SIP for Instant Messaging and Presence Leveraging Extensions

Document Charter SIP for Instant Messaging and Presence Leveraging Extensions WG (simple)
Title SIP for Instant Messaging and Presence Leveraging Extensions
Last updated 2001-03-08
State Approved
WG State Concluded
IESG Responsible AD Robert Sparks
Charter Edit AD (None)
Send notices to (None)


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.