Every 12-16 hours my Voip line unregister and then the automatic registration attempt doesn't work. When i manually click "register the line", the line register without error. This is the log. Code: 3CX Phone System v3.0.1928.0 07:28:57.312 ClientRegs::onFailure Registration of sip:firstname.lastname@example.org has failed; reason=Server Internal Error I have set the option "Time between registration attemps (in seconds)" to 30 sec, but nothing change, the auto reconnection doesn't work. Any suggestion?