[MMUSIC] Question on draft-ietf-mmusic-sdp-new-10.txt

[fyangyu@sohu.com]

Dear fellows:
 In draft-ietf-mmusic-sdp-new-10.txt page 19, it said "Attribute fields can also be added before the first media field;
these "session-level"attributes convey additional information that applies to the conference
as a whole rather than to individual media; an example might be the conference's floor control policy."
I am interested in describing floor control policy in sdp. But this darft doesn't give a detailed 
example. Where can i find this example? 
 Thank you!
                      Yu feiyang


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