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

A service feature that enables the system to complete an access attempt in spite of temporary unavailability of system transmission or switching facilities required to establish the requested access.
Note: Systems that provide calling party camp-on monitor the system facilities until the necessary facilities become available, and then proceed to complete the requested access. Such systems may or may not… (Read More →)

A service feature that permits a terminal either to make outgoing calls or to receive incoming calls, but not both.

Acronym for centralized automatic message accounting.

A combination of camera and video tape recorder in one device.
Note: Camcorders permit easy and rapid photography and recording simultaneously. Camcorders are available in most home video formats: 8mm, Hi-8, VHS, VHS-C, S-VHS, etc. [After Silicon]

See automatic callback, called-party camp-on, queue traffic.

1. A signal that informs a busy telephone user that another call originator is waiting for a connection.
2. A teleprinter exchange facility signal that automatically causes a calling station to retry the call-receiver number after a given interval when the call-receiver teleprinter is occupied or the circuits are busy. Synonym speed-up tone.

A camp-on with the release of the call-originator terminal until the called-receiver terminal becomes free.
Note: The call originator can thus establish other calls until the recall signal is obtained, rather than simply wait until the call-receiver line is available.

Abbreviation for cancel character.

An independent, nongovernment, not-for-profit association for the development, by consensus, of Canadian standards and product certification.