AT&T 75 Wiring Manual page 514

66-TYPE HARDWARE
9 . Install handset bracket on left or right side of console, as desired.
1 0 .
Insert handset adapter on same side of handset bracket.
Note: The handset adapter is available in two models: 854A-03 (black) or
854A-143 (burgundy).
A bracket is not required for a headset.
Connect handset cord to jack on same side of console as handset bracket.
1 1 .
Administer per AT&T System 75 and System 75 XE Implementation and A T & T
1 2 .
System 75 and System 75 XE Administration.
Figure 4-56. Connections for Attendant Console
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