AT&T CL81209, CL81219 Reasons for missing caller ID information, On-screen message Reason

Caller ID

Reasons for missing caller ID information

There are also 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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