AT&T 1040 - Manual (Page 70)

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Appendix J
In case of difficulty
I hear other calls when
using the telephone. • Disconnect the telephone base from the telephone
jack. Plug in a different telephone. If you still hear
other calls, the problem is probably in the wiring
or local service. Call your local telephone company.
• Make sure you are using the round black cords
that came with the phone. These cords help
prevent crosstalk (hearing other calls.)
My calls fade out or cut in
and out when I am using
the telephone.
• If you have a headset plugged into the telephone,
try unplugging it and firmly plugging it in again.
• Disconnect the telephone base from the
modular jack and plug in another corded
telephone. If calls are still not clear, the problem
is probably in the wiring or local service. Contact
your local service company (charges may apply).
• If you are using the speakerphone when this
problem occurs, eliminate any background noise.
Noise from the television, radio, or other appliances
may cause the speakerphone to cut in and out.
Try engaging the
[MUTE] button when you are not
speaking or eliminating the background noise.
• If you have Digital Subscriber Line, (DSL,) service,
and you have more than three telephone sets,
and you have installed microfilters, you may
need to have a DSL splitter installed by your DSL
service provider.
The screen displays AC
FAIL.
• The phone has been disconnected from AC
power. When AC power is restored, the screen
will return to the usual display. One-touch and
redial numbers are retained until power is
restored.
The sound quality of the
headset is poor. • Unplug it and and firmly plug it in again.