AT&T CL83519 User Manual page 106

Appendix
Troubleshooting
I experience poor sound quality when using the handset speakerphone.
For increased sound quality while using the handset speakerphone, place the
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 phone.
The caller may not be calling from an area that supports caller ID.
Both your and the caller's telephone service providers must use caller ID
compatible equipment.
If you subscribe to high-speed Internet service (DSL - digital subscriber
the telephone line cord and the telephone wall jack (page 7
prevents noise and caller ID problems resulting from DSL interference. Please
contact your DSL service provider for more information about
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 features works only if both you and the
providers use compatible equipment.
System screens all my incoming calls.
You may have set Smart call blocker to screen calls without numbers and
uncategorized calls. The telephone asks callers to announce their names or
press the pound key (#). We recommend that you add the phone numbers of
your family members and friends, and desired businesses to your Directory
(see page 39) or Allow list (see page 58), or add their names to the Star
name list (see page 63). This will avoid Smart call blocker to screen their
calls.
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