RFC 4976 on Relay Extensions for the Message Sessions Relay Protocol (MSRP)

A new Request for Comments is now available in online RFC libraries.

        RFC 4976

        Title:      Relay Extensions for the Message 
                    Sessions Relay Protocol (MSRP) 
        Author:     C. Jennings, R. Mahy,
                    A. B. Roach
        Status:     Standards Track
        Date:       September 2007
        Mailbox:    fluffy@cisco.com, 
                    rohan@ekabal.com, 
                    adam@estacado.net
        Pages:      36
        Characters: 84244
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-simple-msrp-relays-10.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4976.txt

Two separate models for conveying instant messages have been defined.
Page-mode messages stand alone and are not part of a Session
Initiation Protocol (SIP) session, whereas session-mode messages are set
up as part of a session using SIP.  The Message Session Relay Protocol
(MSRP) is a protocol for near real-time, peer-to-peer exchanges of
binary content without intermediaries, which is designed to be
signaled using a separate rendezvous protocol such as SIP.  This
document introduces the notion of message relay intermediaries to MSRP
and describes the extensions necessary to use them.  [STANDARDS TRACK]

This document is a product of the SIP for Instant Messaging and Presence 
Leveraging Extensions 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 unlimited.

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