> It is valid to send subsequent provisional response > without SDP when previous provisional response has > SDP in it.
Yes. > Does any RFC allow/block above flow. Nothing blocks it. Among other potential references, RFC 3262 discusses periodic reliable responses. This can be situation where the first reliable response contains an SDP and the second reliable response would not contain an SDP. The following are some other offer/answer related RFCs of potential interest: RFC 6337, RFC 3261, RFC 3311, RFC 3960, RFC 3959, RFC 3264 and RFC 6141. > Will this differ if 2nd provisional response is different, i.e. It is also valid. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
