> What should be the behavior of SBC01? > > - It should send an ACK to SBC02 for the 200OK > for Invite & send a Bye immediately after that. > - It should have send a 487 towards the client > > Is my understanding right?
As mentioned within RFC 7092, there are numerous types of B2BUAs. Some will behave the same or similar to your understanding. Others will behave exactly like a proxy would behave during the race condition. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors