GAI-Tronics 495-001 Mine Dial / Page Phone Interface Cabinet - Manual (Page 9)

Pub. 42004-198D
Model 495-001 Mine Dial/Page Phone Interface Cabinet Page: 9 of 22
f:\standard ioms - current release\42004 instr. manuals\42004-198d.doc
10/11
Wiring Telephone Interface Cabinet to the Telephone System
The Mine Dial/Page Phone Interface Card Rack assembly is connected to telephone line drops from a
customer-provided PABX, or directly to leased telephone company lines. The Mine Dial/Page Phone
system is designed to operate with any loop-start two-wire telephone line with bridged ringing.
Refer to Figure 3 for wiring details. Screw terminal barrier blocks are provided for telephone line
connection.
N
OTE : Telephone line connections are not polarity sensitive. In addition to a line (a pair of wires) for
each station from the PABX to the interface cabinet, three additional lines (pairs of wires) are required for
these system functions. See Figure 7 for wiring details.
Figure 7. MDPP1 Wiring Information