Adding A Com4 - Comdial DX-80 Technical Manual

2.9 Adding a COM4

You can add one COM4 to KSU1 and one COM4 to the KSU2. These modules expand the DX-80
system CO line interface capacity to a maximum of eight CO line ports in each KSU (16 total CO 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 1.5 cm brass-color 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.
CO Line Directory Number Matrix Per Installed Location
408M in KSU1
SLOT 1
740,741,742,743
To install the COM4 perform the following steps.
1. Be sure that the entire system is turned off.
2. Remove the KSU cover (four screws at each corner).
3. Connect a static discharge wrist strap to a suitable earth ground. Be sure that the strap is touch-
ing bare skin.
October, '03
COM4 in KSU1 408E in KSU2
SLOT 5 SLOT 1
744,745,746,747
Comdial
DX-80 Installation & Maintenance
COM4 in KSU2
SLOT 5
748,749,750,751 752,753,754,755
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