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Versions: 00 01 02 03 04 05 06 07 08 09 10 11 12 RFC 4780

   Internet Engineering Task Force                            K. Lingle
   Internet Draft                                         Cisco Systems
   Document: draft-ietf-sip-mib-05.txt                         J. Maeng
   March 2003                                            ipDialog, Inc.
   Expires: August 2003                                       J-F. Mule
                                                              CableLabs
                                                              D. 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 RFC2026 [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 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) entities, which include
   User Agents, Proxy servers, Redirect servers and Registrars.








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   Table of Contents

   Abstract.........................................................1
   1. Introduction..................................................2
   2. The Internet-Standard Management Framework....................2
   3. Overview......................................................3
   4. Structure of SIP MIB..........................................3
    4.1.          Textual Conventions.............................4
    4.2.          Relationship to Other MIBs......................4
   5. Definitions...................................................7
    5.1.          SIP Textual Conventions.........................7
    5.2.          SIP Common......................................9
    5.3.          SIP User Agent.................................63
    5.4.          SIP Server (Registrar, Redirect & Proxy Server)67
   6. Changes from previous drafts.................................89
   7. Security Considerations......................................93
   8. Intellectual Property........................................94
   9. Full Copyright Statement.....................................94
   10.  Normative References.......................................96
   11.  Informative References.....................................96
   12.  Acknowledgments............................................96
   13.  Author's Addresses.........................................96


1. Introduction

   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) entities, which include
   User Agents, Proxy servers, Redirect servers and Registrars.

   Conventions used in this document
   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 BCP 14, RFC 2119
   [RFC2119].

2. The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a
   MIB module that is compliant to the SMIv2, which is described in STD


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   58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC
   2580 [RFC2580].


3. Overview

   The Session Initiation Protocol (SIP) [1] is an application-layer
   control (signaling) protocol for creating, modifying, and
   terminating sessions with one or more participants. These sessions
   include Internet telephone calls, multimedia distribution, and
   multimedia conferences. This MIB provides some managed objects for
   SIP entities defined in RFC 3261 - User Agent, Proxy server,
   Redirect 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 SIP
   entities. It provides for monitoring of status and protocol
   statistics, as well as for configuration of SIP entities. It also
   includes objects for the SIP INFO method [3].


4. Structure of SIP MIB

   This memo specifies four MIB modules.  They are SIP-COMMON-MIB, SIP-
   SERVER-MIB, SIP-UA-MIB and SIP-TC.  SIP-COMMON-MIB contains common
   objects used in all the SIP entities. SIP-SERVER-MIB contains
   objects specific to Registrars, Proxies and Redirect servers, and
   SIP-UA-MIB includes objects specific to User Agents.  SIP-TC defines
   the textual conventions used throughout MIB modules.

   The MIB Modules contain following groups of objects:

   -- SIP-COMMON-MIB: Common to all the SIP entities
      sipCommonConfigGroup,
      sipCommonStatsGroup,
      sipCommonConfigTimerGroup,
      sipCommonConfigTimerExtMethodGroup,
      sipCommonConfigRetryGroup,
      sipCommonConfigRetryExtMethodGroup,
      sipCommonStatsRetryGroup,
      sipCommonStatsRetryExtMethodsGroup,
      sipCommonNotifGroup,
      sipCommonStatusCodeNotifGroup.

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

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

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      sipUAConfigGroup

   To conform with this specification, an SNMP agent MUST implement
   SIP-TC, plus one instance of SIP-COMMON-MIB and one instance of the
   SIP entity-type-specific MIB (SIP-SERVER-MIB or SIP-UA-MIB) as
   applicable for each instance of a SIP entity being managed.  If a
   device has more than one sip entity or multiple instances of the
   same entity, it SHOULD implement multiple SIP modules. Section 4.2
   describes handling of multiple instances in detail.

4.1. Textual Conventions

   The data type SipTransportProtocol is used as textual conventions in
   this document.  These textual conventions have NO effect on either
   the syntax or the semantics of any managed object.  Objects defined
   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,
   which are adopted merely for the convenience of readers.


4.2. Relationship to Other MIBs

   There is a requirement to be able to support multiple instances of
   various SIP MIB modules in the context of a single system having a
   single SNMP agent.

   This requirement is solved by using the framework provided by the
   NETWORK-SERVICES-MIB, RFC 2788 [2]. A device implementing the SIP
   MIB MUST support the NETWORK-SERVICES-MIB and, at a minimum, it MUST
   support the applIndex and applName objects in applTable.  The
   following applName conventions will be adopted:

       o for a SIP Proxy entity, applName MUST be equal to "sip_proxy"
       o for a SIP Redirect entity, applName MUST be 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 any combination of Proxy, Registrar, or Redirect Server
         being managed as a single aggregate entity, the applName for
         the combined server entity MUST reflect the appropriate
         combination. For example, "sip_proxy_redirect" or
         "sip_proxy_registrar".

   The SNMP agent MAY support any combination of the other attributes
   in applTable.  If the following objects are supported, the object
   values SHOULD be populated as follows:

       o applVersion: version of the SIP application;  if the SIP
          protocol version is used, the value MUST be as defined in SIP
          [1], section 7.1.


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       o applUptime: value MUST be identical to sipServiceStartTime
          defined in the SIP-COMMON-MIB 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.

   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 tables below illustrate how a system acting as both Proxy and
   Registrar server might be configured to maintain separate SIP-
   COMMON-MIB instances.
   The NETWORK-SERVICES-MIB applTable might 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 tables would, however, only be populated with one
   row  indexed by applIndex=1 and applIndex=2 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(4)   |
      ----------+--------------------+----------------------+----

   while sipProxyCfgTable in SIP-SERVER-MIB might be populated as:

      applIndex | sipRequestMaxExpires | sipProxyStatefulness | ...
      ----------+----------------------+----------------------+----
          1     |        3600          | stateless(1)         |
      ----------+----------------------+----------------------+----

   and sipRegUserTable in SIP-SERVER-MIB might be populated as:

      applIndex | sipUserIndex |   sipUserUri             | ...

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      ----------+--------------+--------------------------+----
          2     |       1      | drwalker@ss8.com         |
      ----------+--------------+--------------------------+----
          2     |       2      | jmaeng@ipdialog.com      |
      ----------+--------------+--------------------------+----
          2     |       3      | klingle@cisco.com        |
      ----------+--------------+--------------------------+----
          2     |       4      | jfm@cablelabs.com        |
      ----------+--------------+--------------------------+----


   Example 2:
   This example illustrates how to represent a system acting as both
   Proxy and Registrar server, where the two entities share a single
   instance of SIP-COMMON-MIB.

   The NETWORK-SERVICES-MIB applTable might 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 | sipProxyStatefulness | ...
         ----------+----------------------+----------------------+----
             1     |        3600          | stateless(1)         |
         ----------+----------------------+----------------------+----

      and sipRegUserTable in SIP-SERVER-MIB might be populated as:

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



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













5. Definitions

5.1. SIP Textual Conventions

   SIP-TC DEFINITIONS ::= BEGIN

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

        TEXTUAL-CONVENTION
             FROM SNMPv2-TC;

   sipTC MODULE-IDENTITY
        LAST-UPDATED   "200302250000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB email: sip@ietf.org

                 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
                            ipDialog, Inc.
                 postal:    7701 N. Lamar Blvd., Suite 304
                            Austin, TX 78752-1023
                            USA
                 email:     jmaeng@ipdialog.com
                 phone:     +1 512 371 1770

                 Co-editor  Dave Walker
                            SS8 Networks, Inc.
                 postal:    495 March Road

   Lingle/Maeng/Mule/Walker                                   [Page 7]

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                            Kanata, ON K2K 3G1
                            Canada
                 email:     drwalker@ss8.com
                 phone:     +1 613 592 2100

                 Co-editor  Jean-Francois Mule
                            CableLabs
                 postal:    400 Centennial Parkway
                            Louisville, CO 80027
                            USA
                 email:     jf.mule@cablelabs.com
                 phone:     +1 303 661 3708  "
        DESCRIPTION
             "Session Initiation Protocol (SIP) MIB Textual
              Conventions module used by other SIP-related
              MIB Modules.

              Copyright (C) The Internet Society (2003). This version
              of this MIB module is part of RFC XXXX; see the RFC
              itself for full legal notices."
        REVISION        "200302250000Z"
        DESCRIPTION
             "Initial version of the IETF SIP-TC module.
              This version published as part of RFC XXXX."
        ::= { mib-2 xx }  -- xx to be assigned by IANA



   --
   -- Textual Conventions
   --

   SipTransportProtocol ::= TEXTUAL-CONVENTION
           STATUS current
           DESCRIPTION
                "This convention is a bit map.  Each bit represents a
                 transport protocol.  If a bit has value 1, then that
                 selected transport protocol is in some way dependent
                 on the context of the object using this convention.
                 If a 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

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5.2. SIP Common

  SIP-COMMON-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        NOTIFICATION-TYPE,
        Counter32,
        Integer32,
        Gauge32,
        TimeTicks,
        Unsigned32,
        mib-2
             FROM SNMPv2-SMI

        DateAndTime,
        RowStatus,
        TruthValue
             FROM SNMPv2-TC
        MODULE-COMPLIANCE,

        OBJECT-GROUP,
        NOTIFICATION-GROUP
             FROM SNMPv2-CONF

        SnmpAdminString
             FROM SNMP-FRAMEWORK-MIB

        SipTransportProtocol
             FROM SIP-TC

        applIndex
             FROM NETWORK-SERVICES-MIB

        InetPortNumber
             FROM INET-ADDRESS-MIB;

   sipCommonMIB MODULE-IDENTITY
        LAST-UPDATED   "200302250000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
        CONTACT-INFO
                "SIP MIB email: sip@ietf.org

                 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
                            ipDialog, Inc.
                 postal:    7701 N. Lamar Blvd., Suite 304

   Lingle/Maeng/Mule/Walker                                   [Page 9]

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                            Austin, TX 78752-1023
                            USA
                 email:     jmaeng@ipdialog.com
                 phone:     +1 512 371 1770

                 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
                            CableLabs
                 postal:    400 Centennial Parkway
                            Louisville, CO 80027
                            USA
                 email:     jf.mule@cablelabs.com
                 phone:     +1 303 661 3708  "
        DESCRIPTION
             "Session Initiation Protocol (SIP) Common MIB module.
              This module defines objects which 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 3261 (June
              2002).

              This MIB is defined for 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

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              requests.  A Registrar is typically co-located with a
              Proxy or Redirect Server.

              Copyright (C) The Internet Society (2003). This version
              of this MIB module is part of RFC XXXX; see the RFC
              itself for full legal notices."
        REVISION        "200302250000Z"
        DESCRIPTION
             "Initial version of the IETF SIP-COMMON-MIB module.
              This version published as part of RFC XXXX."
        ::= { mib-2 xx  }  -- xx to be assigned by IANA

   -- Top-Level Components of this MIB.
   sipCommonMIBNotifs     OBJECT IDENTIFIER ::= { sipCommonMIB 0 }
   sipCommonMIBObjects    OBJECT IDENTIFIER ::= { sipCommonMIB 1 }
   sipCommonMIBConform    OBJECT IDENTIFIER ::= { sipCommonMIB 2 }

   --
   -- This MIB contains objects that are common to all SIP entities.
   --
   sipCommonCfgBase       OBJECT IDENTIFIER ::= { sipCommonMIBObjects 1 }
   sipCommonCfgTimer      OBJECT IDENTIFIER ::= { sipCommonMIBObjects 2 }
   sipCommonCfgRetry      OBJECT IDENTIFIER ::= { sipCommonMIBObjects 3 }
   sipCommonCfgExpires    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 4 }
   sipCommonStatsSummary  OBJECT IDENTIFIER ::= { sipCommonMIBObjects 5 }
   sipCommonStatsMethod   OBJECT IDENTIFIER ::= { sipCommonMIBObjects 6 }
   sipCommonStatusCode    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 7 }
   sipCommonStatsTrans    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 8 }
   sipCommonStatsRetry    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 9 }
   sipCommonStatsOther    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 10 }

   --
   -- 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."
       ::= { sipCommonCfgBase 1 }

   sipCommonCfgEntry OBJECT-TYPE
       SYNTAX     SipCommonCfgEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of common configuration.

             Each row represents objects for a particular SIP
             entity instance present in this system.  applIndex
             is used to uniquely identify these instances of SIP
             entities and correlate them through the common
             framework of the NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipCommonCfgTable 1 }

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   SipCommonCfgEntry ::=
       SEQUENCE {
                sipProtocolVersion        SnmpAdminString,
                sipServiceOperStatus      INTEGER,
                sipServiceAdminStatus     INTEGER,
                sipServiceStartTime       TimeTicks,
                sipServiceLastChange      TimeTicks,
                sipOrganization           SnmpAdminString,
                sipMaxSessions            Unsigned32,
                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 }

  sipServiceOperStatus OBJECT-TYPE
       SYNTAX     INTEGER {
                          up(1),
                          down(2),
                          congested(3),
                          restarting(4),
                          quiescing(5),
                          testing(6),
                          unknown(7)
                  }
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the current operational state of the
             SIP application.

             up         : The application is operating normally, and
                          is processing (receiving and possibly
                          issuing) SIP requests and responses.
             down       : The application is currently unable to
                          process SIP messages.
             congested  : The application is operational but no
                          additional inbound transactions can be
                          accommodated at the moment.
             restarting : The application is currently unavailable
                          but it is in the process of restarting and
                          will, presumably, soon be able to process
                          SIP messages.
             quiescing  : The application is currently operational
                          but has been administratively put into
                          quiesce mode.  Additional inbound transactions

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                          may be rejected.
             testing    : The application is currently in test mode
                          and may not be able to process SIP messages.
             unknown    : The operational status cannot be determined
                          for some reason."
       ::= { sipCommonCfgEntry 2 }

   sipServiceAdminStatus OBJECT-TYPE
       SYNTAX     INTEGER {
                          noop(1),
                          up(2),
                          down(3),
                          reset(4),
                          quiesceSessions(5),
                          quiesceApplication(6)
                  }
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "This object is used to affect the overall operational
             state of the SIP application.  When read, this object
             always return a value of noop(1) since sipServiceOperStatus
             reflects the actual operational status.

             noop               : Setting this object to a noop value
                                  has no effect; when read, this value
                                  is always returned.
             up                 : Enable the application.
             down               : Abrupt shutdown. Immediately terminate.
             reset              : Restart application, reinitialize data.
             quiesceSessions    : Enable quiescence mode.  Stop accepting
                                  any new SIP sessions. Stop processing
                                  new transactions except for transactions
                                  associated with an existing session or
                                  call.
             quiesceApplications : Enable quiescence mode. Stop processing
                                  new SIP transactions except for
                                  transactions associated with existing
                                  applications. The exact application
                                  behavior should be specified by the
                                  implementation."
       ::= { 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 started prior to the 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

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       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 organization name which the SIP
             entity inserts into Organization headers of SIP messages
             processed by this system.  If the sting is empty, no
             Organization header is to be generated."
       REFERENCE
             "RFC 3261, Section 20.25"
       ::= { sipCommonCfgEntry 6 }

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

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

             If the value of this object is 'true', then the server
             requires a match, and if the RequestURI doesn't match the
             server's host name, a Location Service may be used to
             obtain information about a callee's possible location(s)
             or a 404 Not Found status code is returned by the server.
             If the value is 'false', then no match is required."
       REFERENCE
            "RFC 3261, Section 8.1.1.1"
       ::= { sipCommonCfgEntry 8 }


   --
   -- Support for multiple ports
   --
   sipPortTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipPortEntry
       MAX-ACCESS not-accessible
       STATUS     current

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       DESCRIPTION
            "This table contains the 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."
       ::= { sipCommonCfgBase 2 }

   sipPortEntry OBJECT-TYPE
       SYNTAX     SipPortEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Specification of a particular port.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipPort }
       ::= { sipPortTable 1 }

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

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

   sipTransportRcv OBJECT-TYPE
       SYNTAX     SipTransportProtocol
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object will specify the transport protocol the SIP
             entity will use to receive SIP messages.

             This object is a bit map.  Each bit represents a transport
             protocol.  If a bit has value 1, then that transport protocol
             is currently being used.  If a bit has value 0, then that
             transport protocol is currently not being used."
       ::= { sipPortEntry 2 }

   sipTransportSnd OBJECT-TYPE
       SYNTAX     SipTransportProtocol
       MAX-ACCESS read-create
       STATUS     current

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       DESCRIPTION
            "This object will specify the transport protocol the SIP
             entity will use to send SIP messages.

             This object is a bit map.  Each bit represents a transport
             protocol.  If a bit has value 1, then that transport protocol
             is currently being used.  If a bit has value 0, then that
             transport protocol is currently not being used."
       ::= { 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.  It is
             implementation specific as to whether objects in this table
             can be set while a row is 'active'."
       ::= { sipPortEntry 4 }


   --
   -- Support for multiple non-SIP URI schemes
   --
   sipUriSupportedTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipUriSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains a list of 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 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).

             URI schemes could, for example, contain URLs for phones, fax,
             or irc (if they were defined) or a mailto: (RFC 2368) URL."
       REFERENCE
             "RFC 3261, Section 20.10"
       ::= { sipCommonCfgBase 3 }

   sipUriSupportedEntry OBJECT-TYPE
       SYNTAX     SipUriSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A particular non-SIP URI supported by the SIP entity.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and

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             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipUriSupportedIndex }
       ::= { sipUriSupportedTable 1 }

   SipUriSupportedEntry ::=
       SEQUENCE {
                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 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 features
             supported by each SIP entity in this system, and which
             may be required by a peer. Definition of non-standard
             features is outside the scope of SIP, which only provides
             mechanisms whereby support for specific features may be
             signalled or requested.

             As and example of a non-standard feature, 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

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             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
             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)."
       REFERENCE
            "RFC 3261, Section 19.2"
       ::= { sipCommonCfgBase 4 }

   sipFtrSupportedEntry OBJECT-TYPE
       SYNTAX SipFtrSupportedEntry
       MAX-ACCESS not-accessible
       STATUS current
       DESCRIPTION
            "A particular feature supported by the SIP
             entity, and which may be required by a peer.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       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
       DESCRIPTION
            "This object indicates a particular feature
             which is supported by the SIP entity."
       ::= { sipFtrSupportedEntry 2 }


   --
   -- Support for extension methods

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   --
   sipExtMethodSupportedTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipExtMethodSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains a list of extension methods supported
             by each SIP entity in this system. These are in addition
             to the standard set of SIP methods discussed in Section
             7.1 of RFC 3261.  Any additional methods that may be
             incorporated into the SIP protocol should be represented
             by this table without any requirement to update this MIB.
             The table is informational in nature; conveying to the NMS
             capabilities of the managed system."
       ::= { sipCommonCfgBase 5 }

   sipExtMethodSupportedEntry OBJECT-TYPE
       SYNTAX     SipExtMethodSupportedEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A particular extension method supported by the SIP entity.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipExtMethodSupportedIndex }
       ::= { sipExtMethodSupportedTable 1 }

   SipExtMethodSupportedEntry ::=
       SEQUENCE {
                sipExtMethodSupportedIndex     Unsigned32,
                sipExtMethodName               SnmpAdminString
       }

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

   sipExtMethodName OBJECT-TYPE
       SYNTAX SnmpAdminString
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
            "This object reflects the supported extension method's name."
       ::= { sipExtMethodSupportedEntry 2 }


   --
   -- SIP Timer Configuration

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   --
   sipCommonCfgTimerTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipCommonCfgTimerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains timer configuration objects applicable
             to SIP user agent and SIP stateful proxy entities."
       ::= { sipCommonCfgTimer 1 }

   sipCommonCfgTimerEntry OBJECT-TYPE
       SYNTAX     SipCommonCfgTimerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of timer configuration.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipCommonCfgTimerTable 1 }

   SipCommonCfgTimerEntry ::=
       SEQUENCE {
                sipCfgTimerA               Unsigned32,
                sipCfgTimerB               Unsigned32,
                sipCfgTimerC               Unsigned32,
                sipCfgTimerD               Unsigned32,
                sipCfgTimerE               Unsigned32,
                sipCfgTimerF               Unsigned32,
                sipCfgTimerG               Unsigned32,
                sipCfgTimerH               Unsigned32,
                sipCfgTimerI               Unsigned32,
                sipCfgTimerJ               Unsigned32,
                sipCfgTimerK               Unsigned32,
                sipCfgTimerT1              Unsigned32,
                sipCfgTimerT2              Unsigned32,
                sipCfgTimerT4              Unsigned32
       }

   sipCfgTimerA OBJECT-TYPE
       SYNTAX      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the 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 will wait to receive a provisional response to
            an INVITE before resending the INVITE request."
       REFERENCE
             "RFC 3261, Section 17.1.1.2"

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       DEFVAL { 500 }
       ::= { sipCommonCfgTimerEntry 1 }

   sipCfgTimerB OBJECT-TYPE
       SYNTAX      Unsigned32 (32000..300000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "This object specifies the maximum time a SIP entity will
            wait to receive a final response to an INVITE.  The
            timer is started upon transmission of the initial INVITE
            request."
       REFERENCE
             "RFC 3261, Section 17.1.1.2"
       DEFVAL { 32000 }
   ::= { sipCommonCfgTimerEntry 2 }

   sipCfgTimerC OBJECT-TYPE
       SYNTAX      Unsigned32 (180000..300000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the maximum time a SIP proxy will
             wait to receive a provisional response to an INVITE.
             The Timer C MUST be set for each client transaction when
             an INVITE request is proxied.  The timer MUST be larger
             than 3 minutes."
       REFERENCE
             "RFC 3261, Section 16.6"
       DEFVAL { 180000 }
       ::= { sipCommonCfgTimerEntry 3 }

   sipCfgTimerD OBJECT-TYPE
       SYNTAX      Unsigned32 (0..300000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the amount of time that the server
             transaction can remain in the 'Completed' state when
             unreliable transports are used. The default value must be
             greater than 32000 for UDP transport and its value must
             be 0 for TCP/SCTP transport."
       REFERENCE
             "RFC 3261, Section 17.1.1.2"
           DEFVAL { 32000 }
       ::= { sipCommonCfgTimerEntry 4 }

   sipCfgTimerE OBJECT-TYPE
       SYNTAX      Unsigned32 (100..1000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "This object specifies the initial value for the retransmit

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            timer for a non-INVITE method while in 'Trying State'.
            The retransmit timer doubles after each retransmission
            until it reaches T2 to ensure an exponential backoff
            in network traffic. This object represents the initial time
            a SIP entity will wait to receive a provisional response to
            the request before resending the non-INVITE request."
       REFERENCE
             "RFC 3261, Section 17.1.2.2"
       DEFVAL { 500 }
       ::= { sipCommonCfgTimerEntry 5 }

   sipCfgTimerF  OBJECT-TYPE
       SYNTAX      Unsigned32 (32000..300000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
           "This object specifies the maximum time a SIP entity will
            wait to receive a final response to a non-INVITE request.
            The timer is started upon transmission of the
            initial request."
       REFERENCE
             "RFC 3261, Section 17.1.2.2"
       DEFVAL { 32000 }
       ::= { sipCommonCfgTimerEntry 6 }

   sipCfgTimerG  OBJECT-TYPE
       SYNTAX      Unsigned32 (0..1000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the initial value for the retransmit
            timer for final responses to INVITE requests.
            If timer G fires, the response is passed to the transport
            layer once more for retransmission, and timer G is set
            to fire in MIN(2*T1, T2) seconds.  From then on, when
            timer G fires, the response is passed to the transport
            again for transmission, and timer G is reset with a value
            that doubles, unless that value exceeds T2, in which case
            it is reset with the value of T2.
            The default value must be T1 for UDP transport and its value
            must be 0 for reliable transport like TCP/SCTP."
       REFERENCE
             "RFC 3261, Section 17.2.1"
       DEFVAL { 500 }
       ::= { sipCommonCfgTimerEntry 7 }

   sipCfgTimerH  OBJECT-TYPE
       SYNTAX      Unsigned32 (32000..300000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the maximum time a server will wait
            to receive an ACK before it abandons retransmitting the
            response. The timer is started upon entering the

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            'Completed' state."
       REFERENCE
             "RFC 3261, Section 17.2.1"
       DEFVAL { 32000 }
       ::= { sipCommonCfgTimerEntry 8 }

      sipCfgTimerI  OBJECT-TYPE
       SYNTAX      Unsigned32 (0..10000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the maximum time a SIP entity will
            wait to receive additional ACK message retransmissions.
            The timer is started upon entering the 'Confirmed' state.
            The default value must be T4 for UDP transport and its value
            must be 0 for reliable transport like TCP/SCTP."
       REFERENCE
             "RFC 3261, Section 17.2.1"
       DEFVAL { 5000 }
       ::= { sipCommonCfgTimerEntry 9 }


      sipCfgTimerJ  OBJECT-TYPE
       SYNTAX      Unsigned32 (32000..300000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the maximum time a SIP server will
            wait to receive retransmissions of non-INVITE request.
            The timer is started upon entering the 'Completed' state
            for non-INVITE transactions. When timer J fires, the server
            must transition to the 'Terminated' state."
       REFERENCE "RFC 3261, Section 17.2.2"
       DEFVAL { 32000 }
       ::= { sipCommonCfgTimerEntry 10 }

      sipCfgTimerK  OBJECT-TYPE
       SYNTAX      Unsigned32 (0..10000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the maximum time a SIP client will
            wait to receive retransmissions of responses to non-INVITE
            requests.
            The timer is started upon entering the 'Completed' state
            for non-INVITE transactions. When timer K fires, the server
            must transition to the 'Terminated' state.
            The default value must be T4 for UDP transport and its value
            must be 0 for reliable transport like TCP/SCTP."
       REFERENCE
             "RFC 3261, Section 17.1.2.2"
       DEFVAL { 5000 }
       ::= { sipCommonCfgTimerEntry 11 }


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   sipCfgTimerT1  OBJECT-TYPE
       SYNTAX      Unsigned32 (200..10000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the T1 timer for a SIP entity. T1
            is an estimate of the round-trip time (RTT) between the
            client and server transactions."
       REFERENCE "RFC 3261, Section 17"
       DEFVAL { 500 }
       ::= { sipCommonCfgTimerEntry 12 }


   sipCfgTimerT2  OBJECT-TYPE
       SYNTAX      Unsigned32 (200..10000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the T2 timer for a SIP entity."
       REFERENCE "RFC 3261, Section 17"
       DEFVAL { 4000 }
       ::= { sipCommonCfgTimerEntry 13 }


   sipCfgTimerT4  OBJECT-TYPE
       SYNTAX      Unsigned32 (200..10000)
       UNITS       "milliseconds"
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object specifies the T4 timer for a SIP entity."
       REFERENCE "RFC 3261, Section 17"
       DEFVAL { 5000 }
       ::= { sipCommonCfgTimerEntry 14 }


   --
   -- Initial Timers Extensions: support for extension methods
   --
   sipCommonCfgTimerExtMethodTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipCommonCfgTimerExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains retransmit timers for each SIP
             extension method this entity supports.

             The applicable T2 timer value for timers configured
             in this table is that of the sipCfgTimerT2 object
             with the same applIndex value."
       ::= { sipCommonCfgTimer 2 }

   sipCommonCfgTimerExtMethodEntry  OBJECT-TYPE
       SYNTAX      SipCommonCfgTimerExtMethodEntry

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       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains timer value information for
             a particular extension method.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipCfgTimerExtMethodIndex }
       ::= { sipCommonCfgTimerExtMethodTable 1 }

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



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

   sipCfgTimerExtMethodName OBJECT-TYPE
       SYNTAX      SnmpAdminString
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object contains the name of the particular extension
             method the SIP entity supports.  For example, it may
             contain the string 'REFER' if the  REFER method is supported."
       ::= { sipCommonCfgTimerExtMethodEntry 2 }

   sipCfgTimerExtMethodTimer OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "milliseconds"
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object specifies the time a SIP 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."
       ::= { sipCommonCfgTimerExtMethodEntry 3 }

  sipCfgTimerExtMethodStatus OBJECT-TYPE

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       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.
             A value for sipCfgTimerExtMethodName and
             sipCfgTimerExtMethodTimer must be set
             for row creation to be successful.  If that method
             already exists for a particular applIndex, the row
             create operation will fail."
       ::= { sipCommonCfgTimerExtMethodEntry 4 }


   --
   -- SIP Retry Configuration
   --

   sipCommonCfgRetryTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipCommonCfgRetryEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains retry configuration objects applicable
             to SIP user agent and SIP proxies."
       ::= { sipCommonCfgRetry 1 }

   sipCommonCfgRetryEntry OBJECT-TYPE
       SYNTAX     SipCommonCfgRetryEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of retry configuration.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipCommonCfgRetryTable 1 }

   SipCommonCfgRetryEntry ::=
       SEQUENCE {
                sipCfgRetryInvite            Unsigned32,
                sipCfgRetryBye               Unsigned32,
                sipCfgRetryCancel            Unsigned32,
                sipCfgRetryRegister          Unsigned32,
                sipCfgRetryOptions           Unsigned32,
                sipCfgRetryInfo              Unsigned32,
                sipCfgRetryFinalResponse     Unsigned32,
                sipCfgRetryNonFinalResponse  Unsigned32
       }

   sipCfgRetryInvite OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write

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       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a SIP entity
             will retry sending an INVITE request."
       REFERENCE "Section 10.5 RFC 2543"
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 1 }

   sipCfgRetryBye OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a SIP entity
             will retry sending a BYE request."
       REFERENCE "Section 10.4 RFC 2543"
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 2 }

   sipCfgRetryCancel OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a SIP entity
             will retry sending a CANCEL request."
       REFERENCE "Section 10.4 RFC 2543"
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 3 }

   sipCfgRetryRegister OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a SIP entity
             will retry sending a REGISTER request."
       REFERENCE "Section 10.4 RFC 2543"
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 4 }

   sipCfgRetryOptions OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a SIP entity
             will retry sending an OPTIONS request."
       REFERENCE "Section 10.4 RFC2543"
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 5 }

   sipCfgRetryInfo OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION

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            "This object will specify the number of times a SIP entity
             will retry sending an INFO request."
       REFERENCE "Section 2.4 RFC 2976"
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 6 }

   sipCfgRetryFinalResponse OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a SIP entity
             will retry sending a final response and expecting an ACK."
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 7 }

   sipCfgRetryNonFinalResponse OBJECT-TYPE
       SYNTAX      Unsigned32 (1..10)
       MAX-ACCESS  read-write
       STATUS      current
       DESCRIPTION
            "This object will specify the number of times a SIP entity
             will retry sending a non-final response."
       DEFVAL { 6 }
       ::= { sipCommonCfgRetryEntry 8 }


   --
   -- Retry Extensions: support for extension methods
   --
   sipCommonCfgRetryExtMethodTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipCommonCfgRetryExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains retry configuration for each SIP
             extension method this entity supports."
       ::= { sipCommonCfgRetry 2 }

   sipCommonCfgRetryExtMethodEntry  OBJECT-TYPE
       SYNTAX      SipCommonCfgRetryExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains retry configuration information for
             a particular extension method.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipCfgRetryExtMethodIndex }
       ::= { sipCommonCfgRetryExtMethodTable 1 }

   SipCommonCfgRetryExtMethodEntry ::=
       SEQUENCE {

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          sipCfgRetryExtMethodIndex      Unsigned32,
          sipCfgRetryExtMethodName       SnmpAdminString,
          sipCfgRetryExtMethodRetry      Unsigned32,
          sipCfgRetryExtMethodStatus     RowStatus
       }

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

   sipCfgRetryExtMethodName OBJECT-TYPE
       SYNTAX      SnmpAdminString
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object contains the name of the particular extension
             method the SIP entity supports.  For example, it may
             contain the string 'REFER' if the  REFER method is supported."
       ::= { sipCommonCfgRetryExtMethodEntry 2 }

   sipCfgRetryExtMethodRetry OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object specifies the number of times a SIP entity
             will retry sending its request for this particular
             extension method."
       ::= { sipCommonCfgRetryExtMethodEntry 3 }

   sipCfgRetryExtMethodStatus 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.
             A value for sipCfgRetryExtMethodName and
             sipCfgRetryExtMethodRetry must be set
             for row creation to be successful.  If that method
             already exists for a particular applIndex, the row
             create operation will fail."
       ::= { sipCommonCfgRetryExtMethodEntry 4 }


   --
   -- Per Method Expires Configuration
   --
   sipCommonCfgExpiresMethodTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipCommonCfgExpiresMethodEntry
       MAX-ACCESS not-accessible
       STATUS     current

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       DESCRIPTION
            "This table contains Expires header value configuration
             objects applicable to SIP user agent and SIP stateful
             proxy entities."
       ::= { sipCommonCfgExpires 1 }

   sipCommonCfgExpiresMethodEntry OBJECT-TYPE
       SYNTAX     SipCommonCfgExpiresMethodEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of Expires header configuration for SIP Methods.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipCommonCfgExpiresMethodTable 1 }

   SipCommonCfgExpiresMethodEntry ::=
       SEQUENCE {
                sipCfgExpiresInvite       Unsigned32,
                sipCfgExpiresRegister     Unsigned32,
                sipCfgExpiresHeaderMethod BITS
       }

   sipCfgExpiresInvite OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       UNITS      "seconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "For user agent clients, this value is inserted into the
             Expires header.
             For proxy servers, if a received request contained an
             Expires header, then the value in the header takes
             precedence."
       ::= { sipCommonCfgExpiresMethodEntry 1 }

   sipCfgExpiresRegister OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       UNITS      "seconds"
       MAX-ACCESS read-write
       STATUS     current
       DESCRIPTION
            "For user agent clients, this value is inserted into the
             Expires header.
             For registrar servers, if a received request contained an
             Expires header, then the value in the header takes
             precedence."
       ::= { sipCommonCfgExpiresMethodEntry 2 }

   sipCfgExpiresHeaderMethod OBJECT-TYPE
       SYNTAX     BITS {
                        invite(0),

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                        register(1)
       }
       MAX-ACCESS read-write
       STATUS current
       DESCRIPTION
            "This convention is a bit map. Each bit represents a
             SIP method where the Expires header should be included.
             If a bit has value 1, then the requests corresponding
             to that SIP method must include an Expires header line.
             If a bit has value 0, then the Expires header line will
             not be added.

             Combinations of bits can be set when the Expires header
             line is required in multiple SIP methods.

                  bit 0   : INVITE method.
                  bit 1   : REGISTER Method."
       ::= { sipCommonCfgExpiresMethodEntry 3 }

   sipCommonCfgExpiresStatusCodeTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipCommonCfgExpiresStatusCodeEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the Expires header configuration
             objects for the SIP responses."
       ::= { sipCommonCfgExpires 2 }

   sipCommonCfgExpiresStatusCodeEntry OBJECT-TYPE
       SYNTAX      SipCommonCfgExpiresStatusCodeEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains information on the configuration of
             the Expires header value for a particular SIP status
             code. Examples of SIP responses that may include an
             Expires header are 302 and 504.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipCfgExpiresStatusCodeValue }
       ::= { sipCommonCfgExpiresStatusCodeTable 1 }

   SipCommonCfgExpiresStatusCodeEntry ::=
       SEQUENCE {
                sipCfgExpiresStatusCodeValue   INTEGER,
                sipCfgExpiresHeaderValue       Unsigned32,
                sipCfgExpiresStatusCodeStatus  RowStatus
        }

   sipCfgExpiresStatusCodeValue OBJECT-TYPE
       SYNTAX      INTEGER (100..999)
       MAX-ACCESS  not-accessible
       STATUS      current

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       DESCRIPTION
            "This object contains a SIP status code value for which
             the Expires header value is configured. All of the other
             information in the row is related to this value."
       ::= { sipCommonCfgExpiresStatusCodeEntry 1 }

   sipCfgExpiresHeaderValue OBJECT-TYPE
       SYNTAX     Unsigned32 (0..4294967295)
       UNITS      "seconds"
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This value is inserted into the Expires header for the
             specific status code."


       ::= { sipCommonCfgExpiresStatusCodeEntry 2 }

   sipCfgExpiresStatusCodeStatus OBJECT-TYPE
       SYNTAX      RowStatus
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object is required to create or delete rows remotely
             by a manager.

             A value for sipCfgExpiresHeaderValue must be specified when
             creating rows by setting this row status to 'createAndGo'.
             The row will automatically transition to 'active'.

             The configuration specified by an entry will be made
             active when this object is set to 'active'."
       ::= { sipCommonCfgExpiresStatusCodeEntry 3 }


   --
   -- Common Statistics Objects
   --

   --
   -- Summary Statistics
   --
   sipSummaryStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipSummaryStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the summary statistics objects
             applicable to all SIP entities.  Each row represents
             those objects for a particular SIP entity present in
             this system."
       ::= { sipCommonStatsSummary 1 }

   sipSummaryStatsEntry OBJECT-TYPE
       SYNTAX     SipSummaryStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current

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       DESCRIPTION
            "A row of summary statistics.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipSummaryStatsTable 1 }

   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 indicates the total number of SIP request
             messages received by the SIP entity including
             retransmissions."
       ::= { sipSummaryStatsEntry 1 }

   sipSummaryOutRequests OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the total number of SIP request
             messages sent out (originated and relayed) by the SIP
             entity.  Where a particular message is sent more than
             once, for example as a retransmission, or as a result of
             forking, each transmission is counted separately."
       ::= { sipSummaryStatsEntry 2 }

   sipSummaryInResponses OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the total number of SIP response
             messages received by the SIP entity including
             retransmissions."
       ::= { sipSummaryStatsEntry 3 }

   sipSummaryOutResponses OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION

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            "This object contains the total number of SIP response
             messages sent (originated and relayed) by the SIP entity
             including retransmissions."
       ::= { sipSummaryStatsEntry 4 }

   sipSummaryTotalTransactions OBJECT-TYPE
       SYNTAX Counter32
       MAX-ACCESS read-only
       STATUS current
       DESCRIPTION
            "This object contains a count of the number of transactions
             that are in progress and transactions that have reached the
             terminated state.  It is not applicable to stateless
             SIP proxy servers.

             A SIP transaction occurs between a client and a server and
             comprises all messages from the first request sent from
             the client to the server up to a final (non-1xx) response
             sent from the server to the client.

             If the request is INVITE and the final response is a non-2xx,
             the transaction also include an ACK to the response.  The ACK
             for a 2xx response to an INVITE request is a separate
             transaction.

             The branch ID parameter in the Via header field values
             serves as a transaction identifier.

             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.

             For a transaction stateless proxy, this counter is always 0."
       ::= { sipSummaryStatsEntry 5 }


   --
   -- SIP Method Statistics
   -- Total counts for each SIP method.
   --
   sipMethodStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipMethodStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains the per method statistics objects
             applicable to all SIP entities.  Each row represents
             those objects for a particular SIP entity present in
             this system."
       ::= { sipCommonStatsMethod 1 }

   sipMethodStatsEntry OBJECT-TYPE
       SYNTAX     SipMethodStatsEntry

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       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of per method statistics.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipMethodStatsTable 1 }

   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,
                sipStatsInfoIns            Counter32,
                sipStatsInfoOuts           Counter32
       }

   sipStatsInviteIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of INVITE requests
             received by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 1 }

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

       DESCRIPTION
            "This object reflects the total number of INVITE requests
             sent by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 2 }

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

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       STATUS      current
       DESCRIPTION
            "This object reflects the total number of ACK requests
             received by the SIP entity."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 3 }

   sipStatsAckOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of ACK requests sent
             by the SIP entity."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 4 }

   sipStatsByeIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of BYE requests
             received by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 5 }

   sipStatsByeOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of BYE requests sent
             by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 6 }

   sipStatsCancelIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of CANCEL requests
             received by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 7 }

   sipStatsCancelOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION

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            "This object reflects the total number of CANCEL requests
             sent by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 8 }

   sipStatsOptionsIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of OPTIONS requests
             received by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 9 }

   sipStatsOptionsOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of OPTIONS requests
             sent by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 10 }

   sipStatsRegisterIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of REGISTER requests
             received by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 11 }

   sipStatsRegisterOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of REGISTER requests
             sent by the SIP entity including retransmissions."
       REFERENCE
            "RFC 3261, Section 7.1"
       ::= { sipMethodStatsEntry 12 }

   sipStatsInfoIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of INFO requests
             received by the SIP entity including retransmissions."

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       REFERENCE
            "RFC 2976"
       ::= { sipMethodStatsEntry 13 }

   sipStatsInfoOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of INFO requests
             sent by the SIP entity including retransmissions."
       REFERENCE
            "RFC 2976"
       ::= { sipMethodStatsEntry 14 }


   --
   -- support for extension methods
   --

   sipStatsExtMethodTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipStatsExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains the list of extension methods which
             each SIP entity in this system has been requested to
             monitor."
       ::= { sipCommonStatsMethod 2 }

   sipStatsExtMethodEntry OBJECT-TYPE
       SYNTAX      SipStatsExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains information on a particular extension
             method that the SIP entity has been requested to monitor.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipStatsExtMethodIndex }
       ::= { sipStatsExtMethodTable 1 }

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

   sipStatsExtMethodIndex OBJECT-TYPE
       SYNTAX      Unsigned32 (1..4294967295)

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       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This object uniquely identifies a conceptual row in the
             table."
       ::= { sipStatsExtMethodEntry 1 }

   sipStatsExtMethodName OBJECT-TYPE
       SYNTAX      SnmpAdminString
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object contains the name of the particular extension
             method that the SIP entity has been requested to monitor.
             For example, it may contain the string 'REFER' if the
             network management station has requested that the SIP
             entity count the number of messages sent an received
             which containing a REFER  method."
       ::= { sipStatsExtMethodEntry 2 }

   sipStatsExtMethodIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of requests received
             by the SIP entity which requested the method contained in
             the sipStatsExtMethodName column including retransmissions
             if appropriate for the method."
       ::= { sipStatsExtMethodEntry 3 }

   sipStatsExtMethodOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of requests sent
             by the SIP entity which requested the method contained in
             the sipStatsExtMethodName column including retransmissions
             if appropriate for the method."
       ::= { 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 a manager.

             If set to 'notInService', all counters will cease to
             increment and retain their last known value.
             If subsequently set to 'active' the counters will begin
             to increment again."
       ::= { sipStatsExtMethodEntry 5 }



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   --
   -- SIP Response Status Codes
   --
   sipStatusCodesTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipStatusCodesEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains statistics on response status code
             classes for each SIP entity in this system."
       ::= { sipCommonStatusCode 1 }

   sipStatusCodesEntry OBJECT-TYPE
       SYNTAX      SipStatusCodesEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains statistics on response status codes.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipStatusCodesTable 1 }

   SipStatusCodesEntry ::=
       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,
                sipStatsOtherClassesIns       Counter32,
                sipStatsOtherClassesOuts      Counter32
       }

   sipStatsInfoClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       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
             a SIP request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.1"

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       ::= { sipStatusCodesEntry 1 }

   sipStatsInfoClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 1xx class
             SIP responses sent by the SIP entity.
             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"
       ::= { sipStatusCodesEntry 2 }

   sipStatsSuccessClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 2xx class SIP
             responses received by the SIP entity. This class of
             responses relate to successful completion of a SIP
             request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.2"
       ::= { sipStatusCodesEntry 3 }

   sipStatsSuccessClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 2xx class SIP
             responses sent by the SIP entity. This class of
             responses relate to successful completion of a SIP
             request."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.2"
       ::= { sipStatusCodesEntry 4 }

   sipStatsRedirClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 3xx class SIP
             responses received by the SIP entity."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.3"
       ::= { sipStatusCodesEntry 5 }

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

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       DESCRIPTION
            "This object reflects the number of 3xx class SIP
             responses sent by the SIP entity."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.3"
       ::= { sipStatusCodesEntry 6 }

   sipStatsReqFailClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 4xx class SIP
             responses 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"
       ::= { sipStatusCodesEntry 7 }

   sipStatsReqFailClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 4xx class SIP
             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"
       ::= { sipStatusCodesEntry 8 }

   sipStatsServerFailClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 5xx class SIP
             responses received by the SIP entity. This class of
             responses reflect failure responses received by a
             SIP entity providing a client function."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.5"
       ::= { sipStatusCodesEntry 9 }

   sipStatsServerFailClassOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 5xx class SIP
             responses sent by the SIP entity. This class of
             responses reflect failure responses sent by a SIP
             entity providing a server function."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.5"

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       ::= { sipStatusCodesEntry 10 }

   sipStatsGlobalFailClassIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of 6xx class SIP
             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."
       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."
       REFERENCE
            "RFC 2543, Sections 5.1.1 & 7.6"
       ::= { sipStatusCodesEntry 12 }

   sipStatsOtherClassesIns OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of SIP responses
             received by the SIP entity for status code response
             classes other than 1xx, 2xx, 3xx, 4xx, 5xx, or 6xx."
       ::= { sipStatusCodesEntry 13 }

   sipStatsOtherClassesOuts OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the number of SIP responses
             sent by the SIP entity for status code response
             classes other than 1xx, 2xx, 3xx, 4xx, 5xx, or 6xx."
       ::= { sipStatusCodesEntry 14 }

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   --
   -- 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."
       ::= { sipCommonStatusCode 2 }

   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.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       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."

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       ::= { 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
             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

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             been requested to monitor."
       AUGMENTS { sipCommonStatusCodeEntry }
       ::= { sipCommonStatusCodeNotifTable 1 }

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

   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
             is sent.  If it is 'false', no notification is sent.
             Note well, that a notification may be emitted for
             every message 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

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                         will be emitted.  It will be the next
                         SIP response messages sent or received
                         that contains the desired status code.

                         No more notifications 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
       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      Unsigned32
       UNITS       "seconds"
       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 { 60 }
       ::= { 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.  The header name will be part of

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             this object value.
             For example, 'To: Watson ."
       ::= { 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.  The header name will be part of
             this object value.
             For example, 'From: Watson '."
       ::= { 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.  The header name will be part of
             this object value.
             For example, 'Call-ID: 5551212@information.com'."
       ::= { sipCommonStatusCode 6 }

   sipStatusCodeNotifCSeq     OBJECT-TYPE
       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.
             The header name will be part of this object value.
             For example, 'CSeq: 1722 INVITE'."
       ::= { 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.

             This table does not apply to transaction stateless
             proxy servers."
       ::= { sipCommonStatsTrans 1 }

   sipCurrentTransEntry OBJECT-TYPE

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       SYNTAX     SipCurrentTransEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Information on a particular SIP entity's current
             transactions.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       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
             currently being processed (the count of such transactions
             is maintained in the sipCurrentTransactions object) by a
             particular SIP entity in this system.

             This table does not apply to transaction stateless
             proxy servers."
       ::= { sipCommonStatsTrans 2 }

   sipTransactionEntry OBJECT-TYPE
       SYNTAX     SipTransactionEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "Information on a particular current transaction.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the

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             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipTransIndex }
       ::= { sipTransactionTable 1 }



   SipTransactionEntry ::=
       SEQUENCE {
                sipTransIndex                         Unsigned32,
                sipTransTo                            SnmpAdminString,
                sipTransFrom                          SnmpAdminString,
                sipTransCallId                        SnmpAdminString,
                sipTransCSeq                          Unsigned32,
                sipTransState                         INTEGER,
                sipTransNumOutstandingBranches        Integer32,
                sipTransExpiry                        DateAndTime,
                sipTransMethod                        SnmpAdminString,
                sipTransActivityInfo                  SnmpAdminString,
                sipTransBranchID                      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.  The header name will be part of this object value.
             For example, 'To: Watson ."
       ::= { 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.  The header name will be part of this
             object value.
             For example, 'From: Watson '."
       ::= { sipTransactionEntry 3 }

   sipTransCallId OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the value of the CallId value in the

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             request message.  The header name will be part of this
             object value.
             For example, 'Call-ID: 5551212@information.com'."
       ::= { sipTransactionEntry 4 }

   sipTransCSeq OBJECT-TYPE
       SYNTAX     Unsigned32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the CSeq value for the current
             transaction.  The header name will be part of this
             object value. For example, 'CSeq: 1722 INVITE'."
       ::= { 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.  Note that some of the object values
             may only be applicable to some transaction types
             (for example, INVITE and non-INVITE transaction
             states differ).

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

   sipTransNumOutstandingBranches OBJECT-TYPE

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       SYNTAX     Integer32 (0..255)
       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 }

   sipTransMethod OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object reflects the SIP method which initiated
             the transaction."
       ::= { sipTransactionEntry 9 }

   sipTransActivityInfo OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains an informational string about the
             latest activity on this transaction.  The string is made
             up of 2 elements separated by a space character: the first
             element indicates the direction of the latest message
             (received or sent) and the second element is the SIP request
             name or SIP response code.
             Examples of valid strings are:
                sent 100
                received INVITE
                sent BYE
                received 200"
       ::= { sipTransactionEntry 10 }

   sipTransBranchID OBJECT-TYPE
       SYNTAX     SnmpAdminString
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "This object contains the value of the branch parameter
            in the top Via header of the current transaction. This value
            uniquely identifies a transaction. The parameter name will
            be part of this object value.

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             For example, 'branch=z9hG4bK77ef4c2312983.1"
       ::= { sipTransactionEntry 11 }


   --
   -- SIP 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.
   --
   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."
       ::= { sipCommonStatsRetry 1 }

   sipCommonStatsRetryEntry OBJECT-TYPE
       SYNTAX     SipCommonStatsRetryEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of retry statistics.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipCommonStatsRetryTable 1 }

   SipCommonStatsRetryEntry ::=
       SEQUENCE {
                sipStatsRetryInvites           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
            "This object reflects the total number of INVITE retries
             that have been sent by the SIP entity.   If the number of
             'first attempt' INVITES is of interest, subtract the value
             of this object from sipStatsInviteOuts."
       ::= { sipCommonStatsRetryEntry 1 }

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   sipStatsRetryByes OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of BYE retries that
             have been sent by the SIP entity. If the number of
             'first attempt' BYEs is of interest, subtract the value
             of this object from sipStatsByeOuts."
       ::= { sipCommonStatsRetryEntry 2 }

   sipStatsRetryCancels OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of CANCEL retries
             that have been sent by the SIP entity. If the number of
             'first attempt' CANCELs is of interest, subtract the value
             of this object from sipStatsCancelOuts."
       ::= { sipCommonStatsRetryEntry 3 }

   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 SIP entity.  If the number of
             'first attempt' REGISTERSs is of interest, subtract the value
             of this object from sipStatsRegisterOuts."
       ::= { sipCommonStatsRetryEntry 4 }

   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 entity.   If the number of
             'first attempt' OPTIONS is of interest, subtract the value
             of this object from sipStatsOptionsOuts."
       ::= { sipCommonStatsRetryEntry 5 }

   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."
       ::= { sipCommonStatsRetryEntry 6 }

   sipStatsRetryFinalResponses OBJECT-TYPE

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       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of Final Response
             retries that have been sent by the SIP entity."
       ::= { sipCommonStatsRetryEntry 7 }

   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."
       ::= { sipCommonStatsRetryEntry 8 }


   --
   -- Retry Extensions Stats: support for extension methods
   --
   sipCommonStatsRetryExtMethodTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipCommonStatsRetryExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This table contains retry statistics for each SIP
             extension method this entity supports."
       ::= { sipCommonStatsRetry 2 }

   sipCommonStatsRetryExtMethodEntry  OBJECT-TYPE
       SYNTAX      SipCommonStatsRetryExtMethodEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
            "This row contains retry statistics for
             a particular extension method.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex, sipStatsRetryExtMethodIndex }
       ::= { sipCommonStatsRetryExtMethodTable 1 }

   SipCommonStatsRetryExtMethodEntry ::=
       SEQUENCE {
          sipStatsRetryExtMethodIndex      Unsigned32,
          sipStatsRetryExtMethodName       SnmpAdminString,
          sipStatsRetryExtMethodRetries    Counter32,
          sipStatsRetryExtMethodStatus     RowStatus
       }

   sipStatsRetryExtMethodIndex OBJECT-TYPE
       SYNTAX      Unsigned32 (1..4294967295)
       MAX-ACCESS  not-accessible

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       STATUS      current
       DESCRIPTION
            "This object uniquely identifies a conceptual row in the
             table."
       ::= { sipCommonStatsRetryExtMethodEntry 1 }

   sipStatsRetryExtMethodName OBJECT-TYPE
       SYNTAX      SnmpAdminString
       MAX-ACCESS  read-create
       STATUS      current
       DESCRIPTION
            "This object contains the 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 error for any of the methods contained
             in RFC 2543 to be requested."
       ::= { sipCommonStatsRetryExtMethodEntry 2 }

   sipStatsRetryExtMethodRetries OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
            "This object reflects the total number of retries
             sent by the SIP entity for a given extension method."
       ::= { sipCommonStatsRetryExtMethodEntry 3 }

   sipStatsRetryExtMethodStatus 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.
             A value for sipStatsRetryExtMethodName must be set
             for row creation to be successful.  If that method
             already exists for a particular applIndex, the row
             create operation will fail."
       ::= { sipCommonStatsRetryExtMethodEntry 4 }

   --
   -- Other Common Statistics
   --
   sipOtherStatsTable OBJECT-TYPE
       SYNTAX     SEQUENCE OF SipOtherStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains other common statistics supported by
             each SIP entity in this system."
       ::= { sipCommonStatsOther 1 }

   sipOtherStatsEntry OBJECT-TYPE
       SYNTAX     SipOtherStatsEntry
       MAX-ACCESS not-accessible
       STATUS     current

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       DESCRIPTION
            "Information on a particular SIP entity's other common
             statistics.

             Each row represents those objects for a particular SIP
             entity present in this system.  applIndex is used to
             uniquely identify these instances of SIP entities and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788)."
       INDEX { applIndex }
       ::= { sipOtherStatsTable 1 }

   SipOtherStatsEntry ::=
       SEQUENCE {
                sipNumUnsupportedUris  Counter32
       }

   sipNumUnsupportedUris OBJECT-TYPE
       SYNTAX     Counter32
       MAX-ACCESS read-only
       STATUS     current
       DESCRIPTION
            "Number of RequestURIs received with unsupported scheme.
             A server normally responds to such requests with a 400 Bad
             Request status code."
       ::= { sipOtherStatsEntry 1 }

   --
   -- Notifications
   --
   sipNotifApplIndex    OBJECT-TYPE
       SYNTAX     INTEGER (1..2147483647)
       MAX-ACCESS accessible-for-notify
       STATUS     current
       DESCRIPTION
            "This object contains the applIndex as described
            in RFC 2788. It is used to bind this notification
            with a specific instance of SIP entity."
       ::= { sipCommonMIBNotifs 1 }

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

   sipStatusCodeThreshExceededNotif NOTIFICATION-TYPE

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       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
             can be used as an early warning mechanism in lieu
             of using sipStatusCodeNotif."
       ::= { sipCommonMIBNotifs 3 }


   --
   -- Conformance
   --
   sipCommonMIBCompliances
     OBJECT IDENTIFIER ::= { sipCommonMIBConform 1 }
   sipCommonMIBGroups
     OBJECT IDENTIFIER ::= { sipCommonMIBConform 2 }

   --
   -- 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."


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       GROUP sipCommonStatsRetryGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any retry statistics.  If implemented,
             the sipCommonConfigRetryGroup  must also be implemented."

       GROUP sipCommonStatsRetryExtMethodsGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any extension method retry statistics.
             If implemented, the 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
             sipCommonStatusCodeNotifGroup must also be implemented."

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

       GROUP sipCommonConfigExpiresGroup
       DESCRIPTION
            "This group is optional.  A SIP entity can elect to
             not provide any Expires header configuration."

       ::= { sipCommonMIBCompliances 1 }

   --
   -- Units of Conformance
   --
   sipCommonConfigGroup OBJECT-GROUP
       OBJECTS {
               sipProtocolVersion,
               sipServiceOperStatus,
               sipServiceAdminStatus,
               sipServiceStartTime,
               sipServiceLastChange,
               sipTransportRcv,
               sipTransportSnd,
               sipPortStatus,
               sipUriSupported,
               sipFtrSupported,
               sipExtMethodName,
               sipOrganization,
               sipMaxSessions,
               sipRequestUriHostMatching
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing configuration common
             to all SIP enities."
       ::= { sipCommonMIBGroups 1 }

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   sipCommonConfigTimerGroup OBJECT-GROUP
       OBJECTS {
               sipCfgTimerA,
               sipCfgTimerB,
               sipCfgTimerC,
               sipCfgTimerD,
               sipCfgTimerE,
               sipCfgTimerF,
               sipCfgTimerG,
               sipCfgTimerH,
               sipCfgTimerI,
               sipCfgTimerJ,
               sipCfgTimerK,
               sipCfgTimerT1,
               sipCfgTimerT2,
               sipCfgTimerT4
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing timer configuration
             common to all SIP enities."
       ::= { sipCommonMIBGroups 2 }

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

   sipCommonConfigRetryGroup OBJECT-GROUP
       OBJECTS {
               sipCfgRetryInvite,
               sipCfgRetryBye,
               sipCfgRetryCancel,
               sipCfgRetryRegister,
               sipCfgRetryOptions,
               sipCfgRetryInfo,
               sipCfgRetryFinalResponse,
               sipCfgRetryNonFinalResponse
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing retry configuration
             common to all SIP enities."
       ::= { sipCommonMIBGroups 4 }

   sipCommonConfigRetryExtMethodGroup OBJECT-GROUP
       OBJECTS {
               sipCfgRetryExtMethodName,
               sipCfgRetryExtMethodRetry,

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               sipCfgRetryExtMethodStatus
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing extension method retry
             configuration."
       ::= { sipCommonMIBGroups 5 }

   sipCommonStatsGroup OBJECT-GROUP
       OBJECTS {
               sipSummaryInRequests,
               sipSummaryOutRequests,
               sipSummaryInResponses,
               sipSummaryOutResponses,
               sipSummaryTotalTransactions,
               sipStatsInviteIns,
               sipStatsInviteOuts,
               sipStatsAckIns,
               sipStatsAckOuts,
               sipStatsByeIns,
               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,
               sipStatsOtherClassesIns,
               sipStatsOtherClassesOuts,
               sipCommonStatusCodeIns,
               sipCommonStatusCodeOuts,
               sipCommonStatusCodeStatus,
               sipCurrentTransactions,
               sipTransTo,
               sipTransFrom,
               sipTransCallId,
               sipTransCSeq,
               sipTransState,
               sipTransNumOutstandingBranches,

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               sipTransExpiry,
               sipTransMethod,
               sipTransActivityInfo,
               sipTransBranchID,
               sipNumUnsupportedUris
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing statistics common
             to all SIP entities."
       ::= { sipCommonMIBGroups 6 }

   sipCommonStatsRetryGroup OBJECT-GROUP
       OBJECTS {
                sipStatsRetryInvites,
                sipStatsRetryByes,
                sipStatsRetryCancels,
                sipStatsRetryRegisters,
                sipStatsRetryOptions,
                sipStatsRetryInfos,
                sipStatsRetryFinalResponses,
                sipStatsRetryNonFinalResponses
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing retry statistics."
       ::= { sipCommonMIBGroups 7 }

   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 {
               sipCommonStatusCodeNotifSend,
               sipCommonStatusCodeNotifEmitMode,
               sipCommonStatusCodeNotifThresh,
               sipCommonStatusCodeNotifInterval,
               sipStatusCodeNotifTo,

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               sipStatusCodeNotifFrom,
               sipStatusCodeNotifCallId,
               sipStatusCodeNotifCSeq,
               sipNotifApplIndex
      }
       STATUS  current
       DESCRIPTION
            "A collection of objects related to controlling and attribution
             of notifications common to all SIP entities."
       ::= { sipCommonMIBGroups 10 }

   sipCommonConfigExpiresGroup OBJECT-GROUP
       OBJECTS {
                sipCfgExpiresInvite,
                sipCfgExpiresRegister,
                sipCfgExpiresHeaderMethod,
                sipCfgExpiresHeaderValue,
                sipCfgExpiresStatusCodeStatus
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing configuration
             related to Expires header."
       ::= { sipCommonMIBGroups 11 }

   END


5.3. SIP User Agent

   SIP-UA-MIB DEFINITIONS ::= BEGIN

   IMPORTS
        MODULE-IDENTITY,
        OBJECT-TYPE,
        Unsigned32,
        mib-2
             FROM SNMPv2-SMI

        MODULE-COMPLIANCE,
        OBJECT-GROUP
             FROM SNMPv2-CONF

        RowStatus
             FROM SNMPv2-TC

        applIndex
             FROM NETWORK-SERVICES-MIB

        InetAddressType,
        InetAddress
             FROM INET-ADDRESS-MIB;


   sipUAMIB MODULE-IDENTITY
        LAST-UPDATED   "200302250000Z"
        ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"

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        CONTACT-INFO
                "SIP MIB email: sip@ietf.org

                 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
                            ipDialog, Inc.
                 postal:    7701 N. Lamar Blvd., Suite 304
                            Austin, TX 78752-1023
                            USA
                 email:     jmaeng@ipdialog.com
                 phone:     +1 512 371 1770

                 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
                            CableLabs
                 postal:    400 Centennial Parkway
                            Louisville, CO 80027
                            USA
                 email:     jf.mule@cablelabs.com
                 phone:     +1 303 661 3708  "
        DESCRIPTION
             "Session Initiation Protocol (SIP) 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).

              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.

              Copyright (C) The Internet Society (2003). This version
              of this MIB module is part of RFC XXXX; see the RFC
              itself for full legal notices."

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        REVISION        "200302250000Z"
        DESCRIPTION
             "Initial version of the IETF SIP-UA-MIB module.
              This version published as part of RFC XXXX."
        ::= { mib-2 xx }  -- xx to be assigned by IANA


   -- Top-Level Components of this MIB.
   sipUAMIBObjects       OBJECT IDENTIFIER ::= { sipUAMIB 1 }
   sipUAMIBConform       OBJECT IDENTIFIER ::= { sipUAMIB 2 }

   --
   -- This MIB contains objects related to SIP User Agents.
   --
   sipUACfgSipServer     OBJECT IDENTIFIER ::= { sipUAMIBObjects 1 }

   --
   -- SIP Server Configuration
   --
   sipUACfgSipServerTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SipUACfgSipServerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "This table contains SIP server configuration objects
             applicable to each SIP user agent in this system."
       ::= { sipUACfgSipServer 1 }



   sipUACfgSipServerEntry OBJECT-TYPE
       SYNTAX     SipUACfgSipServerEntry
       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A row of server configuration.

             Each row represents those objects for a particular SIP
             user agent present in this system.  applIndex is used to
             uniquely identify these instances of SIP user agents and
             correlate them through the common framework of the
             NETWORK-SERVICES-MIB (RFC 2788). The same value of
             applIndex used in the corresponding SIP-COMMON-MIB is
             used here."
       INDEX { applIndex, sipUACfgSipServerAddrIndex }
       ::= { sipUACfgSipServerTable 1 }

   SipUACfgSipServerEntry ::=
       SEQUENCE {
                sipUACfgSipServerAddrIndex   Unsigned32,
                sipUACfgSipServerAddrType    InetAddressType,
                sipUACfgSipServerAddr        InetAddress,
                sipUACfgSipServerAddrStatus  RowStatus
       }

   sipUACfgSipServerAddrIndex OBJECT-TYPE
       SYNTAX     Unsigned32

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       MAX-ACCESS not-accessible
       STATUS     current
       DESCRIPTION
            "A unique identifier of a server address when
             multiple addresses are configured by the SIP entity.
             If one address isn't reachable, then another can
             be tried."
       ::= { sipUACfgSipServerEntry 1 }

   sipUACfgSipServerAddrType OBJECT-TYPE
       SYNTAX     InetAddressType
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object specifies the type of address contained
             in the associated instance of sipUACfgSipServerAddr."
       REFERENCE "INET-ADDRESS-MIB (RFC 3291)"
       DEFVAL { ipv4 }
       ::= { sipUACfgSipServerEntry 2 }

   sipUACfgSipServerAddr OBJECT-TYPE
       SYNTAX     InetAddress
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object specifies the address of a SIP server
             this user agent will use to proxy/redirect calls."
       ::= { sipUACfgSipServerEntry 3 }

   sipUACfgSipServerAddrStatus OBJECT-TYPE
       SYNTAX     RowStatus
       MAX-ACCESS read-create
       STATUS     current
       DESCRIPTION
            "This object is used to control rows in this table.

             'active'        : the row's information is completely
                               populated and that information is
                               being used by the user agent.

             'notInService'  : the row's address is not being used
                               by the user agent, but will remain in
                               the table.

             'notReady'      : key information is missing thus,
                               preventing the row from being made
                               'active' (eg, no address specified).

             'createAndGo'   : only allowed if the manager also
                               provides 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

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                               removed from the table."
       ::= { sipUACfgSipServerEntry 4 }

   --
   -- Conformance
   --
   sipUAMIBCompliances
     OBJECT IDENTIFIER ::= { sipUAMIBConform 1 }
   sipUAMIBGroups
     OBJECT IDENTIFIER ::= { sipUAMIBConform 2 }

   --
   -- Compliance Statements
   --
   sipUACompliance MODULE-COMPLIANCE
       STATUS     current
       DESCRIPTION
            "The compliance statement for SIP entities."
       MODULE -- this module
            MANDATORY-GROUPS { sipUAConfigGroup }
       ::= { sipUAMIBCompliances 1 }

   --
   -- Units of Conformance
   --
   sipUAConfigGroup OBJECT-GROUP
       OBJECTS {
               sipUACfgSipServerAddrType,
               sipUACfgSipServerAddr,
               sipUACfgSipServerAddrStatus
       }
       STATUS  current
       DESCRIPTION
            "A collection of objects providing configuration for
             SIP User Agents."
       ::= { sipUAMIBGroups 1 }

   END

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

      SIP-SERVER-MIB DEFINITIONS ::= BEGIN

      IMPORTS
           MODULE-IDENTITY,
           OBJECT-TYPE,
           Counter32,
           Integer32,
           Unsigned32,
           Gauge32,
           mib-2
                FROM SNMPv2-SMI

           RowStatus,
           TruthValue,
           TimeStamp, DateAndTime

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                FROM SNMPv2-TC

           MODULE-COMPLIANCE,
           OBJECT-GROUP
                FROM SNMPv2-CONF

           SnmpAdminString
                FROM SNMP-FRAMEWORK-MIB

           applIndex
                FROM NETWORK-SERVICES-MIB

           InetAddressType,
           InetAddress
                FROM INET-ADDRESS-MIB;

      sipServerMIB MODULE-IDENTITY
           LAST-UPDATED   "200302250000Z"
           ORGANIZATION   "IETF SIP Working Group, SIP MIB Team"
           CONTACT-INFO
                   "SIP MIB email: sip@ietf.org

                    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
                               ipDialog, Inc.
                    postal:    7701 N. Lamar Blvd., Suite 304
                               Austin, TX 78752-1023
                               USA
                    email:     jmaeng@ipdialog.com
                    phone:     +1 512 371 1770

                    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
                               CableLabs
                    postal:    400 Centennial Parkway
                               Louisville, CO 80027
                               USA
                    email:     jf.mule@cablelabs.com
                    phone:     +1 303 661 3708  "

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           DESCRIPTION
                "Session Initiation Protocol (SIP) Server MIB module.

                 SIP is an application-layer signaling 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,
                 Redirect, and Registrar Servers.

                 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 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.

                 Copyright (C) The Internet Society (2003). This
   version
                 of this MIB module is part of RFC XXXX; see the RFC
                 itself for full legal notices."
           REVISION        "200302250000Z"
           DESCRIPTION
                "Initial version of the IETF SIP-SERVER-MIB module.
                 This version published as part of RFC XXXX."
           ::= { mib-2 xx }  -- xx to be assigned by IANA


      -- Top-Level Components of this MIB.
      sipServerMIBObjects  OBJECT IDENTIFIER ::= { sipServerMIB 1 }
      sipServerMIBConform  OBJECT IDENTIFIER ::= { sipServerMIB 2 }

      --
      -- These groups contains objects common to all SIP servers.
      --
      sipServerCfg         OBJECT IDENTIFIER ::= { sipServerMIBObjects
   1 }
      sipServerStats       OBJECT IDENTIFIER ::= { sipServerMIBObjects
   2 }

      --
      -- Common Server Configuration Objects
      --
      sipServerCfgTable OBJECT-TYPE
          SYNTAX     SEQUENCE OF SipServerCfgEntry

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          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "This table contains configuration objects applicable
                to SIP redirect and proxy servers."
          ::= { sipServerCfg 1 }

      sipServerCfgEntry OBJECT-TYPE
          SYNTAX     SipServerCfgEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "A row of common configuration.

                Each row represents those objects for a particular SIP
                server present in this system.  applIndex is used to
                uniquely identify these instances of SIP servers and
                correlate them through the common framework of the
                NETWORK-SERVICES-MIB (RFC 2788). The same value of
                applIndex used in the corresponding SIP-COMMON-MIB
                is used here."
          INDEX { applIndex }
          ::= { sipServerCfgTable 1 }

      SipServerCfgEntry ::=
          SEQUENCE {
                   sipServerHostAddrType           InetAddressType,
                   sipServerHostAddr               InetAddress,
                   sipPgpVersion                   SnmpAdminString,
                   sipServerContactDfltAction      INTEGER,
                   sipServerRespectUAAction        TruthValue
          }

      sipServerHostAddrType OBJECT-TYPE
          SYNTAX     InetAddressType
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "The type of Internet address by which the SIP server
                is reachable."
          REFERENCE
                "RFC 2543, Section 2"
          ::= { sipServerCfgEntry 1 }

      sipServerHostAddr OBJECT-TYPE
          SYNTAX     InetAddress (SIZE(1..254))
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This is the host portion of a SIP URL that is assigned
                to the SIP server.  It may contain a fully qualified
                domain name, or an IP address.  The length of the value
                will depend on the type of address specified.
                sipServerHostAddrType formalizes the type of address

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                given by this object.  It is the users responsibility
                to maintain consistency between this object and the
                type specified by sipServerHostAddrType."
          REFERENCE
                "RFC 2543, Section 2"
          ::= { sipServerCfgEntry 2 }

      --
      -- 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 3 }

      --
      -- Additional Server Configuration
      --
      sipServerContactDfltAction OBJECT-TYPE
          SYNTAX     INTEGER {
                             redirect(1),
                             proxy(2)
                     }
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies whether the default contact
   action
                of the server is to be a proxy 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"
          ::= { sipServerCfgEntry 4 }

      sipServerRespectUAAction OBJECT-TYPE
          SYNTAX     TruthValue
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies whether the server should respect
                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

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                the value contained in the sipServerContactDfltAction
                is used."
          REFERENCE
                "RFC 2543, Section 6.13"
          ::= { sipServerCfgEntry 5 }

      --
      -- This group contains MIB objects related to SIP Proxy Servers.
      --
      sipProxyCfg      OBJECT IDENTIFIER ::= { sipServerMIBObjects 3 }
      sipProxyStats    OBJECT IDENTIFIER ::= { sipServerMIBObjects 4 }

      --
      -- Proxy Server Configuration
      --
      sipProxyCfgTable OBJECT-TYPE
          SYNTAX     SEQUENCE OF SipProxyCfgEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "This table contains configuration objects applicable
                to SIP proxy servers."
          ::= { sipProxyCfg 1 }

      sipProxyCfgEntry OBJECT-TYPE
          SYNTAX     SipProxyCfgEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "A row of common proxy configuration.

                Each row represents those objects for a particular SIP
                server present in this system.  applIndex is used to
                uniquely identify these instances of SIP servers and
                correlate them through the common framework of the
                NETWORK-SERVICES-MIB (RFC 2788).  The same value of
                applIndex used in the corresponding SIP-COMMON-MIB
                is used here."
          INDEX { applIndex }
          ::= { sipProxyCfgTable 1 }

      SipProxyCfgEntry ::=
          SEQUENCE {
                   sipRequestMaxExpires         Unsigned32,
                   sipProxyStatefulness         INTEGER,
                   sipProxySendsCancel          TruthValue,
                   sipProxyForwardAll1xx        TruthValue,
                   sipProxyRecursion            TruthValue,
                   sipProxyProvideAlternatives  TruthValue,
                   sipProxyRecordRoute          TruthValue,
                   sipProxyStateTimeout         Integer32,
                   sipProxyAuthMethod           BITS,
                   sipProxyAuthPgpAlgorithm     INTEGER,
                   sipProxyAuthRealm            SnmpAdminString,

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                   sipProxyNonceLifeTime        Integer32,
                   sipPgpPrivateKey             OCTET STRING
          }

      sipRequestMaxExpires OBJECT-TYPE
          SYNTAX     Unsigned32 (0..4294967295)
          UNITS      "seconds"
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies the maximum duration that a SIP
                proxy server will accept from a client in the Expires
                header."
          ::= { sipProxyCfgEntry 1 }

      sipProxyStatefulness OBJECT-TYPE
          SYNTAX     INTEGER {
                              stateless(1),
                              transactionStateful(2),
                              callStateful(3)
                      }
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies the default mode of operation for
                the proxy server entity.

                A stateless proxy entity does not maintain state
                for a SIP transaction. A stateless proxy forwards every
                request it receives downstream and every response it
                receives upstream.   If the value of this object is
                stateless(1), the proxy defaults to stateless
   operations.

                A transaction stateful proxy, or simply a 'stateful
                proxy', maintains state information for the duration of
                a SIP transaction.  If the value if this object is
                transactionStateful(2), the proxy is stateful on a
                transaction basis.

                A call stateful proxy does retain state that persists
                for the duration of a call initiated through it. To
                properly manage that state, the proxy will normally
                need to receive the BYE requests that terminate the
   call.
                If the value of this object is callStateful(3), the
                proxy is call stateful."
          REFERENCE
                "RFC 2543, Section 12.3"
          ::= { sipProxyCfgEntry 2 }

      sipProxySendsCancel OBJECT-TYPE
          SYNTAX     TruthValue
          MAX-ACCESS read-write

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          STATUS     current
          DESCRIPTION
               "This object specifies whether or not a forking proxy
   sends
                CANCEL on outstanding branch requests after receiving a
                2xx or 6xx, or after the request times-out.

                If the value of this object is 'true', the server sends
                a CANCELs on branches where no definitive response has
   been
                received.  If 'false', the proxy 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 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 is 'true', the 1xx
   responses
                are sent.  If the value is 'false', duplicate 1xx
                responses are not sent upstream."
          ::= { sipProxyCfgEntry 4 }

      sipProxyRecursion OBJECT-TYPE
          SYNTAX     TruthValue
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies whether or not the 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."
          ::= { sipProxyCfgEntry 5 }

      sipProxyProvideAlternatives OBJECT-TYPE
          SYNTAX     TruthValue
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION

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               "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
                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 to 3xx and 485 responses.

                Note that the policies of a server may limit the
                particular alternatives that are returned when this
   object
                is set to 'true'."
          REFERENCE
                "RFC 2543, Section 6.13"
          DEFVAL { false }
          ::= { sipProxyCfgEntry 6 }

      sipProxyRecordRoute OBJECT-TYPE
          SYNTAX     TruthValue
          MAX-ACCESS read-write
          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 signaling path for subsequent requests related to
   the
                call-leg.

                If the value of this object is 'true', the proxy adds
   itself
                to the end 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"
          ::= { sipProxyCfgEntry 7 }

      sipProxyStateTimeout OBJECT-TYPE
          SYNTAX     Integer32 (0..255)
          UNITS      "seconds"
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies the duration after reception of
   the

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                first INVITE 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 }

      --
      -- Security
      --
      sipProxyAuthMethod OBJECT-TYPE
          SYNTAX     BITS {
                             none(0),
                             basic(1),
                             digest(2),
                             pgp(3)
                     }
          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies the authentication method that is
                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."
          ::= { sipProxyCfgEntry 9 }

      sipProxyAuthPgpAlgorithm OBJECT-TYPE
          SYNTAX     INTEGER {
                             other(1),
                             md5(2),
                             sha1(3)
                     }
          MAX-ACCESS read-write

          STATUS     current
          DESCRIPTION
               "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 }

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      sipProxyNonceLifeTime OBJECT-TYPE
          SYNTAX Integer32 (0..65535)
          UNITS "milliseconds"
          MAX-ACCESS read-write
          STATUS current
          DESCRIPTION
               "This object specifies the life-time of a given nonce.
   A
                nonce is a server specified value whose contents are
                opaque to the entity being authenticated and which is
   used
                in calculating authentication data.  If this object has
   a
                value of zero, then
                nonces are not reused."
          ::= { sipProxyCfgEntry 12 }

      --
      -- Proxy-Authenticate received by this 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 }

      --
      -- Proxy Server Statistics
      --
      sipProxyStatsTable OBJECT-TYPE
          SYNTAX     SEQUENCE OF SipProxyStatsEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "This table contains the statistics objects applicable
                to all SIP Proxy Servers in this system."
          ::= { sipProxyStats 1 }

      sipProxyStatsEntry OBJECT-TYPE
          SYNTAX     SipProxyStatsEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "A row of summary statistics.

                Each row represents those objects for a particular SIP

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                server present in this system.  applIndex is used to
                uniquely identify these instances of SIP servers and
                correlate them through the common framework of the
                NETWORK-SERVICES-MIB (RFC 2788).  The same value of
                applIndex used in the corresponding SIP-COMMON-MIB
                is used here."
          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 }

      --
      -- This group contains MIB objects related to SIP Redirect
   Servers.
      --
      sipRedirCfg       OBJECT IDENTIFIER ::= { sipServerMIBObjects 5 }
      sipRedirStats     OBJECT IDENTIFIER ::= { sipServerMIBObjects 6 }

      -- none at this time

      --
      -- This group contains MIB objects related to SIP Registrars.
      --
      sipRegCfg         OBJECT IDENTIFIER ::= { sipServerMIBObjects 7 }
      sipRegStats       OBJECT IDENTIFIER ::= { sipServerMIBObjects 8 }

      --
      -- Registrar Configuration
      --
      sipRegCfgTable OBJECT-TYPE
          SYNTAX     SEQUENCE OF SipRegCfgEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "This table contains configuration objects applicable
                SIP registrars."
          ::= { sipRegCfg 1 }

      sipRegCfgEntry OBJECT-TYPE

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          SYNTAX     SipRegCfgEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "A row of common registrar configuration.

                Each row represents those objects for a particular SIP
                server present in this system.  applIndex is used to
                uniquely identify these instances of SIP servers and
                correlate them through the common framework of the
                NETWORK-SERVICES-MIB (RFC 2788). The same value of
                applIndex used in the corresponding SIP-COMMON-MIB
                is used here."
          INDEX { applIndex }
          ::= { sipRegCfgTable 1 }

      SipRegCfgEntry ::=
          SEQUENCE {
                   sipRegAllowThirdParty           TruthValue,
                   sipRegMaxContactExpiryDate      Unsigned32,
                   sipRegMaxUsers                  Unsigned32,
                   sipRegCurrentUsers              Gauge32,
                   sipRegDfltRegActiveInterval     Unsigned32
          }

      sipRegAllowThirdParty OBJECT-TYPE
          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 requester."
          REFERENCE
               "RFC 2543, Section 4.2.6"
          ::= { sipRegCfgEntry 1 }

      sipRegMaxContactExpiryDate OBJECT-TYPE
          SYNTAX     Unsigned32 (0..4294967295)
          UNITS      "seconds"

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          MAX-ACCESS read-write
          STATUS     current
          DESCRIPTION
               "This object specifies the maximum expiry that may be
                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 2 }

      sipRegMaxUsers OBJECT-TYPE
          SYNTAX     Unsigned32 (1..4294967295)
          MAX-ACCESS read-only
          STATUS     current
          DESCRIPTION
               "This object specifies the maximum number of users that
   the
                registrar supports.  The current number of users is
                reflected by sipRegCurrentUsers."
          ::= { sipRegCfgEntry 3 }

      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 4 }

      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.  If a Contact
                entry does not have an 'expires' parameter, this
                object is used as the default value."
          REFERENCE "Expires header, section 6.20 RFC2543"
          ::= { sipRegCfgEntry 5 }

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      --
      -- 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."
          ::= { 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.

                Each row represents those objects for a particular SIP
                server present in this system.  applIndex is used to
                uniquely identify these instances of SIP servers and
                correlate them through the common framework of the
                NETWORK-SERVICES-MIB (RFC 2788).  The same value of
                applIndex used in the corresponding SIP-COMMON-MIB
                is used here."
          INDEX { applIndex, sipUserIndex }
          ::= { sipRegUserTable 1 }

      SipRegUserEntry ::=
          SEQUENCE {
                   sipUserIndex                         Unsigned32,
                   sipUserUri
   SnmpAdminString,
                   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 }

      sipUserUri OBJECT-TYPE
          SYNTAX     SnmpAdminString
          MAX-ACCESS read-create
          STATUS     current

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          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 }

      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 3 }

      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 4 }

      --
      -- 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
   to
                each SIP Registrar in this system)."
          ::= { sipRegCfg 3 }

      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.

                Each row represents those objects for a particular SIP

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                server present in this system.  applIndex is used to
                uniquely identify these instances of SIP servers and
                correlate them through the common framework of the
                NETWORK-SERVICES-MIB (RFC 2788).  The same value of
                applIndex used in the corresponding SIP-COMMON-MIB
                is used here."
          INDEX { applIndex, sipUserIndex, sipContactIndex }
          ::= { sipContactTable 1 }

      SipContactEntry ::=
          SEQUENCE {
                   sipContactIndex                Unsigned32,
                   sipContactDisplayName          SnmpAdminString,
                   sipContactURI                  SnmpAdminString,
                   sipContactLastUpdated          TimeStamp,
                   sipContactExpiry               DateAndTime,
                   sipContactPreference           SnmpAdminString,
                   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

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                a proxy."
          ::= { 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

                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     SnmpAdminString
          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     INTEGER {
                             redirect(1),
                             proxy(2)

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                     }
          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
          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 }


      --
      -- Registrar Statistics
      --
      sipRegStatsTable OBJECT-TYPE
          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."
          ::= { sipRegStats 1 }

      sipRegStatsEntry OBJECT-TYPE
          SYNTAX     SipRegStatsEntry
          MAX-ACCESS not-accessible
          STATUS     current
          DESCRIPTION
               "A row of summary statistics.

                Each row represents those objects for a particular SIP
                server present in this system.  applIndex is used to
                uniquely identify these instances of SIP servers and
                correlate them through the common framework of the
                NETWORK-SERVICES-MIB (RFC 2788).  The same value of

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                applIndex used in the corresponding SIP-COMMON-MIB
                is used here."
          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 }


      --
      -- Conformance
      --
      sipServerMIBCompliances
        OBJECT IDENTIFIER ::= { sipServerMIBConform 1 }
      sipServerMIBGroups
        OBJECT IDENTIFIER ::= { sipServerMIBConform 2 }

      --
      -- Compliance Statements
      --
      sipProxyServerCompliance MODULE-COMPLIANCE
          STATUS     current
          DESCRIPTION
               "The compliance statement for SIP entities acting
                as proxy servers."
          MODULE -- this module
               MANDATORY-GROUPS { sipServerConfigGroup,
                                  sipProxyConfigGroup,
                                  sipProxyStatsGroup }

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          ::= { sipServerMIBCompliances 1 }

      sipRedirectServerCompliance MODULE-COMPLIANCE
          STATUS     current
          DESCRIPTION
               "The compliance statement for SIP entities acting
                as redirect servers."
          MODULE -- this module
               MANDATORY-GROUPS { sipServerConfigGroup }
          ::= { sipServerMIBCompliances 2 }

      sipRegistrarServerCompliance MODULE-COMPLIANCE
          STATUS     current
          DESCRIPTION
               "The compliance statement for SIP entities acting
                as registrars."
          MODULE -- this module
               MANDATORY-GROUPS { sipServerConfigGroup,
                                  sipRegistrarConfigGroup,
                                  sipRegistrarStatsGroup }
          ::= { sipServerMIBCompliances 3 }

      --
      -- Units of Conformance
      --
      sipServerConfigGroup OBJECT-GROUP
          OBJECTS {
                  sipServerHostAddrType,
                  sipServerHostAddr,
                  sipPgpVersion,
                  sipServerContactDfltAction,
                  sipServerRespectUAAction
          }
          STATUS  current
          DESCRIPTION
               "A collection of objects providing configuration common
                to SIP Proxy and Redirect servers."
          ::= { sipServerMIBGroups 1 }

      sipProxyConfigGroup OBJECT-GROUP
          OBJECTS {
                  sipRequestMaxExpires,
                  sipProxyStatefulness,
                  sipProxySendsCancel,
                  sipProxyForwardAll1xx,
                  sipProxyRecursion,
                  sipProxyProvideAlternatives,
                  sipProxyRecordRoute,
                  sipProxyStateTimeout,
                  sipProxyAuthMethod,
                  sipProxyAuthPgpAlgorithm,
                  sipProxyAuthRealm,
                  sipProxyNonceLifeTime,
                  sipPgpPrivateKey

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          }
          STATUS  current
          DESCRIPTION
               "A collection of objects providing configuration for
                SIP Proxy servers."
          ::= { sipServerMIBGroups 2 }

      sipProxyStatsGroup OBJECT-GROUP
          OBJECTS {
                  sipNumProxyRequireFailures
          }
          STATUS  current
          DESCRIPTION
               "A collection of objects providing statistics for
                SIP Proxy servers."
          ::= { sipServerMIBGroups 3 }

      sipRegistrarConfigGroup OBJECT-GROUP
          OBJECTS {
                  sipRegAllowThirdParty,
                  sipRegMaxContactExpiryDate,
                  sipRegMaxUsers,
                  sipRegCurrentUsers,
                  sipRegDfltRegActiveInterval,
                  sipUserUri,
                  sipUserAuthenticationFailures,
                  sipUserTableRowStatus,
                  sipContactDisplayName,
                  sipContactURI,
                  sipContactLastUpdated,
                  sipContactExpiry,
                  sipContactPreference,
                  sipContactAction,
                  sipContactRetryAfter
          }
          STATUS  current
          DESCRIPTION
               "A collection of objects providing configuration for
                SIP Registrars."
          ::= { sipServerMIBGroups 4 }

      sipRegistrarStatsGroup OBJECT-GROUP
          OBJECTS {
                  sipRegAcceptedRegistrations,
                  sipRegRejectedRegistrations
          }
          STATUS  current
          DESCRIPTION
               "A collection of objects providing statistics for
                SIP Registrars."
          ::= { sipServerMIBGroups 5 }

      END


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6. Changes from previous drafts

   o  Changes from draft-ietf-sip-mib-04

   Started realignment with SIP RFC3261.

   o  Changes from draft-ietf-sip-mib-03

   These are the specific draft-ietf-sip-mib-04 changes to the MIB
   modules based on what they looked like for draft-ietf-sip-mib-03.


   Front paper/Back paper
       o Rewrote parts of section 4.2
       o Fixed minor editorial nits

   SIP-COMMON-MIB

   o CONTACT-INFO "SIP MIB email" changed to sip@ietf.org

   o sipInviteTimeout was removed from the MIB.  See below regarding
   new sipCommonCfgExpires objects.  They provide equivalent
   functionality with extensibility beyond INVITE.

   o sipCommonCfgExpires OID subtree added.  Per method Expires
   configuration objects were added there.
   This new high-level OID was placed under the existing
   sipCommonCfgRetry OID and therefore, caused the OIDs for the
   subsequent groups to change (incrementing by one).

   o Objects from tables under sipCommonCfgExpires were added to a new
   OBJECT-GROUP sipCommonConfigExpiresGroup, and that group was listed
   as optional in sipCommonCompliance.

   o Minor DESCRIPTION change for sipCommonCfgEntry.  No behavior
   change.

   o sipServiceOperStatus SYNTAX changed.
     New values added: congested & quiescing
     Old values removed: halted
     The order of the enumeration was altered as well.

   o sipServiceAdminStatus SYNTAX changed.
     New values added: noop, up, down, quieseSessions, and
                       quieseApplications
     Old values removed: shutdown, restart, stop, rts.
     These changes were made based on comments from last call reviewer
   and general known ambiguities in the previous design of the object.

   o Clarifying changes to the DESCRIPTION of sipServiceStartTime.

   o Clarifying changes to the DESCRIPTION of sipOrganization.

   o Clarification of behavior for sipPortStatus while row is

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     'active'.

   o Clarifying changes to the DESCRIPTION of sipUriSupportedTable

   o Clarifying changes to the DESCRIPTIONs of sipFtrSupportedTable,
     sipFtrSupportedEntry, and sipFtrSupported.
     Specifically, IETF standard features and non-standard features are
   now represented by this table.  Only non-standard features were
   mentioned in prior revisions of the draft.

   o Reference to usage of RFC 2788 applIndex moved from
     sipCommonCfgTimerExtMethodTable to
   sipCommonCfgTimerExtMethodEntry.
     This was the convention for other table/entry definitions in
     the MIB, so these objects were previously unconventional.

   o DEFVAL removed from sipCfgTimerExtMethodTimer.  The generic nature
     of the "extension" object does not lend itself to being able to
     specify a particular default value.

   o Since the removal of the DEFVAL clause from
   sipCfgTimerExtMethodTimer,
     a value for that object must be specified when creating a
     sipCommonCfgTimerExtMethodEntry.  The description of
     sipCfgTimerExtMethodStatus was updated to reflect this.

   o sipCommonCfgRetryExtMethodTable is now properly defined under
     sipCommonCfgRetry OID space instead of under sipCommonCfgTimer
     OID space.

   o DEFVAL removed from sipCfgRetryExtMethodRetry.  The generic nature
     of the "extension" object does not lend itself to being able to
     specify a particular default value.

   o Since the removal of the DEFVAL clause from
   sipCfgRetryExtMethodRetry,
     a value for that object must be specified when creating a
     sipCommonCfgRetryExtMethodEntry.  The description of
     sipCfgRetryExtMethodStatus was updated to reflect this.

   o Clarifying changes to the DESCRIPTION of
   sipSummaryTotalTransactions.
     Specifically, the object is not applicable to stateless SIP proxy
     servers and the object should always return a value of 0 if
     implemented by a stateless proxy.

   o Clarifying changes to the DESCRIPTION of sipStatsExtMethodStatus.

   o sipStatsOtherClassesIns and sipStatsOtherClassesOuts counter
     objects were added to sipStatusCodesTable to handle possible
     future classes of response status codes.

   o Text referring specifically to Redirect Server in
     sipStatsRedirClassIns and sipStatsRedirClassOuts was removed.

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   o Text defining protocol behavior in sipStatsServerFailClassIns,
     sipStatsServerFailClassOuts, sipStatsGlobalFailClassIns, and
     sipStatsGlobalFailClassOuts was removed.

   o sipCommonStatusCodeNotifInterval SYNTAX changed from TimeTicks
     to Unsigned32 w/ a UNITS of "seconds" added to the definition.
     DEFVAL clause changed accordingly.

   o sipStatusCodeNotifTo, sipStatusCodeNotifFrom,
   sipStatusCodeNotifCallId,
     and sipStatusCodeNotifCSeq all had clarifying changes to their
     DESCRIPTIONs.  Specifically, the header name will be part of the
     object value and example values were given.

   o Clarifying changes to the DESCRIPTION of sipCurrentTransTable
     and sipTransactionTable.  Specifically, these tables are not
     applicable to transaction stateless SIP proxy servers.

   o Minor gramatical change to the DESCRIPTION of
   sipCurrentTransEntry.

   o sipTransMethod and sipTransActivityInfo objects were added to
     sipTransactionTable while sipTransCallingPartyContentType and
     sipTransCalledPartyContentType were removed.

   o Clarifying changes to the DESCRIPTION of sipTransState.
     Specifically, noting that not all values of the object
     are applicable to all transaction types.

   o sipTransTo, sipTransFrom, sipTransCallId, and sipTransCSeq
     all had clarifying changes to their DESCRIPTIONs.
     Specifically, the header name will be part of the object
     value and example values were given.

   o Minor gramatical change to the DESCRIPTION of sipOtherStatsEntry.

   o sipCommonStatusCodeIns and sipCommonStatusCodeOuts objects were
     added to the varbind of sipStatusCodeNotif.

   o Appropriate changes were made to sipCommonStatsGroup OBJECT-GROUP
     based on objects being added and/or removed from the MIB.



   SIP-SERVER-MIB

   o CONTACT-INFO "SIP MIB email" changed to sip@ietf.org

   o The statement "Unlike a Proxy server it does not initiate
     requests." was removed from where a Redirect Server is
     defined in the MIB's DESCRIPTION.

   o sipServerMIBNotifs OID removed. No notifications were

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     ever defined under this subtree.

   o Clarifying text added to all of the Table DESCRIPTIONS
     stating that the value of applIndex used in this MIB
     corresponds to the value of applIndex used in the
     SIP-COMMON-MIB.

   o Clarifying changes to the DESCRIPTION of sipProxyStatefulness.

   o sipContactPreference SYNTAX changed from OCTET STRING to
     SnmpAdminString.


   SIP-UA-MIB

   o CONTACT-INFO "SIP MIB email" changed to sip@ietf.org

   o sipUAMIBNotifs OID removed. No notifications were
     ever defined under this subtree.

   o sipUAStats OID removed. No notifications were
     ever defined under this subtree.

   o Clarifying text added to all of the Table DESCRIPTIONS
     stating that the value of applIndex used in this MIB
     corresponds to the value of applIndex used in the
     SIP-COMMON-MIB.


   SIP-TC

   o CONTACT-INFO "SIP MIB email" changed to sip@ietf.org






   o  Changes from draft-ietf-sip-mib-02

   The following changes were made based on review comments to the
   previous version of the draft.

   In general
       o Eliminated the SIP-MIB-SMI modules.  Each MIB module will now
         get it's own IANA OID.
       o Top-level OID subtrees restructured in each MIB.
       o General cleanup/removal of "placeholder" OID subtrees
         for object groups and notifications that never materialized.

   Regarding SIP-COMMON-MIB
       o Removed sipCfgInitialTimerAck.
       o Removed sipCfgRetryAck.
       o Removed sipStatsRetryAcks.

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       o sipCommonStatsRetryExtMethodEntry was missing its INDEX
         clause.
       o sipNumUnsupportedUris OID was "5" when it was the
         only object in the table.  OID is now "1".
       o High-level OID structure of the MIB is now sequential.
       o Incorrect object descriptor for sipCfgInitialTimerRsp
         inconsistent with reference in compliance section.
       o Inconsistencies between sipCommonStatsRetryGroup definition
         and SipCommonStatsRetryEntry OBJECT-TYPE corrected.
       o sipNotifApplIndex was not in any object group in the
         conformance section.

   Regarding SIP-SERVER-MIB
       o Removed sipInformationTryingInterval.
       o Removed sipRxProxyAuthTable.
       o Removed sipRegRespHasContacts.
       o Removed sipRegContactDfltExpiryDate.
       o Removed sipRegContactDfltExpiryDuration.
       o Removed sipUserPassword.
       o sipRequestMaxExpires DESCRIPTION changed to no
         longer specifically mention 400 response.
       o sipProxyStateful object descriptor changed to
         sipProxyStatefullness and the SYNTAX changed
         from TruthValue to an enumerated INTEGER.
       o sipProxyStateTimeout DESCRIPTION changed to now reflect only
         INVITE.
       o Gauge32 was not being IMPORTed.
       o sipServerContactDfltAction showed up in conformance
         and other object descriptions in an older form.
       o sipServerHost replaced with InetAddressType/InetAddress
         object pair (sipServerHostAddrType & sipServerHostAddr).

   Regarding SIP-UA-MIB
       o IMPORTed Unsigned32 to support sipUACfgSipServerAddrIndex.
       o sipUACfgSipServerEntry was referencing the wrong
         auxilliary object and listing that object in the conformance
         section.
       o sipUACfgSipServerEntry listed sipUACfgSipServerStatus
         when it should have been listing sipUACfgSipServerAddrStatus.
       o SIP-UA-MIB IMPORTed Counter32, but never used it.
         Removed the IMPORT of Counter32.

7. 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
   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


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   SIP 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 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), 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 [RFC2574] and the View-
   based Access Control Model RFC 2575 [RFC2575] 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.

8. 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.

9. Full Copyright Statement

   Copyright (C) The Internet Society (2003).  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

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   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.





































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10.     Normative References

   [RFC2026] Bradner, S., "The Internet Standards Process -                                                          - Revision
             3", BCP 9, RFC 2026, October 1996.

   [RFC2578] 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.

   [RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
             Rose, M. and S. Waldbusser, "Textual Conventions for
             SMIv2", STD 58, RFC 2579, April 1999.

   [RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
             Rose, M. and S. Waldbusser, "Conformance Statements for
             SMIv2", STD 58, RFC 2580, April 1999.

   [1]   Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, A.,
         Peterson, J., Sparks, R., Handley, M. and E. Schooler, "SIP:
         Session Initiation Protocol", RFC 3261, June 2002.

   [2]   Freed, N. and S. Kille, "Network Services Monitor MIB",
         RFC 2788, March 2000

   [3]   Donavan, S., "The SIP INFO Method", RFC 2976, October 2000


11.     Informative References

   [RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart,
             "Introduction and Applicability Statements for Internet-
             Standard Management Framework", RFC 3410, December 2002.

   [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
             Requirement Levels", BCP 14, RFC 2119, March 1997.

12.     Acknowledgments

We wish to thank the members of the IETF SIP & SIPPING WGs & the SIP-
MIB Design team for their comments and suggestions. Detailed comments
were provided by Tom Taylor and Kavitha Patchayappan.


13. Author's Addresses

   Kevin Lingle
   Cisco Systems, Inc.
   7025 Kit Creek Road
   P.O. Box 14987
   Research Triangle Park, NC 27709
   USA
   email: klingle@cisco.com

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   phone: +1 919 392 2029

   Joon Maeng
   ipDialog, Inc.
   7701 N. Lamar Blvd., Suite 304
   Austin, TX 78752-1023
   USA
   email: jmaeng@ipdialog.com
   phone: +1 512 371 1770

   Jean-Francois MuleƆ
   CableLabs
   400 Centennial Parkway
   Louisville, CO 80027
   USA
   email: jfm@cablelabs.com
          mibs@cablelabs.com
   phone: +1 303 661 9100

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





























   Lingle/Maeng/Mule/Walker                                  [Page 97]


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