AT&T System 85 - Manual (Page 107)

CHAPTER 4. OPERATING FEATURES
5. Dial the Trunk Group access code.
Listen for dial tone, and do a or b.
a.
b.
To hang up, turn the turnkey
caller to complete the call.
Associated RLT status light
fully counterclockwise. This action allows the
on SSI goes off. Caller is connected to an
outside line and may proceed to dial the desired number.
Dial the requested number, and then turn the turnkey counterclockwise to
hang up.
The caller hears ringback
now receive another call.
tone. Your backup telephone/voice
System Status Indicators (SSI) at the Branch Locations
At the branch locations, SSI (Figure 4-3) show the busy/idle status of up to 16
terminal can
Release Link
Trunks (RLTs), the mode of operating traffic overload, and alarm conditions (major or minor).
The table in Figure 4-3 shows the light conditions and the system status associated with
each light.
To test SSI lights from any backup telephone/voice terminal (the turnkey should be turned fully
counterclockwise):
1. Lift the handset.
Listen for dial tone.
2 .
Dial Light Test code.
Listen for confirmation
proper operation.
3 .
Hang up.
tone. All RLT status lights on SSI should go on to indicate
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