AT&T System 75 Wiring Diagram page 302

CHAPTER 5. AUXILIARY EQUIPMENT INSTALLATION
Access to the TN742 or TN769 analog line circuit pack is provided by an
information outlet. The TN742 and TN769 circuit packs contain eight
ports. Access to the TN763B auxiliary trunk circuit pack is by the T and
R leads through the cross-connect field. All four ports of the circuit pack
are connected to the announcement unit.
Figures 5-16 and 5-17 show the connections for the Audichron wake-up
announcement system. Figure 5-18 shows the power and ground
connections. One analog line port and an auxiliary trunk circuit pack are
required to connect the wake-up announcement unit.
Installation
Install wakeup announcement system as follows:
1. Determine feature port assignment from Hospitality-Related System
Parameters Form:
EXAMPLE:
2. Connect a 2-pair line cord (modular plug on one end) from the
information outlet (Figure 5-16) to the announcement unit.
Install patch cord at cross-connect field (Figure 5-16).
3.
4. Identify the carrier slot for the auxiliary trunk circuit pack and place
a label on both ends of a connector cable.
5. Connect the cable to the appropriate port carrier slot and dress it
down the sides of the cabinet.
6. Connect the cable from the bottom of the switch cabinet through
the cable slack manager, if provided, to the connector associated
with the 110-type terminal block/66-type connecting block row in
the purple cross-connect field.
7. Connect an A25D (for 110-type hardware) or B25A for 66-type
hardware) cable from the 25-pair connector associated with the
second 110-type terminal block row/66-type connecting block in
the yellow cross-connect field to connector J1 on the announcement
unit (Figure 5-17).
B
Port Number
Carrier
0 2 01
Slot Circuit
5-29