Lets say A sends an initial SDP offer 1 to B. B accepts the offer and sends an SDP answer 1 back to A. Later, A wants to modify the session and sends an updated offer 2 (based on previous SDP i.e. SDP offer 1) to B. B rejects the offer using a SIP 4xx response. The session is not modified. Again after some time A wants to modify the session. What is the previous SDP for A now: is it SDP offer 1 (which was accepted) or SDP offer 2 (which was rejected)?
Also, SIP can be used to reject an SDP offer. How can an SDP answer be rejected? The answerer has changed its view of the session when it sends the answer. What if the offerer does not like the answer and rejects it (how is this done?). The 2 agents then have a differing view of the session. Am I missing something here? Thanks, -Ravi. _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
