Had to replace the hard drive and reprogram from scratch.#1 issue is the door entry system which has its own dial tone to it.To reach company "A" you simply dial 101.with the fresh hard drive it will ring the intrcom of the operator ext.I want to program it to ring other ext's.My question is:How can I tell which DID the door box is calling.CID shows the number from the box and the trk 065. there is only a PRI in it.