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CUSAX: Combined Use of the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP)
RFC 7081

Document type: RFC - Informational (November 2013; No errata)
Was draft-ivov-xmpp-cusax (individual)
Document stream: IETF
Last updated: 2013-11-27
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: Mary Barnes
Shepherd Write-Up: Last changed 2013-06-18

IESG State: RFC 7081 (Informational)
IANA Action State: No IC
Responsible AD: Gonzalo Camarillo
Send notices to: emcho@jitsi.org, enrico.marocco@telecomitalia.it, psaintan@cisco.com, draft-ivov-xmpp-cusax@tools.ietf.org

Internet Engineering Task Force (IETF)                           E. Ivov
Request for Comments: 7081                                         Jitsi
Category: Informational                                   P. Saint-Andre
ISSN: 2070-1721                                      Cisco Systems, Inc.
                                                              E. Marocco
                                                          Telecom Italia
                                                           November 2013

      CUSAX: Combined Use of the Session Initiation Protocol (SIP)
       and the Extensible Messaging and Presence Protocol (XMPP)

Abstract

   This document suggests some strategies for the combined use of the
   Session Initiation Protocol (SIP) and the Extensible Messaging and
   Presence Protocol (XMPP) both in user-oriented clients and in
   deployed servers.  Such strategies, which mainly consist of
   configuration changes and minimal software modifications to existing
   clients and servers, aim to provide a single, full-featured, real-
   time communication service by using complementary subsets of features
   from SIP and from XMPP.  Typically, such subsets consist of telephony
   capabilities from SIP and instant messaging and presence capabilities
   from XMPP.  This document does not define any new protocols or syntax
   for either SIP or XMPP and, by intent, does not attempt to
   standardize "best current practices".  Instead, it merely aims to
   provide practical guidance to those who are interested in the
   combined use of SIP and XMPP for real-time communication.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7081.

Ivov, et al.                  Informational                     [Page 1]
RFC 7081              Combined Use of SIP and XMPP         November 2013

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................2
   2. Client Bootstrap ................................................5
   3. Operation .......................................................6
      3.1. Server-Side Setup ..........................................7
      3.2. Service Management .........................................7
      3.3. Client-Side Discovery and Usability ........................8
      3.4. Indicating a Relationship between SIP and XMPP Accounts ....9
      3.5. Matching Incoming SIP Calls to XMPP JIDs ..................10
   4. Multi-Party Interactions .......................................11
   5. Federation .....................................................12
   6. Summary of Suggested Strategies ................................13
   7. Security Considerations ........................................14
   8. References .....................................................15
      8.1. Normative References ......................................15
      8.2. Informative References ....................................16
   Appendix A. Acknowledgements ......................................18

1.  Introduction

   Historically, SIP [RFC3261] and XMPP [RFC6120] have often been
   implemented and deployed with different purposes: from its very
   start, SIP's primary goal has been to provide a means of conducting
   "Internet telephone calls".  On the other hand, XMPP has, from its
   Jabber days, been mostly used for instant messaging, presence
   [RFC6121], and related services such as groupchat rooms [XEP-0045].

Ivov, et al.                  Informational                     [Page 2]

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