If "some error response" is the final response then you can't send CANCEL. If that re-INVITE is for "session-timer" re-INVITE probably you need to clear the call by sending BYE. If that re-INVITE is for session modification ( change in SDP ) then call need to fall back with earlier connected SDP.
Hope that helps. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sweeney, Andrew (Andrew) Sent: Friday, May 19, 2006 8:16 AM To: '[email protected]' Subject: [Sip-implementors] Cancelling a Re-Invite?? Is it valid to cancel a re-invite as in the call flow shown below? I have never seen it. I though Cancels were only sent before a dialog was established. Thanks Andy LOCAL-SIP REMOTE-SIP INVITE ---------------------> 180 <--------------------- 200 <--------------------- ACK ----------------------> (re)INVITE <--------------------- some error response ----------------------> CANCEL <--------------------- 200 ---------------------> 487 ---------------------> ACK <-------------------- BYE <-------------------- _______________________________________________ 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
