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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the SIP for Instant Messaging and Presence Leveraging Extensions Working Group of the IETF.
Title : Session Initiation Protocol (SIP) Extensions for
Author(s) : J. Rosenberg
Filename : draft-ietf-simple-presence-07.txt
Pages : 26
Date : 21-May-02
This document describes the usage of the Session Initiation Protocol
(SIP) for subscriptions and notifications of user presence. User
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 user
presence are supported by defining an event package within the
general SIP event notification framework. This protocol is also
compliant with the Common Presence and Instant Messaging (CPIM)
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