They don't have to contain the same values. RFC 3261 sections 20.20, 20.10, and 20.42 describe the purpose of the headers.
-----Original Message----- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Anjan Naik Sent: Tuesday, August 05, 2014 5:18 AM To: sip-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] what is the significant of IP address present in FROM, CONTACT & VIA Header HI All, Can anyone explain me , what is the significant of IP address present in FROM, CONTACT & VIA Header ? As all the header contains the same caller IP Address when INVITE being initiated. Thanks, Anjan _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
