Hi All,
I am not sure how a user agent should reject an offer when:
UA "A" and UA "B" are in call and they have negotiated an audio session.
UA "A" sends re-INVITE request to "B" with SDP that rejects the media by
setting the port number to 0. UA "A" adds another media to the SDP offer
that "B" understand but can not accept.
1. When UA "A" should release the resource used for the media
stream?
a. when an sdp answer from "B" is received
b. when "A" sends the sdp offer.
2. What B will do in this situation?
a. Will send sdp answer with all media ports set to 0?
Should B close the dialog
b. Will send 488 response
i.
A will close the dialog
ii. A
and B will continue the dialog and will use already negotiated media
stream
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