A new Request for Comments is now available in online RFC libraries.
RFC 4508
Title: Conveying Feature Tags with the
Session Initiation Protocol (SIP) REFER Method
Author: O. Levin, A. Johnston
Status: Standards Track
Date: May 2006
Mailbox: oritl@microsoft.com,
ajohnston@ipstation.com
Pages: 6
Characters: 11338
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-sip-refer-feature-param-01.txt
URL: http://www.rfc-editor.org/rfc/rfc4508.txt
The SIP "Caller Preferences" extension defined in RFC 3840 provides a
mechanism that allows a SIP request to convey information relating to
the originator's capabilities and preferences for handling of that
request. The SIP REFER method defined in RFC 3515 provides a mechanism
that allows one party to induce another to initiate a SIP
request. This document extends the REFER method to use the mechanism
of RFC 3840. By doing so, the originator of a REFER may inform the
recipient as to the characteristics of the target that the induced
request is expected to reach. [STANDARDS TRACK]
This document is a product of the Session Initiation Protocol
Working Group of the IETF.
This is now a Proposed Standard Protocol.
STANDARDS TRACK: 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
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USC/Information Sciences Institute
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