CLID, synonomous with ANI, is a service available on digital phone networks informing the party being called which number is calling them.

See CLID.

A generic term for switch features that identify the calling line. An example is Automatic Number Identification (ANI), which provides the billed directory number, which may or may not be the same as the calling line.

A facility that enables identification of the number from which a call is being made.

a service that provides the network number from where a call is being made.

See ANI.