Cortelco C ALLER ID T YPE II - Manual (Page 21)

UNKNOWN CALLS
•
When the telephone company is unable to provide information of the caller s
telephone number, [UNKNOWN NUMBER] and his name will alternately display on
the screen when this information is received.
•
When the telephone company is unable to provide information of the caller s name,
[UNKNOWN NAME] and his telephone number will be displayed on the screen.
•
When the telephone company is unable to provide information of the caller s name
and number, [UNKNOWN CALLER] will be displayed on the screen.
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