Negotiating Media Multiplexing Using the Session Description Protocol (SDP)
draft-ietf-mmusic-sdp-bundle-negotiation-52

Document Type Active Internet-Draft (mmusic WG)
Last updated 2018-05-24
Replaces draft-holmberg-mmusic-sdp-bundle-negotiation
Stream IETF
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Stream WG state Submitted to IESG for Publication (wg milestone: Oct 2017 - Submit SDP extension... )
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MMUSIC Working Group                                         C. Holmberg
Internet-Draft                                                  Ericsson
Updates: 3264,7941 (if approved)                           H. Alvestrand
Intended status: Standards Track                                  Google
Expires: November 25, 2018                                   C. Jennings
                                                                   Cisco
                                                            May 24, 2018

 Negotiating Media Multiplexing Using the Session Description Protocol
                                 (SDP)
            draft-ietf-mmusic-sdp-bundle-negotiation-52.txt

Abstract

   This specification defines a new Session Description Protocol (SDP)
   Grouping Framework extension, 'BUNDLE'.  The extension can be used
   with the SDP Offer/Answer mechanism to negotiate the usage of a
   single transport (5-tuple) for sending and receiving media described
   by multiple SDP media descriptions ("m=" sections).  Such transport
   is referred to as a BUNDLE transport, and the media is referred to as
   bundled media.  The "m=" sections that use the BUNDLE transport form
   a BUNDLE group.

   This specification updates RFC 3264, to also allow assigning a zero
   port value to a "m=" section in cases where the media described by
   the "m=" section is not disabled or rejected.

   This specification defines a new RTP Control Protocol (RTCP) source
   description (SDES) item and a new RTP header extension that can be
   used to correlate bundled RTP/RTCP packets with their appropriate
   "m=" section.

   This specification updates RFC 7941, by adding an exception, for the
   MID RTP header extension, to the requirement regarding protection of
   an SDES RTP header extension carrying an SDES item for the MID RTP
   header extension.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

Holmberg, et al.        Expires November 25, 2018               [Page 1]
Internet-Draft                Bundled media                     May 2018

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 25, 2018.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
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   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
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   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
     1.1.  Background  . . . . . . . . . . . . . . . . . . . . . . .   4
     1.2.  BUNDLE Mechanism  . . . . . . . . . . . . . . . . . . . .   4
     1.3.  Protocol Extensions . . . . . . . . . . . . . . . . . . .   5
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   8
   4.  Applicability Statement . . . . . . . . . . . . . . . . . . .   8
   5.  SDP Grouping Framework BUNDLE Extension . . . . . . . . . . .   8
   6.  SDP 'bundle-only' Attribute . . . . . . . . . . . . . . . . .   9
   7.  SDP Offer/Answer Procedures . . . . . . . . . . . . . . . . .  10
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