AT&T TL87203 - Reasons for Missing Caller ID Information

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