Nortel Modular Ics 6.1 Installer Guide

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P0603534  02Modular ICS 6.1 Installer Guide
The DISA DN and the Auto DN allow auto-answer private 
network and DID calls, in the same way that calls on 
auto-answer loop start and auto-answer E&M trunks can be 
answered, with or without DISA. These DNs are described in 
System prgming under Access codes.
Remote access on Direct Inward Dial (DID) trunks
Remote system access on DID trunks is similar to that of E&M 
trunks connected to a private network.
The main differences are:
•...

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P0603534  02Modular ICS 6.1 Installer Guide
Controlling system access
Modular ICS programming provides several ways of 
protecting your Norstar system from unauthorized access or 
use. These features are used in combination to provide control 
both to users and to lines.
Class of Service
Class of Service (COS) refers to the capabilities that Norstar 
provides to users who access the system from the public or 
private network. A password defines which set of capabilities 
the user has access to.
The COS...

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Restriction filters
Restriction filters can be used to restrict the numbers that may 
be dialed on any external line within your Norstar system. Up 
to 100 restriction filters can be created for the system.
A restriction filter consists of up to 48 restrictions with 
associated overrides.
To restrict dialing within the system, you can apply filters to:
• outgoing external lines (as line restrictions)
• telephones (as set...

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Line restrictions
In the previous diagram, a caller using line 1 could only dial 
long-distance numbers to area codes 212 and 718. A caller 
using line 3 could not dial any long-distance numbers. A caller 
using line 5 could dial long-distance numbers to area codes 
212, 718, and 415.
Tips - Set restrictions have no effect on numbers dialed on 
an E&M trunk.
To restrict dialing outside the system, once a caller gains 
remote...

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Remote caller restrictions
In this case, dialed digits must pass both the remote restriction 
and the line restriction. A remote caller can override these 
filters by dialing the DISA DN and entering a COS password. 
For restriction filter programming instructions, see 
Restrictions on page 339 and the Modular ICS 6.1 System 
Coordinator Guide.
Direct inward system access (DISA)
To control access from the public or private...

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In addition to public network connections, Norstar Modular 
ICS can be integrated into an existing private network, or to 
other Norstar or Meridian 1 systems to form a corporate 
telecommunications network.
Tips - You must have one E&M/DISA Trunk Cartridge to 
provide DTMF receivers for every two auto-answer loop start 
trunks on Loop Start or CI Trunk Cartridges.
DID and PRI trunks cannot be configured to answer with 
DISA. If...

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P0603534  02Modular ICS 6.1 Installer Guide
Networking with Norstar
There are a number of ways you can network Norstar systems 
together, or network Norstar systems with other Nortel 
systems into private networks. What types of lines you use to 
perform the networking will determine the type of services 
that can be shared between systems. 
Keep in mind that each node (Norstar system) is considered an 
external system by every other node within the network, even 
though, to the users, it appears to be...

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Tie-line networking
Norstar uses enhanced trunking to join other Norstar or 
customer equipment in a private network. This allows 
authorized users access to tie lines, central office lines, and 
Norstar features from outside the Norstar system.
Callers using the Norstar Modular ICS system can:
• call directly to a specific Norstar telephone
• select an outgoing tie line to access a private network
• select an outgoing tie line to...