AT&T CL81114 - Reasons for Missing Caller ID Information

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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
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
Your telephone service provider cannot determine
the caller’s name and telephone number.
Calls from other countries may also generate this
message.
Caller ID