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P0881591 Issue 01
Modular ICS 4.0 System Coordinator Guide
Using System features
Using alternate or scheduled services
There are three types of Services to make your Norstar system 
handle calls differently on different days and at different times 
of the day: Ringing service, Restriction service and Routing 
service.
Each of the three services, and the six schedules available to 
each service, are customized for you by your installer or 
customer service representative. They program which 
telephone is used to turn Services on and off, and display what 
Services are in use. This is called the control telephone.
Preventing certain calls from being made
Restriction service prevents a user from making certain kinds 
of calls from a telephone or from lines that are available at the 
telephone. The restrictions are programmed by your installer 
or customer service representative.
Making additional telephones ring
Ringing service makes additional telephones ring for 
incoming calls on external lines. For instance, all incoming 
external calls can ring at a security guard’s telephone during 
the night, or calls to one attendant can ring at another 
attendant’s telephone during lunch. It does not suppress your 
normal ringing assignment.
Changing the lines used by outgoing calls
Routing service allows you to assign alternate routes to calls. 
In this way you can take advantage of lower costs available on 
particular routes on certain days and at certain times. Both the 
regular and alternate routes are programmed by your installer 
or customer service representative.
p0881591.book  Page 165  Wednesday, August 19, 1998  6:43 PM