I have a new installation of 3CX. all voice calls work fine with Broadvox sip trunk. However, when using a Patton 4114 FXS box, Broadvox is seeing the private IP address of the patton being sent to them rather than the public address from the 3cx server. Hence, I get no faxes through. internal 3cx IP: 172.16.21.5 - External through firewall is 67.X.X.X internal patton IP 172.16.21.8 any ideas?