeng/Mule/Walker                                         40
             is sent.  If it is FALSE, no notification is sent.
             Note well, that a notification may be emitted for
             every msg sent or received that contains the particular
             status code.  Depending on the status code involved,
             this can cause a significant number of notification
             emissions that could be detrimental to network performance.
             Managers are forewarned to be prudent in the use of
             this object to enable notifications.  Look to
             sipCommonStatusCodeNotifEmitMode for alternative
             controls for sipStatusCodeNotif emissions."
       DEFVAL { false }
       ::= { sipCommonStatusCodeNotifEntry 1 }

   sipCommonStatusCodeNotifEmitMode OBJECT-TYPE
       SYNTAX      INTEGER {
                           normal(1),
                           oneShot(2),
                           triggered(3)  -- read-only
                   }
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "The object sipCommonStatusCodeNotifSend must be set
             to TRUE for the values of this object to have any
             effect.  It is recommended that the desired emit mode
             be established by this object prior to setting
             sipCommonStatusCodeNotifSend to TRUE.
             This object specifies the mode for emissions of
             sipStatusCodeNotif notifications.

             normal    : sipStatusCodeNotif notifications will
                         be emitted by the system for each
                         SIP response messages sent or received
                         that contains the desired status code.

             oneShot   : Only one sipStatusCodeNotif notification
                         will be emitted.  It will be the next
                         SIP response messages sent or received
                         that contains the desired status code.
                         No more notifs are emitted until this
                         object is set to either 'oneShot' again
                         or 'normal'.  This option is provided
                         as a means of quelling the potential
                         promiscuous behavior that can be associated
                         with the sipStatusCodeNotif.

             triggered : This value is only readable and cannot be
                         set.  It reflects when the 'oneShot' has
                         occurred and indicates the mode needs to
                         be reset to get further notifications.
                         The mode is reset by setting this object
                         to 'oneShot' or 'normal'."
       DEFVAL { normal }
       ::= { sipCommonStatusCodeNotifEntry 2 }

   sipCommonStatusCodeNotifThresh OBJECT-TYPE
       SYNTAX      Unsigned32

   Lingle/Maeng/Mule/Walker                                         41
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object specifies the number of response messages
             sent or received by this system that are considered
             excessive.  Based on crossing that threshold, a
             sipStatusCodeExceededNotif notification will be sent.
             The sipStatusCodeExceededNotif can be used as an
             early warning mechanism in lieu of using sipStatusCodeNotif."
       DEFVAL { 500 }
       ::= { sipCommonStatusCodeNotifEntry 3 }

   sipCommonStatusCodeNotifInterval OBJECT-TYPE
       SYNTAX      TimeTicks
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object specifies the time interval over which
             if sipCommonStatusCodeThresh is exceeded a
             sipCommonStatusCodeThresh notification will be sent."
       DEFVAL { 6000 } -- 60 seconds
       ::= { sipCommonStatusCodeNotifEntry 4 }

   --
   -- support for status code notification attributes.
   --
   sipStatusCodeNotifTo       OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS accessible-for-notify
       STATUS     current
       DESCRIPTION
            "This object contains the value of the To header in the
             message containing the status code that caused the
             notification."
       ::= { sipCommonStatusCode 4 }

   sipStatusCodeNotifFrom     OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS accessible-for-notify
       STATUS     current
       DESCRIPTION
            "This object contains the value of the From header in the
             message containing the status code that caused the
             notification."
       ::= { sipCommonStatusCode 5 }

   sipStatusCodeNotifCallId   OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS accessible-for-notify
       STATUS     current
       DESCRIPTION
            "This object contains the value of the CallId in the
             message containing the status code that caused the
             notification."
       ::= { sipCommonStatusCode 6 }

   sipStatusCodeNotifCSeq     OBJECT-TYPE

   Lingle/Maeng/Mule/Walker                                         42
       SYNTAX     Unsigned32
       MAX-ACCESS accessible-for-notify
       STATUS     current
       DESCRIPTION
            "This object contains the CSeq value in the message
             containing the status code that caused the notification."
       ::= { sipCommonStatusCode 7 }

   --
   -- Transaction Statistics
   --
   sipCurrentTransTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipCurrentTransEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains information on the transactions
             currently awaiting definitive responses by each SIP
             entity in this system.  The instances of SIP entities
             are uniquely identified by applIndex."
       ::= { sipCommonStatsTrans 1 }

   sipCurrentTransEntry OBJECT-TYPE
       SYNTAX     SipCurrentTransEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Information on a particular SIP entities' current
             transactions."
       INDEX { applIndex }
       ::= { sipCurrentTransTable 1 }

   SipCurrentTransEntry ::=
       SEQUENCE {
                sipCurrentTransactions  Gauge32
       }

   sipCurrentTransactions OBJECT-TYPE
       SYNTAX     Gauge32 (0..4294967295)
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the number of transactions awaiting
             definitive (non-1xx) response.  In the case of a forked
             request, all branches count as a single transaction.  The
             value of this object will reflect the number of rows in
             sipTransactionTable."
   ::= { sipCurrentTransEntry 1 }

   sipTransactionTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipTransactionEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains information on all of the transactions

   Lingle/Maeng/Mule/Walker                                         43
             currently being processed (the count of such transactions
             is maintained in the sipCurrentTransactions object) by a
             particular SIP entity in this system. The instances of SIP
             entities are uniquely identified by applIndex."
       ::= { sipCommonStatsTrans 2 }

   sipTransactionEntry OBJECT-TYPE
       SYNTAX     SipTransactionEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Information on a particular current transaction."
       INDEX { applIndex, sipTransIndex }
       ::= { sipTransactionTable 1 }

   SipTransactionEntry ::=
       SEQUENCE {
                sipTransIndex                         Unsigned32,
                sipTransTo                            SnmpAdminString,
                sipTransFrom                          SnmpAdminString,
                sipTransCallId                        SnmpAdminString,
                sipTransCSeq                          Unsigned32,
                sipTransState                         INTEGER,
                sipTransNumOutstandingBranches        Integer32,
                sipTransExpiry                        DateAndTime,
                sipTransCallingPartyContentType       SnmpAdminString,
                sipTransCalledPartyContentType        SnmpAdminString
       }

   sipTransIndex OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This object uniquely identifies a conceptual row in the
             table."
       ::= { sipTransactionEntry 1 }

   sipTransTo OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the value of the To header in request
             message."
       ::= { sipTransactionEntry 2 }

   sipTransFrom OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the value of the From header in the
             request message."
       ::= { sipTransactionEntry 3 }

   sipTransCallId OBJECT-TYPE

   Lingle/Maeng/Mule/Walker                                         44
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the value of the CallId value in the
             request message."
       ::= { sipTransactionEntry 4 }

   sipTransCSeq OBJECT-TYPE
       SYNTAX     Unsigned32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the CSeq value for the current
             transaction."
       ::= { sipTransactionEntry 5 }

   sipTransState OBJECT-TYPE
       SYNTAX     INTEGER {
                          null(1),
                          initial(2),
                          calling(3),
                          ringing(4),
                          completed(5),
                          callProceeding(6),
                          failure(7),
                          success(8),
                          confirmed(9)
                  }
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the current state of the SIP
             transaction.

             null(1)           : The SIP entity is not active.
             initial(2)        : Prior to sending or receiving any
                                 request.
             calling(3)        : After sending the request and prior to
                                 receiving any response.
             ringing(4)        : After receiving one or more
                                 informational (1xx) responses.
             completed(5)      : After ACK has been sent following
                                 reception of definitive response.
             callProceeding(6) : Entered on reception of an INVITE.
             failure(7)        : Entered when call fails(send status
                                 code>=300).
             success(8)        : Entered when user answers(send status
                                 code=200).
             confirmed(9)      : Entered on reception of an ACK in
                                 failure or success states."
       REFERENCE
           "RFC 2543, Figures 12 and 13"
   ::= { sipTransactionEntry 6 }

   sipTransNumOutstandingBranches OBJECT-TYPE
       SYNTAX     Integer32 (0..255)

   Lingle/Maeng/Mule/Walker                                         45
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains a count of the number of branches
             awaiting a final response.  Only a forking proxy will have
             a value greater than one."
       ::= { sipTransactionEntry 7 }

   sipTransExpiry OBJECT-TYPE
       SYNTAX     DateAndTime
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains an indication of when the transaction
             will be considered to have timed out.  This value is based
             on the value in the Expires header, or the value of the
             sipInviteTimeout object if no Expires value was
             specified in the original request."
       ::= { sipTransactionEntry 8 }

   sipTransCallingPartyContentType OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the content type of the transaction,
             including parameters, as indicated by the session
             initiator. All optional white space is removed from
             subfields in the media-type specification.  It may
             indicate mime multipart, in which case the multiple
             entries are separated by spaces."
       REFERENCE
            "RFC 2543, Section 6.16 and RFC 2068 section 3.7"
       ::= { sipTransactionEntry 9 }

   sipTransCalledPartyContentType OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the content type of the transaction,
             including parameters, as indicated by the session
             respondant.  All optional white space is removed from
             subfields in the media-type specification.  It may
             indicate mime multipart, in which case the multiple
             entries are separated by spaces."
       REFERENCE
            "RFC 2543, Section 6.16 and RFC 2068, Section 3.7"
       ::= { sipTransactionEntry 10 }

   --
   -- SIP MIB Team"
        CONTACT-INFO
                "SIP MIB Team email: sip-mib@egroups.com

                 Co-editor  Kevin Lingle
                            Cisco Systems, Inc.
                 postal:    7025 Kit Creek Road
                            P.O. Box 14987
                            Research Triangle Park, NC 27709
                            USA
                 email:     klingle@cisco.com
                 phone:     +1-919-392-2029

                 Co-editor  Joon Maeng
                            VTEL Corporation
                 postal:    108 Wild Basin Rd.
                            Austin, TX 78746
                            USA
                 email:     joon_maeng@vtel.com
                 phone:     +1-512-437-4567

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    80 Hines Road
                            Kanata, ON  K2K 2T8
                            Canada
                 email:     drwalker@ss8networks.com
                 phone:     +1 613 592 2100" Retry Statistics
   --
   -- The counter objects in this group correspond directly to the
   -- retry timers supported in sipCommonCfgRetry group.  applIndex can
   -- be used to correlate the two groups.

   Lingle/Maeng/Mule/Walker                                         46
   --
   --
   sipCommonStatsRetryTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipCommonStatsRetryEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains retry statistics objects applicable
             to each SIP entity in this system.  The instances of
             SIP entities are uniquely identified by applIndex."
       ::= { sipCommonStatsRetry 1 }

   sipCommonStatsRetryEntry OBJECT-TYPE
       SYNTAX     SipCommonStatsRetryEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of retry statistics."
       INDEX { applIndex }
       ::= { sipCommonStatsRetryTable 1 }

   SipCommonStatsRetryEntry ::=
       SEQUENCE {
                sipStatsRetryInvites           Counter32,
                sipStatsRetryAcks              Counter32,
                sipStatsRetryByes              Counter32,
                sipStatsRetryCancels           Counter32,
                sipStatsRetryRegisters         Counter32,
                sipStatsRetryOptions           Counter32,
                sipStatsRetryInfos             Counter32,
                sipStatsRetryFinalResponses    Counter32,
                sipStatsRetryNonFinalResponses Counter32
       }

   sipStatsRetryInvites OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
                "Initial version
            "This object reflects the total number of Session Initiation Protocol (SIP)
                 User Agent (UA) MIB module. INVITE retries
             that have been sent by the SIP entity.   If the number of
             'first attempt' INVITES is an application-layer signalling protocol for
                 creating, modifying and terminating multimedia
                 sessions with one or more participants. These sessions
                 include Internet multimedia conferences and Internet
                 telephone calls. of interest, subtract the value
             of this object from sipStatsInviteOuts."
       ::= { sipCommonStatsRetryEntry 1 }

   sipStatsRetryAcks OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of ACK retries
             that have been sent by the SIP entity.   If the number of
             'first attempt' ACKs is defined in RFC 2543 (March
                 1999).

                 A User Agent is an application of interest, subtract the value
             of this object from sipStatsAckOuts."
       ::= { sipCommonStatsRetryEntry 2 }

   sipStatsRetryByes OBJECT-TYPE

   Lingle/Maeng/Mule/Walker                                         47
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of BYE retries that contains both a
                 User Agent Client (UAC) and a User Agent Server (UAS).
                 A UAC
             have been sent by the SIP entity. If the number of
             'first attempt' BYEs is an application of interest, subtract the value
             of this object from sipStatsByeOuts."
       ::= { sipCommonStatsRetryEntry 3 }

   sipStatsRetryCancels OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of CANCEL retries
             that initiates a have been sent by the SIP request.
                 A UAS entity. If the number of
             'first attempt' CANCELs is an application of interest, subtract the value
             of this object from sipStatsCancelOuts."
       ::= { sipCommonStatsRetryEntry 4 }

   sipStatsRetryRegisters OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of REGISTER retries
             that contacts have been sent by the user when a SIP request entity.  If the number of
             'first attempt' REGISTERSs is received and that returns a response on
                 behalf of interest, subtract the user.  The response accepts, rejects, or
                 redirects the request." value
             of this object from sipStatsRegisterOuts."
       ::= { sipMIB 3 sipCommonStatsRetryEntry 5 }

   --
   -- sipUA group
   -- This group contains MIB objects related to

   sipStatsRetryOptions OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of OPTIONS retries
             that have been sent by the SIP User Agents.
   --
   sipUACfg                    OBJECT IDENTIFIER ::= { sipUAMIB 1 }

Lingle/Maeng/Walker                                                 40
   sipUACfgTimer               OBJECT IDENTIFIER entity.   If the number of
             'first attempt' OPTIONS is of interest, subtract the value
             of this object from sipStatsOptionsOuts."
       ::= { sipUACfg 1 sipCommonStatsRetryEntry 6 }
   sipUACfgRetry               OBJECT IDENTIFIER

   sipStatsRetryInfos OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of INFO retries that
             have been sent by the SIP entity.  If the number of
             'first attempt' INFOS is of interest, subtract the value
             of this object from sipStatsInfoOuts."
       ::= { sipUACfg 2 sipCommonStatsRetryEntry 7 }
   sipUAStats                  OBJECT IDENTIFIER

   sipStatsRetryFinalResponses OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only

   Lingle/Maeng/Mule/Walker                                         48
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of Final Response
             retries that have been sent by the SIP entity."
       ::= { sipUAMIB 2 sipCommonStatsRetryEntry 8 }
   sipUAStatsRetry             OBJECT IDENTIFIER

   sipStatsRetryNonFinalResponses OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of non-Final Response
             retries that have been sent by the SIP entity."
       ::= { sipUAStats 1 sipCommonStatsRetryEntry 9 }

   --
   -- User Agent Configuration
   --

   --
   -- SIP Timer Configuration Retry Extensions Stats: support for extension methods
   --
   sipUACfgTimerTable
   sipCommonStatsRetryExtMethodTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipUACfgTimerEntry SipCommonStatsRetryExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains timer configuration objects applicable
             to
       DESCRIPTION
            "This table contains retry statistics for each SIP user agent in
             extension method this system. entity supports. The instances
             of SIP entities are uniquely identified by applIndex."
       ::= { sipUACfgTimer 1 sipCommonStatsRetry 2 }

   sipUACfgTimerEntry

   sipCommonStatsRetryExtMethodEntry  OBJECT-TYPE
       SYNTAX     SipUACfgTimerEntry      SipCommonStatsRetryExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "A
            "This row of timer configuration."
       INDEX { applIndex } contains retry statistics for
             a particular extension method."

       ::= { sipUACfgTimerTable sipCommonStatsRetryExtMethodTable 1 }

   SipUACfgTimerEntry

   SipCommonStatsRetryExtMethodEntry ::=
       SEQUENCE {
                sipUACfgTimerTrying        Integer32,
                sipUACfgTimerProv          Integer32,
                sipUACfgTimerAck           Integer32,
                sipUACfgTimerDisconnect    Integer32,
                sipUACfgTimerReRegister    Integer32
          sipStatsRetryExtMethodIndex      Unsigned32,
          sipStatsRetryExtMethodName       SnmpAdminString,
          sipStatsRetryExtMethodRetries    Counter32,
          sipStatsRetryExtMethodStatus     RowStatus
       }

   sipUACfgTimerTrying

   sipStatsRetryExtMethodIndex OBJECT-TYPE
       SYNTAX      Integer32 (100..1000)
       UNITS       "milliseconds"      Unsigned32 (1..4294967295)
       MAX-ACCESS  read-write  not-accessible
       STATUS      current
       DESCRIPTION
            "This object specifies the time a user agent will wait to
             receive uniquely identifies a provisional response to an INVITE before
             resending conceptual row in the INVITE."
             table."
       ::= { sipUACfgTimerEntry sipCommonStatsRetryExtMethodEntry 1 }

   sipUACfgTimerProv

   sipStatsRetryExtMethodName OBJECT-TYPE

   Lingle/Maeng/Mule/Walker                                         49
       SYNTAX      Integer32 (60000..300000)

Lingle/Maeng/Walker                                                 41
       UNITS       "milliseconds"      SnmpAdminString
       MAX-ACCESS  read-write  read-create
       STATUS      current
       DESCRIPTION
            "This object specifies contains the time a user agent will wait to
             receive a final response to name of the particular extension
             method the SIP entity supports.
             For example, it may contain the string 'REFER' if the
             REFER method is supported.
             It is an INVITE before canceling error for any of the
             transaction." methods contained
             in RFC 2543 to be requested."
       ::= { sipUACfgTimerEntry sipCommonStatsRetryExtMethodEntry 2 }

   sipUACfgTimerAck

   sipStatsRetryExtMethodRetries OBJECT-TYPE
       SYNTAX      Integer32 (100..1000)
       UNITS       "milliseconds"      Counter32
       MAX-ACCESS  read-write  read-only
       STATUS      current
       DESCRIPTION
            "This object specifies reflects the time a user agent will wait to
             receive an ACK confirmation indicating that total number of retries
             sent by the SIP entity for a session is
             established." given extension method."
       ::= { sipUACfgTimerEntry sipCommonStatsRetryExtMethodEntry 3 }

   sipUACfgTimerDisconnect

   sipStatsRetryExtMethodStatus OBJECT-TYPE
       SYNTAX      Integer32 (100..1000)
       UNITS       "milliseconds"      RowStatus
       MAX-ACCESS  read-write  read-create
       STATUS      current
       DESCRIPTION
            "This object specifies
            "The row status of the time a user agent will wait entry. This object is required
             to
             receive create or delete rows remotely by a BYE confirmation indicating manager.
             A value for sipStatsRetryExtMethodName must be set
             for row creation to be successful.  If that method
             already exists for a session is
             disconnected."
       ::= { sipUACfgTimerEntry 4 }

   sipUACfgTimerReRegister OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       UNITS       "seconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies how long particular applIndex, the user agent wishes its
             registrations to be valid." row
             create operation will fail."
       ::= { sipUACfgTimerEntry 5 sipCommonStatsRetryExtMethodEntry 4 }

   --
   -- SIP Retry Configuration
   --
   sipUACfgRetryTable
   -- Other Common Statistics
   --
   sipOtherStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipUACfgRetryEntry SipOtherStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains retry configuration objects applicable
             to other common statistics supported by
             each SIP user agent entity in this system. The instances of SIP
             entities are uniquely identified by applIndex."
       ::= { sipUACfgRetry 1 sipCommonStats 6 }

Lingle/Maeng/Walker                                                 42
   sipUACfgRetryEntry

   sipOtherStatsEntry OBJECT-TYPE
       SYNTAX     SipUACfgRetryEntry     SipOtherStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of retry configuration."
            "Information on a particular SIP entities' other common
             statistics."
       INDEX { applIndex }
       ::= { sipUACfgRetryTable sipOtherStatsTable 1 }

   SipUACfgRetryEntry

   Lingle/Maeng/Mule/Walker                                         50
   SipOtherStatsEntry ::=
       SEQUENCE {
                sipUACfgRetryInvite       Integer32,
                sipUACfgRetryBye          Integer32,
                sipUACfgRetryCancel       Integer32,
                sipUACfgRetryRegister     Integer32,
                sipUACfgRetryResponse     Integer32
       }

   sipUACfgRetryInvite OBJECT-TYPE
       SYNTAX      Integer32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a user agent
             will retry sending an INVITE request."
       ::= { sipUACfgRetryEntry 1 }

   sipUACfgRetryBye OBJECT-TYPE
       SYNTAX      Integer32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a user agent
             will retry sending a BYE request."
       ::= { sipUACfgRetryEntry 2 }

   sipUACfgRetryCancel OBJECT-TYPE
       SYNTAX      Integer32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a user agent
             will retry sending a CANCEL request."
       ::= { sipUACfgRetryEntry 3 }

   sipUACfgRetryRegister OBJECT-TYPE
       SYNTAX      Integer32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a user agent
             will retry sending a REGISTER request."
       ::= { sipUACfgRetryEntry 4
                sipNumUnsupportedUris  Counter32
       }

Lingle/Maeng/Walker                                                 43
   sipUACfgRetryResponse

   sipNumUnsupportedUris OBJECT-TYPE
       SYNTAX      Integer32 (1..10)     Counter32
       MAX-ACCESS  read-write read-only
       STATUS     current
       DESCRIPTION
            "This object will specify the number
            "Number of times a user agent
             will retry sending RequestURIs received with unsupported scheme.
             A server normally responds to such requests with a Response and expecting an ACK." 400 Bad
             Request status code."
       ::= { sipUACfgRetryEntry sipOtherStatsEntry 5 }

   --
   -- User Agent Statistics
   --

   --
   -- SIP Retry Statistics
   --
   -- The counter objects in this group correspond directly to the
   -- retry timers supported in sipCfgRetry group.  applIndex can
   -- be used to correlate the two groups.
   -- Notifications
   --
   sipUAStatsRetryTable
   sipCommonMIBNotifPrefix    OBJECT IDENTIFIER ::= { sipCommonMIB 7 }
   sipCommonMIBNotif          OBJECT IDENTIFIER ::= {
   sipCommonMIBNotifPrefix 0 }

   sipNotifApplIndex    OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipUAStatsRetryEntry     INTEGER (1..2147483647)
       MAX-ACCESS not-accessible accessible-for-notify
       STATUS     current
       DESCRIPTION
            "This table object contains retry statistics objects applicable
             to each SIP user agent the applIndex as described
            in RFC 2788. It is used to bind this system.  The instances notification
            with a specific instance of SIP entities are uniquely identified by applIndex." entity."
       ::= { sipUAStatsRetry sipCommonMIBNotif 1 }

   sipUAStatsRetryEntry OBJECT-TYPE
       SYNTAX     SipUAStatsRetryEntry
       MAX-ACCESS not-accessible

   sipStatusCodeNotif         NOTIFICATION-TYPE
       OBJECTS {
               sipNotifApplIndex,
               sipStatusCodeNotifTo,
               sipStatusCodeNotifFrom,
               sipStatusCodeNotifCallId,
               sipStatusCodeNotifCSeq
       }
       STATUS  current
       DESCRIPTION
            "A row
            "Signifies that a specific status code has been sent
             or received by the system."
       ::= { sipCommonMIBNotif 2 }

   sipStatusCodeThreshExceededNotif NOTIFICATION-TYPE
       OBJECTS {
               sipNotifApplIndex,
               sipCommonStatusCodeIns,
               sipCommonStatusCodeOuts
       }
       STATUS  current
       DESCRIPTION
            "Signifies that a specific status code was found to
             have been sent or received by the system enough to
             exceed the configured threshold.  This notification

   Lingle/Maeng/Mule/Walker                                         51
             can be used as an early warning mechanism in lieu
             of retry statistics."
       INDEX using sipStatusCodeNotif."
       ::= { applIndex sipCommonMIBNotif 3 }

   --
   -- Conformance
   --
   sipCommonMIBConformance
     OBJECT IDENTIFIER ::= { sipCommonMIB 6 }
   sipCommonMIBCompliances
     OBJECT IDENTIFIER ::= { sipUAStatsRetryTable sipCommonMIBConformance 1 }

   SipUAStatsRetryEntry
   sipCommonMIBGroups
     OBJECT IDENTIFIER ::=
       SEQUENCE {
                sipStatsRetryInvites        Counter32,
                sipStatsRetryByes           Counter32,
                sipStatsRetryCancels        Counter32,
                sipStatsRetryRegisters      Counter32,
                sipStatsRetryResponses      Counter32 sipCommonMIBConformance 2 }

   sipStatsRetryInvites OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only

Lingle/Maeng/Walker                                                 44

   --
   -- Compliance Statements
   --
   sipCommonCompliance MODULE-COMPLIANCE
       STATUS     current
       DESCRIPTION
            "The compliance statement for SIP entities."

       MODULE -- this module
            MANDATORY-GROUPS { sipCommonConfigGroup,
                               sipCommonStatsGroup }

       GROUP sipCommonConfigTimerGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any timer configuration."

       GROUP sipCommonConfigTimerExtMethodGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any extension method timer configuration.
             If implemented, the sipCommonConfigTimerGroup must also
             be implemented because of a dependency on sipCfgTimerT2."

       GROUP sipCommonConfigRetryGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any retry configuration."

       GROUP sipCommonConfigRetryExtMethodGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any extension method retry configuration."

       GROUP sipCommonStatsRetryGroup
       DESCRIPTION
            "This object reflects group is optional.  A SIP entity can elect to
             not provide any retry statistics.  If implemented,
             the total number of INVITE retries
             that have been sent by sipCommonConfigRetryGroup  must also be implemented."

       GROUP sipCommonStatsRetryExtMethodsGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to

   Lingle/Maeng/Mule/Walker                                         52
             not provide any extension method retry statistics.
             If implemented, the user agent. sipCommonConfigRetryExtMethodGroup
             must also be implemented."

       GROUP sipCommonNotifGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any notifications.  If implemented, the number of
             'first attempt' INVITES
             sipCommonStatusCodeNotifGroup must also be implemented."

       GROUP sipCommonStatusCodeNotifGroup
       DESCRIPTION
            "This group is of interest, subtract optional.  A SIP entity can elect to
             not provide any notifications.  If implemented, the value
             of this object from sipStatsTrafficInviteOut."
             sipCommonNotifGroup must also be implemented."

       ::= { sipUAStatsRetryEntry sipCommonMIBCompliances 1 }

   sipStatsRetryByes OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number

   --
   -- Units of BYE retries that
             have been sent by the user agent."
       ::= Conformance
   --
   sipCommonConfigGroup OBJECT-GROUP
       OBJECTS { sipUAStatsRetryEntry 2
               sipProtocolVersion,
               sipServiceOperStatus,
               sipServiceAdminStatus,
               sipServiceStartTime,
               sipServiceLastChange,
               sipTransportRcv,
               sipTransportSnd,
               sipPortStatus,
               sipUriSupported,
               sipFtrSupported,
               sipOrganization,
               sipMaxSessions,
               sipInviteTimeout,
               sipRequestUriHostMatching
       }

   sipStatsRetryCancels OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS  current
       DESCRIPTION
            "This object reflects the total number
            "A collection of CANCEL retries
             that have been sent by the user agent." objects providing configuration common
             to all SIP enities."
       ::= { sipUAStatsRetryEntry 3 sipCommonMIBGroups 1 }

   sipStatsRetryRegisters OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of REGISTER retries
             that have been sent by the user agent."
       ::=

   sipCommonConfigTimerGroup OBJECT-GROUP
       OBJECTS { sipUAStatsRetryEntry 4
               sipCfgInitialTimerInvite,
               sipCfgTimerProv,
               sipCfgInitialTimerAck,
               sipCfgInitialTimerBye,
               sipCfgInitialTimerRegister,
               sipCfgInitialTimerOptions,
               sipCfgInitialTimerInfo,
               sipCfgInitialTimerResp,
               sipCfgTimerT2
       }

   sipStatsRetryResponses OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS  current
       DESCRIPTION
            "This object reflects the total number of Response (while
             expecting an ACK) retries that have been sent by the user
             agent."
       ::= { sipUAStatsRetryEntry 5 }

   --
   -- Notifications
   --
   sipUAMIBNotif            OBJECT IDENTIFIER

   Lingle/Maeng/Mule/Walker                                         53
       DESCRIPTION
            "A collection of objects providing timer configuration
             common to all SIP enities."
       ::= { sipUAMIB 3 sipCommonMIBGroups 2 }

   -- none at this time

Lingle/Maeng/Walker                                                 45
   --
   -- Conformance
   --
   sipUAMIBConformance
     OBJECT IDENTIFIER ::=

   sipCommonConfigTimerExtMethodGroup OBJECT-GROUP
       OBJECTS { sipUAMIB 4
               sipCfgTimerExtMethodName,
               sipCfgTimerExtMethodTimer,
               sipCfgTimerExtMethodStatus
       }
   sipUAMIBCompliances
     OBJECT IDENTIFIER
       STATUS  current
       DESCRIPTION
            "A collection of objects providing extension method timer
             configuration."
       ::= { sipUAMIBConformance 1 sipCommonMIBGroups 3 }
   sipUAMIBGroups
     OBJECT IDENTIFIER ::=

   sipCommonConfigRetryGroup OBJECT-GROUP
       OBJECTS { sipUAMIBConformance 2
               sipCfgRetryInvite,
               sipCfgRetryBye,
               sipCfgRetryCancel,
               sipCfgRetryRegister,
               sipCfgRetryResponse,
               sipCfgRetryOptions,
               sipCfgRetryInfo
       }

   --
   -- Compliance Statements
   --
   sipUACompliance MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
            "The compliance statement for
            "A collection of objects providing retry configuration
             common to all SIP entities."

       MODULE -- this module
            MANDATORY-GROUPS enities."
       ::= { sipUAConfigGroup,
                               sipUAStatsGroup sipCommonMIBGroups 4 }
   --                            sipUANotifGroup

   sipCommonConfigRetryExtMethodGroup OBJECT-GROUP
       OBJECTS {
               sipCfgRetryExtMethodName,
               sipCfgRetryExtMethodRetry,
               sipCfgRetryExtMethodStatus
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing extension method retry
             configuration."
       ::= { sipUAMIBCompliances 1 sipCommonMIBGroups 5 }

   --
   -- Units of Conformance
   --

   sipUAConfigGroup

   sipCommonStatsGroup OBJECT-GROUP
       OBJECTS {
               sipUACfgTimerTrying,
               sipUACfgTimerProv,
               sipUACfgTimerAck,
               sipUACfgTimerDisconnect,
               sipUACfgTimerReRegister,
               sipUACfgRetryInvite,
               sipUACfgRetryBye,
               sipUACfgRetryCancel,
               sipUACfgRetryRegister,
               sipUACfgRetryResponse
               sipSummaryInRequests,
               sipSummaryOutRequests,
               sipSummaryInResponses,
               sipSummaryOutResponses,
               sipSummaryTotalTransactions,
               sipStatsInviteIns,
               sipStatsInviteOuts,
               sipStatsAckIns,
               sipStatsAckOuts,
               sipStatsByeIns,

   Lingle/Maeng/Mule/Walker                                         54
               sipStatsByeOuts,
               sipStatsCancelIns,
               sipStatsCancelOuts,
               sipStatsOptionsIns,
               sipStatsOptionsOuts,
               sipStatsRegisterIns,
               sipStatsRegisterOuts,
               sipStatsInfoIns,
               sipStatsInfoOuts,
               sipStatsExtMethodName,
               sipStatsExtMethodIns,
               sipStatsExtMethodOuts,
               sipStatsExtMethodStatus,
               sipStatsInfoClassIns,
               sipStatsInfoClassOuts,
               sipStatsSuccessClassIns,
               sipStatsSuccessClassOuts,
               sipStatsRedirClassIns,
               sipStatsRedirClassOuts,
               sipStatsReqFailClassIns,
               sipStatsReqFailClassOuts,
               sipStatsServerFailClassIns,
               sipStatsServerFailClassOuts,
               sipStatsGlobalFailClassIns,
               sipStatsGlobalFailClassOuts,
               sipCommonStatusCodeIns,
               sipCommonStatusCodeOuts,
               sipCommonStatusCodeStatus,
               sipCurrentTransactions,
               sipTransTo,
               sipTransFrom,
               sipTransCallId,
               sipTransCSeq,
               sipTransState,
               sipTransNumOutstandingBranches,
               sipTransExpiry,
               sipTransCallingPartyContentType,
               sipTransCalledPartyContentType,
               sipNumUnsupportedUris
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing configuration for statistics common
             toall SIP User Agents." entities."
       ::= { sipUAMIBGroups 1 sipCommonMIBGroups 6 }

   sipUAStatsGroup

   sipCommonStatsRetryGroup OBJECT-GROUP
       OBJECTS {
                sipStatsRetryInvites,
                sipStatsRetryByes,
                sipStatsRetryCancels,

Lingle/Maeng/Walker                                                 46
                sipStatsRetryRegisters,
               sipStatsRetryResponses
                sipStatsRetryResponses,
                sipStatsRetryOptions,
                sipStatsRetryInfo
       }
       STATUS  current

   Lingle/Maeng/Mule/Walker                                         55
       DESCRIPTION
            "A collection of objects providing statistics for
             SIP User Agents." retry statistics."
       ::= { sipUAMIBGroups 2 sipCommonMIBGroups 7 }

   --sipUANotifGroup

   sipCommonStatsRetryExtMethodsGroup OBJECT-GROUP
       OBJECTS {
               sipStatsRetryExtMethodName,
               sipStatsRetryExtMethodRetries,
               sipStatsRetryExtMethodStatus
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing extension method retry
             statistics."
       ::= { sipCommonMIBGroups 8 }

   sipCommonNotifGroup NOTIFICATION-GROUP
   --
       NOTIFICATIONS {
               sipStatusCodeNotif,
               sipStatusCodeThreshExceededNotif
       }
       STATUS  current
       DESCRIPTION
            "A collection of notifications common to all SIP entities."
       ::= { sipCommonMIBGroups 9 }

   sipCommonStatusCodeNotifGroup OBJECT-GROUP
       OBJECTS {
   -- none at this time
   --
               sipCommonStatusCodeNotifSend,
               sipCommonStatusCodeNotifEmitMode,
               sipCommonStatusCodeNotifThresh,
               sipCommonStatusCodeNotifInterval,
               sipStatusCodeNotifTo,
               sipStatusCodeNotifFrom,
               sipStatusCodeNotifCallId,
               sipStatusCodeNotifCSeq
      }
   --
       STATUS  current
   --
       DESCRIPTION
   --
            "A collection of objects related to controlling and attribution
             of notifications defined for common to all SIP User
   --          Agents."
   -- entities."
       ::= { sipMIBGroups 3 sipCommonMIBGroups 10 }

   END

5.5.

5.4. SIP Redirect & Proxy Server

   SIP-SERVER-MIB User Agent

   SIP-UA-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        Counter32,
        Integer32,
        Unsigned32
        Integer32
             FROM SNMPv2-SMI

        RowStatus,
        TruthValue
             FROM SNMPv2-TC

   Lingle/Maeng/Mule/Walker                                         56
        MODULE-COMPLIANCE,
        OBJECT-GROUP
        OBJECT-GROUP,
        NOTIFICATION-GROUP
             FROM SNMPv2-CONF

        SnmpAdminString
             FROM SNMP-FRAMEWORK-MIB

        SipServerActions

        RowStatus
             FROM SIP-TC SNMPv2-TC

        sipMIB
             FROM SIP-MIB-SMI

        applIndex
             FROM NETWORK-SERVICES-MIB;

Lingle/Maeng/Walker                                                 47
   sipServerMIB NETWORK-SERVICES-MIB

        InetAddressType,
        InetAddress
             FROM INET-ADDRESS-MIB;

   sipUAMIB MODULE-IDENTITY
        LAST-UPDATED   "200007080000Z"   "200102230000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB Team email: sip-mib@egroups.com sip-mib@yahoogroups.com

                 Co-editor  Kevin Lingle
                            Cisco Systems, Inc.
                 postal:    7025 Kit Creek Road
                            P.O. Box 14987
                            Research Triangle Park, NC 27709
                            USA
                 email:     klingle@cisco.com
                 phone:     +1-919-392-2029     +1 919 392 2029

                 Co-editor  Joon Maeng
                            VTEL Corporation
                 postal:    108 Wild Basin Rd.
                            Austin, TX 78746
                            USA
                 email:     joon_maeng@vtel.com
                 phone:     +1-512-437-4567     +1 512 437 4567

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    80 Hines    495 March Road
                            Kanata, ON K2K 2T8 3G1
                            Canada
                 email:     drwalker@ss8networks.com     drwalker@ss8.com
                 phone:     +1 613 592 2100" 2100

                 Co-editor  Jean-Francois Mule
                            Clarent Corporation
                            700 Chesapeake Drive
                            Redwood City, CA 94063
                 email:     jfm@clarent.com
                 phone:     +1 650 481 2835"
        DESCRIPTION

   Lingle/Maeng/Mule/Walker                                         57
                "Initial version of Session Initiation Protocol (SIP)
                 Server
                 User Agent (UA) MIB module.

                 SIP is an application-layer signalling protocol for
                 creating, modifying and terminating multimedia
                 sessions with one or more participants. These sessions
                 include Internet multimedia conferences and Internet
                 telephone calls.  SIP is defined in RFC 2543 (March
                 1999).

                 This MIB is defined for the management of SIP Proxy
                 and Redirect Servers.

                 A Proxy Server acts as User Agent is an application that contains both a client
                 User Agent Client (UAC) and a server.
                 It accepts requests from other clients, either
                 responding to them or passing them on to other
                 servers, possibly after modification.

                 A Redirect User Agent Server accepts requests from clients and
                 returns zero or more addresses to (UAS).
                 A UAC is an application that client. Unlike initiates a Proxy server it does not initiate requests.  Unlike SIP request.
                 A UAS is an application that contacts the user when a User Agent Server it does not accept calls."

Lingle/Maeng/Walker                                                 48
                 SIP request is received and that returns a response on
                 behalf of the user.  The response accepts, rejects, or
                 redirects the request."
        ::= { sipMIB 4 3 }

   --
   -- sipServer sipUA group
   -- This group contains MIB objects common related to Proxy and Redirect
   -- Servers. SIP User Agents.
   --
   sipServerCfg
   sipUACfg                    OBJECT IDENTIFIER ::= { sipServerMIB sipUAMIB 1 }
   sipServerStats
   sipUACfgSipServer           OBJECT IDENTIFIER ::= { sipServerMIB sipUACfg 1 }
   sipUAStats                  OBJECT IDENTIFIER ::= { sipUAMIB 2 }

   --
   -- Common User Agent Configuration
   --

   --
   -- SIP Server Configuration Objects
   --
   sipServerCfgTable
   sipUACfgSipServerTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipServerCfgEntry SipUACfgSipServerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains SIP server configuration objects
             applicable to each SIP redirect and proxy servers.  Each row represents
             those objects for a particular SIP server present user agent in this system.  The
             instances of SIP servers entities are uniquely identified
             by applIndex."
       ::= { sipServerCfg sipUACfgSipServer 1 }

   sipServerCfgEntry

   sipUACfgSipServerEntry OBJECT-TYPE
       SYNTAX     SipServerCfgEntry     SipUACfgSipServerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of common server configuration."
       INDEX { applIndex applIndex, sipUACfgSipServerIndex }
       ::= { sipServerCfgTable sipUACfgSipServerTable 1 }

   SipServerCfgEntry

   SipUACfgSipServerEntry ::=

   Lingle/Maeng/Mule/Walker                                         58
       SEQUENCE {
                sipServerHost                   SnmpAdminString,
                sipInformationAlwaysSendTrying  TruthValue,
                sipInformationTryingInterval    Integer32,
                sipPgpVersion                   SnmpAdminString,
                sipServerDfltAction             SipServerActions,
                sipServerRespectUAAction        TruthValue
                sipUACfgSipServerAddrIndex   Unsigned32,
                sipUACfgSipServerAddrType    InetAddressType,
                sipUACfgSipServerAddr        InetAddress,
                sipUACfgSipServerAddrStatus  RowStatus
       }

   sipServerHost

   sipUACfgSipServerAddrIndex OBJECT-TYPE
       SYNTAX     SnmpAdminString     Unsigned32
       MAX-ACCESS read-write not-accessible
       STATUS     current
       DESCRIPTION
            "This is the host portion
            "A unique identifier of a SIP URL that is assigned
             to server address when
             multiple addresses are configured by the SIP server.  It may contain a fully qualified
             domain name, or an IP entity.
             If one address (v4 only for now)."
       REFERENCE

Lingle/Maeng/Walker                                                 49
             "RFC 2543, Section 2" isn't reachable, then another can
             be tried."
       ::= { sipServerCfgEntry sipUACfgSipServerEntry 1 }

   --
   -- Support for 1xx Status Codes
   --
   sipInformationAlwaysSendTrying

   sipUACfgSipServerAddrType OBJECT-TYPE
       SYNTAX     TruthValue     InetAddressType
       MAX-ACCESS read-write read-create
       STATUS     current
       DESCRIPTION
            "If this
            "This object is true, specifies the server sends 100 Trying when a
             request is processed."
       ::= { sipServerCfgEntry 2 }

   sipInformationTryingInterval OBJECT-TYPE
       SYNTAX     Integer32 (0..60000)
       UNITS      "milliseconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "Server sends a 100 Trying at intervals type of this duration
             as counted from when the request was processed.  If address contained
             in the
             value is zero, no such retransmission is performed."
       ::= associated instance of sipUACfgSipServerAddr."
       REFERENCE "INET-ADDRESS-MIB (RFC 2851)"
       DEFVAL { sipServerCfgEntry 3 ipv4 }

   --
   -- Security
   --
   sipPgpVersion OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object indicates the version of PGP (Pretty Good
             Privacy) supported by this server.  Common values are
             2.6.2 and 5.0."
       ::= { sipServerCfgEntry 4 sipUACfgSipServerEntry 2 }

   --
   -- Additional Server Configuration
   --
   sipServerDfltAction

   sipUACfgSipServerAddr OBJECT-TYPE
       SYNTAX     SipServerActions     InetAddress
       MAX-ACCESS read-write read-create
       STATUS     current
       DESCRIPTION
            "This object specifies whether the default action address of the
             server is to be a proxy SIP server or a redirect server.  A
             User Agent may indicate a preference upon registration of
             Contact information. The value of
             this object is used in
             the absence of such an indication."
       REFERENCE
             "RFC 2543,  Section 6.13"

Lingle/Maeng/Walker                                                 50 user agent will use to proxy/redirect calls."
       ::= { sipServerCfgEntry 5 sipUACfgSipServerEntry 3 }

   sipServerRespectUAAction

   sipUACfgSipServerAddrStatus OBJECT-TYPE
       SYNTAX     TruthValue     RowStatus
       MAX-ACCESS read-write read-create
       STATUS     current
       DESCRIPTION
            "This object specifies whether the server should respect is used to control rows in this table.

             'active'        : the wishes of a User Agent when row's information is completely
                               populated and that information is
                               being used by the UA specifies a server
             action (proxy or redirect) for certain Contact
             information.  If user agent.

             'notInService'  : the value of this object row's address is false, then not being used
                               by the value contained user agent, but will remain in the sipServerDfltAction table.

             'notReady'      : key information is used."
       REFERENCE
             "RFC 2543, Section 6.13" missing thus, preventing
                               the row from being made 'active' (eg, no
                               address specified).

             'createAndGo'   : only allowed if the manager also provides

   Lingle/Maeng/Mule/Walker                                         59
                               a varbind for sipUACfgSipServerAddr object
                               in the same set operation.

             'createAndWait' : not applicable.

             'destroy'       : the row's address will no longer be used
                               by the user agent and the row will be
                               removed from the table."
       ::= { sipServerCfgEntry 6 sipUACfgSipServerEntry 4 }

   --
   -- Common Server User Agent Statistics
   --

   -- none at this time

   -- sipProxy group
   -- This group contains MIB objects related to SIP Proxy Servers. Notifications
   --
   sipProxy
   sipUAMIBNotif            OBJECT IDENTIFIER ::= { sipServerMIB sipUAMIB 3 }
   sipProxyCfg

   -- none at this time

   --
   -- Conformance
   --
   sipUAMIBConformance
     OBJECT IDENTIFIER ::= { sipProxy sipUAMIB 4 }
   sipUAMIBCompliances
     OBJECT IDENTIFIER ::= { sipUAMIBConformance 1 }
   sipProxyStats
   sipUAMIBGroups
     OBJECT IDENTIFIER ::= { sipProxy sipUAMIBConformance 2 }

   --
   -- Proxy Server Configuration Compliance Statements
   --
   sipProxyCfgTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipProxyCfgEntry
       MAX-ACCESS not-accessible
   sipUACompliance MODULE-COMPLIANCE
       STATUS     current
       DESCRIPTION
            "This table contains configuration objects applicable
             to SIP proxy servers.  Each row represents those objects
            "The compliance statement for a particular SIP proxy server present in entities."

       MODULE -- this system.
             The instances of SIP proxy servers are uniquely identified
             by applIndex." module
            MANDATORY-GROUPS { sipUAConfigGroup }
   --                            sipUANotifGroup }
       ::= { sipProxyCfg sipUAMIBCompliances 1 }

   sipProxyCfgEntry OBJECT-TYPE
       SYNTAX     SipProxyCfgEntry
       MAX-ACCESS not-accessible

   --
   -- Units of Conformance
   --

   sipUAConfigGroup OBJECT-GROUP
       OBJECTS {
               sipUACfgSipServerAddrIndex,

   Lingle/Maeng/Mule/Walker                                         60
               sipUACfgSipServerAddrType,
               sipUACfgSipServerAddr,
               sipUACfgSipServerStatus
       }
       STATUS  current
       DESCRIPTION
            "A row collection of common configuration."
       INDEX { applIndex }

Lingle/Maeng/Walker                                                 51 objects providing configuration for
             SIP User Agents."
       ::= { sipProxyCfgTable sipUAMIBGroups 1 }

   SipProxyCfgEntry ::=
       SEQUENCE

   --sipUANotifGroup NOTIFICATION-GROUP
   --    OBJECTS {
                sipRequestMaxExpires         Unsigned32,
                sipProxyStateful             TruthValue,
                sipProxySendsCancel          TruthValue,
                sipProxyForwardAll1xx        TruthValue,
                sipProxyRecursion            TruthValue,
                sipProxyProvideAlternatives  TruthValue,
                sipProxyRecordRoute          TruthValue,
                sipProxyStateTimeout         Integer32,
                sipProxyAuthMethod           INTEGER,
                sipProxyAuthPgpAlgorithm     INTEGER,
                sipProxyAuthRealm            SnmpAdminString,
                sipProxyNonceLifeTime        Integer32,
                sipPgpPrivateKey             OCTET
   STRING(SIZE(0..255)),
                sipHideRespect               TruthValue
   -- none at this time
   --    }

   sipRequestMaxExpires OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       UNITS      "seconds"
       MAX-ACCESS read-write
   --    STATUS  current
   --    DESCRIPTION
            "This object specifies the maximum duration that a
   --         "A collection of notifications defined for SIP
             proxy server will accept from a client in the Expires
             header.

             If a longer duration is contained in the request, the
             server returns a 400 Bad Request response." User
   --          Agents."
   --    ::= { sipProxyCfgEntry 1 sipMIBGroups 2 }

   sipProxyStateful OBJECT-TYPE
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether or not the default

   END

5.5. SIP Server (Registrar, Redirect & Proxy Server)

   SIP-SERVER-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        Counter32,
        Integer32,
        Unsigned32
             FROM SNMPv2-SMI

        RowStatus,
        TruthValue,
        TimeStamp, DateAndTime
             FROM SNMPv2-TC

        MODULE-COMPLIANCE,
        OBJECT-GROUP
             FROM SNMPv2-CONF

        SnmpAdminString
             FROM SNMP-FRAMEWORK-MIB

        sipMIB
             FROM SIP-MIB-SMI

        applIndex
             FROM NETWORK-SERVICES-MIB;

   sipServerMIB MODULE-IDENTITY
        LAST-UPDATED   "200102280000Z"

   Lingle/Maeng/Mule/Walker                                         61
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB Team email: sip-mib@yahoogroups.com

                 Co-editor  Kevin Lingle
                            Cisco Systems, Inc.
                 postal:    7025 Kit Creek Road
                            P.O. Box 14987
                            Research Triangle Park, NC 27709
                            USA
                 email:     klingle@cisco.com
                 phone:     +1 919 392 2029

                 Co-editor  Joon Maeng
                            VTEL Corporation
                 postal:    108 Wild Basin Rd.
                            Austin, TX 78746
                            USA
                 email:     joon_maeng@vtel.com
                 phone:     +1 512 437 4567

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    495 March Road
                            Kanata, ON K2K 3G1
                            Canada
                 email:     drwalker@ss8.com
                 phone:     +1 613 592 2100

                 Co-editor  Jean-Francois Mule
                            Clarent Corporation
                            700 Chesapeake Drive
                            Redwood City, CA 94063
                 email:     jfm@clarent.com
                 phone:     +1 650 481 2835"
        DESCRIPTION
                "Initial version of Session Initiation Protocol (SIP)
                 Server MIB module.

                 SIP is an application-layer signalling protocol for
             the the proxy server
                 creating, modifying and terminating multimedia
                 sessions with one or more participants. These sessions
                 include Internet multimedia conferences and Internet
                 telephone calls.  SIP is to operate defined in stateful mode.

             When stateful, a proxy remembers the incoming request
             which generated outgoing requests, and the outgoing
             requests. A stateless proxy forgets all information
             once an outgoing request RFC 2543 (March
                 1999).

                 This MIB is generated.

             If defined for the value management of this object is TRUE, the proxy defaults
             to stateful.  If FALSE, the proxy defaults SIP Proxy,
                 Redirect, and Registrar Servers.

                 A Proxy Server acts as both a client and a server.
                 It accepts requests from other clients, either
                 responding to stateless."
       REFERENCE
             "RFC 2543, Section 12.3"
       ::= { sipProxyCfgEntry 2 }

Lingle/Maeng/Walker                                                 52
   sipProxySendsCancel OBJECT-TYPE
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether them or not a forking proxy sends
             CANCEL passing them on outstanding branch requests to other
                 servers, possibly after receiving a
             2xx or 6xx, modification.

                 A Redirect Server accepts requests from clients and
                 returns zero or after the request times-out.

             If the value of this object is TRUE, the server sends more addresses to that client. Unlike
                 a
             CANCELs on branches where no definitive response has been
             received.  If FALSE, the proxy Proxy server it does not send CANCELs."
       REFERENCE
             "RFC 2543, Section 12.4"
       ::= { sipProxyCfgEntry 3 }

   sipProxyForwardAll1xx OBJECT-TYPE
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether or initiate requests.  Unlike

   Lingle/Maeng/Mule/Walker                                         62
                 a User Agent Server it does not the proxy forwards
             all 1xx responses, except the 100 Trying response,
             upstream towards the source of the request.

             If the value of this object accept calls.

                 A Registrar is TRUE, the 1xx responses are
             sent.  If the value a server that accepts REGISTER
                 requests.  A Registrar is FALSE, duplicate 1xx responses are
             not sent upstream." typically co-located with a
                 Proxy or Redirect Server."
        ::= { sipProxyCfgEntry sipMIB 4 }

   sipProxyRecursion OBJECT-TYPE
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether or not the

   --
   -- sipServer group
   -- This group contains MIB objects common to Proxy performs
             recursive search on the Contacts provided in 3xx
             redirects.

             If the value of this object is TRUE, a recursive search is
             performed.  If the value is FALSE, no search is performed,
             the 3xx response is sent upstream towards the source of
             the request." and Redirect
   -- Servers.
   --
   sipServerCfg                OBJECT IDENTIFIER ::= { sipProxyCfgEntry 5 sipServerMIB 1 }

   sipProxyProvideAlternatives
   sipServerStats              OBJECT IDENTIFIER ::= { sipServerMIB 2 }

   --
   -- Common Server Configuration Objects
   --
   sipServerCfgTable OBJECT-TYPE
       SYNTAX     TruthValue     SEQUENCE OF SipServerCfgEntry
       MAX-ACCESS read-write not-accessible
       STATUS     current
       DESCRIPTION
            "The object specifies whether or not the Server provides
             alternative Contacts in 3xx and 485 responses.

             If the value of this object is TRUE, the server inserts a

Lingle/Maeng/Walker                                                 53
             list of alternative URLs into a Contact header where the
             request Originator may possibly find the desired called
             party.  If the value is FALSE, the server doesn't add
             Contact information
            "This table contains configuration objects applicable
             to 3xx SIP redirect and 485 responses.

             Note that the policies of a server may limit the proxy servers.  Each row represents
             those objects for a particular alternatives that are returned when SIP server present in
             this object
             is TRUE."
       REFERENCE
             "RFC 2543, Section 6.13"
       DEFVAL { false } system. The instances of SIP servers are uniquely
             identified by applIndex."
       ::= { sipProxyCfgEntry 6 sipServerCfg 1 }

   sipProxyRecordRoute

   sipServerCfgEntry OBJECT-TYPE
       SYNTAX     TruthValue     SipServerCfgEntry
       MAX-ACCESS read-write not-accessible
       STATUS     current
       DESCRIPTION
            "This object specifies whether or not the proxy adds itself
             to the Record-Route header as a default action.  This
             header is used to list the proxies that insist on being in
             the signalling path for subsequent requests related to the
             call-leg.

             If the value of this object is TRUE, the proxy adds itself
             to the end
            "A row of the Record-Route header, creating the header
             if required.  If the value is FALSE, the proxy doesn't add
             itself to the Record-Route header."
       REFERENCE
             "RFC 2543, Section 6.29" common configuration."
       INDEX { applIndex }
       ::= { sipProxyCfgEntry 7 sipServerCfgTable 1 }

   sipProxyStateTimeout

   SipServerCfgEntry ::=
       SEQUENCE {
                sipServerHost                   SnmpAdminString,
                sipInformationTryingInterval    Integer32,
                sipPgpVersion                   SnmpAdminString,
                sipServerContactDfltAction      INTEGER,
                sipServerRespectUAAction        TruthValue
       }

   sipServerHost OBJECT-TYPE
       SYNTAX     Integer32 (0..255)
       UNITS      "seconds"     SnmpAdminString
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies is the duration after reception host portion of the
             first definitive non-200 response that a stateful proxy
             retains state in order SIP URL that is assigned
             to handle possible retransmissions
             of the response." SIP server.  It may contain a fully qualified
             domain name, or an IP address (v4 only for now)."

   Lingle/Maeng/Mule/Walker                                         63
       REFERENCE
             "RFC 2543, Section 12.3.6" 2"
       ::= { sipProxyCfgEntry 8 sipServerCfgEntry 1 }

   --
   -- Security Support for 1xx Status Codes
   --
   sipProxyAuthMethod
   sipInformationTryingInterval OBJECT-TYPE
       SYNTAX     INTEGER {
                          none(1),
                          basic(2),
                          digest(3),

Lingle/Maeng/Walker                                                 54
                          pgp(4)
                  }     Integer32 (0..60000)
       UNITS      "milliseconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies the authentication method that is
             used to authenticate
            "Server sends a 100 Trying at intervals of this duration
             as counted from when the request originators. was processed.  If the
             value is
             none(1), zero, no authentication such retransmission is performed."
       ::= { sipProxyCfgEntry 9 sipServerCfgEntry 2 }

   sipProxyAuthPgpAlgorithm

   --
   -- Security
   --
   sipPgpVersion OBJECT-TYPE
       SYNTAX     INTEGER {
                          other(1),
                          md5(2),
                          sha1(3)

                  }     SnmpAdminString
       MAX-ACCESS read-write read-only
       STATUS     current
       DESCRIPTION
            "This object specifies indicates the version of PGP algorithm the proxy uses." (Pretty Good
             Privacy) supported by this server.  Common values are
             2.6.2 and 5.0."
       ::= { sipProxyCfgEntry 10 sipServerCfgEntry 3 }

   sipProxyAuthRealm

   --
   -- Additional Server Configuration
   --
   sipServerContactDfltAction OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies the realm used in Proxy-Authenticate
             headers.  Note that this may need to be stored per user."
       ::=     INTEGER { sipProxyCfgEntry 11
                          redirect(1),
                          proxy(2)
                  }

   sipProxyNonceLifeTime OBJECT-TYPE
       SYNTAX Integer32 (0..65535)
       UNITS "milliseconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether the life-time default contact action
             of the server is to be a given nonce. proxy or a redirect server.  A
             nonce is
             User Agent may indicate a server specified preference upon registration of
             Contact information. The value whose contents are
             opaque to the entity being authenticated and which of this object is used in calculating authentication data.  If this object has a
             value
             the absence of zero, then
             nonces are not reused." such an indication."
       REFERENCE
             "RFC 2543,  Section 6.13"
       ::= { sipProxyCfgEntry 12 sipServerCfgEntry 4 }

   --
   -- Proxy-Authenticate received by this server
   -- (i.e. this server is being authenticated by a peer)
   --
   sipPgpPrivateKey

   sipServerRespectUAAction OBJECT-TYPE
       SYNTAX     OCTET STRING(SIZE(0..255))     TruthValue
       MAX-ACCESS read-write
       STATUS     current

Lingle/Maeng/Walker                                                 55
       DESCRIPTION
            "The
            "This object specifies whether the server should respect

   Lingle/Maeng/Mule/Walker                                         64
             the wishes of a User Agent when the UA specifies a server
             action (proxy or redirect) for certain Contact
             information.  If the value of this object is false, then
             the server's private PGP key,
             used for both PGP authentication of value contained in the sipServerDfltAction is used."
       REFERENCE
             "RFC 2543, Section 6.13"
       ::= { sipServerCfgEntry 5 }

   --
   -- Common Server Statistics
   --

   -- none at this server and for
             PGP-based
             encryption." time

   -- sipProxy group
   -- This group contains MIB objects related to SIP Proxy Servers.
   --
   sipProxy                    OBJECT IDENTIFIER ::= { sipProxyCfgEntry 13 sipServerMIB 3 }

   sipHideRespect OBJECT-TYPE
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether the server encrypts Via
             headers as requested by received Hide headers."
   sipProxyCfg                 OBJECT IDENTIFIER ::= { sipProxyCfgEntry 14 sipProxy 1 }

   sipRxProxyAuthTable
   sipProxyStats               OBJECT IDENTIFIER ::= { sipProxy 2 }

   --
   -- Proxy Server Configuration
   --
   sipProxyCfgTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipRxProxyAuthEntry SipProxyCfgEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains authentication data configuration objects applicable
             to SIP proxy servers.  Each row represents those objects
             for peers of each a particular SIP proxy server present in this system.
             The instances of SIP proxy
             server servers are uniquely identified
             by the applIndex."
       ::= { sipProxyCfg 2 1 }

   sipRxProxyAuthEntry

   sipProxyCfgEntry OBJECT-TYPE
       SYNTAX     SipRxProxyAuthEntry     SipProxyCfgEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This object contains authentication data for a single
             peer."
            "A row of common configuration."
       INDEX { applIndex, sipRxProxyAuthIndex applIndex }
       ::= { sipRxProxyAuthTable sipProxyCfgTable 1 }

   SipRxProxyAuthEntry

   SipProxyCfgEntry ::=
       SEQUENCE {
                sipRxProxyAuthIndex
                sipRequestMaxExpires         Unsigned32,
                sipRxProxyAuthRealm
                sipProxyStateful             TruthValue,
                sipProxySendsCancel          TruthValue,
                sipProxyForwardAll1xx        TruthValue,
                sipProxyRecursion            TruthValue,
                sipProxyProvideAlternatives  TruthValue,
                sipProxyRecordRoute          TruthValue,

   Lingle/Maeng/Mule/Walker                                         65
                sipProxyStateTimeout         Integer32,
                sipProxyAuthMethod           BITS,
                sipProxyAuthPgpAlgorithm     INTEGER,
                sipProxyAuthRealm            SnmpAdminString,
                sipRxProxyAuthPassword
                sipProxyNonceLifeTime        Integer32,
                sipPgpPrivateKey             OCTET STRING,
                sipRxProxyAuthStatus             RowStatus STRING
       }

   sipRxProxyAuthIndex

   sipRequestMaxExpires OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295) (0..4294967295)
       UNITS      "seconds"
       MAX-ACCESS not-accessible read-write
       STATUS     current
       DESCRIPTION
            "This object uniquely identifies specifies the maximum duration that a conceptual row SIP
             proxy server will accept from a client in the
             table." Expires
             header.

             If a longer duration is contained in the request, the
             server returns a 400 Bad Request response."
       ::= { sipRxProxyAuthEntry sipProxyCfgEntry 1 }

Lingle/Maeng/Walker                                                 56
   sipRxProxyAuthRealm

   sipProxyStateful OBJECT-TYPE
       SYNTAX     SnmpAdminString     TruthValue
       MAX-ACCESS read-create read-write
       STATUS     current
       DESCRIPTION
            "This object contains specifies whether or not the realm that is specified by
             another default for
             the the proxy server when it is authenticating to operate in stateful mode.

             When stateful, a proxy remembers the incoming request
             which generated outgoing requests, and the outgoing
             requests. A stateless proxy forgets all information
             once an outgoing request is generated.

             If the value of this server." object is TRUE, the proxy defaults
             to stateful.  If FALSE, the proxy defaults to stateless."
       REFERENCE
             "RFC 2543, Section 12.3"
       ::= { sipRxProxyAuthEntry sipProxyCfgEntry 2 }

   sipRxProxyAuthPassword

   sipProxySendsCancel OBJECT-TYPE
       SYNTAX     OCTET STRING(SIZE(1..4095))     TruthValue
       MAX-ACCESS read-create read-write
       STATUS     current
       DESCRIPTION
            "This object contains specifies whether or not a forking proxy sends
             CANCEL on outstanding branch requests after receiving a
             2xx or 6xx, or after the password that request times-out.

             If the value of this server uses
             when it object is being authenticated by another server using TRUE, the
             realm specified by server sends a
             CANCELs on branches where no definitive response has been
             received.  If FALSE, the sipRxProxyAuthRealm object in this
             table row." proxy does not send CANCELs."
       REFERENCE
             "RFC 2543, Section 12.4"
       ::= { sipRxProxyAuthEntry sipProxyCfgEntry 3 }

   sipRxProxyAuthStatus

   Lingle/Maeng/Mule/Walker                                         66
   sipProxyForwardAll1xx OBJECT-TYPE
       SYNTAX     RowStatus     TruthValue
       MAX-ACCESS read-create read-write
       STATUS     current
       DESCRIPTION
            "The row status of the entry. This
            "This object is required
             to create specifies whether or delete rows remotely by a manager."
       ::= { sipRxProxyAuthEntry 4 }

   --
   -- Proxy Server Statistics
   --
   sipProxyStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipProxyStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains not the statistics objects applicable
             to proxy forwards
             all SIP Proxy Servers in this system.

             Each row represents those objects for a particular
             SIP Proxy Server.  The instances 1xx responses, except the 100 Trying response,
             upstream towards the source of SIP Proxy Server the request.

             If the value of this object is TRUE, the 1xx responses are uniquely identified by applIndex."
             sent.  If the value is FALSE, duplicate 1xx responses are
             not sent upstream."
       ::= { sipProxyStats 1 sipProxyCfgEntry 4 }

   sipProxyStatsEntry

   sipProxyRecursion OBJECT-TYPE
       SYNTAX     SipProxyStatsEntry     TruthValue
       MAX-ACCESS not-accessible read-write
       STATUS     current
       DESCRIPTION
            "A row
            "This object specifies whether or not the Proxy performs
             recursive search on the Contacts provided in 3xx
             redirects.

             If the value of summary statistics."
       INDEX { applIndex }
       ::= { sipProxyStatsTable 1 }

Lingle/Maeng/Walker                                                 57
   SipProxyStatsEntry this object is TRUE, a recursive search is
             performed.  If the value is FALSE, no search is performed,
             the 3xx response is sent upstream towards the source of
             the request."
       ::=
       SEQUENCE {
                sipNumProxyRequireFailures Counter32 sipProxyCfgEntry 5 }

   sipNumProxyRequireFailures

   sipProxyProvideAlternatives OBJECT-TYPE
       SYNTAX     Counter32     TruthValue
       MAX-ACCESS read-only read-write
       STATUS     current
       DESCRIPTION
            "This
            "The object contains specifies whether or not the number Server provides
             alternative Contacts in 3xx and 485 responses.

             If the value of occurrences this object is TRUE, the server inserts a
             list of
             unsupported options being specified in received Proxy-
             Require headers.  Such occurrences result in alternative URLs into a 420 Bad
             Extension status code being
             returned."
       ::= { sipProxyStatsEntry 1 }

   --
   -- sipRedir group
   -- This group contains MIB objects related Contact header where the
             request Originator may possibly find the desired called
             party.  If the value is FALSE, the server doesn't add
             Contact information to SIP Redirect Servers.
   --
   sipRedir               OBJECT IDENTIFIER ::= { sipServerMIB 4 }
   sipRedirCfg            OBJECT IDENTIFIER ::= { sipRedir 1 }
   sipRedirStats          OBJECT IDENTIFIER ::= { sipRedir 2 }

   -- none at 3xx and 485 responses.

             Note that the policies of a server may limit the
             particular alternatives that are returned when this time

   --
   -- Notifications
   --
   sipServerMIBNotif      OBJECT IDENTIFIER ::= { sipServerMIB 5 }
   sipProxyNotif          OBJECT IDENTIFIER ::= { sipServerMIBNotif 1 }
   sipRedirNotif          OBJECT IDENTIFIER ::= object
             is TRUE."
       REFERENCE
             "RFC 2543, Section 6.13"
       DEFVAL { sipServerMIBNotif 2 false }

   -- none at this time

   --
   -- Conformance
   --
   sipServerMIBConformance
     OBJECT IDENTIFIER
       ::= { sipServerMIB sipProxyCfgEntry 6 }
   sipServerMIBCompliances
     OBJECT IDENTIFIER ::= { sipServerMIBConformance 1 }
   sipServerMIBGroups
     OBJECT IDENTIFIER ::= { sipServerMIBConformance 2 }

   --
   -- Compliance Statements
   --

Lingle/Maeng/Walker                                                 58
   sipCompliance MODULE-COMPLIANCE

   sipProxyRecordRoute OBJECT-TYPE
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "The compliance statement for SIP entities."

       MODULE -- this module
            MANDATORY-GROUPS { sipServerConfigGroup }
   --                            sipServerStatsGroup,
   --                            sipServerNotifGroup }

            GROUP sipProxyConfigGroup
            DESCRIPTION
            "This group object specifies whether or not the proxy adds itself

   Lingle/Maeng/Mule/Walker                                         67
             to the Record-Route header as a default action.  This
             header is mandatory used to list the proxies that insist on being in
             the signalling path for SIP Proxy servers."

            GROUP sipProxyStatsGroup
            DESCRIPTION
                  "This group subsequent requests related to the
             call-leg.

             If the value of this object is mandatory for SIP Proxy servers."

   --         GROUP sipProxyNotifGroup
   --         DESCRIPTION
   --               "This group TRUE, the proxy adds itself
             to the end of the Record-Route header, creating the header
             if required.  If the value is mandatory for SIP Proxy servers."

   --         GROUP sipRedirectConfigGroup
   -- FALSE, the proxy doesn't add
             itself to the Record-Route header."
       REFERENCE
             "RFC 2543, Section 6.29"
       ::= { sipProxyCfgEntry 7 }

   sipProxyStateTimeout OBJECT-TYPE
       SYNTAX     Integer32 (0..255)
       UNITS      "seconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
   --
            "This group is mandatory for SIP Redirect servers."

   --         GROUP sipRedirectStatsGroup
   --         DESCRIPTION object specifies the duration after reception of the
             first definitive non-200 response that a stateful proxy
             retains state in order to handle possible retransmissions
             of the response."
       REFERENCE
             "RFC 2543, Section 12.3.6"
       ::= { sipProxyCfgEntry 8 }

   --               "This group is mandatory for SIP Redirect servers."
   --         GROUP sipRedirectNotifGroup Security
   --
   sipProxyAuthMethod OBJECT-TYPE
       SYNTAX     BITS {
                          none(0),
                          basic(1),
                          digest(2),
                          pgp(3)
                  }
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
   --
            "This group object specifies the authentication method that is mandatory for SIP Redirect servers."
             used to authenticate request originators.

             bit 0  no authentication is performed
             bit 1  HTTP basic is used
             bit 2  HTTP digest is used
             bit 3  PGP (Pretty Good Privacy) is used."
       ::= { sipServerMIBCompliances 1 sipProxyCfgEntry 9 }

   --
   -- Units of Conformance
   --

   sipServerConfigGroup OBJECT-GROUP
       OBJECTS

   sipProxyAuthPgpAlgorithm OBJECT-TYPE
       SYNTAX     INTEGER {
               sipServerHost,
               sipInformationAlwaysSendTrying,
               sipInformationTryingInterval,
               sipPgpVersion,
               sipServerDfltAction,
               sipServerRespectUAAction
                          other(1),
                          md5(2),
                          sha1(3)

                  }
       MAX-ACCESS read-write

   Lingle/Maeng/Mule/Walker                                         68
       STATUS     current
       DESCRIPTION
            "A collection
            "This object specifies the PGP algorithm the proxy uses."
       ::= { sipProxyCfgEntry 10 }

   sipProxyAuthRealm OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies the realm used in Proxy-Authenticate
             headers.  Note that this may need to be stored per user."
       ::= { sipProxyCfgEntry 11 }

   sipProxyNonceLifeTime OBJECT-TYPE
       SYNTAX Integer32 (0..65535)
       UNITS "milliseconds"
       MAX-ACCESS read-write
       STATUS current
       DESCRIPTION
            "This object specifies the life-time of objects providing configuration common a given nonce.  A
             nonce is a server specified value whose contents are
             opaque to SIP Proxy the entity being authenticated and Redirect servers."

Lingle/Maeng/Walker                                                 59 which is used
             in calculating authentication data.  If this object has a
             value of zero, then
             nonces are not reused."
       ::= { sipServerMIBGroups 1 sipProxyCfgEntry 12 }

   --sipServerStatsGroup OBJECT-GROUP

   --    OBJECTS {
   -- none at Proxy-Authenticate received by this time server
   --    } (i.e. this server is being authenticated by a peer)
   --
   sipPgpPrivateKey OBJECT-TYPE
       SYNTAX     OCTET STRING(SIZE(0..255))
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "The value of this object is the server's private PGP key,
             used for both PGP authentication of this server and for
             PGP-based
             encryption."
       ::= { sipProxyCfgEntry 13 }

   sipRxProxyAuthTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipRxProxyAuthEntry
       MAX-ACCESS not-accessible
       STATUS     current
   --
       DESCRIPTION
   --         "A collection of objects providing common statistics
            "This table contains authentication data for
   --          SIP Proxy and Redirect servers."
   -- peers of each
             proxy server in this system.  The instances of proxy
             server are uniquely identified by the applIndex."
       ::= { sipServerMIBGroups sipProxyCfg 2 }

   sipProxyConfigGroup OBJECT-GROUP
       OBJECTS {
               sipRequestMaxExpires,
               sipProxyStateful,
               sipProxySendsCancel,
               sipProxyForwardAll1xx,
               sipProxyRecursion,
               sipProxyProvideAlternatives,
               sipProxyRecordRoute,
               sipProxyStateTimeout,
               sipProxyAuthMethod,
               sipProxyAuthPgpAlgorithm,
               sipProxyAuthRealm,
               sipProxyNonceLifeTime,
               sipPgpPrivateKey,
               sipRxProxyAuthRealm,
               sipRxProxyAuthPassword,
               sipRxProxyAuthStatus,
               sipHideRespect
       }

   sipRxProxyAuthEntry OBJECT-TYPE
       SYNTAX     SipRxProxyAuthEntry
       MAX-ACCESS not-accessible

   Lingle/Maeng/Mule/Walker                                         69
       STATUS     current
       DESCRIPTION
            "A collection of objects providing configuration
            "This object contains authentication data for
             SIP Proxy servers." a single
             peer."
       INDEX { applIndex, sipRxProxyAuthIndex }
       ::= { sipServerMIBGroups 3 sipRxProxyAuthTable 1 }

   sipProxyStatsGroup OBJECT-GROUP
       OBJECTS

   SipRxProxyAuthEntry ::=
       SEQUENCE {
               sipNumProxyRequireFailures
                sipRxProxyAuthIndex              Unsigned32,
                sipRxProxyAuthRealm              SnmpAdminString,
                sipRxProxyAuthPassword           OCTET STRING,
                sipRxProxyAuthStatus             RowStatus
       }

   sipRxProxyAuthIndex OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A collection of objects providing statistics for
             SIP Proxy servers."
            "This object uniquely identifies a conceptual row in the
             table."
       ::= { sipServerMIBGroups 4 }

   --sipProxyNotifGroup NOTIFICATION-GROUP
   --    OBJECTS {
   -- none at this time
   -- sipRxProxyAuthEntry 1 }
   --

   sipRxProxyAuthRealm OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-create
       STATUS     current
   --
       DESCRIPTION

Lingle/Maeng/Walker                                                 60
   --         "A collection of notifications defined for SIP
   --          Proxy servers."
   --
            "This object contains the realm that is specified by
             another server when it is authenticating this server."
       ::= { sipServerMIBGroups 5 }

   --sipRedirectConfigGroup OBJECT-GROUP
   --    OBJECTS {
   -- none at this time
   -- sipRxProxyAuthEntry 2 }
   --

   sipRxProxyAuthPassword OBJECT-TYPE
       SYNTAX     OCTET STRING(SIZE(1..4095))
       MAX-ACCESS read-create
       STATUS     current
   --
       DESCRIPTION
   --         "A collection of objects providing configuration for
   --          SIP Redirect servers."
   --
            "This object contains the password that this server uses
             when it is being authenticated by another server using the
             realm specified by the sipRxProxyAuthRealm object in this
             table row."
       ::= { sipServerMIBGroups 6 }

   --sipRedirectStatsGroup OBJECT-GROUP
   --    OBJECTS {
   -- none at this time
   -- sipRxProxyAuthEntry 3 }
   --

   sipRxProxyAuthStatus OBJECT-TYPE
       SYNTAX     RowStatus
       MAX-ACCESS read-create
       STATUS     current
   --
       DESCRIPTION
   --         "A collection
            "The row status of objects providing statistics for
   --          SIP Redirect servers."
   -- the entry. This object is required
             to create or delete rows remotely by a manager."
       ::= { sipServerMIBGroups 7 sipRxProxyAuthEntry 4 }

   --sipRedirectNotifGroup NOTIFICATION-GROUP

   --    OBJECTS {
   -- none at this time
   --    } Proxy Server Statistics
   --

   Lingle/Maeng/Mule/Walker                                         70
   sipProxyStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipProxyStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
   --    DESCRIPTION
   --         "A collection of notifications defined for SIP
   --          Redirect servers."
   --    ::= { sipServerMIBGroups 8 }

   END

5.6. SIP Registrar

   SIP-REGISTRAR-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        Counter32,
        Gauge32,
        Unsigned32
             FROM SNMPv2-SMI

        DateAndTime,
        RowStatus,
        TimeStamp,
        TruthValue
             FROM SNMPv2-TC

Lingle/Maeng/Walker                                                 61
        MODULE-COMPLIANCE,
        OBJECT-GROUP
             FROM SNMPv2-CONF

        SnmpAdminString
             FROM SNMP-FRAMEWORK-MIB

        SipServerActions
             FROM SIP-TC

        sipMIB
             FROM SIP-MIB-SMI

        applIndex
             FROM NETWORK-SERVICES-MIB;

   sipRegistrarMIB MODULE-IDENTITY
        LAST-UPDATED   "200007080000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB Team email: sip-mib@egroups.com

                 Co-editor  Kevin Lingle
                            Cisco Systems, Inc.
                 postal:    7025 Kit Creek Road
                            P.O. Box 14987
                            Research Triangle Park, NC 27709
                            USA
                 email:     klingle@cisco.com
                 phone:     +1-919-392-2029

                 Co-editor  Joon Maeng
                            VTEL Corporation
                 postal:    108 Wild Basin Rd.
                            Austin, TX 78746
                            USA
                 email:     joon_maeng@vtel.com
                 phone:     +1-512-437-4567

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    80 Hines Road
                            Kanata, ON  K2K 2T8
                            Canada
                 email:     drwalker@ss8networks.com
                 phone:     +1 613 592 2100"
        DESCRIPTION
                "Initial version of Session Initiation Protocol (SIP)
                 Registrar MIB module.

                 SIP is an application-layer signalling protocol for
                 creating, modifying and terminating multimedia
                 sessions with one or more participants. These sessions

Lingle/Maeng/Walker                                                 62
                 include Internet multimedia conferences and Internet
                 telephone calls.
       DESCRIPTION
            "This table contains the statistics objects applicable
             to all SIP is defined Proxy Servers in RFC 2543 (March
                 1999).

                 A Registrar is a server that accepts REGISTER
                 requests.  A Registrar is typically co-located with this system.

             Each row represents those objects for a particular
             SIP Proxy or Server.  The instances of SIP Proxy Server
             are uniquely identified by applIndex."
       ::= { sipProxyStats 1 }

   sipProxyStatsEntry OBJECT-TYPE
       SYNTAX     SipProxyStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of summary statistics."
       INDEX { applIndex }
       ::= { sipProxyStatsTable 1 }

   SipProxyStatsEntry ::=
       SEQUENCE {
                sipNumProxyRequireFailures Counter32
       }

   sipNumProxyRequireFailures OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the number of occurrences of
             unsupported options being specified in received Proxy-
             Require headers.  Such occurrences result in a 420 Bad
             Extension status code being
             returned."
       ::= { sipProxyStatsEntry 1 }

   --
   -- sipRedir group
   -- This group contains MIB objects related to SIP Redirect Server." Servers.
   --
   sipRedir               OBJECT IDENTIFIER ::= { sipMIB 5 sipServerMIB 4 }
   sipRedirCfg            OBJECT IDENTIFIER ::= { sipRedir 1 }
   sipRedirStats          OBJECT IDENTIFIER ::= { sipRedir 2 }

   -- none at this time

   --
   -- sipReg group
   -- This group contains MIB objects related to SIP Registrars.
   --
   sipReg                 OBJECT IDENTIFIER ::= { sipServerMIB 5 }
   sipRegCfg              OBJECT IDENTIFIER ::= { sipRegistrarMIB sipReg 1 }
   sipRegStats            OBJECT IDENTIFIER ::= { sipRegistrarMIB sipReg 2 }

   Lingle/Maeng/Mule/Walker                                         71
   --
   -- Registrar Configuration
   --
   sipRegCfgTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipRegCfgEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains configuration objects applicable
             SIP registrars.  Each row represents those objects
             for a particular SIP registrar present in this system.
             The instances of SIP registrars are uniquely identified
             by applIndex."
       ::= { sipRegCfg 1 }

   sipRegCfgEntry OBJECT-TYPE
       SYNTAX     SipRegCfgEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of common configuration."
       INDEX { applIndex }
       ::= { sipRegCfgTable 1 }

   SipRegCfgEntry ::=
       SEQUENCE {
                sipRegAllowThirdParty           TruthValue,
                sipRegContactDfltExpiryDuration Unsigned32,
                sipRegContactDfltExpiryDate     DateAndTime,
                sipRegMaxContactExpiryDate      Unsigned32,
                sipRegRespHasContacts           TruthValue,
                sipRegMaxUsers                  Unsigned32,
                sipRegCurrentUsers              Gauge32              Gauge32,
                sipRegDfltRegActiveInterval     Unsigned32
       }

   sipRegAllowThirdParty OBJECT-TYPE

Lingle/Maeng/Walker                                                 63
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether or not the Registrar should
             allows third party registrations. In third-party
             registration, the entity issuing the request (in the From
             header) is different from the entity being registered (in
             the To header) to whom the
             provided Contact information applies.

             If the value of this object is TRUE, the Registrar allows
             third party registrations.  If the value is FALSE, third
             party registrations are rejected: a 403 Forbidden status
             code is returned to the requestor."
       REFERENCE
            "RFC 2543, Section 4.2.6"
       ::= { sipRegCfgEntry 1 }

   Lingle/Maeng/Mule/Walker                                         72
   sipRegContactDfltExpiryDuration OBJECT-TYPE
       SYNTAX     Unsigned32
       UNITS      "seconds"
       MAX-ACCESS read-write
       STATUS     current
   DESCRIPTION
            "This object specifies the default expiration (time-to-
             live) of Contact information that is provided by User
             Agents when registering with this Registrar.  This value
             is only used when no expiration has been specified by the
             user in the REGISTER
             request.

             If the value is applied to a registration and is different
             from the default (one hour), the server must return the
             value to the registered User Agent.

             The value contained in this object only applies if the
             value of the sipContactDfltExpiryDate object is NULL.  If
             the value of this object applies, and is zero, then no
             default expiry is applied to registered contact
             information."
       REFERENCE
             "RFC 2543, Section 4.2.6"
       DEFVAL { 3600 }
       ::= { sipRegCfgEntry 2 }

   sipRegContactDfltExpiryDate OBJECT-TYPE
       SYNTAX     DateAndTime
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies the default expiration date (time-
             to-live) of Contact information that is provided by User
             Agents when registering with this Registrar.  This value

Lingle/Maeng/Walker                                                 64
             is only used when no expiration has been specified by the
             user in the REGISTER request.

             If this value is applied to a registration, the server
             must return the value to the registered User Agent.

             The value contained in this object only applies if the
             value of the sipContactDfltExpiryDuration object is zero.
             If the value of this object applies, and is NULL, then no
             default expiry is applied to
             registered contact information."
       REFERENCE
            "RFC 2543, Section 4.2.6"
       ::= { sipRegCfgEntry 3 }

   sipRegMaxContactExpiryDate OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       UNITS      "seconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies the maximum expiry that may be

   Lingle/Maeng/Mule/Walker                                         73
             requested by a User Agent for a particular Contact.  User
             Agents can specify expiry using either an Expiry header in
             a REGISTER request, or using an Expires parameter in a
             Contact header in a REGISTER request.  If the value
             requested by the User Agent is greater than the value of
             this object, then the contact information is given the
             duration specified by this object, and that duration
             is indicated to the User Agent in the response."
       DEFVAL { 4294967295 }
       ::= { sipRegCfgEntry 4 }

   sipRegRespHasContacts OBJECT-TYPE
       SYNTAX     TruthValue
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies whether or not the Registrar should
             return all currently reachable locations for a
             successfully registering party in the REGISTER response
             message.

             If the value of this object is TRUE, the Registrar returns
             the locations in the REGISTER response.  If the value is
             FALSE, no location information is provided."
       ::= { sipRegCfgEntry 5 }

   sipRegMaxUsers OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object specifies the maximum number of users that the

Lingle/Maeng/Walker                                                 65
             registrar supports.  The current number of users is
             reflected by sipRegCurrentUsers."
       ::= { sipRegCfgEntry 6 }

   sipRegCurrentUsers OBJECT-TYPE
       SYNTAX     Gauge32 (0..4294967295)
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object specifies the number of users currently
             configured on the registrar."
       ::= { sipRegCfgEntry 7 7 }

   sipRegDfltRegActiveInterval OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       UNITS      "seconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object specifies the default time interval the
             Registrar considers registrations to be active.  The
             value is used to compute the Expires header in the
             REGISTER response.  If a user agent requests a time
             interval shorter than specified by this object, the
             Registrar should honor that request."

   Lingle/Maeng/Mule/Walker                                         74
       REFERENCE "Expires header, section 6.23 RFC2543"
       ::= { sipRegCfgEntry 8 }

   --
   -- Per User Information
   --
   sipRegUserTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipRegUserEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains information on all users registered to
             each Registrar in this system.  The instances of SIP
             Registrar are uniquely identified by applIndex."
       ::= { sipRegCfg 2 }

   sipRegUserEntry OBJECT-TYPE
       SYNTAX     SipRegUserEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This entry contains information for a single user
             registered to this Registrar."
       INDEX { applIndex, sipUserIndex }
       ::= { sipRegUserTable 1 }

   SipRegUserEntry ::=
       SEQUENCE {
                sipUserIndex                         Unsigned32,
                sipUserUri                           SnmpAdminString,
                sipUserPassword                      OCTET STRING,
                sipUserAuthenticationFailures        Counter32,
                sipUserTableRowStatus                RowStatus
       }

   sipUserIndex OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This object uniquely identifies a conceptual row in the
             table."
       ::= { sipRegUserEntry 1 }

Lingle/Maeng/Walker                                                 66

   sipUserUri OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object contains the user's address-of-record.  It is
             the main form by which the registrar knows the user.  The
             format is typically 'user@domain'.  It is contained in the
             To header for all REGISTER requests."
       ::= { sipRegUserEntry 2 }

   sipUserPassword OBJECT-TYPE
       SYNTAX     OCTET STRING (SIZE(0..255))

   Lingle/Maeng/Mule/Walker                                         75
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object specifies the password that the user must
             enter when being authenticated."
       ::= { sipRegUserEntry 3 }

   sipUserAuthenticationFailures OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains a count of the number of times the
             user has failed authentication."
       ::= { sipRegUserEntry 4 }

   sipUserTableRowStatus OBJECT-TYPE
       SYNTAX     RowStatus
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "The row status of the entry. This object is required
             to create or delete rows remotely by a manager."
       ::= { sipRegUserEntry 5 }

   --
   -- Per Contact Information
   --
   sipContactTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipContactEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains information on every location where a
             registered user (specified by sipUserIndex) wishes to be
             found (i.e. the user has provided Contact information) information to
             each SIP Registrar in this system. system).

             The instances of SIP Registrar are uniquely identified by
             applIndex."
       ::= { sipRegCfg 3 }

Lingle/Maeng/Walker                                                 67

   sipContactEntry OBJECT-TYPE
       SYNTAX     SipContactEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This entry contains information for a single Contact.
             Multiple contacts may exist for a single user."
       INDEX { applIndex, sipUserIndex, sipContactIndex }
       ::= { sipContactTable 1 }

   SipContactEntry ::=
       SEQUENCE {
                sipContactIndex                Unsigned32,
                sipContactDisplayName          SnmpAdminString,
                sipContactURI                  SnmpAdminString,

   Lingle/Maeng/Mule/Walker                                         76
                sipContactLastUpdated          TimeStamp,
                sipContactExpiry               DateAndTime,
                sipContactAction               SipServerActions,
                sipContactPreference           OCTET STRING,
                sipContactAction               INTEGER,
                sipContactRetryAfter           DateAndTime
       }

   sipContactIndex OBJECT-TYPE
       SYNTAX     Unsigned32 (1..4294967295)
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Along with the sipUserIndex, this object uniquely
             identifies a conceptual row in the table."
       ::= { sipContactEntry 1 }

   sipContactDisplayName OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the display name for the Contact.
             For example, 'Santa at Home', or 'Santa on his Sled',
             corresponding to contact URLs of
             sip:BigGuy@sip.northpole.ca or
             sip:sclaus817@sip.mobile.com, respectively."
       ::= { sipContactEntry 2 }

   sipContactURI OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains either a SIP URL or a URI where the
             user can be contacted.  This URI is normally returned to a
             client from a redirect server, or is used as the
             RequestURI in a SIP request line for requests forwarded by
             a proxy."

Lingle/Maeng/Walker                                                 68
       ::= { sipContactEntry 3 }

   sipContactLastUpdated OBJECT-TYPE
       SYNTAX     TimeStamp
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object indicates the time when this contact
             information was accepted.  If the contact information is
             updated via a subsequent REGISTER of the same information,
             this object is also updated."
       ::= { sipContactEntry 4 }

   sipContactExpiry OBJECT-TYPE
       SYNTAX     DateAndTime
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the date and time when the contact

   Lingle/Maeng/Mule/Walker                                         77
             information will no longer be valid.  Such times may be
             specified by the user at registration (Expires header or
             expiry parameter in the Contact information), or a system
             default can be applied."
       ::= { sipContactEntry 5 }

   sipContactPreference OBJECT-TYPE
       SYNTAX     OCTET STRING (SIZE(0..255))
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object specifies the preference for this contact
             relative to all other active contacts for same user.  A
             registering user may provide this preference as a 'qvalue'
             parameter in the Contact header.

             The format of this item is a decimal number between 0
             and 1 (for example 0.9).  Higher values indicate locations
             preferred by the user."
       REFERENCE
            "RFC 2543, Section 6.13"
       ::= { sipContactEntry 6 }

   sipContactAction OBJECT-TYPE
       SYNTAX     SipServerActions     INTEGER {
                          redirect(1),
                          proxy(2)
                  }
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object indicates whether the user wanted the server
             to act as a redirect server or as a proxy server.  It is
             specified by the optional 'action' parameter in the
             Contact header."
       ::= { sipContactEntry 7 }

   sipContactRetryAfter OBJECT-TYPE

Lingle/Maeng/Walker                                                 69
       SYNTAX     DateAndTime
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object indicates that the contact information is
             currently inactive, and that it should only be activated
             after the date and time specified by the object.  This
             value is provided by a user when deleting contact
             information using a REGISTER request containing a Retry-
             After header."
       REFERENCE
            "RFC 2543, Section 6.32"
       ::= { sipContactEntry 8 sipContactEntry 8 }

   --
   -- Registrar Statistics
   --
   sipRegStatsTable OBJECT-TYPE

   Lingle/Maeng/Mule/Walker                                         78
       SYNTAX     SEQUENCE OF SipRegStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the summary statistics objects
             applicable to all SIP Registrars in this system.
             Each row represents those objects for a particular
             SIP Registrar.  The instances of SIP Registrars are
             uniquely identified by applIndex."
       ::= { sipRegStats 1 }

   sipRegStatsEntry OBJECT-TYPE
       SYNTAX     SipRegStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of summary statistics."
       INDEX { applIndex }
       ::= { sipRegStatsTable 1 }

   SipRegStatsEntry ::=
       SEQUENCE {
                sipRegAcceptedRegistrations Counter32,
                sipRegRejectedRegistrations Counter32
       }

   sipRegAcceptedRegistrations OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains a count of the number of REGISTER
             requests that have been accepted (status code 200) by the
             Registrar.  This includes additions of new contact
             information, refreshing contact information, as well as
             requests for deletion of contact information."
       ::= { sipRegStatsEntry 1 }

   sipRegRejectedRegistrations OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains a count of the number REGISTER
             requests that have been rejected by the Registrar."
       ::= { sipRegStatsEntry 2 }

   --
   -- Notifications
   --
   sipServerMIBNotif      OBJECT IDENTIFIER ::= { sipServerMIB 5 }
   sipProxyNotif          OBJECT IDENTIFIER ::= { sipServerMIBNotif 1 }
   sipRedirNotif          OBJECT IDENTIFIER ::= { sipServerMIBNotif 2 }

   -- none at this time

   Lingle/Maeng/Mule/Walker                                         79
   --
   -- Conformance
   --
   sipServerMIBConformance
     OBJECT IDENTIFIER ::= { sipServerMIB 6 }
   sipServerMIBCompliances
     OBJECT IDENTIFIER ::= { sipServerMIBConformance 1 }
   sipServerMIBGroups
     OBJECT IDENTIFIER ::= { sipServerMIBConformance 2 }

   --
   -- Registrar Statistics Compliance Statements
   --
   sipRegStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipRegStatsEntry
       MAX-ACCESS not-accessible
   sipProxyServerCompliance MODULE-COMPLIANCE
       STATUS     current
       DESCRIPTION
            "This table contains the summary statistics objects
             applicable to all
            "The compliance statement for SIP Registrars in entities acting
             as proxy servers."

       MODULE -- this system.
             Each row represents those objects module
            MANDATORY-GROUPS { sipServerConfigGroup,
                               sipProxyConfigGroup,
                               sipProxyStatsGroup }
   --                            sipProxyNotifGroup,
   --                            sipServerStatsGroup,
   --                            sipServerNotifGroup }
       ::= { sipServerMIBCompliances 1 }

   sipRedirectServerCompliance MODULE-COMPLIANCE
       STATUS     current
       DESCRIPTION
            "The compliance statement for a particular
             SIP Registrar.  The instances of SIP Registrars are
             uniquely identified by applIndex." entities acting
             as redirect servers."

       MODULE -- this module
            MANDATORY-GROUPS { sipServerConfigGroup }
   --                              sipServerStatsGroup,
   --                              sipServerNotifGroup,
   --                              sipRedirectConfigGroup,
   --                              sipRedirectStatsGroup,
   --                              sipRedirectNotifGroup }
       ::= { sipRegStats 1 sipServerMIBCompliances 2 }

   sipRegStatsEntry OBJECT-TYPE
       SYNTAX     SipRegStatsEntry
       MAX-ACCESS not-accessible

   sipRegistrarServerCompliance MODULE-COMPLIANCE
       STATUS     current
       DESCRIPTION
            "A row
            "The compliance statement for SIP entities acting
             as registrars."

       MODULE -- this module
            MANDATORY-GROUPS { sipServerConfigGroup,
                               sipRegistrarConfigGroup,
                               sipRegistrarStatsGroup }

   Lingle/Maeng/Mule/Walker                                         80
   --                            sipRegistrarNotifGroup,
   --                            sipServerStatsGroup,
   --                            sipServerNotifGroup,

       ::= { sipServerMIBCompliances 3 }

   --
   -- Units of summary statistics."
       INDEX Conformance
   --

   sipServerConfigGroup OBJECT-GROUP
       OBJECTS { applIndex
               sipServerHost,
               sipInformationTryingInterval,
               sipPgpVersion,
               sipServerDfltAction,
               sipServerRespectUAAction
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing configuration common
             to SIP Proxy and Redirect servers."
       ::= { sipRegStatsTable sipServerMIBGroups 1 }

   SipRegStatsEntry ::=
       SEQUENCE

   --sipServerStatsGroup OBJECT-GROUP
   --    OBJECTS {
                sipRegAcceptedRegistrations Counter32,
                sipRegRejectedRegistrations Counter32
   -- none at this time
   --    }

   sipRegAcceptedRegistrations OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
   --    STATUS  current
   --    DESCRIPTION
            "This object contains a count of the number
   --         "A collection of REGISTER
             requests that have been accepted (status code 200) by the

Lingle/Maeng/Walker                                                 70
             Registrar.  This includes additions objects providing common statistics for
   --          SIP Proxy and Redirect servers."
   --    ::= { sipServerMIBGroups 2 }

   sipProxyConfigGroup OBJECT-GROUP
       OBJECTS {
               sipRequestMaxExpires,
               sipProxyStateful,
               sipProxySendsCancel,
               sipProxyForwardAll1xx,
               sipProxyRecursion,
               sipProxyProvideAlternatives,
               sipProxyRecordRoute,
               sipProxyStateTimeout,
               sipProxyAuthMethod,
               sipProxyAuthPgpAlgorithm,
               sipProxyAuthRealm,
               sipProxyNonceLifeTime,
               sipPgpPrivateKey,
               sipRxProxyAuthRealm,
               sipRxProxyAuthPassword,
               sipRxProxyAuthStatus
       }
       STATUS  current
       DESCRIPTION
            "A collection of new contact
             information, refreshing contact information, as well as
             requests objects providing configuration for deletion of contact information."

   Lingle/Maeng/Mule/Walker                                         81
             SIP Proxy servers."
       ::= { sipRegStatsEntry 1 sipServerMIBGroups 3 }

   sipProxyStatsGroup OBJECT-GROUP
       OBJECTS {
               sipNumProxyRequireFailures
       }

   sipRegRejectedRegistrations OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS  current
       DESCRIPTION
            "This object contains a count
            "A collection of the number REGISTER
             requests that have been rejected by the Registrar." objects providing statistics for
             SIP Proxy servers."
       ::= { sipRegStatsEntry 2 sipServerMIBGroups 4 }

   --sipProxyNotifGroup NOTIFICATION-GROUP
   --    OBJECTS {
   -- Notifications none at this time
   --    }
   --    STATUS  current
   --    DESCRIPTION
   --         "A collection of notifications defined for SIP
   --          Proxy servers."
   --
   sipRegMIBNotif         OBJECT IDENTIFIER    ::= { sipRegistrarMIB 3 sipServerMIBGroups 5 }

   --sipRedirectConfigGroup OBJECT-GROUP
   --    OBJECTS {
   -- none at this time
   --    }
   --    STATUS  current
   -- Conformance    DESCRIPTION
   --         "A collection of objects providing configuration for
   --          SIP Redirect servers."
   --
   sipRegMIBConformance
     OBJECT IDENTIFIER    ::= { sipRegistrarMIB 4 sipServerMIBGroups 6 }
   sipRegMIBCompliances
     OBJECT IDENTIFIER ::=

   --sipRedirectStatsGroup OBJECT-GROUP
   --    OBJECTS { sipRegMIBConformance 1
   -- none at this time
   --    }
   sipRegMIBGroups
     OBJECT IDENTIFIER
   --    STATUS  current
   --    DESCRIPTION
   --         "A collection of objects providing statistics for
   --          SIP Redirect servers."
   --    ::= { sipRegMIBConformance 2 sipServerMIBGroups 7 }

   --sipRedirectNotifGroup NOTIFICATION-GROUP
   --    OBJECTS {
   -- Compliance Statements none at this time
   --    }
   --
   sipRegCompliance MODULE-COMPLIANCE    STATUS  current
   --    DESCRIPTION
            "The compliance statement
   --         "A collection of notifications defined for SIP entities."

       MODULE
   -- this module
            MANDATORY-GROUPS { sipRegistrarConfigGroup,
                               sipRegistrarStatsGroup }          Redirect servers."
   --                            sipRegistrarNotifGroup }    ::= { sipRegMIBCompliances 1 sipServerMIBGroups 8 }

   sipRegistrarConfigGroup OBJECT-GROUP
       OBJECTS {
               sipRegAllowThirdParty,

Lingle/Maeng/Walker                                                 71
               sipRegContactDfltExpiryDuration,

   Lingle/Maeng/Mule/Walker                                         82
               sipRegContactDfltExpiryDate,
               sipRegMaxContactExpiryDate,
               sipRegRespHasContacts,
               sipRegMaxUsers,
               sipRegCurrentUsers,
               sipRegDfltRegActiveInterval,
               sipUserUri,
               sipUserPassword,
               sipUserAuthenticationFailures,
               sipUserTableRowStatus,
               sipContactDisplayName,
               sipContactURI,
               sipContactLastUpdated,
               sipContactExpiry,
               sipContactPreference,
               sipContactAction,
               sipContactRetryAfter
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing configuration for
             SIP Registrars."
       ::= { sipRegMIBGroups 1 sipServerMIBGroups 9 }

   sipRegistrarStatsGroup OBJECT-GROUP
       OBJECTS {
               sipRegAcceptedRegistrations,
               sipRegRejectedRegistrations
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing statistics for
             SIP Registrars."
       ::= { sipRegMIBGroups 2 sipServerMIBGroups 10 }

   --sipRegistrarNotifGroup NOTIFICATION-GROUP
   --    OBJECTS {
   -- none at this time
   --    }
   --    STATUS  current
   --    DESCRIPTION
   --         "A collection of notifications defined for SIP
   --          Registrars."
   --    ::= { sipRegMIBGroups 3 sipServerMIBGroups 11 }

   END

6. Security Considerations

   There are a number of management objects defined in this MIB that
   have a MAX-ACCESS clause of read-write and/or read-create.  Such
   objects may be considered sensitive or vulnerable in some network
   environments. The support for SET operations in a non-secure

Lingle/Maeng/Walker                                                 72

   Lingle/Maeng/Mule/Walker                                         83
   environment without proper protection can have a negative effect on
   network operations.

   The managed objects in this MIB contain sensitive information since,
   collectively, they allow tracing and influencing of connections in
   SIP devices entities and provide information of their connection
   characteristics.

   It is thus important to control even GET access to these objects and
   possibly to even encrypt the values of these object objects when sending
   them over the network via SNMP. Not all versions of SNMP provide
   features for such a secure environment.

   SNMPv1 by itself is not a secure environment. Even if the network
   itself is secure (for example by using IPSec), even then, there is
   no control as to who on the secure network is allowed to access and
   GET/SET (read/change/create/delete) the objects in this MIB.

   It is recommended that the implementers consider the security
   features as provided by the SNMPv3 framework. Specifically, the use
   of the User-based Security Model RFC 2574 [18] and the View-based
   Access Control Model RFC 2575 [19] is recommended.

   It is then a customer/user responsibility to ensure that the SNMP
   entity giving access to an instance of this MIB, is properly
   configured to give access to the objects only to those principals
   users) that have legitimate rights to indeed GET or SET
   (change/create/delete) them.

7. Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   intellectual property or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; neither does it represent that it
   has made any effort to identify any such rights.  Information on the
   IETF's procedures with respect to rights in standards-track and
   standards-related documentation can be found in BCP-11.  Copies of
   claims of rights made available for publication and any assurances
   of licenses to be made available, or the result of an attempt made
   to obtain a general license or permission for the use of such
   proprietary rights by implementors or users of this specification
   can be obtained from the IETF Secretariat.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights which may cover technology that may be required to practice
   this standard.  Please address the information to the IETF Executive
   Director.

8. Full Copyright Statement

Lingle/Maeng/Walker                                                 73

   Lingle/Maeng/Mule/Walker                                         84
   Copyright(C) The Internet Society (2000). (2001).  All Rights Reserved. This
   document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph
   are included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

   Lingle/Maeng/Mule/Walker                                         85

9. References

   [1]  Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for
        Describing SNMP Management Frameworks", RFC 2271, January 1998.

   [2]  Rose, M. and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based Internets", STD 16, RFC
        1155, May 1990.

   [3]  Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
        RFC 1212, March 1991.

   [4]  Rose, M., "A Convention for Defining Traps for use with the
        SNMP", RFC 1215, March 1991.

   [5]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Structure of Management Information
        Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

   [6]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58,
        RFC 2579, April 1999.

   [7]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Conformance Statements for SMIv2", STD
        58, RFC 2580, April 1999.

   [8]  Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
        Network Management Protocol", STD 15, RFC 1157, May 1990.

Lingle/Maeng/Walker                                                 74

   [9]  Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
        "Introduction to Community-based SNMPv2", RFC 1901, January
           1996.

   [10] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
        "Transport Mappings for Version 2 of the Simple Network
        Management Protocol (SNMPv2)", RFC 1906, January 1996.

   [11] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message
        Processing and Dispatching for the Simple Network Management
        Protocol (SNMP)", RFC 2272, January 1998.

   [12] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM)
        for version 3 of the Simple Network Management Protocol
        (SNMPv3)", RFC 2274, January 1998.

   [13] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
        Operations for Version 2 of the Simple Network Management
        Protocol (SNMPv2)", January 1996.

   [14] Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications", RFC
        2273, January 1998

   Lingle/Maeng/Mule/Walker                                         86
   [15] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
        Control Model (VACM) for the Simple Network Management Protocol
        (SNMP)", RFC 2275, January 1998.

   [16] Bradner, S., "Key words for use in RFCs to Indicate Requirement
        Levels", BCP 14, RFC 2119, March 1997.

   [17] M. Handley, H. Schulzrinne, E. Schooler, and J. Rosenberg,
        "SIP: Session Initiation Protocol", RFC 2543, March 1999.

   [18] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM)
        for version 3 of the Simple Network Management Protocol
        (SNMPv3)", RFC 2574, April 1999.

   [19] N. Freed, and S, Kille, "Network Killle, ˘Network Services Monitoring MIB", RFC Monitor MIB÷,RFC
        2788, March 2000. 2000

   [20] Steve S. Donavan, "The SIP INFO Method", Internet Draft, ietf-sip-
        info-method-04.txt, work in progress. RFC 2976, October 2000

10. Authors' Author's Addresses

   Kevin Lingle
   Cisco Systems, Inc.
   7025 Kit Creek Road
   P.O. Box 14987
   Research Triangle Park, NC 27709 USA
   Email:
   email: klingle@cisco.com
   phone: +1-919-392-2029

Lingle/Maeng/Walker                                                 75 +1 919 392 2029

   Joon Maeng
   VTEL Corporation
   108 Wild Basin Rd.
   Austin, TX 78746 USA
   email: joon_maeng@vtel.com
   phone: +1-512-437-4567 +1 512 437 4567

   Jean-Francois MuleĂ
   Clarent Corporation
   700 Chesapeake Drive, MS 101
   Redwood City, CA 94063
   email: jfm@clarent.com
   phone: +1 650 481 2835

   Dave Walker
   SS8 Networks, Inc.
   80 Hines
   495 March Road
   Kanata, ON K2K 2T8 3G1
   Canada
   email: drwalker@ss8networks.com drwalker@ss8.com
   phone: +1 613 592 2100

Lingle/Maeng/Walker                                                 76

   Lingle/Maeng/Mule/Walker                                         87