You have not provided enough information concerning the message flow and what "late 200" means. Did the client send CANCEL? Were any other 101-6xx responses received for the INVITE?
RFC 6026 provides some details and introduces some new timers. > -----Original Message----- > From: [email protected] [mailto:sip- > [email protected]] On Behalf Of Ashish Vyas > Sent: Wednesday, May 25, 2011 3:23 AM > To: [email protected] > Subject: [Sip-implementors] Response to late 200 OK to INVITE > > Dear all > > I am not sure the behaviour of client in this scenario, RFC 3261 was > not clear > to me. > > Say my T1 is 500 ms. > Client sends INVITE to server. Server responds with 100 Trying. Now > after say 60 > seconds server sends 200 OK to client. > Should client ACK this 200 OK? Or should simply ignore? or should it > send 481? > > Thanks > Ashish > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
