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

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.

 

 

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AT&T CL4940 user manual Reasons for missing caller ID information, On-screen message Reason