Avaya 9650 End User Manual page 20

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. 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 that you dial to access a trunk group to place an outside call
9650 IP Telephone End User Guide | 20 | P a g e