The number used to identify the calling terminal within the context of the emergency service call. [T1.414-1998]

A radio frequency that a station uses to call another station.

At a minimum, the calling line identification includes a single calling party number; it may also include a second calling party number, a calling party subaddress, and redirecting number information. Calling line identification may not include any calling party number due to interworking, or because of an interaction with the CLIR supplementary service. [T1.625-1993]

Synonym call originator.

A set of digits and related indicators (type of number, numbering, plan identification, screening indicator, presentation indicator) that provide numbering information related to the calling party. [T1.625-1993]

The number of telephone calls originated during a specified time interval such as one hour.

A sequence of instructions together with any associated data necessary to perform a call.

A call control signal transmitted over a circuit to indicate that a connection is desired.

A network-provided service feature in which the network notifies a called terminal of the address from which the call has originated.

A sequence of characters transmitted to the called terminal to permit identification of the calling line.