RFC 3856 (rfc3856) - Page 1 of 27

A Presence Event Package for the Session Initiation Protocol (SIP)

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Network Working Group                                       J. Rosenberg
Request for Comments: 3856                                   dynamicsoft
Category: Standards Track                                    August 2004


   A Presence Event Package for the Session Initiation Protocol (SIP)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).

Abstract

   This document describes the usage of the Session Initiation Protocol
   (SIP) for subscriptions and notifications of presence.  Presence is
   defined as the willingness and ability of a user to communicate with
   other users on the network.  Historically, presence has been limited
   to "on-line" and "off-line" indicators; the notion of presence here
   is broader.  Subscriptions and notifications of presence are
   supported by defining an event package within the general SIP event
   notification framework.  This protocol is also compliant with the
   Common Presence Profile (CPP) framework.

Table of Contents

   1.  Introduction ................................................   2
   2.  Terminology .................................................   3
   3.  Definitions .................................................   3
   4.  Overview of Operation .......................................   4
   5.  Usage of Presence URIs ......................................   6
   6.  Presence Event Package ......................................   7
       6.1.  Package Name ..........................................   8
       6.2.  Event Package Parameters ..............................   8
       6.3.  SUBSCRIBE Bodies ......................................   8
       6.4.  Subscription Duration .................................   9
       6.5.  NOTIFY Bodies .........................................   9
       6.6.  Notifier Processing of SUBSCRIBE Requests .............   9
             6.6.1. Authentication .................................  10
             6.6.2. Authorization ..................................  10
       6.7.  Notifier Generation of NOTIFY Requests ................  11



Rosenberg                   Standards Track
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