I am experiencing a problem with the port analog interface board, usually when an internal extension this free, lifting the tube gives you continuous tone for unwanted calls. I have some extensions that by lifting the tube gives a busy tone but can call an internal extension desired, but this failure disables the SIP communication to call for an extension of another PBX2. This occurs only in the main PBX1.
Can anybody tell me if there is any way to reset the port or because I'm having these problems?
Greetings and from already thank you very much!:)