Hi All; I search the site find some clue but they havent worked for my case. I want to fill the sent by address while sending the registeration. I tried to set both public and bound addresses but they didnt work. reregisteration only changes the contact ip address if pjsip is behind nat. Any clues about how to set via ip addres Via: SIP/2.0/UDP 1:5060;rport;branch=z9hG4bKPj92512e8c1be842eabc85adf99e5f2058 Regards Muge -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20091030/dcbe2626/attachment.html>