AT&T 75 Wiring Manual page 78

Z100-TYPE HARDWARE
Control Carrier Outputs (AUXILIARY) Label
The label shown in Figure 2-35 is used for the System 75. For labeling required for the
System 75 XE, refer to the AUXILIARY connector labeling in section 3 (110-type hardware)
of this document. The AUXILIARY connector label is always installed between terminal
rows 1C and 2D on the first (top) CAP. The top half of this label identifies the outputs from
the control carrier AUXILIARY connector on the 1C terminal row. These outputs are
distributed to other points in the CAP and do not pass directly through the CAP. These
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
one executive's voice terminal adjunct (not available 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.
The bottom half of the label is used to identify trunk circuits (1-pair or 3-pair) on the 2D
terminal row that connect through the sneak fuse panel to the network interface.
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