Testing Your Voice Terminal - AT&T SYSTEM 25 User Manual

Testing Your Voice Terminal

You can test the lights and ringer on your voice terminal if you
have a Test/Program Switch. On some voice terminals, the
Test/Program switch has a spring. If so, the switch must be held
in the T position to test the lights and ringer; the switch will
automatically return to the midpoint when released.
Follow these steps to test your terminal.
1
2
Slide the switch on the left side of the voice
terminal to T. If your switch has a spring,
hold the switch in the T position.
The red and green lights alternately light
—
and the ringer sounds.
If your switch has a spring, release the
switch. If there is no spring, slide the switch
back to the midpoint between P and T.
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