Hi Pavitra , This question was answered in this list recently... I have put the excerpts below....
> > I have a question about multicast registrations. > > What is the exact purpose of a multicast registration? Is it only > meant for discovery of Registrars when a UA doesn't have this > information or does it > have any other meaning/use? Discovery is the primary motivation. > In a UA implementation, does the multicast > registration have to be refreshed periodically? Yes. > If yes, won't it cause > traffic issues on the network (more so if the expires header for the > registration request is small). Would really appreciate any input on > this issue. The solution in this case is to have the first registration be multicast, and then the registrar sends a 301 response, pointing the user to a unicast address that it would use for subsequent registrations. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Krishnaswamy, Pavitra Sent: Saturday, June 01, 2002 1:43 AM To: '[EMAIL PROTECTED]' Subject: [Sip-implementors] Multicast Registrations Hi, I have a question about multicast registrations. What is the exact purpose of a multicast registration? Is it only meant for discovery of Registrars when a UA doesn't have this information or does it have any other meaning/use? In a UA implementation, does the multicast registration have to be refreshed periodically? If yes, won't it cause traffic issues on the network (more so if the expires header for the registration request is small). Would really appreciate any input on this issue. Thanks in advance, pavitra Pavitra Krishnaswamy Trillium, An Intel Company 12100 Wilshire Blvd. Los Angeles, CA 90025 http://www.trillium.com [EMAIL PROTECTED] _______________________________________________ Sip mailing list https://www1.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
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