MMUSIG WG Meeting Summary

The MMUSIC WG met once at the 52 IETF, for two hours.
The meeting was chaired by Colin Perkins and Joerg Ott;
some 160 people attended the meeting.

The chairs presented the new charter, listing only SDP extensions
within the existing framework, the development of SDPng, and RTSP as
work items.  The goal is to complete the work in 2002.  The meeting
was run following this outline, taking up only existing SDP and SDPng
work items.  For RTSP, the chairs reported that the authors are still
collecting input for the revision and that therefore no revision is
available yet.  The revised SDP spec was reviewed: all changes are
incorporated now and the document should be able to move ahead to
Draft Standard.  It may be useful to cycle Proposed Standard in order
to have an RFC in the short term (so that other documents can
reference it).  An interoperability matrix is required as starting
point to document the existing implementations for the various fields
of SDP.  The following extensions to SDP were discussed: Support for
connection-oriented media is considered almost done except for the use
of one attribute; a revised draft will be submitted soon to go into
Last Call then.  The format extensions for IPv6 seemed to have gotten
lost in the I-D publishing process; the revised draft will be
resubmitted after the IETF and shall be last-called shortly.  Key
management attributes to support e.g. MIKEY were found heading the
right direction; nevertheless, the draft requires some further work
before WG Last Call can be issued.  The SDP extension for NATs has
been accepted; WG Last Call will be issued this week.  The
offer/answer model following which SDP is used by SIP was factored out
of the SIP spec and is now documented in a separate Internet Draft.
A number of issues to be solved/clarified were identified; further
investigation and discussion will be carried out on the mailing list.