491 is apt for re-Invite and UPDATEs as it was introduced to handle glare conditions. It may be applicable for reSUBSCRIBE/NOTIFY also. But I don't think REGISTER and BYE fall in this category. 491 is for pending request within the same dialog and it doesn't apply for REGISTER, as it doesn't create a dialog. If BYE messages are crossed over wire, both sides understand the intention of terminating the dialog and there is no need to respond with 491.
-Ramakrishna -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of George Petrov Georgiev Rusiichev Sent: Monday, October 10, 2005 3:12 PM To: [email protected] Subject: [Sip-implementors] 491 (Request Pending) question Hi all, I want to ask a trivial question - just would like to see some others opinion: In RFC 3261 491 (Request Pending) is defined only for re-INVITE, also in the same mechanism is reused in RFC 3311 (UPDATE Method) My question : is the any practice 491 to be used for some other reuests and in other situations e.g. what should be the behaviour of UAS which receive 491 in responce to it's REGISTER or .. BYE for example? I think default 4xx behaviour? _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors Confidentiality Notice The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Wipro or [EMAIL PROTECTED] immediately and destroy all copies of this message and any attachments. _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
