Ken:

That sounds like a generic caller ID server. There were two versions, 4 line and 8 line. The lines are parallel-connected to them and to the KSU line ports, then a serial connection is made between the unit and the KSU.

Is it ivory colored with 4-8 RJ11's on the back and DIP switches on the front? If so, then that's what you have. They were marketed by Comdial, Vodavi, Sprint and Fujitsu, among several other brands. The 9-line version that's being sold by X-Blue is compatible.


Ed Vaughn, MBSWWYPBX