2. If the answer to question 1 is YES, then what should UAC do after receiving 200 OK for
INVITE? ACK should be sent first. What next? Should it send a BYE immdiately after ACK? There are various ambiguitites and race conditions in regard to the response that a CANCEL receives. So the UAC should not consider what that response is, but only the final response to the INVITE. If that response is 200, then a dialog is established, and the UAC can terminate it (with a BYE) if it desires to. If that response is 487, then the INVITE was successfully canceled at the UAS, and there is no dialog. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
