Yes, Notify alone is enough to establish dialog in UAC. -Rockson
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of dushyant Sent: Wednesday, September 17, 2008 3:53 PM To: [email protected] Subject: [Sip-implementors] Query related to Subscribe - Notify dialog Hi All, I have a query related to Subscribe - Notify dialog. RFC 3265 says - 3.3.4. Dialog creation and termination If an initial SUBSCRIBE request is not sent on a pre-existing dialog, the subscriber will wait for a response to the SUBSCRIBE request or a matching NOTIFY. Does that mean once UAC receives Notify for a dialog, 2xx-6xx response is not required for completion of the dialog? Consider a scenario, 1. UAC sends SUBSCRIBE 2. UAS send 200 OK but this gets lost in the network. 3. UAS creates the dialog on its side. 4. UAS sends NOTIFY, UAC receives the same. My question is should UAC wait for 2xx? If yes, what should be the behavior of UAC on timeout? If the behavior of UAC is to terminate the dialog, should it send a SUBSCRIBE (with expires = 0) to end the dialog? Dushyant P S Dhalia _______________________________________________ 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
