No, the proxy does not send a 487 response. When timer B fires, the proxy sends a 408 response to the INVITE back to the UAC.
cheers, (-:bob -----Original Message----- From: Klaus Darilion [mailto:[EMAIL PROTECTED] Sent: Friday, March 07, 2008 5:21 PM To: Bob Penfield Cc: [email protected] Subject: Re: [Sip-implementors] CANCEL retransmisson question of no provisional response! Bob Penfield wrote: > The INVITE transaction must still complete independent of the CANCEL. > So the proxy would continue to re-transmit the INVITE. If the proxy > does receive a provisional response, it would then stop > retransmissions and send the CANCEL down stream. If timer B fired, it > would send a 408 response to the INVITE. > > Note that the proxy should respond to the CANCEL with 200 OK when it > receives it since the INVITE transaction is in progress. Does this mean that the proxy must reply 487 to the INVITE but must delay the response until B fires (in case of the callee never sends an initial response)? regards klaus _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
