Nortel Modular ICS 6.0, Manual

Page: 237 / 294

General System features / 237
P0992640 03 Modular ICS 6.0 System Coordinator Guide
Internal numbers
Each telephone in the Norstar system has its own internal
number. The length of internal numbers in your system can be
from two to seven digits on a non-expanded system, and three
to seven digits on an expanded system. All numbers in your
system are the same length. Your installer or customer service
representative sets the length of internal numbers, called the
DN length. The default DN length is three.
To find out your internal number, use the Button Inquiry
feature (
²¥â) on an intercom button. On the M7100 or
the T7100 sets, Button Inquiry shows your internal number,
followed by the function assigned to your single-memory
button.
Line assignment
Any of the lines in your system can be assigned to any of your
telephones. Your installer or customer service representative
assigns lines to telephones in Configuration programming.
Lines can be assigned to appear only, appear and ring, or to
ring only.
Usually, only the lines that are appropriate for a particular
person appear at their telephone. When a line is assigned to a
telephone, it is automatically given a line button on that
telephone, if a button is available. The M7100 and the T7100
sets do not have line buttons.
Calls on lines that ring but do not appear at a telephone are
presented at an intercom button.
You may be able to answer a call on a line that does not appear
or ring at your telephone. To pick up such a call, use Call
Pickup, Call Park, or Trunk Answer.