Nortel Compact Ics 6.0 Installer Guide

							P0992669 03Compact ICS 6.0 Installer Guide
Networking with Norstar
In addition to public network connections, Norstar Compact ICS can be 
integrated into an existing private network or to other Norstar systems to 
form a corporate telecommunications network.
The big picture
Norstar uses enhanced trunking to join other Norstar or customer 
equipment in a private network. Authorized users can also access central 
office lines and Norstar features from outside their Norstar system.
Callers using the Norstar Compact ICS system can
call directly to a specific Norstar telephone
select an outgoing central office line to access the public network
use all of the Norstar features
Callers in the public network can
call into the Norstar Compact ICS system and select an outgoing 
central office line to access the public network
call into the Norstar Compact ICS system and use remote features
Norstar behind a PBX
Norstar Compact ICS can be used behind a PBX. In order to support this 
application, the trunk lines must be set up not to exceed 8 dB total loop loss 
from the serving central office to the connection point at the Norstar ICS. 
						

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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. Norstar 
Compact ICS supports two different types of trunks:
Loop start trunks handle incoming and outgoing calls between Norstar 
and the public network. They are numbered 001-004 and 031-034.
BRI trunks handle incoming and outgoing calls between Norstar and 
an ISDN network. They are numbered from 001-008 and 031-038.
Target lines are virtual communication paths between trunks and 
telephones on the Norstar system. They are incoming lines only, and 
cannot be selected for outgoing calls. You can use target lines to simulate 
direct inward dialing (DID) service by routing calls to telephones 
according to the digits received from the central office on a BRI trunk.
Target lines are numbered 061 to 086. Telephones can  be configured to 
have an appearance of any type of trunk and line (including target  lines).
Loop start trunks
Loop start trunks provide 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 answer with direct inward system access (DISA), the caller hears a 
stuttered dial tone. They must enter a six-digit Class of Service (COS) 
password from a dual tone multifrequency (DTMF) telephone to access 
system dial tone. Once the caller has system dial tone, they can then enter 
a target line number, a line pool access code or a remote feature code. 
By default, auto answer loop start trunks are configured to answer with 
DISA, and are used to provide controlled access to Norstar system 
resources. 
						

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When a call comes in on an auto-answer loop start trunk that is not 
configured to answer with DISA, the caller hears system dial tone. They 
can then enter:
a target line number
a DISA DN, which is the number that will prompt for a COS password
a line pool access code
a remote feature code from a DTMF telephone
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, or pressing a 
memory button that has been programmed with a line pool access code.
Tip - Loop start signaling is supported by Loop Start /
Disconnect Supervision (LS/DS) Analog Trunk Cartridges 
and Call Information (CI) Trunk Cartridges. Each LS/DS 
Analog Trunk Cartridge or CI Trunk Cartridge can provide 
four loop start trunks. To configure the loop start trunks as 
auto-answer, the trunks must have disconnect supervision 
enabled. The central office must provide far end disconnect 
supervision.
The default programming for trunks uses disconnect 
supervision. If the central office does not provide far end 
disconnect supervision, the Trunk Mode setting in Lines 
programming should be changed to unsupervised.
You may configure a loop start trunk as the prime line for a 
Norstar telephone. The prime line is the line the telephone 
u s es  a ut omat i call y i f no oth er  l in e is  chose n or no li ne p ool i s 
entered.
The capabilities available to a remote caller are determined 
by the remote restrictions and remote package assigned to a 
line, or by the set restrictions, line restrictions and remote 
package assigned to the COS password.
Callers can also access the system by using the Auto 
Attendant features. See the Compact ICS Coordinator Guide 
for more information. 
						

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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 the Loop start trunks information that starts on page 42 for 
information on setting the answer mode.
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, including remote LAN access, video conferencing, 
file transfer and Internet access.
For more information see Welcome to ISDN on page 21.
Target lines
A target line is a specific communication path that is reached by means of 
digits received from an incoming BRI trunk. Target lines are used to 
answer incoming calls but cannot be used to make outgoing calls.
You can program auto-answer BRI trunks to map to target lines to provide 
for attendant bypass (calling directly to a department or individual) and line 
concentration (one trunk can map onto several target lines).
No target lines are assigned to sets by default.
Target lines are referred to by line numbers (061-086) in the same way as 
physical lines.
Privacy issue
You can set a target line to Private (default is 
Public), however, such features as Call Pickup 
can still answer these lines at remote telephones. 
						

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Remote system access
The remote access feature allows callers elsewhere on the public network 
to access a Norstar system directly without going through an attendant. 
Once in the system, the remote user can use some of the system’s 
resources. The remote access must be enabled in programming before 
callers can use it.
Norstar Compact ICS systems support remote system access on auto-
answer loop start trunks and can require the remote caller to enter a 
(COS) password for direct inward system access (DISA).
The system resources —dialing capabilities, line pool access and feature 
access —  that a remote user may access depends on the Class of Service 
(COS) assigned to them. See the description of COS on page 46 for more 
details.
To use features on a Norstar system remotely, press 
¥ followed by the 
feature code. Even if you are calling from another Norstar system, press 
¥ 
instead of 
².
Remote access on loop start trunks
Loop start trunks provide remote access to the Norstar system from the 
public network and must be configured as auto-answer in Lines 
programming to provide remote system access. 
A loop start trunk must have disconnect supervision enabled if it is to 
operate in auto-answer mode. 
When a caller dials into the system on a line that has auto-answer, the 
system answers with system dial tone and no COS password is required. In 
this case, control over the system capabilities available to the caller is 
provided only by the restriction filters assigned to the line.
When a caller dials in on a line that has auto-answer with DISA, the system 
answers with stuttered dial tone. This is the prompt  to enter a COS 
password, which determines which system capabilities are available to the 
caller. 
						

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Networking features
Security
Programming provides several ways of protecting your Norstar system 
from unauthorized access or use.
Class of Service
Class of Service (COS) refers to the capabilities that Norstar provides to 
users who access the system from the public or a private network. 
The COS includes:
filters that restrict dialing on the line
an access package, which defines the set of line pools that may be 
accessed and whether or not the user has access to the paging feature.
The COS that is applied to an incoming remote access call is determined 
by:
the filters that you apply to the incoming trunk
the COS password that the caller used to gain access to the Norstar 
system.
In cases where DISA is not automatically applied to incoming calls, the 
remote caller can change the COS by dialing the DISA DN and entering a 
COS password.
To program COS passwords, see COS pswds on page 188 in this guide.
Restriction filters
Restriction filters can be used to restrict the numbers that may be dialed on 
any external line within the Norstar system. Up to 100 restriction filters can 
be created for the system. A restriction filter consists of up to 48 restrictions 
and their associated overrides. 
						

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To restrict dialing within the system, you can apply restriction filters to:
outgoing external lines (as line restrictions)
telephones (as set restrictions)
external lines on specific telephones (as line/set  restrictions)
Restriction filters can also be specified in Restrictions service for times 
when the system is operating according to a schedule. Refer to the 
description in Services on page 168 for more details.
Calling out
Dialed digits must pass both the line restrictions and the set restrictions. 
The line per set (line/set) restriction overrides the line restriction and set 
restriction.
In this diagram, a caller using line 001 could only dial long-distance 
numbers to area codes 212 and 718. A caller using line 003 could not dial 
any long-distance numbers. A caller using line 005 could dial long-distance 
numbers to area codes 212, 718, and 415. 
Line per Set
restriction Set restriction
line 1
line 3
line 5
Line restriction
line 1
line 3
line 5
no long
distance
except
area codes
212, 718, 415no long
distance
except
area codes
212, 718no long
distance
except area
codes 212
718, 214, 713
no long
distance
no long
distance 
						

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Calling in
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 Restrn filters on page 
164 in this guide.
Direct inward system access (DISA)
To control access from the public network, configure auto-answer trunks 
to answer with DISA. Remote callers hear a stuttered dial tone and  must 
then enter a COS password that determines what they are allowed to do in 
the system.
Auto-answer loop start trunks are configured to answer with DISA by 
default. For DISA programming instructions, see Trunk/Line data under 
Lines on page 155 in this guide.
Tip - To restrict dialing from outside the system (once 
a caller gains remote access), apply restriction filters to 
incoming external lines (as remote restrictions).
Remote
restriction
no long
distance
except
area codes
212, 718
line 1
line 3
Line pool
access code
81Remote
callerLine restriction
no long
distance
except
area codes
212, 718, 416no long
distance
except
area codes
212, 718, 416 
						

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Transparent dialing plan
The Norstar system has a routing feature that allows you to set up a 
transparent or coordinated dialing plan with other systems in the public 
network. The goal is to have a network-wide dialing plan where all 
telephone numbers are unique and of a uniform length.
Dialing plans are typically used with a network of systems with a three to 
seven digit dialing access between them.
Any programming for routing should be carefully planned using the tables 
supplied with the Programming Record. The settings for routing and 
destination codes are fully explained under Routing service on page 172. 
This section deals with applying the programming in network situations. 
Dialing plan using public lines
The following illustrations show the Programming Record for a Toronto 
system in a network of three offices: Toronto, Halifax and Vancouver. 
Without routing, a Norstar user in Toronto would have to select a line pool 
and dial 1-902-585-3027 to reach extension 27 in Halifax (902). By 
creating a destination code of 30 and creating a route that uses the proper 
line pool and DialOut, the user simply dials 3027. The same feature is 
available for Vancouver (604).
In the DialOut, P stands for pause, a host system signaling option. Press 
²à¡ to insert a 1.5-second pause in the dialing string. See the System 
Coordinator Guide for information about other signals. 
Routing Service (Services: Routing Service)
Route #
(000-999)DialOut (if required)
(max. 24 digits or characters)
100
1-P-902-585
Use Pool
101
102
103
1-P-604-645
1-P-902-585
1-P-604-645
A   B   C 
A   B   C 
A   B   C 
A   B   C 
A   B   C  
						

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Note that, in this case, only the Normal schedule is being used.
Destination code numbering in a network
Because the system checks the initial digits of a call against the routing 
tables, each type of internal or external call must begin with a unique 
pattern of digits. The following table gives a sample plan for how initial 
digits are assigned in a network of systems with three-digit intercom 
numbers.
In the table, 4 is used as the initial digit for the coordinated dialing plan, but 
5, or 6 could also be used for this purpose.
Leading DigitsUse
0Network Direct Dial
221-253Intercom calls
4Coordinated Dialing Plan
5Unused
6Unused
8Call Park Prefix
9All PSTN Calls
Routing service (continued)
Dest code (Services: Routing service: Dest codes)
NormalService ScheduleSched 1
Absorb
Length
Sched 2Sched 3
DestCode
(max. 7 digits)Use route
(001-999)Use route
(001-999)Use route
(001-999)Use route
(001-999)Absorb
LengthAbsorb
LengthAbsorb
Length
30
31
000100All  0000All000All000All
000 102
All 0000All000All000All
32000000000All 0AllAllAll
Sch ed  nam e
(max. 7 char.)NormalNightEveningLunch
33000 103000000000All 0AllAllAll
000 101