Toshiba CTX28 Install the GCDU1A DKT and Loop Start Interface, To install the GCDU1A, GCDU1A PCB

CTX28 Installation

Installing the CTX28 Cabinet

Step 4: Install the GCDU1A (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.

To install the GCDU1A

Carefully place the GCDU1A pins over the GMAU connectors (see Figure 1-6and Figure 1-11). Press down on the PCB to secure the pins to the connectors (see Table 1-9).

SW600

SW500

SW400

CO4

CO5

CO6

7260

Figure 1-11	GCDU1A PCB
Table 1-9 GCDU1A Controls, Indicators and Connectors
Control/Indicator/		Type of Component	Description
Connector
SW400
SW500		2-position slide switch	3dB Pad switch
SW600
P4		16-pin male connector
P5		12-pin male connector	GMAU interface
P6		9-pin male connector
P9		6-pin male connector
P400			Interface for CO Line circuit (CO4)
P500		Modular connector	Interface for CO Line circuit (CO5)
P600			Interface for CO Line circuit (CO6)

1-16 Strata CTX I&M 06/04