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Stox Status Pages

SIP-TO-XMPP (Concluded WG)
Art Area: Barry Leiba, Murray Kucherawy | 2013-Jun-14 — 2017-Jan-25 

2016-04-07 charter

SIP-TO-XMPP (stox)


 Current Status: Active

     Markus Isomaki <markus.isomaki@nokia.com>
     Yana Stamcheva <yana@jitsi.org>

 Applications and Real-Time Area Directors:
     Ben Campbell <ben@nostrum.com>
     Alissa Cooper <alissa@cooperw.in>
     Alexey Melnikov <aamelnikov@fastmail.fm>

 Applications and Real-Time Area Advisor:
     Ben Campbell <ben@nostrum.com>

 Mailing Lists:
     General Discussion: stox@ietf.org
     To Subscribe:       https://www.ietf.org/mailman/listinfo/stox
     Archive:            https://mailarchive.ietf.org/arch/browse/stox/

Description of Working Group:

  Problem Statement

  The IETF has defined two signalling technologies that can be used
  for multimedia session negotiation, instant messaging, presence,
  file transfer, capabilities discovery, notifications, and other types
  of real-time functionality:

  o  The Session Initiation Protocol (SIP), along with various SIP
     extensions developed within the SIP for Instant Messaging and
     Presence Leveraging Extensions (SIMPLE) Working Group.

  o  The Extensible Messaging and Presence Protocol (XMPP), along
     with various XMPP extensions developed by the IETF as well as by
     the XMPP Standards Foundation.

  SIP has been focused primarily on media session negotiation (e.g.,
  audio and video), whereas XMPP has been focused primarily on messaging
  and presence.  As a result, the technologies are mostly complementary.
  However, there is also some overlap between SIP and XMPP, since there
  are SIP extensions for messaging, presence, groupchat, file transfer,
  etc., and there are XMPP extensions for multimedia session negotiation.
  This overlap has practical implications, since some deployed services
  use SIP for both media and messaging/presence, whereas other deployed
  services use XMPP for both messaging/presence and media.  When such
  services wish to exchange information, they often need to translate
  their native protocol (either SIP or XMPP) to the other protocol
  (either XMPP or SIP).

  Implementers needing to perform such protocol mappings have often worked
  out their own heuristics for doing so.  Unfortunately, these heuristics
  are not always consistent, which can lead to interoperability problems.


  To make it easier for implementers to enable interworking between
  SIP-based systems and XMPP-based systems, several Internet-Drafts have
  defined guidelines for protocol mapping between SIP and XMPP, starting
  with draft-saintandre-xmpp-simple-00 in early 2004.  The current
  documents are:


  Those documents are fairly stable and the authors have received feedback
  from a number of implementers over the years.  However, implementers do
  not always know that such mapping specifications exist, because they are
  Internet-Drafts and sometimes they have become expired due to
  inactivity.  Thus it would be helpful to publish a set of mapping
  specifications as RFCs; the foregoing Internet-Drafts provide likely
  starting points, but other proposals are welcome as per normal IETF
  working group processes.

  It might also be helpful to at some point publish additional documents
  in the same series, covering topics like capabilities discovery and
  file transfer.  However, any such work would require a recharter.

  The group shall not be tasked with defining any new protocols, only with
  specifying mappings between existing protocols that have been defined
  for SIP and XMPP.


  1. Address mapping and error handling
  2. Presence mapping
  3. Mapping for single instant messages
  4. Mapping for one-to-one text chat sessions
  5. Mapping for multi-user text chat sessions
  6. Mapping for media signaling

  All of the foregoing deliverables are standards track, since they are
  subject to interoperability testing.

Goals and Milestones:
  Jun 2013 - Accept starting-point mapping specifications as WG items
  Aug 2013 - Start Working Group Last Call on mapping specifications
  Oct 2013 - Submit mapping specifications to the IESG

All charter page changes, including changes to draft-list, rfc-list and milestones:

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