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Problem
Possible Cause
Do This
If...
Then...
16. Other
Problems
with Phones
The other phone
works,
17. Other
Problems
with the
System
1. Possible faulty
telephone.
Unplug the cord from
the base of the prob-
lem phone and plug it
into a phone of the
same type that works.
2. Defective telephone Unplug the cord from
cord.
the base of the phone
and the wall jack.
Replace it with a cord
that works.
1. System needs a
hardware reset.
Use System Reset
(#728) to reset the
system (see page
5-10). NOTE: This
procedure disconnects
all calls in progress.
2. Filters on
expansion cable
need to be
repositioned.
Place the filters just
below the base of the
backplanes (see page
2-9).
The other phone
does not work,
If the phone works,
If the phone does not
work and is part of a
combination
extension,
If the phone does not
work and is not part
of a combination
extension,
The problem is not
solved,
The problem is not
solved,
Old phone was faulty.
Call the AT&T Helpline*
for a replacement.
Go to Possible Cause 2.
Cord is faulty. Call the
AT&T Helpline* for a
replacement.
See Problem 13,
Possible Cause 3 on
page C-7.
Call the AT&T Helpline*.
Go to Possible Cause 2.
Call the AT&T Helpline*.
*
In the U.S., help is available 24 hours a day at 1 800 628-2888. In Canada, call your local AT&T authorized dealer.
C-8
Maintenance and Customer Support