Reasons For Missing Caller Id Information - AT&T CL81109 User Manual

Caller ID

Reasons for missing caller ID information

There are also occasions when other information or no information shows for
various reasons:
On-screen message
PRIVATE NUMBER
PRIVATE NAME
PRIVATE CALLER
UNKNOWN NUMBER
UNKNOWN NAME
UNKNOWN CALLER
The caller prefers not to show the phone number.
The caller prefers not to show the name.
The caller prefers not to show the phone number
and name.
Your telephone service provider cannot determine
the caller's number.
Your telephone service provider cannot determine
the caller's name.
Your telephone service provider cannot determine
the caller's name and telephone number. Calls from
other countries may also generate this message.
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Reason