Network System Technical Reference Guide

NT8D14 Universal Trunk Card Page 387 of 544
Option 11C and 11C Mini Technical Reference Guide
Paging operation
In the Paging mode, the Universal Trunk is connected to a customer-provided
paging amplifier system. When the trunk is accessed by dial-up or attendant
key operation, it provides a loop closure across control leads A and B. In a
typical application, this will transfer the input of the paging amplifier system
to the transmission path of the trunk.