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192 / General System features

Modular ICS 4.0 System Coordinator Guide

P0881591 Issue 01

When Disconnect Supervision is assigned to a line, the Norstar 
system monitors it to detect if an external caller hangs up. This 
allows the system to release the line for other uses. Your 
installer or customer service representative assigns disconnect 
supervision. 

Your Norstar system now allows you to establish Hunt Groups 
in your system. Hunt Groups are a group of Norstar sets that 
can be called by a single directory number. The Hunt Groups 
feature ensures calls are easily routed to the appropriate 
people. For more information on Hunt Groups see 
“Programming Hunt Groups”  on page 135.

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 (

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. 

p0881591.book  Page 192  Wednesday, August 19, 1998  6:43 PM