AT&T CL82107 User Manual page 148

Appendix
Troubleshooting
My caller ID isn't working.
Caller ID is a subscription service. You must subscribe to this
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service from your telephone service provider for this feature to
work on your phone.
The caller may be calling from an area that supports caller ID.
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Both your and your caller's telephone service providers must use
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caller ID compatible equipment.
If you subscribe to high-speed Internet service (DSL - digital
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subscriber line) through your telephone line, you must install a
DSL filter between the telephone line cord and the telephone
wall jack (page 7). 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
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from your telephone service provider. Caller ID features works
only if both you and the caller are in areas offering caller ID
service, and if both telephone service providers use compatible
equipment.
System screens all my incoming calls.
Smart call blocker is set to on by default. If your directory,
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allow list, block list, and star name list are empty, all calls will
be classified as unknown calls. The telephone will screen all
incoming calls and asks callers to announce their names or
press the pound key (#). We recommend that you set up your
directory, allow list, block list, and star name list before using
your telephone with the Smart call blocker feature. See Block
list on page 75, Allow list on page 80, and Star name list
on page 85.
To turn Smart call blocker off, see Set Smart call blocker on/off
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on page 72.
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