I have a user that when he calls from his home phone cannot dial his ext. He calls in on a number we have setup for family, etc. to call. Call comes in transfers to our AA(unity). He is then prompted to put in the ext he would like to dial. When he dials 390 the call fails. If he dials 391 or 315 call connects. If he dials 290 or 490 call fails. On the failures he hears a message that it is not a valid ext. If I call from a cell phone or other landlines and dial the same ext it works. Does anyone know how I could see what digits unity is receiving when he dials the ext?