Problems description: 3CX server -> local ip 192.168.0.1 linksys gateway -> local ip 192.168.0.252 mikrotik router -> local ip 192.168.0.254 -> internet ip 193.227.*.* My mobile phone -> 10.54.*.* (local address) My mobile provider -> router 212.10.*.* I want to connect to 3CX from my Nokia N95. When connecting from local wifi, everithing is working fine, but when I try to connet from T-mobile's HSDPA there is a problem. It registers succesfully, but when creating audio channel, 3CX uses the wrong IP number 10.54.*.* to reach the phone. Any suggestion?