Nortel Networks Modular ICS 4.0 - Manual (Page 214)

202 / Troubleshooting
Modular ICS 4.0 System Coordinator Guide P0881591 Issue 01
You should hear page tone through the telephone speaker at
the maximum volume. The volume returns to its previous
setting when you end the test.
Pressing any button ends the test.
Testing the power supply to a telephone
1. Press
ƒ°‚fi, then £ or NEXT until the
display reads Power test.
2. Press TEST or ˙ to go ahead with a power supply
test.
You should see all the indicators on the telephone go on and
hear ringing at maximum volume. When the test has ended, the
display should briefly show Power OK.
The test lasts for five seconds or until you press a button.
p0881591.book Page 202 Wednesday, August 19, 1998 6:43 PM