AT&T TL90077 User Manual page 22

Appendix
Troubleshooting
If the battery is depleted, it might take approximately 30 minutes to
f
charge the handset before it shows Low battery. Refer to the table
on page 7 for details.
You might need to purchase a new battery. Refer to Battery
f
installation and charging in this user's manual on pages
7-9.
I hear other calls while using my phone.
Disconnect the telephone base from the telephone jack, and
f
plug in a different telephone. If you still hear other calls, call
your telephone service provider.
I get noise, static, or weak signals even when I'm near the
telephone base.
If you subscribe to high-speed Internet service (DSL - digital
f
subscriber line) through your telephone line, you must install a
DSL filter between the telephone line cord and the telephone
wall jack. The filter prevents noise and caller ID problems as
a result of DSL interference. Please contact your DSL service
provider for more information about DSL filters.
You may be able to improve the performance of your cordless
f
phone by installing your new telephone base as far as possible
from any other existing cordless telephone system that may
already be installed.
Other electronic products such as HAM radios and other DECT
f
phones, can cause interference with your cordless phone. Try
installing your phone as far away as possible from these types of
electronic devices.
Do not install this phone near a microwave oven or on the same
f
electrical outlet. You might experience decreased performance
while the microwave oven is operating.
18