A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session Initiation Protocol Core Working Group of the IETF.
Title : Explicit Subscriptions for the REFER Method
Author : Robert Sparks
Filename : draft-ietf-sipcore-refer-explicit-subscription-00.txt
Pages : 14
Date : 2014-11-21
Abstract:
The Session Initiation Protocol (SIP) REFER request, as defined by
RFC3515, triggers an implicit SIP-Specific Event Notification
framework subscription. Conflating the start of the subscription
with handling the REFER request makes negotiating SUBSCRIBE
extensions impossible, and complicates avoiding SIP dialog sharing.
This document defines extensions to REFER to remove the implicit
subscription and, if desired, replace it with an explicit one.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-sipcore-refer-explicit-subscription/
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-sipcore-refer-explicit-subscription-00
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