Installing Control Carrier Outputs Cable - AT&T 75 Wiring Manual

Installing Control Carrier Outputs Cable

The control carrier AUXILIARY connector outputs include the following:
Alarm monitoring for the Applications Processor and the Auxiliary Cabinet
Seven -48 volts dc power sources for emergency transfer units
Three -48 volts dc power sources for remotely powering two attendant consoles and
on executive's voice terminal adjunct (not provided on the System 75 XE)
The Initialization and Administration System (INADS) trunk connection location.
For the System 75 XE, access to a relay contact is available for a customer provided
alarm that can be used to connect a light, bell, or similar type device. The relay can
be administered so that it will make contact when a major, minor or warning alarm
condition exists on the system. The circuitry required for this feature must be
provided by the customer. The device connected to the alarm leads must not exceed a
rating of more than 100 volts at 3/4 amps.
A 25-pair switch cable connects the control carrier AUXILIARY connector (see Figures 4-27
and 4-28) to a 66-type connecting block in the yellow field of the Trunk/Auxiliary Field.
The lead designations for the AUXILIARY connector, shown in Table 4-H, should be written
on the connecting block. To connect the cable, do the following:
1 .
If cable labels are being used, install a YELLOW auxiliary label on both connectors
of a switch cable. The letters "AUX" should be written on each label. If cable
labels are not being used, the letters "AUX" should be written on each cable
connector.
2 .
Run and connect switch cable from AUXILIARY connector on rear of control
carrier through cable slack manager to the 66-type connecting block in the yellow
field of the Trunk/Auxiliary Field.
The output wiring connections for alarm monitoring, emergency power failure, accessory
power, and the INADS trunk interface is contained in this guide under the heading
MISCELLANEOUS WIRING INSTALLATION.
66-TYPE HARDWARE
4-49