Vertical comdial DX-120, Installation And Maintenance Manual

Page: 62 / 146

I
NSTALLING THE
DX-120
DX-120 Installation and Maintenance Manual
- 56 -
Installing the APM4 (continued)
9) Connect the APM4 ribbon cable to the 408M/E Extension Expansion Module Connector closest to the
APM4.
OR - FOR KSU2
In KSU2, connect the dedicated APM4 ribbon cable from the 408E to the APM4 module (and discard
the packaged ribbon cable).
HINT
Press firmly (but not forcefully) on the connector to secure a good connection.
10)Make cable/wiring connections to the 4 analog ports as required.
CAUTION
The FCC requires that wiring of CO lines into a KSU be separated from
wiring of station apparatus into a KSU. Therefore you must use separate
cables for wiring stations and CO lines.
11) Replace the KSU cover and secure with cover screws.
12) Restore KSU power.
Adding a COM4
You can add one COM4 to KSU1 and one COM4 to the KSU2. These modules expand the DX-120 system loop
start CO line interface capacity to a maximum of eight loop start CO line ports in each KSU (16 total loop startCO
line ports when used in KSU 1 & 2).
•
When adding a COM4 to either KSU, connect to the 408M/E via the COM4 module ribbon cable.
-
This ribbon cable has the logical system address of SLOT 5 in both cabinet 1 (KSU1-408M) and cabinet
2 (KSU2-408E).
•
COM4 modules are installed using four 2.0 cm (brass) standoffs.
•
Always install the COM4 module beneath the CPM module (in KSU1) by first removing the CPM, installing the
COM4, and then re-installing the CPM. This is required whenever you install the In-Skin Voice Processor.
Adding a COM4 (continued on next page)