by leejor » Wed Jan 18, 2012 10:59 pm
It may have something to do with how you receive outside calls ,something must have changed for it to stop working all of a sudden. Do you use a PSTN Gateway, VoIP provider, ISDN Gateway???
If you call in to an extension (from outside), answer and have the caller press some digits, do you hear them? Are they just short bursts or do the last as long as the key is held down?