draft-ietf-sipping-config-framework-01.txt   draft-ietf-sipping-config-framework-02.txt 
SIPPING D. Petrie SIPPING D. Petrie
Internet-Draft Pingtel Corp. Internet-Draft Pingtel Corp.
Expires: April 21, 2004 October 22, 2003 Expires: August 14, 2004 February 14, 2004
A Framework for SIP User Agent Profile Delivery A Framework for SIP User Agent Profile Delivery
draft-ietf-sipping-config-framework-01.txt draft-ietf-sipping-config-framework-02.txt
Status of this Memo Status of this Memo
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026. all provisions of Section 10 of RFC2026.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
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material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at http:// The list of current Internet-Drafts can be accessed at http://
www.ietf.org/ietf/1id-abstracts.txt. www.ietf.org/ietf/1id-abstracts.txt.
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This Internet-Draft will expire on April 21, 2004. This Internet-Draft will expire on August 14, 2004.
Copyright Notice Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved. Copyright (C) The Internet Society (2004). All Rights Reserved.
Abstract Abstract
This document defines the application of a set of protocols for This document defines the application of a set of protocols for
providing profile data to SIP user agents. The objective is to providing profile data to SIP user agents. The objective is to
define a means for automatically providing profile data a user agent define a means for automatically providing profile data a user agent
needs to be functional without user or administrative intervention. needs to be functional without user or administrative intervention.
The framework for discovery, delivery, notification and updates of The framework for discovery, delivery, notification and updates of
user agent profile data is defined here. As part of this framework a user agent profile data is defined here. As part of this framework a
new SIP event package is defined here for the notification of profile new SIP event package is defined here for the notification of profile
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agents. The contents and format of the profile data to be defined is agents. The contents and format of the profile data to be defined is
outside the scope of this document. outside the scope of this document.
Table of Contents Table of Contents
1. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Requirements Terminology . . . . . . . . . . . . . . . . . . 3 2.1 Requirements Terminology . . . . . . . . . . . . . . . . . . 3
2.2 Profile Delivery Framework Terminology . . . . . . . . . . . 4 2.2 Profile Delivery Framework Terminology . . . . . . . . . . . 4
2.3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Profile Change Event Notification Package . . . . . . . . . 5 3. Profile Change Event Notification Package . . . . . . . . . 6
3.1 Event Package Name . . . . . . . . . . . . . . . . . . . . . 6 3.1 Event Package Name . . . . . . . . . . . . . . . . . . . . . 6
3.2 Event Package Parameters . . . . . . . . . . . . . . . . . . 6 3.2 Event Package Parameters . . . . . . . . . . . . . . . . . . 6
3.3 SUBSCRIBE Bodies . . . . . . . . . . . . . . . . . . . . . . 7 3.3 SUBSCRIBE Bodies . . . . . . . . . . . . . . . . . . . . . . 8
3.4 Subscription Duration . . . . . . . . . . . . . . . . . . . 7 3.4 Subscription Duration . . . . . . . . . . . . . . . . . . . 8
3.5 NOTIFY Bodies . . . . . . . . . . . . . . . . . . . . . . . 8 3.5 NOTIFY Bodies . . . . . . . . . . . . . . . . . . . . . . . 8
3.6 Notifier processing of SUBSCRIBE requests . . . . . . . . . 8 3.6 Notifier processing of SUBSCRIBE requests . . . . . . . . . 9
3.7 Notifier generation of NOTIFY requests . . . . . . . . . . . 9 3.7 Notifier generation of NOTIFY requests . . . . . . . . . . . 9
3.8 Subscriber processing of NOTIFY requests . . . . . . . . . . 10 3.8 Subscriber processing of NOTIFY requests . . . . . . . . . . 10
3.9 Handling of forked requests . . . . . . . . . . . . . . . . 10 3.9 Handling of forked requests . . . . . . . . . . . . . . . . 10
3.10 Rate of notifications . . . . . . . . . . . . . . . . . . . 10 3.10 Rate of notifications . . . . . . . . . . . . . . . . . . . 11
3.11 State Agents . . . . . . . . . . . . . . . . . . . . . . . . 10 3.11 State Agents . . . . . . . . . . . . . . . . . . . . . . . . 11
3.12 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.12 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.13 Use of URIs to Retrieve State . . . . . . . . . . . . . . . 11 3.13 Use of URIs to Retrieve State . . . . . . . . . . . . . . . 12
4. Profile Delivery Framework Details . . . . . . . . . . . . . 12 4. Profile Delivery Framework Details . . . . . . . . . . . . . 12
4.1 Discovery of Subscription URI . . . . . . . . . . . . . . . 12 4.1 Discovery of Subscription URI . . . . . . . . . . . . . . . 12
4.2 Enrollment with Profile Server . . . . . . . . . . . . . . . 13 4.2 Enrollment with Profile Server . . . . . . . . . . . . . . . 14
4.3 Notification of Profile Changes . . . . . . . . . . . . . . 13 4.3 Notification of Profile Changes . . . . . . . . . . . . . . 14
4.4 Retrieval of Profile Data . . . . . . . . . . . . . . . . . 14 4.4 Retrieval of Profile Data . . . . . . . . . . . . . . . . . 14
4.5 Upload of Profile Changes . . . . . . . . . . . . . . . . . 14 4.5 Upload of Profile Changes . . . . . . . . . . . . . . . . . 15
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . 14 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . 15
6. Security Considerations . . . . . . . . . . . . . . . . . . 14 5.1 SIP Event Package . . . . . . . . . . . . . . . . . . . . . 15
6.1 Symmetric Encryption of Profile Data . . . . . . . . . . . . 14 6. Security Considerations . . . . . . . . . . . . . . . . . . 15
6.2 Client Certificate Authentication with HTTPS . . . . . . . . 15 6.1 Symmetric Encryption of Profile Data . . . . . . . . . . . . 15
6.3 HTTPS Authentication . . . . . . . . . . . . . . . . . . . . 15 7. Differences from Simple XCAP Package . . . . . . . . . . . . 16
7. Differences from Simple XCAP Package . . . . . . . . . . . . 15
8. Open Issues . . . . . . . . . . . . . . . . . . . . . . . . 16 8. Open Issues . . . . . . . . . . . . . . . . . . . . . . . . 16
9. Change History . . . . . . . . . . . . . . . . . . . . . . . 16 9. Change History . . . . . . . . . . . . . . . . . . . . . . . 16
9.1 Changes from draft-ietf-sipping-config-framework-00.txt . . 16 9.1 Changes from draft-ietf-sipping-config-framework-01.txt . . 17
9.2 Changes from draft-petrie-sipping-config-framework-00.txt . 17 9.2 Changes from draft-ietf-sipping-config-framework-00.txt . . 17
9.3 Changes from draft-petrie-sip-config-framework-01.txt . . . 17 9.3 Changes from draft-petrie-sipping-config-framework-00.txt . 17
9.4 Changes from draft-petrie-sip-config-framework-00.txt . . . 17 9.4 Changes from draft-petrie-sip-config-framework-01.txt . . . 18
9.5 Changes from draft-petrie-sip-config-framework-00.txt . . . 18
References . . . . . . . . . . . . . . . . . . . . . . . . . 18 References . . . . . . . . . . . . . . . . . . . . . . . . . 18
Author's Address . . . . . . . . . . . . . . . . . . . . . . 20 Author's Address . . . . . . . . . . . . . . . . . . . . . . 20
A. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . 20 A. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . 20
Intellectual Property and Copyright Statements . . . . . . . 21 Intellectual Property and Copyright Statements . . . . . . . 21
1. Motivation 1. Motivation
Today all SIP user agent vendors use proprietary means of delivering Today all SIP user agent vendors use proprietary means of delivering
user or device profiles to the user agent. The profile delivery user or device profiles to the user agent. The profile delivery
framework defined in this document is intended to enable a first framework defined in this document is intended to enable a first
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"MAY" that appear in this document are to be interpreted as described "MAY" that appear in this document are to be interpreted as described
in RFC 2119[RFC2119]. in RFC 2119[RFC2119].
2.2 Profile Delivery Framework Terminology 2.2 Profile Delivery Framework Terminology
profile - data set specific to a user or device. profile - data set specific to a user or device.
device - SIP user agent, either software or hardware appliance. device - SIP user agent, either software or hardware appliance.
profile content server - The server that provides the content of the profile content server - The server that provides the content of the
profiles using the protocol specified by the URL scheme. profiles using the protocol specified by the URL scheme.
notifier - The SIP user agent server which processes SUBSCRIBE notifier - The SIP user agent server which processes SUBSCRIBE
requests for events and sends NOTIFY requests with profile URL(s). requests for events and sends NOTIFY requests with profile data or
URI(s) point to the data.
profile delivery server - The logical collection of the SIP notifier profile delivery server - The logical collection of the SIP notifier
and the server which provides the contents of the profile URL(s). and the server which provides the contents of the profile URI(s).
2.3 Overview 2.3 Overview
The profile life cycle can be described by five functional steps. The profile life cycle can be described by five functional steps.
These steps are not necessarily discrete. However it is useful to These steps are not necessarily discrete. However it is useful to
describe these steps as logically distinct. These steps are named describe these steps as logically distinct. These steps are named
as follows: as follows:
Discovery - discover a profile delivery server Discovery - discover a profile delivery server
Enrollment - enroll with the profile delivery server Enrollment - enroll with the profile delivery server
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port at which it SHOULD enroll with the profile delivery server. As port at which it SHOULD enroll with the profile delivery server. As
there is no single discovery mechanism which will work in all network there is no single discovery mechanism which will work in all network
environments, a number of discovery mechanisms are defined with a environments, a number of discovery mechanisms are defined with a
prescribed order in which the UA SHOULD try them until one succeeds. prescribed order in which the UA SHOULD try them until one succeeds.
Enrollment is the process by which a UA SHOULD make itself known to Enrollment is the process by which a UA SHOULD make itself known to
the profile delivery server. In enrolling the UA MUST provide the profile delivery server. In enrolling the UA MUST provide
identity information, name requested profile type(s) and supported identity information, name requested profile type(s) and supported
protocols for profile retrieval. It SHOULD also subscribe to a protocols for profile retrieval. It SHOULD also subscribe to a
mechanism for notification of profile changes. As a result of mechanism for notification of profile changes. As a result of
enrollment, the UA receives a URL for each of the profiles that the enrollment, the UA receives the data or the URI for each of the
profile delivery server is able to provide. Each profile type (set) profiles that the profile delivery server is able to provide. Each
requires a separate enrollment or SUBSCRIBE session. profile type (set) requires a separate enrollment or SUBSCRIBE
session.
Profile Retrieval is the process of retrieving the content for each Profile Retrieval is the process of retrieving the content for each
of the profiles the UA requested. of the profiles the UA requested.
Profile Change Notification is the process by which the profile Profile Change Notification is the process by which the profile
delivery server notifies the UA that the content of one or more of delivery server notifies the UA that the content of one or more of
the profiles has changed. Subsequently the UA SHOULD retrieve the the profiles has changed. If the content is provided indirectly the
profile from the specified URL upon receipt of the change UA SHOULD retrieve the profile from the specified URI upon receipt of
notification. the change notification.
Profile Upload is the process by which a UA or other entity (e.g. Profile Upload is the process by which a UA or other entity (e.g.
OSS, corporate directory or configuration management server) pushes a OSS, corporate directory or configuration management server) pushes a
change to the profile data back up to the profile delivery server. change to the profile data back up to the profile delivery server.
This framework defines a new SIP event package [RFC3265] to solve This framework defines a new SIP event package [RFC3265] to solve
enrollment and profile change notification steps. enrollment and profile change notification steps.
The question arises as to why SIP should be used for the profile The question arises as to why SIP should be used for the profile
delivery framework. In this document SIP is used for only a small delivery framework. In this document SIP is used for only a small
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doing so the user agent can replace the previous user's profile data doing so the user agent can replace the previous user's profile data
while still keeping the devices profile data that may be necessary while still keeping the devices profile data that may be necessary
for core functionality and communication described in this document. for core functionality and communication described in this document.
3. Profile Change Event Notification Package 3. Profile Change Event Notification Package
This section defines a new SIP event package [RFC3265]. The purpose This section defines a new SIP event package [RFC3265]. The purpose
of this event package is to send to subscribers notification of of this event package is to send to subscribers notification of
content changes to the profile(s) of interest and to provide the content changes to the profile(s) of interest and to provide the
location of the profile(s) via content indirection location of the profile(s) via content indirection
[I-D.ietf-sip-content-indirect-mech]. [I-D.ietf-sip-content-indirect-mech] or directly in the body of the
NOTIFY. If the profile is large enough to cause packet fragmentation
over the transport protocol, the profile SHOULD use content
indirection. The user agent SHOULD specify the profile delivery
means and format via the MIME type in the Accepts header.
3.1 Event Package Name 3.1 Event Package Name
The name of this package is "sip-profile". This value appears in the The name of this package is "sip-profile". This value appears in the
Event header field present in SUBSCRIBE and NOTIFY requests for this Event header field present in SUBSCRIBE and NOTIFY requests for this
package as defined in [RFC3265]. package as defined in [RFC3265].
3.2 Event Package Parameters 3.2 Event Package Parameters
This package defines the following new parameters for the event This package defines the following new parameters for the event
header: profile-type, vendor, model, version, effective-by. The header: profile-name, vendor, model, version, effective-by. The
effective-by parameter is for use in NOTIFY requests only. The effective-by parameter is for use in NOTIFY requests only. The
others are for use in the SUBSCRIBE request, but may be used in others are for use in the SUBSCRIBE request, but may be used in
NOTIFY requests as well. NOTIFY requests as well.
The profile-type parameter is used to indicate the profile type the The profile-name parameter is used to indicate the token name of the
user agent wishes to obtain URLs for and be notified of change. This profile type the user agent wishes to obtain URIs for or to
parameter allows the URL semantics to be opaque to the subscribing explicitly specify the URI to which it is to be notified of change.
user agent as all it needs to know is the token value for this Using a token in this parameter allows the URL semantics to be opaque
parameter. This document defines two type categories of profiles. to the subscribing user agent. All it needs to know is the token
The contents or format of the profiles is outside the scope of this value for this parameter. However in some cases the user agent may
document. The two types of profiles define here are "user" and know the URI of the profile and only wishes to know about changes to
"device". Specifying device type profile(s) indicates the desire for the profile. The user agent MAY supply the URI for the profile as
the URL(s) and change notification of all profiles that are specific the value of the profile-name parameter. This document defines two
to the device or user agent. Specifying user type profile(s) type categories of profiles and their token names. The contents or
indicates the desire for the URL(s) and change notification of all format of the profiles is outside the scope of this document. The
profile(s) that are specific to the user. The user or device is two types of profiles define here are "user" and "device".
identified in the URI of the SUBSCRIBE request. The Accept header of Specifying device type profile(s) indicates the desire for the URI(s)
the SUBSCRIBE request MUST include the MIME types for all profile and change notification of all profiles that are specific to the
content types that the subscribing user agent wishes to retrieve device or user agent. Specifying user type profile(s) indicates the
profiles or receive change notifications. desire for the URI(s) and change notification of all profile(s) that
are specific to the user. The user or device is identified in the
URI of the SUBSCRIBE request. The Accept header of the SUBSCRIBE
request MUST include the MIME types for all profile content types
that the subscribing user agent wishes to retrieve profiles or
receive change notifications.
The user or device token in the profile-type parameter may The user or device token in the profile-name parameter may
represent a class or set of profiles as opposed to a single represent a class or set of profiles as opposed to a single
profile. As standards are defined for specific profile contents profile. As standards are defined for specific profile contents
related to the user or device, it may be desirable to define related to the user or device, it may be desirable to define
additional tokens for the profile-type header. This is to allow a additional tokens for the profile-name header. This is to allow a
user agent to subscribe to that specific profile as opposed to the user agent to subscribe to that specific profile as opposed to the
entire class or set of user or device profiles. entire class or set of user or device profiles.
The rational for the separation of user and device type profiles is The rational for the separation of user and device type profiles is
provided in section Section 2.3. It should be noted that either type provided in section Section 2.3. It should be noted that either type
may indicate that zero or more URLs are provided in the NOTIFY may indicate that zero or more URIs are provided in the NOTIFY
request. As discussed, a default user may be assigned to a device. request. As discussed, a default user may be assigned to a device.
In this scenario the profile delivery server may provide the URL(s) In this scenario the profile delivery server may provide the URI(s)
in the NOTIFY request for the default user when subscribing to the in the NOTIFY request for the default user when subscribing to the
device profile type. Effectively the device profile type becomes a device profile type. Effectively the device profile type becomes a
superset of the user profile type subscription. The user type is superset of the user profile type subscription. The user type is
still useful in this scenario to allow the user agent to obtain still useful in this scenario to allow the user agent to obtain
profile URLs for a user other than the default user. This provides profile data or URIs for a user other than the default user. This
the ability to support a hoteling function where a user may "login" provides the ability to support a hoteling function where a user may
to any user agent and have it use a users profile(s). "login" to any user agent and have it use a users profile(s).
The vendor, model and version parameters are tokens specified by the The vendor, model and version parameters are tokens specified by the
vendor of the user agent. These parameters are useful to the profile vendor of the user agent. These parameters are useful to the profile
delivery server to effect the profiles provided. In some scenarios delivery server to effect the profiles provided. In some scenarios
it is desirable to provide different profiles based upon these it is desirable to provide different profiles based upon these
parameters. For example feature parameter X in a profile may work parameters. For example feature parameter X in a profile may work
differently on two versions of user agent. This gives the profile differently on two versions of user agent. This gives the profile
deliver server the ability to compensate for or take advantage of the deliver server the ability to compensate for or take advantage of the
differences. differences.
The "effective-by" parameter in the Event header of the NOTIFY The "effective-by" parameter in the Event header of the NOTIFY
specifies the maximum number of seconds before the user agent MUST specifies the maximum number of seconds before the user agent MUST
make the new profile effective. A value of 0 (zero) indicates that make the new profile effective. A value of 0 (zero) indicates that
the user agent MUST make the profiles effective immediately (despite the user agent MUST make the profiles effective immediately (despite
possible service interruptions). This gives the profile delivery possible service interruptions). This gives the profile delivery
server the power to control when the profile is effective. This may server the power to control when the profile is effective. This may
be important to resolve an emergency problem or disable a user agent be important to resolve an emergency problem or disable a user agent
immediately. immediately.
SUBSCRIBE request example: SUBSCRIBE request example:
Event: sip-profile;profile-type=device; Event: sip-profile;profile-name=device;
vendor=acme;model=Z100;version=1.2.3 vendor=acme;model=Z100;version=1.2.3
Event: sip-profile;profile-name=
"http://example.com/services/user-profiles/users/freds.xml";
vendor=premier;model=trs8000;version=5.5
NOTIFY request examples: NOTIFY request examples:
Event:sip-profile;effective-by=0 Event:sip-profile;effective-by=0
Event:sip-profile;effective-by=3600 Event:sip-profile;effective-by=3600
3.3 SUBSCRIBE Bodies 3.3 SUBSCRIBE Bodies
This package defines no new use of the SUBSCRIBE request body. This package defines no new use of the SUBSCRIBE request body.
3.4 Subscription Duration 3.4 Subscription Duration
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As profiles are generally static with infrequent changes, it is As profiles are generally static with infrequent changes, it is
recommended that default subscription duration be 86400 seconds (one recommended that default subscription duration be 86400 seconds (one
day). day).
3.5 NOTIFY Bodies 3.5 NOTIFY Bodies
The size of profile content is likely to be hundreds to several The size of profile content is likely to be hundreds to several
thousand bytes in size. Frequently even with very modest sized SDP thousand bytes in size. Frequently even with very modest sized SDP
bodies, SIP messages get fragmented causing problems for many user bodies, SIP messages get fragmented causing problems for many user
agents. For this reason the NOTIFY body MUST use content indirection agents. For this reason the NOTIFY body MUST use content indirection
[I-D.ietf-sip-content-indirect-mech] for providing the profiles. [I-D.ietf-sip-content-indirect-mech] for providing the profiles if
the Accept header of the SUBSCRIBE included the MIME type: message/
external-body indicating support for content indirection.
The profile delivery server MUST include the Content-ID defined in When delivering profiles via content indirection the profile delivery
server MUST include the Content-ID defined in
[I-D.ietf-sip-content-indirect-mech] for each profile URL. This is [I-D.ietf-sip-content-indirect-mech] for each profile URL. This is
to avoid unnecessary download of the profiles. Some user agents are to avoid unnecessary download of the profiles. Some user agents are
not able to make a profile effective without rebooting or restarting. not able to make a profile effective without rebooting or restarting.
Rebooting is probably something to be avoided on a user agent Rebooting is probably something to be avoided on a user agent
performing services such as telephony. In this way the Content-ID performing services such as telephony. In this way the Content-ID
allows the user agent to avoid unnecessary interruption of service as allows the user agent to avoid unnecessary interruption of service as
well. The Content-Type MUST be specified for each URL. well. The Content-Type MUST be specified for each URI.
Initially it is expected that most user agent vendors will use a Initially it is expected that most user agent vendors will use a
proprietary content type for the profiles retrieved from the proprietary content type for the profiles retrieved from the
URLs(s). It is hoped that over time a standard content type will URIs(s). It is hoped that over time a standard content type will
be specified that will be adopted by vendors of user agents. One be specified that will be adopted by vendors of user agents. One
direction that appears to be promising for this content is to use direction that appears to be promising for this content is to use
XML with name spaces [??] to segment the data into sets that the XML with name spaces [??] to segment the data into sets that the
user agent implementer may choose to support based upon desired user agent implementer may choose to support based upon desired
feature set. The specification of the content is out of the scope feature set. The specification of the content is out of the scope
of this document. of this document.
Likewise the URL scheme used in the content indirection is outside Likewise the URL scheme used in the content indirection is outside
the scope of this document. This document is agnostic to the URL the scope of this document. This document is agnostic to the URL
schemes as the profile content may dictate what is required. It is schemes as the profile content may dictate what is required. It is
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system that integrates with a corporate directory and IT system or system that integrates with a corporate directory and IT system or
carrier OSS, where the profiles are automatically generated. The carrier OSS, where the profiles are automatically generated. The
design of this framework intentionally provides the flexibility of design of this framework intentionally provides the flexibility of
implementation from simple/cheap to complex/expensive. implementation from simple/cheap to complex/expensive.
If the user or device is not known to the profile delivery server, If the user or device is not known to the profile delivery server,
the implementer MAY accept the subscription or reject it. It is the implementer MAY accept the subscription or reject it. It is
recommended that the implementer accept the subscription. It is recommended that the implementer accept the subscription. It is
useful for the profile delivery server to maintain the subscription useful for the profile delivery server to maintain the subscription
as an administrator may add the user or device to the system, as an administrator may add the user or device to the system,
defining the profile contents. This allow the profile delivery defining the profile contents. This allows the profile delivery
server to immediately send a NOTIFY request with the profile URLs. server to immediately send a NOTIFY request with the profile URIs.
If the profile delivery server does not accept the subscription from If the profile delivery server does not accept the subscription from
an unknown user or device, the administer or user must manually an unknown user or device, the administer or user must manually
provoke the user agent to reSUBSCRIBE. This may be difficult if the provoke the user agent to reSUBSCRIBE. This may be difficult if the
user agent and administrator are at different sites. user agent and administrator are at different sites.
3.7 Notifier generation of NOTIFY requests 3.7 Notifier generation of NOTIFY requests
As in [RFC3265], the profile delivery server MUST always send a As in [RFC3265], the profile delivery server MUST always send a
NOTIFY request upon accepting a subscription. If the device or user NOTIFY request upon accepting a subscription. If the device or user
is unknown to the profile delivery server and it chooses to accept is unknown to the profile delivery server and it chooses to accept
the subscription, the implementer has two choices. A NOTIFY MAY be the subscription, the implementer has two choices. A NOTIFY MAY be
sent with no body or content indirection containing the profile sent with no body or content indirection containing the profile
URL(s). Alternatively a NOTIFY MAY be sent with URL(s) pointing to a URI(s). Alternatively a NOTIFY MAY be sent with URI(s) pointing to a
default data set. Typically this data set allows for only limited default data set. Typically this data set allows for only limited
functionality of the user agent (e.g. a phone user agent with data to functionality of the user agent (e.g. a phone user agent with data to
call help desk and emergency services.). This is an implementation call help desk and emergency services.). This is an implementation
and business policy decision. and business policy decision.
A user or device known and fully provisioned on the profile delivery A user or device known and fully provisioned on the profile delivery
server SHOULD send a NOTIFY with content indirection containing URLs server SHOULD send a NOTIFY with profile data or content indirection
for all of the profiles associated with the user or device (i.e. containing URIs for all of the profiles associated with the user or
which ever specified in the profile-type parameter). The device may device (i.e. which ever specified in the profile-name parameter).
be associated with a default user. The URL(s) for this default user The device may be associated with a default user. The URI(s) for
profiles MAY be included with the URL(s) of the device if the profile this default user profiles MAY be included with the URI(s) of the
type specified is device. device if the profile type specified is device.
A user agent can provide Hoteling by collecting a userís AOR and A user agent can provide Hoteling by collecting a userís AOR and
credentials needed to SUBSCRIBE and retrieve the user profiles from credentials needed to SUBSCRIBE and retrieve the user profiles from
the URL(s). Hoteling functionality is achieved by subscribing to the the URI(s). Hoteling functionality is achieved by subscribing to the
AOR and specifying the "user" profile type. This same mechanism can AOR and specifying the "user" profile type. This same mechanism can
be used to secure a user agent, requiring a user to login to enable be used to secure a user agent, requiring a user to login to enable
functionality beyond the default userís restricted functionality. functionality beyond the default userís restricted functionality.
The profile delivery server MAY specify when the new profiles MUST be The profile delivery server MAY specify when the new profiles MUST be
made effective by the user agent. By default the user agent makes made effective by the user agent. By default the user agent makes
the profiles effective as soon as it thinks that it is non-obtrusive. the profiles effective as soon as it thinks that it is non-obtrusive.
However the profile delivery server MAY specify a maximum time in However the profile delivery server MAY specify a maximum time in
seconds (zero or more), in the effective-by event header parameter, seconds (zero or more), in the effective-by event header parameter,
by which the user agent MUST make the new profiles effective. by which the user agent MUST make the new profiles effective.
3.8 Subscriber processing of NOTIFY requests 3.8 Subscriber processing of NOTIFY requests
The user agent subscribing to this event package MUST adhere to the The user agent subscribing to this event package MUST adhere to the
NOTIFY request processing behavior specified in [RFC3265]. The user NOTIFY request processing behavior specified in [RFC3265]. The user
agent MUST make the profiles effective as specified in the NOTIFY agent MUST make the profiles effective as specified in the NOTIFY
request (see section Section 3.7). The user agent SHOULD use one of request (see section Section 3.7). The user agent SHOULD use one of
skipping to change at page 10, line 38 skipping to change at page 11, line 19
this reason no throttling or minimum period between NOTIFY requests this reason no throttling or minimum period between NOTIFY requests
is specified for this package. is specified for this package.
3.11 State Agents 3.11 State Agents
State agents are not applicable to this event package. State agents are not applicable to this event package.
3.12 Examples 3.12 Examples
SUBSCRIBE sip:00df1e004cd0@example.com SIP/2.0 SUBSCRIBE sip:00df1e004cd0@example.com SIP/2.0
Event: sip-profile;profile-type=device;vendor=acme; Event: sip-profile;profile-name=device;vendor=acme;
model=Z100;version=1.2.3 model=Z100;version=1.2.3
From: sip:00df1e004cd0@acme.com;tag=1234 From: sip:00df1e004cd0@acme.com;tag=1234
To: sip:00df1e004cd0@acme.com;tag=abcd To: sip:00df1e004cd0@acme.com;tag=abcd
Call-ID: 3573853342923422@10.1.1.44 Call-ID: 3573853342923422@10.1.1.44
CSeq: 2131 SUBSCRIBE CSeq: 2131 SUBSCRIBE
Contact: sip:00df1e004cd0@10.1.1.44 Contact: sip:00df1e004cd0@10.1.1.44
Content-Length: 0 Content-Length: 0
NOTIFY sip:00df1e004cd0@10.1.1.44 SIP/2.0 NOTIFY sip:00df1e004cd0@10.1.1.44 SIP/2.0
Event: sip-profile;effective-by=3600 Event: sip-profile;effective-by=3600
skipping to change at page 11, line 37 skipping to change at page 12, line 18
Content-Type: application/z100-device-profile Content-Type: application/z100-device-profile
Content-ID: <39EHF78SA@example.com> Content-ID: <39EHF78SA@example.com>
--boundary42-- --boundary42--
3.13 Use of URIs to Retrieve State 3.13 Use of URIs to Retrieve State
The profile type specified determines what goes in the user part of The profile type specified determines what goes in the user part of
the SUBSRIBE URI. If the profile type requested is "device", the the SUBSRIBE URI. If the profile type requested is "device", the
user part is an identity that MUST be unique across all user agents user part of the URI is an identity that MUST be unique across all
from all vendors. This identity must be static over time so that the user agents from all vendors. This identity must be static over time
profile delivery server can keep it associated with its profiles. so that the profile delivery server can keep a specific device and
For Ethernet hardware type user agents supporting only a single user its identity associated with its profiles. For Ethernet hardware
at a time this is most easily accomplished using its MAC address. type user agents supporting only a single user at a time this is most
Software based user agents running on general purpose hardware may easily accomplished using its MAC address. Software based user
also be able to use the MAC address for identity. However in agents running on general purpose hardware may also be able to use
situations where multiple instance of user agents are running on the the MAC address for identity. However in situations where multiple
same hardware it may be necessary to use a another scheme, such as instances of user agents are running on the same hardware it may be
using a unique serial number for the software. necessary to use a another scheme, such as using a unique serial
number for each software user agent instance.
For example a device having a MAC address of 00df1e004cd0 might
subscribe to the device profile URI:
sip:00df1e004cd0@sipuaconfig.example.com. When subscribing to a
user profile for user Fred S. the user agent would subscribe to
the URI: sip:freds@sipuaconfig.example.com
If the profile type request is "user" the URI in the SUBSCRIBE If the profile type request is "user" the URI in the SUBSCRIBE
request is the address of record for the user. This allows the user request is the address of record for the user. This allows the user
to specify (e.g. login) to the user agent by simply entering their to specify (e.g. login) to the user agent by simply entering their
known identity. known identity.
4. Profile Delivery Framework Details 4. Profile Delivery Framework Details
The following describes how different functional steps of the profile The following describes how different functional steps of the profile
delivery framework work. Also described here is how the event delivery framework work. Also described here is how the event
skipping to change at page 12, line 29 skipping to change at page 13, line 17
for the user agent (out of the box) is what to use for the host and for the user agent (out of the box) is what to use for the host and
port in the URI. Due to the wide variation of environments in which port in the URI. Due to the wide variation of environments in which
the enrolling user agent may reside (e.g. behind residential router, the enrolling user agent may reside (e.g. behind residential router,
enterprise LAN, ISP, dialup modem) and the limited control that the enterprise LAN, ISP, dialup modem) and the limited control that the
administrator of the profile delivery server (e.g. enterprise, administrator of the profile delivery server (e.g. enterprise,
service provider) may have over that environment, no single discovery service provider) may have over that environment, no single discovery
mechanism works everywhere. Therefore a number of mechanisms SHOULD mechanism works everywhere. Therefore a number of mechanisms SHOULD
be tried in the specified order: SIP DHCP option [RFC3361], SIP DNS be tried in the specified order: SIP DHCP option [RFC3361], SIP DNS
SRV [RFC3263], DNS A record and manual. SRV [RFC3263], DNS A record and manual.
1. The first discovery mechanizm that SHOULD be tried is to 1. The first discovery mechanism that SHOULD be tried is to
construct the SUBSCRIBE URI as described in Section 3.13 using construct the SUBSCRIBE URI as described in Section 3.13 using
the host and port of out bound proxy discovered by the SIP DHCP the host and port of out bound proxy discovered by the SIP DHCP
option as described in [RFC3361]. If the SIP DHCP option is not option as described in [RFC3361]. If the SIP DHCP option is not
provided in the DHCP response, no SIP response or a SIP failure provided in the DHCP response, no SIP response or a SIP failure
response other than for authorization is received for the response other than for authorization is received for the
SUBSCRIBE request to the sip-profile event, the next discovery SUBSCRIBE request to the sip-profile event, the next discovery
mechanism SHOULD be tried. mechanism SHOULD be tried.
2. The local IP network domain for the user agent, either configured 2. The local IP network domain for the user agent, either configured
or discovered via DHCP, should be used with the technique in or discovered via DHCP, should be used with the technique in
[RFC3263] to obtain a host and port to use in the SUBSCRIBE URI. [RFC3263] to obtain a host and port to use in the SUBSCRIBE URI.
skipping to change at page 13, line 7 skipping to change at page 13, line 43
should be tried next using the technique in [RFC3263] to obtain a should be tried next using the technique in [RFC3263] to obtain a
host and port to use in the SUBSCRIBE URI. If no SIP response or host and port to use in the SUBSCRIBE URI. If no SIP response or
a SIP failure response other than for authorization is received a SIP failure response other than for authorization is received
for the SUBSCRIBE request to the sip-profile event, the next for the SUBSCRIBE request to the sip-profile event, the next
discovery mechanism SHOULD be tried. discovery mechanism SHOULD be tried.
4. If all other discovery techniques fail, the user agent MUST 4. If all other discovery techniques fail, the user agent MUST
provide a manual means for the user to enter the host and port provide a manual means for the user to enter the host and port
used to construct the SUBSCRIBE URI. used to construct the SUBSCRIBE URI.
Once a user agent has successfully discovered, enrolled, received a Once a user agent has successfully discovered, enrolled, received a
NOTIFY response with profile URL(s), the user agent SHOULD cache the NOTIFY response with profile data or URI(s), the user agent SHOULD
SUBCRIBE URI to avoid having to rediscover the profile delivery cache the SUBCRIBE URI to avoid having to rediscover the profile
server again in the future. The user agent SHOULD NOT cache the delivery server again in the future. The user agent SHOULD NOT cache
SUBSCRIBE URI until it receives a NOTIFY with profile URL(s). The the SUBSCRIBE URI until it receives a NOTIFY with profile data or
reason for this is that a profile delivery server may send 202 URI(s). The reason for this is that a profile delivery server may
responses to SUBSCRIBE requests and NOTIFY responses to unknown user send 202 responses to SUBSCRIBE requests and NOTIFY responses to
agent (see section Section 3.6) with no URLs. Until the profile unknown user agent (see section Section 3.6) with no URIs. Until the
delivery server has sent a NOTIFY request with profile URL(s), it has profile delivery server has sent a NOTIFY request with profile data
not agreed to provide profiles. or URI(s), it has not agreed to provide profiles.
To illustrate why the user agent should not cache the SUBSCRIBE To illustrate why the user agent should not cache the SUBSCRIBE
URI until profile URL(s) are provided in the NOTIFY, consider the URI until profile URI(s) are provided in the NOTIFY, consider the
following example: a user agent running on a laptop plugged into following example: a user agent running on a laptop plugged into
a visited LAN in which a foreign profile delivery server is a visited LAN in which a foreign profile delivery server is
discovered. The profile delivery server never provides profile discovered. The profile delivery server never provides profile
URLs in the NOTIFY request as it is not provisioned to accept the URIs in the NOTIFY request as it is not provisioned to accept the
user agent. The user then takes the laptop to their enterprise user agent. The user then takes the laptop to their enterprise
LAN. If the user agent cached the SUBSCRIBE URI from the visited LAN. If the user agent cached the SUBSCRIBE URI from the visited
LAN (which did not provide profiles), the user agent would not LAN (which did not provide profiles), the user agent would not
attempt to discover the profile delivery server in the enterprise attempt to discover the profile delivery server in the enterprise
LAN which is provisioned to provide profiles to the user agent.. LAN which is provisioned to provide profiles to the user agent..
4.2 Enrollment with Profile Server 4.2 Enrollment with Profile Server
Enrollment is accomplished by subscribing to the event package Enrollment is accomplished by subscribing to the event package
described in section Section 3. The enrollment process is useful to described in section Section 3. The enrollment process is useful to
skipping to change at page 13, line 45 skipping to change at page 14, line 33
profile delivery server is provisioned to provide profiles to; those profile delivery server is provisioned to provide profiles to; those
present that the server may be provide profiles in the future; and present that the server may be provide profiles in the future; and
those that the server can automatically provide default profiles). those that the server can automatically provide default profiles).
It is an implementation choice and business policy as to whether the It is an implementation choice and business policy as to whether the
profile delivery server provides profiles to user agents that it is profile delivery server provides profiles to user agents that it is
not provisioned to do so. However the profile server SHOULD accept not provisioned to do so. However the profile server SHOULD accept
(with 2xx response) SUBSCRIBE requests from any user agent. (with 2xx response) SUBSCRIBE requests from any user agent.
4.3 Notification of Profile Changes 4.3 Notification of Profile Changes
The NOTIFY request in the sip-profile event package server two The NOTIFY request in the sip-profile event package serves two
purposes. First it provides the user agent with a means to obtain purposes. First it provides the user agent with a means to obtain
the URL(s) for desired profiles without requiring the end user to the profile data or URI(s) for desired profiles without requiring the
manually enter them. It also provides the means for the profile end user to manually enter them. It also provides the means for the
delivery server to notify the user agent that the content of the profile delivery server to notify the user agent that the content of
profiles have changed and should be made effective. the profiles have changed and should be made effective.
4.4 Retrieval of Profile Data 4.4 Retrieval of Profile Data
The user agent retrieves it's needed profile(s) via the URL(s) The user agent retrieves it's needed profile(s) via the URI(s)
provide in the NOTIFY request as specified in section Section 3.5. provide in the NOTIFY request as specified in section Section 3.5.
The profile delivery server SHOULD secure the content of the profiles The profile delivery server SHOULD secure the content of the profiles
using one of the techniques described in Section 6. The user agent using one of the techniques described in Section 6. The user agent
SHOULD make the new profiles effective in the timeframe described in SHOULD make the new profiles effective in the timeframe described in
section Section 3.2. section Section 3.2.
The contents of the profiles SHOULD be cached by the user agent. The contents of the profiles SHOULD be cached by the user agent.
This it to avoid the situation where the content delivery server is This it to avoid the situation where the content delivery server is
not available, leaving the user agent non-functional. not available, leaving the user agent non-functional.
4.5 Upload of Profile Changes 4.5 Upload of Profile Changes
The user agent or other service MAY push changes up to the profile The user agent or other service MAY push changes up to the profile
delivery server using the technique appropriate to the profile's URL delivery server using the technique appropriate to the profile's URL
scheme (e.g. HTTP PUT method, FTP put command). The technique for scheme (e.g. HTTP PUT method, FTP put command). The technique for
pushing incremental or atomic changes MUST be described by the pushing incremental or atomic changes MUST be described by the
specific profile data framework. specific profile data framework.
5. IANA Considerations 5. IANA Considerations
[TBD] There are several IANA considerations associated with this
specification.
5.1 SIP Event Package
This specification registers a new event package as defined in
[RFC3265]. The following information required for this registration:
Package Name: sip-profile
Package or Template-Package: This is a package
Published Document: RFC XXXX (Note to RFC Editor: Please fill in
XXXX with the RFC number of this specification).
Person to Contact: Daniel Petrie dpetrie@pingtel.com
New event header parameters: profile-name, vendor, model, version,
effective-by
6. Security Considerations 6. Security Considerations
Profiles may contain sensitive data such as user credentials. The Profiles may contain sensitive data such as user credentials. The
protection of this data is accomplished via the profile retrieval protection of this data depends upon how the data is delivered. If
function. This simplifies the security solution as the SIP event the data is delivered in the NOTIFY body, SIP authentication MUST be
package does not need to authenticate, authorize or protect the used for SUBSRIPTION and SIPS and/or S/MIME MAY be use to encrypt the
contents of the SIP messages. Effectively the profile delivery data. If the data is provided via content indirection, SIP
server will provide profile URL(s) to any one. The URLs themselves authentication is not necessary for the SUBSCRIBE request. With
are protected via authentication, authorization and snooping. Three content indirection the data is protected via the authentication,
options for secure retrieval of profiles are follow: authorization and encryption mechanisms provided by the profile URL
scheme. Use of the URL scheme security mechanisms via content
indirection simplifies the security solution as the SIP event package
does not need to authenticate, authorize or protect the contents of
the SIP messages. Effectively the profile delivery server will
provide profile URI(s) to anyone. The URLs themselves are protected
via authentication, authorization and snooping (e.g. via HTTPS).
6.1 Symmetric Encryption of Profile Data 6.1 Symmetric Encryption of Profile Data
One security technique is to encrypted the profiles on the content If the URL scheme used for content indirection does not provide a an
delivery server using the AES symmetric encryption algorithm using a authentication, authorization or encryption, a technique to provide
key formed by a MD5 hash of the following: username ":" password. this is to encrypted the profiles on the content delivery server
The encrypted profiles are delivered by the content delivery server using a symmetric encryption algorithm using a shared key. The
via the URLs provided in the NOTIFY requests. Using this technique encrypted profiles are delivered by the content delivery server via
the profile delivery server does not need to provide authentication the URIs provided in the NOTIFY requests. Using this technique the
or authorization for the retrieval as the profiles are obscured. The profile delivery server does not need to provide authentication or
user agent must obtain the username and password from the user to authorization for the retrieval as the profiles are obscured. The
generate the key and perform AES decryption the profiles. This is user agent must obtain the username and password from the user or
the simplest security technique as it does not require any public key other out of band means to generate the key and decrypt the profiles.
infrastructure or TLS implementation on the user agent (which often
has limited resources).
6.2 Client Certificate Authentication with HTTPS
In another technique the content delivery server authenticates the
user or user agent by requesting the client's certificate in the TLS
connection established as described by the profile URL. The content
delivery server authorizes the profile retrieval using the
certificate identity and business policy choices provide by the
server implementer. The profile data is obscured from snooping using
the encryption mechanisms provide by the TLS connect. This has nice
properties of not requiring end user intervention, but has a higher
administrative cost for user agent certificate management and
distribution. It also requires the certificates to be in place
before enabling profile delivery.
6.3 HTTPS Authentication
Alternatively the authentication mechanizms described in [RFC2617]
are used. The content delivery server authorizes the profile
retrieval using the certificate identity and business policy choices
provide by the server implementer. The profile data is obscure from
snooping using the encryption mechanisms provide by the TLS connect.
This also requires the overhead of a TLS implementation on the user
agent.
For all of these techniques the user agent should take care in how it
stores or caches the profiles to avoid theft. It is recommended that
a symmetric encryption technique such as that described in section
Section 6.1 be used. This also requires the overhead of a TLS
implementation on the user agent.
7. Differences from Simple XCAP Package 7. Differences from Simple XCAP Package
The author of this document had an action item from the July 2003 The author of this document had an action item from the July 2003
IETF SIPPING WG meeting to consider resolving the differences of the IETF SIPPING WG meeting to consider resolving the differences of the
sip-profile and simple XCAP package [I-D.ietf-simple-xcap-package]. sip-profile and simple XCAP package [I-D.ietf-simple-xcap-package].
It is the author's opinion that XCAP [I-D.rosenberg-simple-xcap] can It is the author's opinion that XCAP [I-D.rosenberg-simple-xcap] can
be supported by the framework and event package defined in this be supported by the framework and event package defined in this
document as it is simply a URL using the HTTP or HTTPS scheme. The document and that this package provides a superset of the
following lists the differences between the event packaged defined in functionality in the XCAP package. The following lists the
this document vs. the one defined in [I-D.ietf-simple-xcap-package]. differences between the event packaged defined in this document vs.
the one defined in [I-D.ietf-simple-xcap-package].
The simple XCAP package requires that the relative path be known and The simple XCAP package requires that the relative path be known and
specified by the user agent when subscribing for change notification. specified by the user agent when subscribing for change notification.
The event package in this document requires a token be known and The event package in this document requires a token or complete URI
specified when subscribing. The advantage of the latter is that be known and specified when subscribing. The advantage of the token
bootstrapping is easier and well defined. It also leaves the freedom is that bootstrapping is easier and well defined. It also leaves the
of specifying the entire path of the profile URL up to the profile freedom of specifying and changing the entire path of the profile URL
delivery server. up to the profile delivery server.
The event package defined in this document allows multiple URLs to be The event package defined in this document allows multiple URIs to be
provided in the NOTIFY request body as a result of a single token provided in the NOTIFY request body as a result of a single token
specified in the SUBSCRIBE event parameter: profile-type. This specified in the SUBSCRIBE event parameter: profile-name. This
allows the profile delivery server to provide sets of profiles that allows the profile delivery server to provide sets of profiles that
the user agent may not have enough information to specify in the the user agent may not have enough information to specify in the
SUBSCRIBE URI (e.g. at boot strapping time the user agent may not SUBSCRIBE URI (e.g. at boot strapping time the user agent may not
know the user's identity, but the profile delivery server may know know the user's identity, but the profile delivery server may know
the default user for the device's identity) or the doc-component of the default user for the device's identity) or the doc-component of
the simple XCAP package. the simple XCAP package.
The simple XCAP package provides profile data changes or deltas in
the body of the NOTIFY request. This is a desirable feature, but
approach in the simple XCAP package has a few disadvantages:
o SIP signaling requires authentication, authorization and
encryption (SIPS) to protect the profiles where the event package
in this document does not. SIPS may require more resources than
are available on many user agents.
o The content of a profile change may be large, causing
fragmentation and problems or constraints when using UDP.
The feature of providing profile data changes or deltas can be
provided in the package proposed in this document by providing two
URLs in the NOTIFY request for each profile (i.e. a URL for the
complete profile and another for the changes).
All other functional differences between All other functional differences between
draft-ietf-sipping-config-framework-00 and draft-ietf-sipping-config-framework-00 and
draft-ietf-simple-xcap-package-00 are believed to be resolved in this draft-ietf-simple-xcap-package-00 are believed to be resolved in this
version of this document. version of this document.
8. Open Issues 8. Open Issues
9. Change History 9. Change History
9.1 Changes from draft-ietf-sipping-config-framework-00.txt 9.1 Changes from draft-ietf-sipping-config-framework-01.txt
Changed the name of the profile-type event parameter to profile-name.
Also allow the profile-name parameter to be either a token or or an
explicit URI.
Allow content indirection to be optional. Clarified the use of the
Accept header to indicate how the profile is to be delivered.
Added some content to the Iana section.
9.2 Changes from draft-ietf-sipping-config-framework-00.txt
This version of the document was entirely restructured and re-written This version of the document was entirely restructured and re-written
from the previous version as it had been micro edited too much. from the previous version as it had been micro edited too much.
All of the aspects of defining the event package are now organized in All of the aspects of defining the event package are now organized in
one section and is believed to be complete and up to date with one section and is believed to be complete and up to date with
[RFC3265]. [RFC3265].
The URI used to subscribe to the event package is now either the user The URI used to subscribe to the event package is now either the user
or device address or record. or device address or record.
skipping to change at page 17, line 19 skipping to change at page 17, line 38
The user agent information (vendor, model, MAC and serial number) are The user agent information (vendor, model, MAC and serial number) are
now provided as event header parameters. now provided as event header parameters.
Added a mechanism to force profile changes to be make effective by Added a mechanism to force profile changes to be make effective by
the user agent in a specified maximum period of time. the user agent in a specified maximum period of time.
Changed the name of the event package from sip-config to sip-profile Changed the name of the event package from sip-config to sip-profile
Three high level securityapproaches are now specified. Three high level securityapproaches are now specified.
9.2 Changes from draft-petrie-sipping-config-framework-00.txt 9.3 Changes from draft-petrie-sipping-config-framework-00.txt
Changed name to reflect SIPPING work group item Changed name to reflect SIPPING work group item
Synchronized with changes to SIP DHCP [RFC3361], SIP [RFC3261] and Synchronized with changes to SIP DHCP [RFC3361], SIP [RFC3261] and
[RFC3263], SIP Events [RFC3265] and content indirection [RFC3263], SIP Events [RFC3265] and content indirection
[I-D.ietf-sip-content-indirect-mech] [I-D.ietf-sip-content-indirect-mech]
Moved the device identity parameters from the From field parameters Moved the device identity parameters from the From field parameters
to User-Agent header parameters. to User-Agent header parameters.
Many thanks to Rich Schaaf of Pingtel, Cullen Jennings of Cisco and Many thanks to Rich Schaaf of Pingtel, Cullen Jennings of Cisco and
Adam Roach of Dyamicsoft for the great comments and input. Adam Roach of Dyamicsoft for the great comments and input.
9.3 Changes from draft-petrie-sip-config-framework-01.txt 9.4 Changes from draft-petrie-sip-config-framework-01.txt
Changed the name as this belongs in the SIPPING work group. Changed the name as this belongs in the SIPPING work group.
Minor edits Minor edits
9.4 Changes from draft-petrie-sip-config-framework-00.txt 9.5 Changes from draft-petrie-sip-config-framework-00.txt
Many thanks to those who contributed and commented on the previous Many thanks to those who contributed and commented on the previous
draft. Detailed comments were provided by Henning Schulzrinne from draft. Detailed comments were provided by Jonathan Rosenberg from
Columbia U., Cullen Jennings from Cisco, Rohan Mahy from Cisco, Rich Dynamicsoft, Henning Schulzrinne from Columbia U., Cullen Jennings
Schaaf from Pingtel. from Cisco, Rohan Mahy from Cisco, Rich Schaaf from Pingtel.
Split the enrollment into a single SUBSCRIBE dialog for each profile. Split the enrollment into a single SUBSCRIBE dialog for each profile.
The 00 draft sent a single SUBSCRIBE listing all of the desired. The 00 draft sent a single SUBSCRIBE listing all of the desired.
These have been split so that each enrollment can be routed These have been split so that each enrollment can be routed
differently. As there is a concept of device specific and differently. As there is a concept of device specific and
user specific profiles, these may also be managed on separate user specific profiles, these may also be managed on separate
servers. For instance in a roaming situation the device might get servers. For instance in a roaming situation the device might get
it's profile data from a local server which knows the LAN specific it's profile data from a local server which knows the LAN specific
profile data. At the same time the user specific profiles might come profile data. At the same time the user specific profiles might come
skipping to change at page 19, line 4 skipping to change at page 19, line 23
[I-D.rosenberg-simple-xcap] [I-D.rosenberg-simple-xcap]
Rosenberg, J., "The Extensible Markup Language (XML) Rosenberg, J., "The Extensible Markup Language (XML)
Configuration Access Protocol (XCAP)", Configuration Access Protocol (XCAP)",
draft-rosenberg-simple-xcap-00 (work in progress), May draft-rosenberg-simple-xcap-00 (work in progress), May
2003. 2003.
[I-D.sinnreich-sipdev-req] [I-D.sinnreich-sipdev-req]
Butcher, I., Lass, S., Petrie, D., Sinnreich, H. and C. Butcher, I., Lass, S., Petrie, D., Sinnreich, H. and C.
Stredicke, "SIP Telephony Device Requirements, Stredicke, "SIP Telephony Device Requirements,
Configuration and Data", draft-sinnreich-sipdev-req-02 Configuration and Data", draft-sinnreich-sipdev-req-03
(work in progress), October 2003. (work in progress), February 2004.
[RFC0822] Crocker, D., "Standard for the format of ARPA Internet [RFC0822] Crocker, D., "Standard for the format of ARPA Internet
text messages", STD 11, RFC 822, August 1982. text messages", STD 11, RFC 822, August 1982.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2131] Droms, R., "Dynamic Host Configuration Protocol", RFC [RFC2131] Droms, R., "Dynamic Host Configuration Protocol", RFC
2131, March 1997. 2131, March 1997.
[RFC2132] Alexander, S. and R. Droms, "DHCP Options and BOOTP Vendor [RFC2132] Alexander, S. and R. Droms, "DHCP Options and BOOTP Vendor
Extensions", RFC 2132, March 1997. Extensions", RFC 2132, March 1997.
[RFC2246] Dierks, T., Allen, C., Treese, W., Karlton, P., Freier, A. [RFC2246] Dierks, T. and C. Allen, "The TLS Protocol Version 1.0",
and P. Kocher, "The TLS Protocol Version 1.0", RFC 2246, RFC 2246, January 1999.
January 1999.
[RFC2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H., [RFC2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,
Masinter, L., Leach, P. and T. Berners-Lee, "Hypertext Masinter, L., Leach, P. and T. Berners-Lee, "Hypertext
Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999. Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.
[RFC2617] Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S., [RFC2617] Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S.,
Leach, P., Luotonen, A. and L. Stewart, "HTTP Leach, P., Luotonen, A. and L. Stewart, "HTTP
Authentication: Basic and Digest Access Authentication", Authentication: Basic and Digest Access Authentication",
RFC 2617, June 1999. RFC 2617, June 1999.
skipping to change at page 20, line 18 skipping to change at page 20, line 37
Author's Address Author's Address
Daniel Petrie Daniel Petrie
Pingtel Corp. Pingtel Corp.
400 W. Cummings Park 400 W. Cummings Park
Suite 2200 Suite 2200
Woburn, MA 01801 Woburn, MA 01801
US US
Phone: "Dan Petrie (+1 781 970 0111)"<sip:dpetrie@pingtel.com> Phone: "Dan Petrie (+1 781 938 5306)"<sip:dpetrie@pingtel.com>
EMail: dpetrie@pingtel.com EMail: dpetrie@pingtel.com
URI: http://www.pingtel.com/ URI: http://www.pingtel.com/
Appendix A. Acknowledgments Appendix A. Acknowledgments
Intellectual Property Statement Intellectual Property Statement
The IETF takes no position regarding the validity or scope of any The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in pertain to the implementation or use of the technology described in
skipping to change at page 21, line 34 skipping to change at page 21, line 34
this standard. Please address the information to the IETF Executive this standard. Please address the information to the IETF Executive
Director. Director.
The IETF has been notified of intellectual property rights claimed in The IETF has been notified of intellectual property rights claimed in
regard to some or all of the specification contained in this regard to some or all of the specification contained in this
document. For more information consult the online list of claimed document. For more information consult the online list of claimed
rights. rights.
Full Copyright Statement Full Copyright Statement
Copyright (C) The Internet Society (2003). All Rights Reserved. Copyright (C) The Internet Society (2004). All Rights Reserved.
This document and translations of it may be copied and furnished to This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of Internet organizations, except as needed for the purpose of
 End of changes. 

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