Protocol Action: SDP: Session Description Protocol to Proposed Standard

[The IESG <iesg-secretary at ns.ietf.org>]

The IESG has approved the Internet-Draft SDP: Session Description
Protocol <draft-ietf-mmusic-sdp-07.txt,.ps> as a Proposed Standard.  This
document is the product of the Multiparty Multimedia Session Control
Working Group.  The IESG contact persons are Allyn Romanow and Scott
Bradner.


Technical Summary


Session Description Protocol (SDP) describes a format for describing
real-time multimedia sessions. SDP is widely used on the Internet
multicast backbone (Mbone) in a session directory tool which advertises
multimedia conferences and information necessary for participation in
the conference. SDP is intended to be used by different transport
protocols, such as Session Announcement Protocol (SAP), Session
Initiation Protocol (SIP), Real-Time Streaming Protocol (RTSP),
electronic mail using MIME extensions, and the Hypertext Transport
Protocol.


Working Group Summary

SDP has evolved in mmusic and in the user community over several years.
It now widely used and there are no remaining points of contention.

Protocol Quality

This document was reviewed for the IETF by Allyn Romanow.

The following implementations exist:

        UCL/ISI Session Directory tool sdr
        Cisco routers
        CDT mAnnouncer from Lulea University
        Precept Software's IP/TV Program Guide
        ICAST's Viewer and Guide
        the RTSP Reference Implementation
        RealNetwork's RealMedia SDK
        W3C's Jigsaw
        IBM's RTSP Toolkit
        GMD Fokus's SIPD
        Columbia University's jsipd
        UCL's Java Internet Phone
        Mediatrix's Audiotric Phone Adapto