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Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): Architecture, Addresses, and Error Handling
RFC 7247

Internet Engineering Task Force (IETF)                    P. Saint-Andre
Request for Comments: 7247                                          &yet
Category: Standards Track                                       A. Houri
ISSN: 2070-1721                                                      IBM
                                                           J. Hildebrand
                                                     Cisco Systems, Inc.
                                                                May 2014

   Interworking between the Session Initiation Protocol (SIP) and the
           Extensible Messaging and Presence Protocol (XMPP):
              Architecture, Addresses, and Error Handling

Abstract

   As a foundation for the definition of bidirectional protocol mappings
   between the Session Initiation Protocol (SIP) and the Extensible
   Messaging and Presence Protocol (XMPP), this document specifies the
   architectural assumptions underlying such mappings as well as the
   mapping of addresses and error conditions.

Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in 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/rfc7247.

Saint-Andre, et al.          Standards Track                    [Page 1]
RFC 7247               SIP-XMPP Interworking: Core              May 2014

Copyright Notice

   Copyright (c) 2014 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 ....................................................3
   2. Intended Audience ...............................................3
   3. Terminology .....................................................4
   4. Architectural Assumptions .......................................4
   5. Interdomain Federation ..........................................6
   6. Address Mapping .................................................7
      6.1. Overview ...................................................7
      6.2. Local Part Mapping .........................................9
      6.3. Instance-Specific Mapping .................................11
      6.4. SIP to XMPP ...............................................11
      6.5. XMPP to SIP ...............................................12
   7. Error Mapping ..................................................14
      7.1. XMPP to SIP ...............................................15
      7.2. SIP to XMPP ...............................................17
   8. Security Considerations ........................................20
   9. References .....................................................21
      9.1. Normative References ......................................21
      9.2. Informative References ....................................22
   Appendix A. Acknowledgements ......................................24

Saint-Andre, et al.          Standards Track                    [Page 2]
RFC 7247               SIP-XMPP Interworking: Core              May 2014

1.  Introduction

   The IETF has worked on two signaling technologies that can be used
   for multimedia session negotiation, instant messaging, presence,
   capabilities discovery, notifications, and other functions served by
   real-time communication applications:

   o  The Session Initiation Protocol [RFC3261], 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 [RFC6120], along
      with various XMPP extensions developed by the IETF as well as by
      the XMPP Standards Foundation (XSF).

   Because these technologies are widely deployed, it is important to
   clearly define mappings between them for the sake of interworking.

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