Lesson 1/Learning Event 5
in the DC primary patch bay. It has the optional EQ MON jack row. Figure
1-18 shows the jack circuit wiring for the send module and Figure 1-19 for
the receive module. Each module can accommodate 24 half-duplex, or 12 full
duplex circuits. A bay normally contains a maximum of six modules.
(3) Interbay Trunk Modules.
Jacks in the interbay trunk modules are
used to connect circuits within a TCF that are some distance apart and to
provide access to the DC circuit patch bays. Lamps are generally associated
with the jacks on the front panels of the modules to indicate when a jack
circuit is in use. Figure 1-20 shows a typical interbay trunk module front
panel and figure 1-21 shows the associated jack wiring diagram.
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