GAI-Tronics 495-001 Mine Dial / Page Phone Interface Cabinet - Manual (Page 4)

Pub. 42004-198D
Model 495-001 Mine Dial/Page Phone Interface Cabinet Page: 4 of 22
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The Model 495-001 Phone Interface Cabinet contains the following items:
Qty Part No. Description
8 10428-001 PCBA Rack Assembly (each holding ten Telephone Line Interface Assemblies)
1 10432-001 Power Supply/Metering Panel Assembly
1 10431-001 All-Call/Merge Assembly
1 10430-001 DC Power Transfer Assembly
1 10429-001 Housing for All-Call/Merge and DC Transfer Assemblies
Each PCBA Rack assembly occupies the space of a 5.25
× 19-inch rack panel and includes four terminal
blocks on the rear surface. The four terminal blocks include two marked DIAL/PAGE P HONE L INES to
connect ten pairs of wires from ten Mine Dial/Page Phones; and two marked T ELEPHONE L INES to
connect ten pairs of wires to the telephone switchboard. See Figure 3.
Figure 3. Wiring Diagram for 10428-001 Dial/Page Phone Interface Card Rack Assembly
The line number of a DIAL/PAGE P HONE L INE S is coordinated with the T ELEPHONE L INE S number and
the Interface Assembly position. Mine Phone Line 1 and Telephone Line 1 are both wired to the Interface
assembly plugged into slot 1. A fifth terminal block inside the PCBA Rack assembly is used to
interconnect multiple rack assemblies and to connect to the All-Call/Merge assembly.