after change Public ip no incoming calls

[jensnb]

Hello this is my problem,
i have an dynamic ip and the provider is 1und1, when the ip is changing i have no incoming calls, outgoing after stun check is ok. I must manual registering the VOIP Lines, then it ist working. Can I make this automatic after IP change?

Here is my log

15:20:21.296 StunClient:rocess [CM506003]: Resolved SIP external IPort has changed to (84.188.44.57:5060) on Transport 10.0.0.10:5060
15:20:21.250 StunClient:nInitTests [CM506001]: STUN request to resolve SIP external IPort mapping is sent to STUN server 212.227.15.200:3478 over Transport 10.0.0.10:5060

 

[jensnb]

The 3CX Version is 3CXPhoneSystem 5.1.4287.0

 

[jensnb]

Hi,
the Server is behind a gateway (NAT) is this the problem?

sorry for my bad english (german)