Nortel Modular Ics 6.0 Installer Guide

P0992638 03Modular ICS 6. 0 Installer Guide
Trunks and target lines
Trunks are external lines that provide the physical connection 
between a Norstar system and other systems in a private or 
public network. Trunks are numbered 001 to 156 in a fully 
expanded system. Norstar Modular ICS supports six different 
types of trunks:
PRI trunks are used for incoming and outgoing calls over 
an ISDN network. PRI SL-1 lines can provide MCDN 
network functionality in a private network between other 
Norstar...

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one or more telephones. Target lines are numbered 157 to 
348 in a fully expanded system, and 157 to 284 in all 
others.
Telephones can be configured to have an appearance of any 
type of trunk and line, including target lines, but excluding PRI 
trunks. If assigned, they are used for monitoring call usage.
Trunk operating modes (T1)
T1 trunks have four operating modes:
ground start (T1 only)
loopstart (analog and T1)
E&M (analog...

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DID trunks
DID trunks give you direct inward dialing (DID) from the 
public network. A typical application of these trunks is to map 
incoming digits onto target line appearances within the 
Norstar system. DID trunks can operate only as auto-answer 
trunks.
Ta r g e t  l i n e s
204
205
206
207
208
209Central office (CO)
Norstar
DID trunk
593-1234
593-1235
593-1236
593-1237
593-1238
593-1239 

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When a call comes in on a DID trunk, the Norstar system 
interprets the incoming digits in one of the following ways.
If the digits map onto a target line, the call is routed to all 
telephones with an appearance of that target line.
If the digits map onto the DISA DN, the caller hears 
stuttered dial tone. They must enter a six-digit Class of 
Service (COS) password from a DTMF telephone to hear 
system dial tone. 
They can then...

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Analog loop start trunks
Loop start trunks give you incoming and outgoing access to 
the public network. Loop start trunks can be configured as 
manual-answer or auto-answer. The answer mode determines 
how the system handles incoming calls.
When a call comes in on a manual-answer loop start trunk, it 
alerts at all telephones with that line appearance. 
When a call comes in on an auto-answer loop start trunk that 
is configured to...

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To place an outgoing call, a loop start line can be selected by:
pressing a line button on the telephone
dialing a line pool access code
pressing a memory button that has been programmed with 
a line pool access code
Configuration tips
Loop start signaling is supported by Loop Start Trunk 
Cartridges, Call Information (CI) Trunk Cartridges and 
Digital Trunk Interfaces (DTI). Each Loop Start Trunk 
Cartridge or CI Trunk Cartridge...

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Two loopstart trunk cartridges are compatible with 
Modular ICS 6.0. The NT5B40GA-93 can be installed in 
trunk module (TM) slots only. The NT7B75GA-93 can be 
installed in either core slots three or four, or TM slots one, 
two or three.
Analog E&M trunks
An Analog E&M trunk gives you incoming and outgoing 
access to other systems in a private network. E&M trunks can 
be configured as manual-answer or auto-answer. The answer 
mode...

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By default, auto-answer E&M trunks are answered by the 
system with direct inward system access (DISA), and are used 
to provide controlled access to Norstar system resources.
When a call comes in on a manual-answer E&M trunk, it alerts 
at all telephones with that line appearance.
When a call comes in on an auto-answer E&M trunk that is 
configured to answer with DISA, the caller hears stuttered dial 
tone. They must enter a...

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BRI trunks
BRI trunks give you incoming and outgoing access to an ISDN 
network. Like loop start trunks, they can be configured as 
manual-answer or auto-answer. See Ans mode on page 341.
BRI trunks provide a fast, accurate, and reliable means of 
sending and receiving data, images, text, and voice 
information. Using BRI lines allows for faster transmission 
speeds and the addition of a variety of powerful business 
applications,...

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Target lines
A target line is a specific communication path that is reached 
by means of digits received from an incoming trunk. Target 
lines are used to answer incoming calls but cannot be used to 
make outgoing calls.
You can program auto-answer trunks to map to target lines to 
provide for attendant bypass, which allows the call to go 
directly to a department or individual, and line concentration, 
where one trunk can map onto...