Its useful in third party registrations. # TCP from 10.10.0.222:12345 to registrar REGISTER sip:registrar SIP/2.0 From: <sip:b...@domain.org> Contact: 10.10.0.111:5060;transport=UDP To: <al...@domain.org>
In the above example, Observe To: is alice AOR. -Somesh -----Original Message----- From: sip-implementors-boun...@lists.cs.columbia.edu on behalf of Iñaki Baz Castillo Sent: Fri 12/12/2008 2:55 PM To: sip-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] Use of REGISTER with Contact different than theUA's contact Hi, I think I already was replied to a similar question but unfortunatelly I don't find it. The question is: when/where is useful sending a REGISTER with a Contact different than the UA's contact? For example: Phone1: - AoR: al...@domain.org - Listen: 10.10.0.111:5060;transport=UDP Phone2: - AoR: b...@domain.org - Listen: 10.10.0.222:5060;transport=TCP Now Phone2 sends a REGISTER like: # TCP from 10.10.0.222:12345 to registrar REGISTER sip:registrar SIP/2.0 From: <sip:b...@domain.org> Contact: 10.10.0.111:5060;transport=UDP I think this is useful in IMS, am I right? what for exactly? any other case? Thanks a lot. -- Iñaki Baz Castillo <i...@aliax.net> _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors EMAIL DISCLAIMER : This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any unauthorised distribution or copying is strictly prohibited. If you receive this transmission in error, please notify the sender by reply email and then destroy the message. Opinions, conclusions and other information in this message that do not relate to official business of Mascon shall be understood to be neither given nor endorsed by Mascon. Any information contained in this email, when addressed to Mascon clients is subject to the terms and conditions in governing client contract. Whilst Mascon takes steps to prevent the transmission of viruses via e-mail, we can not guarantee that any email or attachment is free from computer viruses and you are strongly advised to undertake your own anti-virus precautions. Mascon grants no warranties regarding performance, use or quality of any e-mail or attachment and undertakes no liability for loss or damage, howsoever caused. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
