Hi,
There is one SIP call scenario that one SIP UA sends one reliable 183 to one SIP device, and the UA receives the PRACK, then, it sends 200OK of PRACK and one new reliable 180 immediately. All the messages are sent over UDP, due to the network issue, the SIP device receives the 2nd reliable 180 ahead of PRACK's 200OK. Now, I find the SIP device can't handle the case, and I have to prove that current case should be handled by it well. I looked through RFC3262 and not find it clarify the case clearly. So, is there any other RFC or SPEC which describe it? Thanks, JC _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors