How about if somebody moves a SIP phone from one location to the other and connected to the network. SIP Phone is going to send new REGISTER message with new contact. Is not the new binding should replace the old binding if the REGISTER message contains the same old call id?
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sanjay Sinha (sanjsinh) Sent: Tuesday, November 07, 2006 1:39 PM To: Prasad, Santosh; [email protected] Subject: Re: [Sip-implementors] Adding Bindings rfc3261 sec10.2.1 I think registrar should create a separate binding when user register with a different ip address/port combination. >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of >Prasad, Santosh >Sent: Tuesday, November 07, 2006 12:12 PM >To: [email protected] >Subject: [Sip-implementors] Adding Bindings rfc3261 sec10.2.1 > >WRT RFC 3261 sec 10.2.1 Adding Bindings > > > >My question is should the SIP Registrar create two bindings in >the database for Registration with same user-id but different >IP Port combination (IP being in the same subnet or NAT )? >This is not scenario for forking at multiple AOR. > > > >The following flow describes an issue whereby calls made to a >user that had been logged out from one Machine (IP:Port) as >he/she logged in from a different Machine (IP:Port) fails. >Please see the steps below: > >Machine A and B are behind same NAT device > >Machine A points to Proxy 1 say EP01 > >Machine B points to Proxy 2 say EP02 > > >At time t0 - User 'abc' logs into SIP server (EP01) from Machine 'A'. > >At time t1 - User 'abc' logs into SIP server (EP02 )from Machine 'B'. >At time t2 - The Presence server realizes that this user 'abc' >is logged in at another location, so the Presence server >indicates user 'abc' on Machine 'A' to logout informing him >that he is logged in at another location and the client also >will log user out of SIP server. > >At time t3 - user 'def' tries to call user 'abc', the call >request fails. > > > >This is what I see in DB > > > >At time t0 there is an entry [EMAIL PROTECTED]:PortA > >At time t1 the entry gets updated with [EMAIL PROTECTED]:PortB --> There >should be two bindings as this is a new Registration from >different IP:Port but (IP being in the same subnet)? > >At time t2 there is a request from Machine A to logout >(De-Register) [EMAIL PROTECTED]:PortA but the SIP Registrar removes [EMAIL >PROTECTED]:PortB > >I see from the logs that the application doesn't create new >binding or entry in DB when the User 'abc' logs from Machine >'B' (at time t1) it overrides the old IP port. So at time >instance t2 there is no entry in the database > > > >But the client is logged in on Machine B and can originate the >call but cannot receive any calls. > > > > > >Thanks for your time. > > > >Regards, > >Santosh Prasad > > > >_______________________________________________ >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 This email and any attached files herein contain information that is intended only for the use of the individual or entity to whom it is addressed and may contain information that is legally privileged, confidential or otherwise exempt from disclosure under applicable laws. If the reader of this message is not the recipient, any disclosure, dissemination, distribution, copying or other use or retention of this communication or its substance is prohibited. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
