Hi, Following is the call flow (based on the traces taken at UA1 and UA2):
1. UA1 sends offer to UA2 (proxy) 2. UA2 forwards the offer in INVITE to another proxy UA3 3. UA3 answers to the offer with a held SDP in 200 response (because it probably does not yet know who is going to receive the call eventually) 4. UA2 ACKs the 200 response 5. UA3 sends INVITE back to UA2 immediately, this time with an updated SDP. The question is - In response to the last offer by UA3, what should the UA2's reply ? Can it send the same SDP that it had sent in step 2 ? My concern is, if it does so, wouldn't UA3 discard it as a duplicate SDP ? Thanks, Pranab _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
