The FS box is assigned public IP address via a router in bridge mode (DMZ plus). The router (Draytek) which the polycoms are connected to is also connected to the same router in bridge mode. The reason why I have it this way is because I have a remote polycom phone which seems to be registering OK.
This set worked great on my old broadband provider and for around 5 days with the new provider.

example-
polycom phone(192.168.101.16) <--> Router(81.137.114.169) <--> (bridged modem) <--> INTERNET
FS box (81.137.114.171) -----------------------------------------------------------(bridged modem) <--> INTERNET

gateway = 81.137.114.174
subnet = 255.255.255.248

Lloydie T

On 22 December 2011 22:42, Michael Collins <msc@freeswitch.org> wrote:
What's your topology here? Is FS on public IP or behind NAT? Are the Polys on same network as FS? If not, are they behind NAT?

-MC

On Tue, Dec 20, 2011 at 10:03 AM, lloyd thomas <lloydie.t@gmail.com> wrote:
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

   ------------------------------------------------------------------------

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_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

FreeSWITCH-powered IP PBX: The CudaTel Communication Server
http://www.cudatel.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://wiki.freeswitch.org
http://www.cluecon.com

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