AT&T ML17929 User Manual page 51

Appendix
Troubleshooting
• If you subscribe to high-speed Internet service (DSL - digital subscriber
line) through your telephone line(s), you must install a DSL filter between
each telephone line cord and telephone wall jack (see Telephone base
installation on pages 5-6). The filter prevents noise and caller ID problems
caused by DSL interference. Please contact your DSL service provider for
more information about DSL filters.
My caller ID isn't working.
• Caller ID is a subscription service. You must subscribe to this service from your
telephone service provider for this feature to work on your telephone base.
• The caller must be calling from an area that supports caller ID.
• Both your and your caller's telephone service provider must use caller ID
compatible equipment.
• If you subscribe to high-speed Internet service (DSL - digital subscriber
line) through your telephone line(s), you must install a DSL filter between
each telephone line cord and telephone wall jack (see Telephone base
installation on pages 5-6). The filter prevents noise and caller ID problems
resulting from DSL interference. Please contact your DSL service provider
for more information about DSL filters.
System does not receive caller ID when on a call.
• Make sure you subscribe to caller ID with call waiting features from your
telephone service provider. Caller ID feature works only if both you and
the caller are in areas offering caller ID service, and if both telephone
companies use compatible equipment.
Voicemail appears and L1 and/or L2 flashes on the display.
• Your telephone has voicemail indication. If Voicemail appears and L1
and/or L2 flashes on the display, then your telephone has received a
signal from your telephone service provider that you have a voicemail
message on line 1 and/or line 2 waiting for you to retrieve from your
telephone service provider. Contact your telephone service provider for
more information on how to access your voicemail.
My LCD screen isn't functioning normally.
• When the telephone loses power during a call, the screen may temporarily
stop functioning normally and freeze, display text incorrectly or exhibit
other unstable behavior. Try resetting the phone by unplugging the power
adapter and plugging it back in after a few seconds, or after power returns
following a power failure.
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