Nortel Modular Ics 6.1 Installer Guide

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• call into the Norstar system and use remote features
Callers in the private network can:
• call directly to one or more Norstar telephones
• call into the Norstar system and select an outgoing tie line 
to access other nodes in a private network
• call into the Norstar system and select an outgoing central 
office line to access the public network
• call into the Norstar system and use remote features
Norstar behind a PBX
Norstar Modular 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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Dialing plans
Dialing plans allow users to enter consistent dialing 
information to call other systems, or out to a public network 
through another system. The type of network determines what 
kind of dialing scheme is required.
The Norstar system has routing features that allow you to set 
up a transparent dialing plan with other systems in a public or 
private network. In a private network, you can choose to use 
either a uniform dialing plan (UDP) or a coordinated dialing 
plan (CDP) to determine how the system recognizes private 
network dialing strings.
A networked system uses the Public DN length to determine 
the number of digits that must be collected before the call is 
dialed outside each node on the system. Calls routed over 
private networks using CDP also use the public DNs in concert 
with a destination code that determines the routing of dialed 
DN. With CDP, the node identifier is included in the dialed 
DN string and is unique to each node.
If you create a network-wide dialing plan using CDP:
• all telephone DNs across the network need to be the same 
length (Public DN length)
• the first digit of the DN must be unique to each system, i.e. 
node A has DNs 2222 to 2999, node B has DNS 3222 to 
3999, and so on.
• you indicate that you are using a coordinated dialing plan 
(System Programming/Dialing Plan/Private 
network) 
						

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• you create access codes that are routed out on auto-answer 
lines connected to the other sites (Access Codes and Call 
Routing)
• a telephone can be reached using the access code and the 
telephone number, regardless of where the call originates 
in the network
Calls routed over private networks using UDP require a 
private DN length, since each node requires an identification 
code in the dialing string, which makes the DN length different 
than for a public-routed call.
If you are networked using UDP:
• you indicate a private DN length, which is the number of 
digits required to access sets in the system (System 
Programming/Dialing Plan/Private network)
• each system has a unique location code (System 
Programming/Dialing Plan/Private network)
• you indicate that you are using a UDP dialing plan 
(System Programming/Dialing Plan/Private 
network)
• you set up private access codes (Access codes/Private 
access codes)
• a telephone in another node is accessed using the access 
codes, the location code, and the telephone DN.
Any programming for routing and access codes should be 
carefully planned using the tables supplied with the 
Programming Record. The settings for routing and destination 
codes are fully explained in Services on page 371. 
Note:  Network access codes must not conflict with access 
codes used for other purposes. 
						

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Dialing plan using public linesInstaller password required
For example, imagine that you have a system in a network of 
three offices such as New York, Toronto, and Santa Clara.
If there is no routing, callers would have to dial this way:
• A Norstar user in New York would have to select a line 
pool and dial a number such as 1-416-555-3227 to reach 
telephone 3227 in Toronto (416). 
If there is routing:
• you could create a destination code of 3, and create a route 
that uses the proper line pool and DialOut. In this case, the 
user simply dials 3227, the receiving telephone DN being 
227.
In the DialOut, P stands for pause, a host system signaling 
option. Press ≤‡° to insert a 1.5-second pause in the 
dialing string. See the Modular ICS 6.1 System Coordinator 
Guide for information about other signals.
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 DNs. 
Leading DigitsUse
0Network Direct Dial
221-253 (default)Intercom calls (DNs)
4Coordinated Dialing Plan
5Unused
6Unused
8Call Park Prefix
9All PSTN Calls 
						

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In the table, 4 is used as the initial digit for the Coordinated 
Dialing Plan (CDP), but 5 or 6 could also be used for this 
purpose.
For PRI you need to define a route with a routing code 
(destination code), then assign that code to the telephone.
Dialing plan using E&M linesInstaller password required
By properly planning and programming routing tables and 
destination codes, an installer can create a dialing plan where 
E&M lines between Norstar systems are available to other 
systems in the network
The following figure and programming chart shows how to 
configure a transparent dialing plan for a network of three 
Norstars over E&M lines. 
• Each system must be running the same version of 
MICS 6.1 or MICS-XC 6.1 software. 
• Each system must be equipped with target lines and a 
Trunk Module with an E&M/DISA Trunk cartridge or an 
ICS with a DTI with at least one E&M line. 
						

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Routing by destination codes over E&M lines
New York:
Trk/Line DataLine 049E&M
Ans ModeAuto
Line typePool H
Line 245Target line
Rec’d #2221
Line AccessDN 2221L245: Ring only
Line pool accessLine pool H
New York
Network #: 2221
Red’d #: 2221
Internal #: 2221To r o n t o
Network #: 6221
Red’d #: 6221
Internal #: 6221
Santa Clara
Network #: 4221
Red’d #: 4221
Internal #: 4221 Pool H
Pool BPool N
E&M trunk
E&M trunk
Pool M 
						

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To Santa Clara:
Routing serviceRoute001
UsePool H
DialOutNone
DestCode4
Normal rte001
Absorb0
To Toronto :
Absorb0
Trk/Line DataLine 049E&M
Ans ModeAuto
Line typePool B
Absorb0
Absorb0
Remote accessRem access pkgs01 
Line pool accessPool M: ON
Rem access pkgs02
Line pool accessPool B: ON
Line abilities049
Remote pkg01
Line abilities050
Remote pkg02
Toronto:
Trk/Line DataLine 053E&M
Ans ModeAuto
Line typePool N
Line 260Target line
Rec’d #6221
Line AccessDN 6221L260: Ring only
Line pool accessLine pool N 
						

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In the above example:
If a user in New York calls Toronto within the network, they 
dial 6221. The local Norstar checks the number against the 
routing tables and routes the call according to the destination 
code 6, which places the call using Route 001. 
There is no DialOut change to the number from New York, so 
the call appears on the auto answer line on the Norstar in Santa 
Clara as 6-221. 
Because 6 is also a destination code on the Santa Clara system, 
another call is placed using route 002 from Santa Clara. This 
call arrives at the Toronto system, where the digits 6-221 are 
interpreted as a target line received number. The call will now 
alert at telephone 6221 in Toronto.
To New York:
Routing serviceRoute001
UsePool N
DialOutNone
DestCode4
Absorb0
Normal rte001
To Santa Clara:
Absorb0 
						

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Dialing plans with shared line pools
Installer password required
Using routes and destination codes is a powerful and efficient 
way to create a transparent dialing plan. Line pools offer an 
alternate method of creating a dialing plan or supplementing 
the routing and destination codes. This is the type of dialing 
plan you would create for tandem networking between two or 
more Norstar systems.
Networking with shared line pools
If the Norstar systems are close to each other geographically, 
you can conserve resources by not duplicating access. For 
Network #: 5234
Rec’d #: 234
Internal #: 234Network #: 6334
Rec’d #: 334
Internal #: 334
Network #: 8534
Rec’d #: 534
Internal #: 534Network #: 7434
Rec’d #: 434
Internal #: 434 E&M trunk
E&M trunk
E&M trunkE&M trunk
E&M 
tru
nk
E
&M trun
k
Norstar ANorstar B
Norstar D
Norstar C Pool A(6)
Pool B (7)
Pool C (8)Pool A(5)
Pool B (8)
Pool C (7)
Pool A(5)
Pool B (6)
Pool C (7)Pool A(6)
Pool B (5)
Pool C (8) 
						

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example, system A, B, and C are all within the same area code. 
System A has a line pool to Santa Clara, System B has a line 
pool to Montreal, and system C has a line pool to Miami. 
A Norstar user in system A can reach Miami by calling system 
C and using that line pool to Miami.
To simplify access between Norstar systems, all line pools that 
go to the same destination should have the same line pool 
access code. For example, system A and system B both have a 
line pool to Ottawa. You can configure both systems with the 
same line pool access code for the Ottawa line pool.
A dialing plan similar to the one in the following figure allows 
you to create a company directory that uses line pool access 
codes and unique DNs of a uniform length.
For instance, the person on system A at telephone 234 can 
press an Intercom button and dial 7434. 
This means that telephone 234 has dialed the line pool access 
code of the trunk to system C, and will receive the dial tone of 
system C. The digits 434 then map to the Received number 
434, and ring telephone 434 with an appearance of the 
associated target line.
Tips - Network calls that use routes are subject to any 
restriction filters that are in effect.
If the telephone used to make a network call has an 
appearance of a line used by the route, the call will move from 
the intercom button to the line button.
The telephone used to make a network call must have access 
to the line pool used by the route.
Routes generally define the path between your Norstar switch 
and another switch in your network, not other individual 
telephones on that switch.