Hello I have the following flow and the question at the end. A side makes call (among other things asks for timer) Side B sends 183 with SDP Answer then some procedures take place sends 180 Ringing without SDP answer then sends UPDATE with new SDP offer waits for 200OK
All is well but what happens with the Session Timer response? Is it placed as a new Request in UPDATE or 200(INV) or perhaps? Also can B side say refresher=uac equivalent to refresher=uas that it would send in 200OK(INV)? A B | ---------> | | INV SE: xx, SDPO1 | | | | <--------- | | 183 SP, SDPA1 | B side is planning to send Session Timer in 200(INV) | | | ---------> | | PRACK | | | | <--------- | | 200 OK | | | | <--------- | due to special conditions 180 Ringing (no SDP) is also sent | 180 Ring no SDP | | | | ---------> | | PRACK | | | | <--------- | | 200 OK | | | | <--------- | and then also UPD is sent with SDP Offer 2 | UPD SE: xx, SDPO2 | should we have a SE header here, | | based on the one in the INV | ---------> | also can we have refresher=uac? | 200 OK,, SDPA2 | | | | <--------- | | 200 OK (INV) | or here? | | (or perhaps above in 183 or 180?) thanks Manolis _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
