Line Assignment; Target Line - Northern Telecom Compact ICS 4.0 Manual

206 / General System features

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 that person's 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
telephone has no line buttons for its lines.
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.
A telephone may have buttons assigned for lines 001 to 003,
but have only lines 001 and 002 programmed to ring as well.
An incoming call on any of the three lines causes a line button
indicator to flash, and the telephone can be used to answer the
call. This is especially useful for people who monitor other
telephone lines, but want only their own lines to ring.

Target line

A target line is used to route a call directly to a particular
telephone or group of telephones. Target lines are used only
for incoming calls. A single incoming line may provide
connections to several different target lines. This allows each
person or department in the office to have their own number
without having a separate external line for each number.
Compact ICS 4.0 System Coordinator Guide P0881596 Issue 02