Since registration just creates a transaction ( unlike INVITE or SUBSCRIBE which will create dialog/session etc ) which is destroyed after receiving a final response and expiry of associated transaction timers to handle duplicate REGISTERs.
Keeping the call-id is the way to differentiate the new registration with the registration re-fresh ( if the call-id is same and the branch id is different then it is a registration re-fresh). That is what I think is one of the reasons for keeping the call-id same. Regards, Indresh >>-----Original Message----- >>From: [EMAIL PROTECTED] >>[mailto:[EMAIL PROTECTED] On Behalf >>Of ext sumanth achar >>Sent: Monday, June 04, 2007 1:34 PM >>To: [email protected] >>Subject: [Sip-implementors] call-id in register >> >>Hi, >> i want to know why call-id has to be same for all the register >>message from a particular UAC. >> >>Thanks, >>Sumanth >>_______________________________________________ >>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
