AT&T MERLIN 820 Installation Manual page 35

TROUBLESHOOTING TABLE (CONTINUED)
Possible Cause
Trouble
Faulty network inter-
You have difficulty
face line adapter
placing outside calls
from more than one
voice terminal.
(continued)
Volume control
A voice terminal
switch
doesn't ring.
Voice terminal is
programmed not to
ring
Do Not Disturb
feature is activated
(applies only if you
have a Feature
Package)
Control unit
There is trouble with
voice terminal lights,
speaker, or ringing.
34
Do this
5. Replace the network inter-
face's line adapter with
another one. Plug the basic
telephone into each of the
jacks, and try to place an out-
side call.
1.
Check the volume control
setting on the voice terminal.
Slide the switch to a high
setting.
2. Refer to the user's guide to
learn how to program ringing
options.
Refer to the user's guide that
3.
came with the Feature
Package to see if the feature
is activated.
1. Slide the T/P switch on the
side of the voice terminal to
the T position and hold it
there.
If
the trouble still appears on the
basic telephone
the trouble does not appear on
the basic telephone
the trouble persists
voice terminal is programmed
not to ring
the voice terminal is pro-
grammed to ring
the feature is activated
the feature is not activated
all the red and green lights flash
alternately and a tone sounds
continually
some (but not all) of the lights
flash continually and/or a tone
sounds at irregular intervals
all lights are off and a tone
sounds continually or irregularly
the lights are dim
Then
your outside lines are faulty. Report
the trouble to your local telephone
company representative.
the old line adapter is faulty.
Replace it with a new line adapter.
go to step 2.
change the ringing option following
the instructions in the user's guide.
go to step 3.
deactivate the feature following the
instructions in the user's guide.
refer to the test for "Trouble with
lights, speakers, and ringing,"
below.
the voice terminal is working prop-
erly. Go to step 3.
the trouble is caused by either the
voice terminal or the cable connec-
tion. Go to step 2.
the trouble is either the control unit,
the voice terminal, or the cable
connection. Go to step 2.
you may need an Auxiliary Power
Unit or a Voice Terminal Power
Supply. Refer to "Power Ac-
cessories," page 26.