A Presence Event Package for the Session Initiation Protocol
RFC 3856, “A Presence Event Package for the Session Initiation Protocol”, is a Proposed Standard document published in August 2004 by J. Rosenberg. It has since been updated by RFC 8996. The canonical text is published by the RFC Editor.
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]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 3856 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 3855 Transporting Secure/Multipurpose Internet Mail Extensions Objects in X.400
- RFC 3857 A Watcher Information Event Template-Package for the Session Initiation Protocol
- RFC 3854 Securing X.400 Content with Secure/Multipurpose Internet Mail Extensions
- RFC 3858 An Extensible Markup Language Based Format for Watcher Information
- RFC 3853 S/MIME Advanced Encryption Standard Requirement for the Session Initiation Protocol
- RFC 3859 Common Profile for Presence
- RFC 3852 Cryptographic Message Syntax
- RFC 3860 Common Profile for Instant Messaging