Hi, >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)?
SDP offer 1, which was accepted. >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? There is no direct way to reject an answer. So, I guess the offerer can either send a new offer, or terminate the call... Regards, Christer LM Ericsson _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
