Miscellanoues Capabilities Negotiation in the Session Description Protocol (SDP)
draft-ietf-mmusic-sdp-miscellaneous-caps-02

The information below is for an old version of the document
Document Type Active Internet-Draft (mmusic WG)
Last updated 2012-10-15
Replaces draft-garcia-mmusic-sdp-miscellaneous-caps
Stream IETF
Intended RFC status (None)
Formats pdf htmlized bibtex
Reviews
Stream WG state WG Consensus: Waiting for Write-Up
Revised I-D Needed - Issue raised by WGLC
Document shepherd Flemming Andreasen
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
MMUSIC WG                                               M. Garcia-Martin
Internet-Draft                                                  Ericsson
Intended status: Standards Track                         S. Veikkolainen
Expires: April 17, 2013                                            Nokia
                                                               R. Gilman
                                                        October 14, 2012

   Miscellanoues Capabilities Negotiation in the Session Description
                             Protocol (SDP)
              draft-ietf-mmusic-sdp-miscellaneous-caps-02

Abstract

   SDP has been extended with a capability negotiation mechanism
   framework that allows the endpoints to negotiate transport protocols
   and attributes.  This framework has been extended with a media
   capabilities negotiation mechanism that allows endpoints to negotiate
   additional media-related capabilities.  This negotiation is embedded
   into the widely-used SDP offer/answer procedures.

   This memo extends the SDP capability negotiation framework to allow
   endpoints to negotiate three additional SDP capabilities.  In
   particular, this memo provides a mechanism to negotiate bandwidth
   ('b=' line), connection data ('c=' line), and titles ('i=' line for
   each session or media).

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 http://datatracker.ietf.org/drafts/current/.

   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 April 17, 2013.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Garcia-Martin, et al.    Expires April 17, 2013                 [Page 1]
Internet-Draft     SDP Misc. Capabilities Negotiation       October 2012

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   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.

Garcia-Martin, et al.    Expires April 17, 2013                 [Page 2]
Internet-Draft     SDP Misc. Capabilities Negotiation       October 2012

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Conventions Used in This Document  . . . . . . . . . . . . . .  4
   3.  Protocol Description . . . . . . . . . . . . . . . . . . . . .  4
     3.1.  Extensions to SDP  . . . . . . . . . . . . . . . . . . . .  4
       3.1.1.  Bandwidth Capability . . . . . . . . . . . . . . . . .  7
       3.1.2.  Connection Data Capability . . . . . . . . . . . . . .  9
       3.1.3.  Title Capability . . . . . . . . . . . . . . . . . . . 11
     3.2.  Session Level versus Media Level . . . . . . . . . . . . . 14
     3.3.  Offer/Answer model extensions  . . . . . . . . . . . . . . 15
       3.3.1.  Generating the Initial Offer . . . . . . . . . . . . . 15
       3.3.2.  Generating the Answer  . . . . . . . . . . . . . . . . 15
       3.3.3.  Offerer Processing of the Answer . . . . . . . . . . . 15
       3.3.4.  Modifying the Session  . . . . . . . . . . . . . . . . 15
   4.  Field Replacement Rules  . . . . . . . . . . . . . . . . . . . 16
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 16
     5.1.  New SDP Attributes . . . . . . . . . . . . . . . . . . . . 16
     5.2.  New Option Tags  . . . . . . . . . . . . . . . . . . . . . 17
Show full document text