Nortel Networks P0857846 User Manual

140 / General System features

Norstar-PLUS Modular ICS 2.0 System Coordinator Guide

P0857846 Issue 02

allows the system to release the line for other uses. Your installer or 
customer service representative assigns disconnect supervision. 

Lines can be assigned to an incoming line group to provide line 
concentration for incoming calls. You can then assign the incoming 
line group to appear at a telephone rather than each individual line. 
This frees up memory buttons for programming features or autodial 
numbers.

You can assign the same incoming line group to several telephones.

You answer calls on an incoming line group in the same way as you 
answer calls on a line. 

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 (also called the DN length). The default 
DN length is three.

To find out your internal number, use the Button Inquiry feature 
(

ƒ•‚

) on an intercom button. On the M7100 telephone, 

Button Inquiry shows your internal number followed by the function 
assigned to your single-memory button.

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.