AT&T System 85 - Manual (Page 100)

CHAPTER 4. OPERATING FEATURES
HANDSET
/ TURNKEY
Figure 4-2. Backup Telephone/Voice Terminal With Handset/Headset
Modes of Operation
There are three modes of operation to answer calls at branch locations:
1. CAS mode (normal mode)
2 . Call Answer From Any Voice Terminal (CAAVT) mode
3.
Backup mode.
You can change the mode of operation from the backup
the required code.
To change mode of operation:
1. Turn the turnkey fully counterclockwise.
telephone/voice terminal by dialing
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