Hi 481 can definitely not be sent, you don't send responses for a response. IMO, UAC should ignore it as a stray message.
Regards, Tarun Gupta -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ashish Vyas Sent: Wednesday, May 25, 2011 12:53 PM 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 "DISCLAIMER: This message is proprietary to the Aricent Group and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. The Aricent Group accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus." _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
