AT&T 8520T - Manual (Page 25)

system list One of the four types of Abbreviated Dialing lists; programmable only
by the system manager. Contains telephone numbers helpful to all system users,
and stores each of those numbers as a 2-digit list item.
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 DEFINITY Generic 1 or
Generic 3 and the local or long distance calling network. Trunks of the same kind
connecting to the same end points are assigned to the same trunk group.
trunk code A dial code of 1, 2, or 3 digits you dial to access a trunk group to place
an outside call.
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