AT&T EL52219 - Answering System Configuration; Answering System Settings

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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:
Screen message Reason
PRIVATE NAME The caller prefers not to show the name.
PRIVATE NUMBER The caller prefers not to show the telephone number.
PRIVATE CALLER The caller prefers not to show the name and telephone
number.
UNKNOWN NAME Your telephone service provider cannot determine the
caller’s name.
UNKNOWN NUMBER Your telephone service provider cannot determine the
caller’s telephone number.
UNKNOWN CALLER Your telephone service provider cannot determine the
caller’s name and telephone number. Calls from other
countries may also generate this message.