Internet Engineering Task Force

SIP for Instant Messaging and Presence Leveraging Extensions (simple)

In addition to this official charter maintained by the IETF Secretariat, there is additional information about this working group on the Web at:
Additional SIMPLE Web Page

Last Modified: 2010-10-15

Additional information is available at tools.ietf.org/wg/simple

Chair(s):

Real-time Applications and Infrastructure Area Director(s):

Description of Working Group:

This working group focuses on the application of the Session Initiation
Protocol (SIP, RFC 3261) to the suite of services collectively known as
instant messaging and presence (IMP). The IETF has committed to
producing an interoperable standard for these services compliant to
the requirements for IM outlined in RFC 2779 (including the security
and privacy requirements there) and in the Common Profile for Instant
Messaging (CPIM) specification, developed within the IMPP working
group. As the most common services for which SIP is used share quite a
bit in common with IMP, the adaptation of SIP to IMP seems a natural
choice given the widespread support for (and relative maturity of) the
SIP standard.

This group has completed the majority of its primary goals and will
focus on the remaining tasks documented here and concluding. Any
proposed new work will require a recharter.

The primary remaining work of this group will be to complete:

1. The MSRP proposed standard mechanism for transporting sessions of
messages initiated using the SIP, compliant to the requirments of RFC
2779, CPIM and BCP 41.

2. The XCAP framework for representing and carrying configuration and
policy information in SIMPLE systems.

3. A mechanism for representing partial changes (patches) to XML
documents and extensions to the SIMPLE publication and notification
mechanisms to convey these partial changes.

4. A mechanism for initiating and managing Instant Message group chat.

5. An annotated overview of the SIMPLE protocol definition documents.

Any SIP extensions proposed in the course of this development will,
after a last call process, be transferred to the SIP WG for
consideration as formal SIP extensions.

Any mechanisms created for managing Instant Message group chat are
intended to provide a bridge to the conferencing protocols that will
be defined in XCON. They will be limited in scope to address only
simple Instant Message chat with nicknames and will not attempt
to address complex conferencing concepts such as sidebars. Their
design must anticipate operating in conjunction with the conferencing
protocols XCON is working towards.

The working group will work within the framework for presence and IM
described in RFC 2778. The extensions it defines must also be
compliant with the SIP processes for extensions. The group cannot
modify baseline SIP behavior or define a new version of SIP for IM and
presence. If the group determines that any capabilities requiring an
extension to SIP are needed, the group will seek to define such
extensions within the SIP working group, and then use them here.

Goals and Milestones:

Done		Submission of event package for presence to IESG for publication as Proposed Standard
Done		Submission of watcher information drafts to IESG for publication as Proposed Standards
Done		Submission of proposed event list mechanism to the SIP working group
Done		Submission of requirements for event publishing to the IESG for publication as Proposed Standard
Done		Submission of proposed mechanism for event publishing to the SIP working group
Done		Submission of SIMPLE PIDF profile to IESG for publication as Proposed Standard
Done		Submission of base XCAP draft to IESG for publication as Proposed Standard
Done		Submission of Partial Notification mechanism to IESG for publication as a Proposed Standard
Done		Submission of indication of instant message preparation using SIP to IESG for publication as a Proposed Standard
Done		Submission of XCAP usage for manipulation of presence document content
Done		Submission of XCAP usage for setting presence authorization to IESG for publication as Proposed Standard
Done		Submission of Filtering mechanisms to IESG for publication as a Proposed Standard
Done		Submission of instant messaging session draft to IESG for publication as a Proposed Standard
Done		Submission of instant messaging session relay drafts to IESG for publication as Proposed Standards
Done		Submission of proposed mechanisms meeting the advanced messaging requirements to the IESG or appropriate working group
Done		Submission of XCAP event package to IESG or appropriate working group targeting publication as Proposed Standard
Done		Submission of an Instant Message Disposition Notification mechanism to the IESG for publication as a Proposed Standard
Done		Submission of additional connection models for MSRP to IESG for Proposed Standard
Oct 2010		Submission of proposed mechanisms for initiating and managing Instant Message group chat to the IESG for publication as Proposed Standard
Nov 2010		Submission of SIMPLE protocol annotated overview draft to IESG for publication as Informational
Mar 2011		Conclusion of SIMPLE

Internet-Drafts:

SIMPLE made Simple: An Overview of the IETF Specifications for Instant Messaging and Presence using the Session Initiation Protocol (SIP) (34787 bytes)
An Alternative Connection Model for the Message Session Relay Protocol (MSRP) (18681 bytes)
Session Matching Update for the Message Session Relay Protocol (MSRP) (16703 bytes)

Request For Comments:

A Presence Event Package for the Session Initiation Protocol (SIP) (RFC 3856) (62956 bytes)
A Watcher Information Event Template-Package for the Session Initiation Protocol (SIP) (RFC 3857) (46221 bytes)
An Extensible Markup Language (XML) Based Format for Watcher Information (RFC 3858) (26416 bytes)
Indication of Message Composition for Instant Messaging (RFC 3994) (27472 bytes)
Timed Presence Extensions to the Presence Information Data Format (PIDF) to Indicate Status Information for Past and Future Time Intervals (RFC 4481) (15549 bytes)
RPID: Rich Presence Extensions to the Presence Information Data Format (PIDF) (RFC 4480) (74026 bytes)
CIPID: Contact Information in Presence Information Data Format (RFC 4482) (22157 bytes)
A Data Model for Presence (RFC 4479) (88399 bytes)
A Session Initiation Protocol (SIP) Event Notification Extension for Resource Lists (RFC 4662) (82778 bytes)
An Extensible Markup Language (XML) Based Format for Event Notification Filtering (RFC 4661) (48890 bytes)
Functional Description of Event Notification Filtering (RFC 4660) (63886 bytes)
The Extensible Markup Language (XML) Configuration Access Protocol (XCAP) (RFC 4825) (166627 bytes)
Extensible Markup Language (XML) Formats for Representing Resource Lists (RFC 4826) (68850 bytes)
An Extensible Markup Language (XML) Configuration Access Protocol (XCAP) Usage for Manipulating Presence Document Contents (RFC 4827) (22896 bytes)
Relay Extensions for the Message Sessions Relay Protocol (MSRP) (RFC 4976) (84244 bytes)
The Message Session Relay Protocol (MSRP) (RFC 4975) (144254 bytes)
Presence Authorization Rules (RFC 5025) (65880 bytes)
Publication of Partial Presence Information (RFC 5264) (30594 bytes)
Session Initiation Protocol (SIP) extension for Partial Notification of Presence Information (RFC 5263) (32556 bytes)
Presence Information Data format (PIDF) Extension for Partial Presence (RFC 5262) (28527 bytes)
An Extensible Markup Language (XML) Patch Operations Framework Utilizing XML Path Language (XPath) Selectors (RFC 5261) (78036 bytes)
Session Initiation Protocol (SIP) User Agent Capability Extension to Presence Information Data Format (PIDF) (RFC 5196) (58488 bytes)
Instant Message Disposition Notification (IMDN) (RFC 5438) (83723 bytes)
An Extensible Markup Language (XML) Document Format for Indicating A Change in XML Configuration Access Protocol (XCAP) Resources (RFC 5874) (49509 bytes)