MMUSIG WG Meeting Summary
=========================

The MMUSIC WG met once at the 50th IETF (Thu 1530-1730).  The meeting
was chaired by Colin Perkins and Joerg Ott and was attended by some
60 participants.  It is noted that MMUSIC was scheduled in parallel
to SIMPLE despite both WGs requested non-overlap with the other; this
way core core contributors to both groups had to decide on one of
them.

Joerg gave a brief update on the WG status: the ATM extensions for SDP
are now with the RFC editor, the Multimedia Conferencing Architecture
is going to historical.  The Mbus transport will be re-submitted
shortly and then be Last Called for Experimental.  Work on RTSP is
continuing; an update will be given at the next IETF.  As per
discussion with the ADs, conference control (which has been on the
charter with little interest from the community for many years) is
considered out of the scope of MMUSIC.  Joerg noted recently growing
interest in this area; interested parties are requested to consult
with the MMUSIC chairs and the Transport ADs for initiating work on
this subject in the IETF.

Colin briefly summarized the revision process of SDP (RFC 2327); he
has received little input on corrections to SDP since the last IETF.
People are requested to provide detailed wording changes.  Issues were
raised during the meeting on the IPv6 address format and on the SDP
grammar in general.

Fleming Andreasen presented his progress on the simple capability
negotiation mechanism for SDP -- now consisting of a requirements
document draft-andreasen-mmusic-sdp-simcap-reqts-00.txt (and the
specification itself (draft-andreasen-mmusic-sdp-simcap-01.txt) , as
agreed at the 49th IETF.  WG Last Call will be issued on the
specification document shortly.

Gonzalo Camarillo discussed the changes to the Flow ID specification
(draft-ietf-mmusic-fid-00.txt).  The optimization portion will be
removed from the document since it would be in conflict with the
latest revisions of the SIP spec.  Gonzalo will resubmit the document
in the weeks to come; a WG Last Call will follow.

Joerg urged that, besides the two current SDP additions that are close
to finalization, no further modifications shall be made to SDP;
instead, only SPDng shall be used to gain additional functionality.

Dirk Kutscher discussed the (sligtly revised) requirements of SDPng; 
the document (draft-ietf-mmusic-sdpng-req-00.txt) incorporates various
comments received since the last IETF.  Further comments received at
this meeting will be included in the next revision.  It was noted that
the MEGACO WG is to contribute its own requirements on SDPng.

Dirk then outlined a first cut at the XML-based syntax proposal.  This
document did not make the Internet Draft deadline but will be
submitted soon after the meeting in its initial revision.  Concern was
raised during the meeting on message size and processing power,
memory, etc. requirements in devices required to parse or generate
XML.  The authors pointed out that those aspects are being addressed.
Contributions are solicited.