Vertical comdial DX-120, Installation And Maintenance Manual

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DX-120 Installation and Maintenance Manual
I
NSTALLING THE
DX-120
Installing the DPM8 (continued)
7) Position the DPM8 over the left-hand side of the 408M/E and any other extension modules already
installed.
NOTE
When installing DPM8 modules, Vertical recommends that you install them
closest to the 408M/E. That is, if an APM4 module is installed move it outward
(toward cabinet cover) and install the add-on DPM8 first, then re-install the APM4.
In the KSU extension modules are always installed on the left-hand side.
8) Use the four brass-color standoffs supplied with the DPM8 to secure the DPM8 in position.
9) Connect the DPM8 ribbon cable to the 408M Extension Expansion Module Connector closest to the
DPM8.
HINT
Press firmly (but not forcefully) on the connector to secure a good connection.
10)Make connections to the eight (8) digital 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.