switch The device that makes connections for all voice and data calls for a network, and also contains software for features. Also known as a system, switching system, or PBX (private branch exchange). Your switch is an AT&T DEFINITY® Communications System Generic 2 or an AT&T System 85.
System 85 The AT&T switch to which you maybe connected. It transmits and receives voice and data signals for all communications equipment in your network. (See also DEFINITY® Communications System Generic 2.)
system list One of the 3 types of Abbreviated Dialing lists; programmable only by the System Manager. Contains telephone numbers helpful to all system users.
System Manager The person responsible for specifying and managing the operation of features for all the voice and data equipment in your network.
trunk A telecommunications channel between your switch and the local or long- distance calling network or to another switch. Trunks of the same kind connecting to the same endpoints are assigned to the same trunk group.
trunk code A dial code of up to 4 digits in that you dial to access a trunk group to place an outside call.
voice terminal A telephone equipped with an array of specially designed features (for example, administrable buttons) and functional capabilities that distinguish it from a conventional telephone.
