Ksu Components - Vertical comdial DX-120 Installation And Maintenance Manual

DX-120 Installation and Maintenance Manual

KSU Components

KSU1, 408M
AND
The 408M module is installed at the factory into KSU1. Although this module has the same port configuration 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-120 system. All peripheral
modules connect to the DX-120 via the 408M/E. See the following diagram for a reference to the various interface
connectors.
APM4 Ribbon Connector
Voice Processor Power
Connector
Extension Expansion
module connectors
DPM8 or APM4
8 digital extension ports
KSU2 408E
KSU1: 101-108
KSU2: 141-148
COM4 Ribbon Connector
408M: CPM Ribbon Cable
408E: CPM Connector Cable
(aprox. 1 meter long to extend out of KSU2
into KSU1)
Power Failure 4 CO line circuits
Transfer Port KSU1: 800-803
KSU1: 800 KSU2: 808-811
KSU2: 808
KSU Components (continued on next page)
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