AT&T CL2939 User Manual page 47

Appendix
Troubleshooting
My calls fade out or cut in
and out when I am using
the telephone.
I hear other calls when
using the telephone.
appears on the screen.
Display screen is blank.
• If you are using the handset when this problem
occurs, try unplugging the coiled handset
cord and firmly plugging it in the handset and
telephone base again.
• If you are using the speakerphone when this
problem occurs, eliminate any background
noise. Noise from the television, radio, or other
appliances might cause the speakerphone to
cut in and out. Try pressing MUTE when you
are not speaking to eliminate the background
noise.
• Disconnect the telephone base from the
telephone wall jack and plug in another
corded telephone. If calls are still not clear, the
problem is probably in the wiring or telephone
service. Contact your telephone service
provider (charges may apply).
• If you subscribe to high-speed Internet
service (digital subscriber line - DSL) through
your telephone line, you must install a DSL
filter between the telephone line cord and
the telephone wall jack (see Telephone
installation on page 8). The filter prevents
noise and caller ID problems caused by DSL
interference. Please contact your DSL service
provider for more information about DSL filters.
• Disconnect the telephone base from the
telephone wall jack. Plug in a different
telephone. If you still hear other calls, the
problem is probably in the wiring or telephone
service. Contact your telephone service
provider (charges may apply).
• The batteries need to be replaced. Remove and
re-install new alkaline AA batteries (purchased
separately).
• Make sure alkaline batteries with enough
charge are installed.
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