SIP for Instant Messaging and Presence Leveraging Extensions (simple)
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 Charter
 Last Modified: 2009-03-30

 Current Status: Active Working Group

 Chair(s):
     Hisham Khartabil  <hisham.khartabil@gmail.com>
     Ben Campbell  <ben@nostrum.com>

 Real-time Applications and Infrastructure Area Director(s):
     Robert Sparks  <rjsparks@nostrum.com>
     Cullen Jennings  <fluffy@cisco.com>

 Real-time Applications and Infrastructure Area Advisor:
     Robert Sparks  <rjsparks@nostrum.com>

 Technical Advisor(s):
     Jon Peterson  <jon.peterson@neustar.biz>

 Mailing Lists: 
     General Discussion:simple@ietf.org
     To Subscribe:      simple-request@ietf.org
         In Body:       subscribe
     Archive:           http://www.ietf.org/mail-archive/web/simple/index.html

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 

   Feb 2007       Submission of proposed mechanisms meeting the advanced 
                messaging requirements to the IESG or appropriate working group 

   Feb 2007       Submission of XCAP event package to IESG or appropriate working 
                group targeting publication as Proposed Standard 

   Feb 2007       Submission of an Instant Message Disposition Notification 
                mechanism to the IESG for publication as a Proposed Standard 

   Mar 2007       Submission of a performance and scalability analysis of the 
                SIMPLE presence mechanisms to the IESG for publication as 
                Informational 

   Jun 2007       Submission of SIMPLE protocol annotated overview draft to IESG 
                for publication as Informational 

   Aug 2007       Submission of proposed mechanisms for initiating and managing 
                Instant Message group chat to the IESG for publication as 
                Proposed Standard 

   Aug 2007       Conclusion of SIMPLE 

   Dec 2009       Submission of additional connection models for MSRP to IESG for 
                Proposed Standard 


 Internet-Drafts:

Posted Revised         I-D Title   <Filename>
------ ------- --------------------------------------------
Feb 2005 Jun 2009   <draft-ietf-simple-xcap-diff-13.txt>
                An Extensible Markup Language (XML) Document Format for 
                Indicating A Change in XML Configuration Access Protocol (XCAP) 
                Resources 

Feb 2007 Aug 2009   <draft-ietf-simple-interdomain-scaling-analysis-08.txt>
                Presence Interdomain Scaling Analysis for SIP/SIMPLE 

Jun 2007 Oct 2009   <draft-ietf-simple-chat-05.txt>
                Multi-party Chat Using the Message Session Relay Protocol 
                (MSRP) 

Feb 2009 Jan 2010   <draft-ietf-simple-msrp-acm-04.txt>
                An Alternative Connection Model for the Message Session Relay 
                Protocol (MSRP) 

Dec 2009 Dec 2009   <draft-ietf-simple-msrp-sessmatch-01.txt>
                Session Matching Update for the Message Session Relay Protocol 
                (MSRP) 

 Request For Comments:

  RFC   Stat Published     Title
------- -- ----------- ------------------------------------
RFC3856Standard  Aug 2004    A Presence Event Package for the Session Initiation 
                       Protocol (SIP) 

RFC3857Standard  Aug 2004    A Watcher Information Event Template-Package for the 
                       Session Initiation Protocol (SIP) 

RFC3858Standard  Aug 2004    An Extensible Markup Language (XML) Based Format for 
                       Watcher Information 

RFC3994Standard  Feb 2005    Indication of Message Composition for Instant Messaging 

RFC4481 PS   Jul 2006    Timed Presence Extensions to the Presence Information 
                       Data Format (PIDF) to Indicate Status Information for 
                       Past and Future Time Intervals 

RFC4480 PS   Jul 2006    RPID: Rich Presence Extensions to the Presence 
                       Information Data Format (PIDF) 

RFC4482 PS   Jul 2006    CIPID: Contact Information in Presence Information Data 
                       Format 

RFC4479 PS   Jul 2006    A Data Model for Presence 

RFC4662 PS   Aug 2006    A Session Initiation Protocol (SIP) Event Notification 
                       Extension for Resource Lists 

RFC4661 PS   Sep 2006    An Extensible Markup Language (XML) Based Format for 
                       Event Notification Filtering 

RFC4660 PS   Sep 2006    Functional Description of Event Notification Filtering 

RFC4825 PS   May 2007    The Extensible Markup Language (XML) Configuration 
                       Access Protocol (XCAP) 

RFC4826 PS   May 2007    Extensible Markup Language (XML) Formats for 
                       Representing Resource Lists 

RFC4827 PS   May 2007    An Extensible Markup Language (XML) Configuration Access 
                       Protocol (XCAP) Usage for Manipulating Presence Document 
                       Contents 

RFC4976 PS   Sep 2007    Relay Extensions for the Message Sessions Relay Protocol 
                       (MSRP) 

RFC4975 PS   Sep 2007    The Message Session Relay Protocol (MSRP) 

RFC5025 PS   Dec 2007    Presence Authorization Rules 

RFC5264 PS   Sep 2008    Publication of Partial Presence Information 

RFC5263Standard  Sep 2008    Session Initiation Protocol (SIP) extension for Partial 
                       Notification of Presence Information 

RFC5262 PS   Sep 2008    Presence Information Data format (PIDF) Extension for 
                       Partial Presence 

RFC5261 PS   Sep 2008    An Extensible Markup Language (XML) Patch Operations 
                       Framework Utilizing XML Path Language (XPath) Selectors 

RFC5196 PS   Sep 2008    Session Initiation Protocol (SIP) User Agent Capability 
                       Extension to Presence Information Data Format (PIDF) 

RFC5438 PS   Feb 2009    Instant Message Disposition Notification (IMDN)