I have a CS1000E and a CS1000M connected via a standard T1 Tie line. Out of now where last week when dialing a 4 digit call across the Tie line, the CS1000E does not show the CPND anymore on a outbound call, or when calling it from the CS1000M end. It will show the 4 digits and that is all. I res-set the DCH and it made no difference. Both systems are release 5.0. The Deplist is a couple of months old, but when searching the ESPL site I didn't see anything that would pertain to this problem.