I've got an issue with a phone going straight to the intercom. I have an NEC NEAX 2000 IVS2. The previous phone guy left some notes on what to do. It said to go to command 200, chose A1 and scroll down until you get to A163 (which is A2 in our case so I didn't have to scroll very far). I can't seem to do anything from there though. Anytime I try to do anything I get a Data Error or a Digit Error.