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A Presence Event Package for the Session Initiation Protocol (SIP) (RFC3856)

IP.com Disclosure Number: IPCOM000030838D
Original Publication Date: 2004-Aug-01
Included in the Prior Art Database: 2019-Feb-11
Document File: 27 page(s) / 40K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Rosenberg: AUTHOR

Related Documents

10.17487/RFC3856: DOI

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. [STANDARDS-TRACK]

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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 [Page 1]

RFC 3856 SIP Presence August 2004

6.8. Subscriber Processing of NOTIFY Requests .............. 13 6.9. Handling of Forked Requests ........................... 13 6.10. Rate of Notifications ................................. 14 6.11. State Agents .......................................... 14 6.11.1. Aggregation, Authentication, and Authorization. 14 6.11.2. Migration ..................................... 15 7. Learning Presence State ..................................... 16 7.1. Co-location ........................................... 16 7.2. REGISTER .............................................. 16 7.3. Uploading Presence Documents .......................... 17 8. Example Message Flow ........................................ 17 9. Security Considerations ........................................

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