Hi Shivam , maddr is used for SIP multicasting. In some rfc 2543 implementations it had been used to force an alternative route to the the one specified in R-URI, however , this is discouraged by the 3261 spec and the loose-routing mechanism is provided instead. Please refer to sections 18.1.1 and 18.2.2 of RFC 3261 .. also these two threads may prove useful
http://www1.ietf.org/mail-archive/web/sip/current/msg07554.html http://lists.cs.columbia.edu/pipermail/sip-implementors/2003-September/00547 1.html maddr is listed as an optional parameter to contact , but i am not sure about the scenarios wherein an UAC might like to be contacted at a multicast address , and what implementation issues may arise out of it. Would be interested if some body can throw some light on it :) Cheers , Sayan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of shivam Sent: Monday, November 29, 2004 4:01 PM To: [EMAIL PROTECTED] Subject: [Sip-implementors] maddr parameter Hi all, I would like to know what does "maddr" parameter signifies ? When used in the Contact header ,what does it signify? Thanx in advance. Warm Regards Shivam _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
