A facility provided by a switched network which can notify a called terminal of the telephone number of the line from which a call originated.
The telephone number of the calling party.
The name used by exchanges outside of the U.S. for the system that identifies the calling number. (See Automatic Number Identification).
(or CLI) Shows the number of the person calling you in your mobile phone's display. You can then make an informed choice as to whether or not to take the call. Bear in mind that not all numbers can be displayed.