Hi, everybody! Is it legitimate for UAS to request reliable provisional response option after receiving INVITE without Required or Supported headers.
In my case the flow is like this Inv (no 100Rel*)-> <-100 Trying <- 180 Trying (no 100Rel) ** <-INFO (Required:100Rel) 200OK(no 100Rel) ............ * - Means no 100Rel indication in the message ** - At this moment UAS (which is actually a B2BUA) establishes a session with another proxy where it uses 100Rel and now it is trying to "back-enable" 100Rel in our call leg. So is it OK for UAC to answer 200OK to INFO without 100Rel indication? Or should it send 200OK with Req:100Rel and then initiate reliable prov. Response procedure? Thanks in advance to every answerer. Mike _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
