Nortel Modular Ics 6.1 Installer Guide

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Lines
This chapter describes the settings that allow you to determine 
how the lines coming in and going out of the system will be 
assigned.
Lines, whether physical or virtual, are the connecting threads 
that allow users access into and out of the Norstar system to the 
public network or to other private networks.
Lines can be pooled so a number of telephones have access to 
more available lines, or they can be assigned specifically to 
one telephone. There are also a number of ways that a 
telephone can be configured to access line pools and special 
lines like tie lines and private network lines. 
Trunk/Line dataInstaller password required
Trunk data allows you to program settings for lines that affect 
how Norstar communicates with other switches. These 
settings also allow you to determine how lines, including 
target lines, will be used in the Norstar system.
Some Trunk data settings may not appear on the display during 
programming, depending on the type of trunk. Those that 
appear for a given Trunk type are indicated in the following 
table.  
						

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Trunk/Line data settings that appear for a given trunk type
Setting 
Loop start 
Analog
Loop start 
Digital
E&M Analog
DID Analog
DID Digital
Target li n e s
PRI lines
BRI -ST 
BRI-U2
BRI-U4
Groundstart
(T1)
E&M Digital
Fixed
Trunk type√ √√ √√√√ √ √√√
Line type√ √ √√√√√ √ √√—
Dial mode√ √ √√√—— — √√—
Rec’d #— — ——— √— — ———
If busy— — ———√— — ———
PrimeSet√ √ √√√√√ √ √√—
Auto 
privacy√ √ √√√—— √ √√—
Trunk 
mode√ √ ————— — ———
Ans mode√√√√——— √ √√—
Ans with 
DISA√ √ √———— √ √√—
Link at CO√——√——— — ———
Aux. ringer√ √ √√√√— √ √√—
Full 
AutoHold√ √ ————— √ ———
LossPkg√ — ————— — ———
Signal— — √√√—— — —√—
ANI 
Number— — √√√—— — —√—
DNIS 
Number——√√√—— — —√—
Gain——√√——— — ——— 
						

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Copying Trunk and Line data
At the Trk/Line data display COPY
 appears. This allows you 
to copy programming from one line to other lines.
Trunk type
The Trunk type heading shows Loop, DID, PRI, BRI-ST, BRI-
U4, BRI-U2, E&M, Ground or Fixed.
You can only change this setting for lines connected to a DTI. 
For all other lines, such as analog lines and BRI lines, the trunk 
type is determined by the Trunk Cartridge type. The system 
simply displays the trunk type; you cannot change it. To 
change the Trunk Cartridge or BRI Card, see Hardware on 
page 482.
Tips - In copying data from a physical trunk to a target 
line, or the other way around, only the data in common is 
copied. For example, copying a target line to an E&M trunk 
copies only the Line data settings because there are no Trunk 
data settings for a target line.
You cannot copy programming between lines on different types 
of Trunk Cartridges. If you try to copy line programming 
between lines on different types of Trunk Cartridges, the 
display shows Incompatible Cd, then returns to 
Show line: _. 
The Received number of a target line is a unique number and 
cannot be copied.
Changing the settings for a trunk type on a 
system that is in use, may cause calls to be 
dropped. 
						

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Line type
This setting specifies how the line is to be used in relation to 
other lines in the system. 
Press CHANGE
 to select the setting: Public, Private to:, or 
Pool (A to O or PRI-A to  PRI-D).
•A Public line can be accessed by more than one telephone.
•A Private line can be assigned only to one telephone and 
the prime telephone for that line. Use CHANGE
 and the 
dialpad to enter the internal number of the telephone.
•Pool assigns the line to one of the line pools. If a line is 
assigned to a line pool, but is not assigned to any 
telephone, that line is available only for outgoing calls (for 
example, PRI lines).
Enable Trunk Cartridges
If you disabled any Trunk Cartridges to perform 
programming, enable them now using 
Module status under Maintenance or your 
system will not function properly. See Module 
status on page 521 for information about 
enabling Trunk Cartridges in Module status.
Tips - Line pools must never contain a mixture of loop 
start lines and E&M lines. All E&M lines in a given line pool 
should go to the same location.
Try to avoid putting unsupervised loopstart lines in a line pool. 
These lines can become hung, especially when a remote user 
uses the line pool to make an external call. 
						

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There are two more programming settings that must be 
assigned before a line pool can be used:
• You must assign line pool access to telephones in 
Line access programming.
• You must assign system-wide line pool access codes in 
System prgrming for line pools A to 0, and/or routes and 
destination codes. PRI line pools can only be accessed by 
being assigned to routes and destination codes.
Line connected to a DTI
The Line setting shows the trunk type for a line. 
For lines connected to a DTI, press CHANGE
 to select one of 
these settings: Loop, E&M, DID, Ground, Fixed, PRI.
• Loop is used for loop start trunks
• E&M is used for the first two line numbers on E&M trunks
Tips - A telephone can be administered to search 
automatically for an idle line from several lines appearing on 
the telephone. Assign a line pool as the prime line 
(in Line access) and all the lines in the line pool must appear 
on that telephone. 
When the user lifts the receiver or presses the handsfree 
button, any one of the lines, if idle, can be selected by 
Automatic Outgoing Line selection.
This is not available for PRI line pools.
Tips - E&M Trunk Cartridges have two E&M lines and 
two DTMF receivers (instead of four lines, as in a Loop Start 
Trunk Cartridge). For example, if an E&M Trunk Cartridge 
has the range of line numbers 049 to 052, numbers 049 and 
050 are E&M lines, and numbers 051 and 052 are the DTMF 
receivers. The display for line 050 appears as
 Line050:E&M 
and for line 051 appears as Line051:DTMF. 
						

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• DID is used for direct inward dialing trunks
• ground is used for groundstart (T1) trunks
• PRI is used for ISDN-PRI, which includes the SL-1 
MCDN protocol for networking.
Dial mode
Dial mode allows you to specify whether dual tone 
multifrequency (DTMF) or pulse signaling is used on the 
trunk. 
Press CHANGE
 to select the setting: Tone or Pulse.
Tips - Changing the settings for a trunk type on a system 
that is in use, may cause calls to be dropped.
When assigning lines to line pools, consider your network 
configuration. You may be able to create a unified dialing 
plan by assigning lines to the same location to the same line 
pool on each of your systems. For example, if system A and 
system B each have tie lines to system C, assign the tie lines to 
pool D on each of the systems.
If you plan to program the prime line as I/C (intercom) for 
some telephones, you may wish to assign loop start lines to the 
first line pool. Remember that when the system searches for an 
outgoing line, it begins at line pool A and chooses the first 
available line.
Assigning a single E&M trunk to a line pool allows features 
like Ring Again to help manage access to a shared resource.
You cannot assign target lines (157-284/348) to a line pool.
Tips - For DID and E&M lines connected to a DTI, the 
Tone setting does not appear if Signal is Immediate. 
						

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Rec’d #
The Received number setting applies only to target lines. 
Target lines are: 157 to 284 for systems running MICS version 
6.0 and greater, and 157 to 348 for systems running MICS-XC 
version 6.0 and greater. It allows you to specify the digits 
which make a specific target line ring. The default value is 
None.
Use CHANGE
, and the dialpad to program the digit string for 
each target line.
If busy
When a call is received on a target line that is already busy, 
you can choose if the caller gets a busy tone or if the call is 
forwarded to the prime set. 
Busy tone only works for PRI and BRI trunks on target lines. 
Programming is done in Trunk/Line Data under Lines. 
Press CHANGE
 to select one of these settings: To prime or 
BusyTone.
Tips - A Received number can be from three to seven digits 
long. It is programmed under System prgming. The default 
length is three for all systems.
A received number cannot be the same as, or be the start digits 
of a line pool access code, a destination code, the DISA DN or 
the Auto DN.
If you are configuring auto-answer BRI trunks to map to target 
lines, the received number should be the same as the 
Network DN supplied by your service provider. The call will 
be directed to the prime telephone for the incoming line if the 
Network DN is not used. 
						

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Prime set
This feature allows you to assign a telephone to provide 
backup answering for calls on the line. Unanswered calls are 
redirected to the prime telephone. 
Use CHANGE
 and the dialpad to enter the internal number of the 
prime telephone.
The default prime set for each line on a system with three-digit 
DNs is 221
.
Auto privacy
This feature controls whether one Norstar user can select a line 
in use at another telephone to join an existing call. The default 
setting is Privacy on, so that nobody with a Norstar telephone 
can press a line appearance on their telephone to join a call in 
progress at another telephone. 
Press CHANGE
 to select either: Y (on) or N (off). 
Note:  This feature does not work on target lines or PRI lines.
Tips - For auto-answer trunks, calls ring only at the prime 
telephone for a trunk, and only when overflow call routing is 
active.
Each line can be assigned only one prime telephone.
Tips - Users can change a line privacy setting for an 
individual call using the Privacy feature (≤°‹). 
						

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Trunk mode
Trunk mode allows you to specify either disconnect 
supervision or unsupervised. Disconnect supervision, also 
referred to as loop supervision, releases an external line when 
an open switch interval (OSI) is detected during a call on that 
line. This prevents the line from remaining unavailable for 
other Norstar users.
Press CHANGE
 to select the setting: Unspr or Super.
•Unspr (the default) turns disconnect supervision off for the 
line.
•Super assigns supervised mode, if supported by the line. 
otherwise, the line functions as unsupervised.
Ans mode
The Answer mode setting appears on the display during 
programming for loop start and BRI lines with a Trunk mode 
setting of Super, for groundstart (T1) lines, and for E&M 
lines. Press CHANGE
 to select the setting: Manual or Auto.
Tips - The duration of an open switch interval (OSI) before 
Norstar disconnects a call is programmed by the Discon 
timer setting under Hardware. 
Disconnect supervision is required for loop start trunks to 
operate in auto-answer mode or with DISA. It is also required 
to conference with two external callers. The line must be 
equipped with disconnect supervision from the central office 
for the Super option to work.
Tips - If loop start lines are set to Auto, you will require 
an E&M card for the DTMF receivers to function properly. 
						

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Ans with DISA
When activated, the Answer with DISA setting specifies that a 
trunk is answered with stutter dial tone. This feature is only 
active if Ans Mode is set to Auto.
Press CHANGE
 to select the setting: Y (Yes) or N (No). 
To program DISA on PRI trunk, see Programming Direct 
Inward System Access (DISA) on PRI trunks on page 72.
Tips - Remember that disconnect supervision is required if 
loop start trunks need to operate in auto-answer mode. 
You should change the Answer with DISA setting to N for E&M 
trunks in a private network operating in auto-answer mode. 
The default, Y (Yes), causes the system to expect a Class of 
Service password after it automatically answers a trunk.
Tips - For loop start and E&M lines this setting only 
appears if Answer mode is Auto. 
Set Ans with DISA to No for E&M lines on an enhanced 
switched network (ESN) to operate properly in auto-answer 
mode.
Tips - When an incoming call comes in on an auto-answer 
loop guarded or Earth calling line that is not configured to 
answer with DISA, the caller hears system dial tone. They can 
then enter a DID line public received number to dial direct to 
an extension, a line pool access code to break out, or a remote 
feature code from a DTMF telephone if a suitable remote 
access package has been assigned.