Specifications

October, ‘03 Comdial 47
DX-80 Installation & Maintenance
2.7 KSU Components
2.7.1 KSU1 408M AND KSU2 408E
The 408M module is installed at the factory into KSU1. Although this module has the same port con-
figuration as the 408E, they are not interchangeable. Each 408M and 408E is equipped with four CO
line ports, one power failure port, and eight digital extension Ports. See the following diagram to
locate the various ports provided on the 408M/E.
The 408M/E is also the interface point for the various add-on modules of the DX-80 system. All
peripheral modules connect to the DX-80 via the 408M/E. See the following diagram for a reference
to the various interface connectors.
408M: CPM ribbon cable
408E: CPM connector cable,
aprox. 1 meter long to extend
out of KSU2 into KSU1
Voice Processor power
connector
Extension Expansion
module connectors
DPM8 or APM4
COM4 ribbon
connector
APM4 ribbon
connector
8 digital extension ports
KSU1: 101-108
KSU2: 125-132
4 CO line circuits
KSU1: 740-743
KSU2: 748-751
Power Failure
Transfer Port
KSU1: 740
KSU2: 748