Starting about a week ago my 3CX system loses registration with my VoIP Provider. I checked with them and everything is fine on their side. Things i've currently tried: backing up and restoring 3CX (resolved some limit issues ive had in the past. so gave it a shot) No luck uninstalling and reinstalling 3CX (still no avail) Current changes ive made. Ive added the public IP into the Network tab. Dont think this would cause the problem. Setup an external extension phone. Any ideas why this error would occur? Here is what event viewer is telling me. Description: [CM104001]: Registration at 'lax.teliax.com' failed Host 'sipusername)@voip-co4.teliax.com:5060' is not available!