Network Working Group E. Ivov
Internet-Draft Jitsi
Intended status: Informational P. Saint-Andre
Expires: November 03, 2013 Cisco Systems, Inc.
E. Marocco
Telecom Italia
May 02, 2013
CUSAX: Combined Use of the Session Initiation Protocol (SIP) and the
Extensible Messaging and Presence Protocol (XMPP)
draft-ivov-xmpp-cusax-05
Abstract
This document describes suggested practices for combined use of the
Session Initiation Protocol (SIP) and the Extensible Messaging and
Presence Protocol (XMPP). Such practices aim to provide a single
fully featured real-time communication service by using complementary
subsets of features from each of the protocols. Typically such
subsets would include telephony capabilities from SIP and instant
messaging and presence capabilities from XMPP. This specification
does not define any new protocols or syntax for either SIP or XMPP.
However, implementing it may require modifying or at least
reconfiguring existing client and server-side software. Also, it is
not the purpose of this document to make recommendations as to
whether or not such combined use should be preferred to the
mechanisms provided natively by each protocol (for example, SIP's
SIMPLE or XMPP's Jingle). It merely aims to provide guidance to
those who are interested in such a combined use.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 03, 2013.
Ivov, et al. Expires November 03, 2013 [Page 1]
Internet-Draft Combined Use of SIP and XMPP May 2013
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Client Bootstrap . . . . . . . . . . . . . . . . . . . . . . 4
3. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. Server-Side Setup . . . . . . . . . . . . . . . . . . . . 7
3.2. Client-Side Discovery and Usability . . . . . . . . . . . 7
3.3. Indicating a Relation Between SIP and XMPP Accounts . . . 8
3.4. Matching Incoming SIP Calls to XMPP JIDs . . . . . . . . 9
4. Multi-Party Interactions . . . . . . . . . . . . . . . . . . 9
5. Federation . . . . . . . . . . . . . . . . . . . . . . . . . 10
6. Security Considerations . . . . . . . . . . . . . . . . . . . 11
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
8. Informative References . . . . . . . . . . . . . . . . . . . 12
Appendix A. Acknowledgements . . . . . . . . . . . . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 14
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". XMPP on the other hand, has, from its
Jabber days, been mostly used for instant messaging and presence
[RFC6121], as well as related services such as groupchat rooms
[XEP-0045].
For various reasons, these trends have continued through the years
datatracker.ietf.org