Adding A Com4 (Co Line Module - 4 Port) - Comdial DX-80 Installation And Maintenance Manual

KSU Connector
used
APM4 Connector
(SLOT 4)
J2 Extension
Expansion
(SLOT 2)
J3 Extension
Expansion
(SLOT 3)
APM4 Installation Procedure
1. Be sure that the entire system is turned off.
2. Remove the KSU cover (four screws at each corner).
3. Connect grounded wrist strap to a suitable earth ground. (If a grounded wrist strap is not available, bleed
any static charge from your body before touching circuit modules by touching the gold-painted surface of the
inside of the KSU cabinet. If the KSU is properly grounded this will momentarily discharge static electricity
from your body. NOTE: A GROUNDED WRIST STRAP IS THE ONLY METHOD OF ASSURING THAT
STATIC ELECTRICITY DOES NOT DAMAGE CIRCUIT MODULES.)
4. Remove the APM4 module from the packaging and locate the four nickel-color standoffs packaged with the
module.
5. Position the APM4 over the left-hand side of the 408M/E and any other extension modules already installed.
(Extension modules are always installed on the left-hand side, in the KSU.)
6. Use the four nickel-color standoffs supplied with the APM4 to secure the APM4 in position.
7. Connect the APM4 ribbon cable to the 408M/E Extension Expansion Module Connector closest to the
APM4. Or in KSU2, connect the dedicated APM4 ribbon cable from the 408E to the APM4 module (and
discard the packaged ribbon cable). Press firmly (but not forcefully) on the connector to secure a good
connection.
8. Make cable/wiring connections to the 4 analog ports as required.
NOTE:
9. Replace the KSU cover and secure with cover screws.
10. Restore KSU power.
Adding a COM4 (CO Line Module – 4 port)
One COM4 (CO Line Module, 4-port) can be added to KSU1 and one COM4 can be added to KSU2. These modules
expand the DX-80 system CO Line interface capacity to a maximum of 8 CO Line ports in each KSU (16 total CO
Line ports when used in KSU 1 & 2).
When adding a COM4 to either KSU, it is installed by connection 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 (4), 2.0 cm brass-color standoffs. The COM4 module should always
be installed beneath the CPM module (in KSU1) by first removing that module, installing the COM4 then reinstalling
the CPM. (This is required whenever the PC-8 Voice Processor is installed.)
P7290 IMM
DX-80 I
NSTALLATION AND
Extension Number Matrix Per Installed Location
Extension numbers Extension Numbers
in KSU1
149,150,151,152
109,110,111,112
117,118,119,120
The FCC requires that wiring of CO Lines into a Key Service Unit be separated from
wiring of station apparatus into a Key Service Unit. Therefore the installer must use a
separate cable for wiring of stations and CO Lines.
M M
AINTENANCE ANUAL
in KSU2
153,154,155,156 KSU1 analog ports are standard
133,134,135,136
Since the profile of the APM4
module is higher than the other
modules, only one Extension
Expansion connector can be
141,142,143,144
used for APM4 modules.
2-11
Notes