A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiparty Multimedia Session Control Working Group of the IETF.
Title : Negotiating Media Multiplexing Using the Session Description Protocol (SDP)
Authors : Christer Holmberg
Harald Tveit Alvestrand
Cullen Jennings
Filename : draft-ietf-mmusic-sdp-bundle-negotiation-13.txt
Pages : 48
Date : 2014-12-08
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 address:port combination (BUNDLE address) for receiving media,
referred to as bundled media, associated with multiple SDP media
descriptions ("m=" lines).
To assist endpoints in negotiating the use of bundle this
specification defines a new SDP attribute, 'bundle-only', which can
be used to request that specific media is only used if bundled. This
specification also updates sections 5.1, 8.1 and 8.2 of RFC 3264 to
allow an answerer to assign a non-zero port value to an "m=" line in
an SDP answer, even if the "m=" line in the associated SDP offer
contained a zero port value.
There are multiple ways to correlate the bundled RTP packets with the
appropriate media descriptions. This specification defines a new
RTCP source description (SDES) item and a new RTP header extension
that provides an additional way to do this correlation by using them
to carry a value that associates the RTP/RTCP packets with a specific
media description.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mmusic-sdp-bundle-negotiation/
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-mmusic-sdp-bundle-negotiation-13
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-ietf-mmusic-sdp-bundle-negotiation-13
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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