I had what I thought was the perfect set up on my FS box. Until I changed internet provider (BT) All was fine for a week but all of a sudden some of my Polycom phones won't register. The polycom phones are behind a NAT and my FS box is on a static IP address. I am using a multi company setup One of my polycom phones seems to register OK Using 'sofia profile xxxxxxxx siptrace on' I can see that one of my polycom phones will not register because FS is trying to send replies to the private IP address (192.168.101.16) Any Ideas? Am I missing something in one of the profiles Good one ------------------------------------------------------------------------ send 702 bytes to udp/[87.194.242.110]:65004 at 17:49:32.226606: ------------------------------------------------------------------------ SIP/2.0 200 OK Via: SIP/2.0/UDP 87.194.242.110:65004;branch=z9hG4bK15c264eE5B5988B From: "Suze" <sip:200@suze.tele.phisys.net>;tag=CA76AF43-ED2A5944 To: <sip:200@suze.tele.phisys.net>;tag=7Uy88X4pc8yHc Call-ID: 918d5430-ffb07455-eb2121fe@87.194.242.110 CSeq: 888 REGISTER Contact: <sip:200@87.194.242.110:65004>;methods="INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY, PRACK, UPDATE, REFER";expires=30 Date: Tue, 20 Dec 2011 17:49:32 GMT User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-2c009dd 2011-03-15 14-29-04 -0500 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY Supported: timer, precondition, path, replaces Content-Length: 0 ------------------------------------------------------------------------- Bad one ------------------------------------------------------------------------ send 680 bytes to udp/[81.137.114.169]:5060 at 17:50:17.659167: ------------------------------------------------------------------------ SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP 192.168.101.16:5060 ;branch=z9hG4bK2b8f42dA63D9E42;received=81.137.154.169 From: "Lloyd" <sip:200@phisys.tele.phisys.net>;tag=621EA6CE-AF1D573 To: <sip:200@phisys.tele.phisys.net>;tag=aQaKeFQ13219e Call-ID: 52e98627-d24590dc-528d7361@192.168.101.16 CSeq: 1 REGISTER User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-2c009dd 2011-03-15 14-29-04 -0500 Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY Supported: timer, precondition, path, replaces WWW-Authenticate: Digest realm="phisys.tele.phi.co.uk", nonce="1319a358-2b33-11e1-b5e4-dd1099e4b2d2", algorithm=MD5, qop="auth" Content-Length: 0 ------------------------------------------------------------------------