Reasons For Missing Caller Id Information - AT&T ML17939 User Manual

Caller ID

Reasons for missing caller ID information

Screen message
Private name
Private number
Private caller
Unknown name
Unknown number
Unknown caller
The caller prefers not to show the name.
The caller prefers not to show the telephone
number.
The caller prefers not to show the name and
telephone number.
The telephone service provider cannot determine
the caller's name.
The telephone service provider cannot determine
the caller's telephone number.
The telephone service provider cannot determine
the caller's name and number.
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Reason