Step 5: Install The Gcdu (Dkt And Loop Start Interface) - Toshiba Strata CTX Series Installation And Maintenance Manual

Step 5: Install the GCDU (DKT and Loop Start Interface)

The GCDU1A PCB adds an additional 3 CO lines, 3 Caller ID units, and 8 digital telephone
circuits with a single PCB. It attaches to the GMAU1A motherboard. With the GCDU1A installed,
the CTX28 supports up to 16 digital telephones (DKTs), 6 CO lines and 6 Caller ID circuits.
³
To install the GCDU1A
³
Carefully place the GCDU1A pins over the GMAU connectors (see
1-11). Press down on the PCB to secure the pins to the connectors (see
Figure 1-11 GCDU1A PCB
Table 1-10 GCDU1A Controls, Indicators and Connectors
Control/Indicator/
Connector
SW400
SW500
SW600
P4
P5
P6
P9
P400
P500
P600
Strata CTX28 I&M 3/05
Type of Component
2-position slide switch 3dB Pad switch
16-pin male connector
12-pin male connector
GMAU interface
9-pin male connector
6-pin male connector
Interface for CO Line circuit (CO4)
Modular connector Interface for CO Line circuit (CO5)
Interface for CO Line circuit (CO6)
CTX28 Installation
Installing the CTX28 Cabinet
Figure 1-6 and
Table 1-10).
CO4
CO5
CO6
7260
Description
Figure
1-19