Installation Safety warning 13
Safety and installation 14
Important safety instructions 15
North American regulations 17
Telecommunication Registration 17
Federal Communication Commission (FCC) Notice Radio/TV
interference 18
Devices intended to be connected to the Public Switched Tele-
phone Network 18
US 18
Canada 20
Signaling method 21
Ringer Equivalence Number 21
Hearing aid compatibility (HAC) 22
Use of a music source 22
Programming emergency numbers 22
Limited Warranty 23
Exclusions 23
International Regulatory Information 24
What’s new with Norstar 25
New features for version 6.1 25
Welcome to ISDN 27
Comparing ISDN to Analog 27
BRI ISDN service 28
ISDN layers 29
ISDN Bearer capability 29
Services and features for ISDN BRI 30
ISDN hardware 32
Clock Source for ISDN Cards 35
Other ISDN BRI equipment 36
ISDN standards compatibility 37
Planning your ISDN network 37
Ordering ISDN BRI 37
Examples of ISDN Scenarios 57
ISDN applications 57
Video conferencing and video telephony 57
Desktop conferencing 57
File transfer 57
Telecommuting 58
Group 4 fax 58
Remote LAN access 58
Leased line backup 58
LAN to LAN bridging 58
Internet and database access 58
Planning the installation 59
Planning checklist 59
Equipment and supplies 59
Optional equipment 60
Equipment for installing the ICS 60
Location requirements 61
Electrical requirements 61
Internal wiring requirements 62
Spacing requirements 63
Compact ICS 6.1 Installer GuideP0603539 02
Upgrading your system 65
Upgrading a restricted Feature Cartridge 66
Upgrading from 16 telephones to 24 telephones 66
Upgrading to Compact ICS 6.1 67
Upgrading Expansion Cartridge for BRI Card installation 68
Installation 69
Installation checklist 70
Testing the ISDN network connection 72
Mounting the ICS 73
Installing the cartridges 75
Removing the cover 77
Installing the Feature Cartridge 78
Terminating resistors on BRI-ST Cards 79
Installing Trunk Cartridges 81
Installing the Expansion Cartridge 84
Connecting the wiring 87
Connecting the wiring for a Compact ICS 87
Connecting the wiring to the distribution panel 88
Wiring charts 88
BRI Wiring charts 96
Installing Norstar telephones 102
Installing the emergency telephone 102
Installing the device that uses the I-ATA 103
Installing Business Series Terminals 104
Installing Norstar telephones 106
Installing ISDN terminal equipment 109
S or T wiring for terminal equipment 109
S or T extension wiring configurations 109
U-LT wiring for terminal equipment 110
Installing optional equipment 112
Auxiliary ringer (customer supplied) 112
External music source (customer supplied) 112
External paging system (customer supplied) 113
Powering up the system 115
/ v
Programming 117
Programming overview 117
P0603539 02Compact ICS 6.1 Installer Guide
vi /
Profile, Dialpad and Startup programming 118
Installer or System Coordinator Plus programming 119
System Coordinator programming 120
Admin/Basic programming 121
Entering programming for installers 140
Entering programming for system coordinators 140
Entering programming using other passwords 141
Programming sequence 141
Terminals&Sets 142
Line access 142
Line assignment 143
Line pool access 144
Prime line 145
Intercom keys 146
Answer DNs 146
OLI # 147
Capabilities 148
ATA settings 150
Name 151
User prefernces 151
Restrictions 152
Telco features 158
Caller ID set 158
Lines 161
Trunk/Line data 161
Copying Trunk and Line data 162
Trunk type 162
Line type 163
Compact ICS 6.1 Installer GuideP0603539 02
Dial mode 164
Prime set 164
Auto privacy 165
Trunk mode 165
Ans mode 166
Ans with DISA 166
Aux. ringer 167
Full AutoHold 167
LossPkg 168
Rec’d # 169
Name 170
Restrictions 170
Restrn filters 170
Line restrns 171
Remote restrns 172
Telco features 173
Services 174
Ringing service 175
Restrn service 178
Routing service 179
Routes 180
Dest codes 181
Setting up a route for local calling 183
Setting up a route for long distance calling 185
Adding a long distance carrier access code 187
Programming for least cost routing 188
Night sched 190
Using dialing restrictions with routing 191
Common settings 192
VMsg centr tel#s 253
Outgoing Name and Number Blocking 253
Software Keys 255
SysID 255
Password Keys 255
Hardware 256
Cd1-KSU 257
Discon timer 258
Loops 258
Compact ICS 6.1 Installer GuideP0603539 02
Loop 258
Type 259
Lines 259
No SPIDs assignd 260
# of B-channels 260
Network DNs 261
Call type 261
D-packet servc 262
D-packet servc 262
Lp201 262
TEIs 262
No TEIs on loop 262
Sampling 263
DNs on Loop 201 263
Assign DNs 263
Loop DN 264
I-RAD 265
Connecting to the I-RAD 266
Testing 267
/ ix
Troubleshooting 269
Getting ready 270
Types of problems 270
General troubleshooting procedure 271
Problems with telephones 272
Norstar telephone has faulty buttons, display, handset or other
hardware problems 272
Norstar telephone display unreadable 272
Telephone dead 273
Emergency telephone dead 274
Problems with lines 275
Calls cannot be made (but can be received) 275
Dial tone absent on external lines 276
Hung lines at a telephone 276
Auto-answer line rings at a telephone 277
Prime telephone gets misdialed calls 278
Selected line shows Not in service or Not available 279
Selected line pool shows No free lines 279
Problems with the I-ATA 280
P0603539 02Compact ICS 6.1 Installer Guide
x /
Calls do not ring and caller does not receive busy tone 280
I-ATA is always busy 280
Calls cannot be answered (or dial tone is not present when
making calls) 281
Calls cannot be made (but dial tone is present) 281
Problems with optional equipment 283
Auxiliary ringer 283
External paging 284
Music on Hold/Background Music trouble 284
KIM not working 285
Problems with Trunk Cartridges 287
Trunk Cartridge trouble 287
Problems with BRI service 288
The BRI card is connected to the ISDN network
(U-loop) but the LED for one of more loops is not lit 288
Out of service is displayed when a BRI line is selected (LED for
loop is lit) 289
All the LEDs on a BRI Card are flashing 289
Caller hears one ring and then a fast busy signal when placing
a call on a BRI line 290
Problems with the NT1 291
ICS down 292
Problems for network or remote users 294
Remote feature code gets no response 294
Dialed number gets ringback and the wrong person 294
Dialed number gets stuttered dial tone instead of ringback 295
Dialed number gets dial tone instead of ringback 295
Dialed number gets busy tone 296
Dialed number does not get through 296
Dialed DISA number gets ringback instead of stuttered dial
tone 297
Dialed DISA number gets dial tone instead of stuttered dial tone
298
DISA user gets overflow tone when entering COS password
298
Dialed feature code gets overflow tone 300
Dialed feature code gets busy tone 301
Line pool access code gets overflow tone 301
Line pool access code gets ringback 302
Line pool access code gets busy tone 302
Dialed number gets no response 303
Compact ICS 6.1 Installer GuideP0603539 02
Maintenance 305
Maintenance overview 305
Beginning a Maintenance session 306
System version 307
Checking the version of the system 307
Port/DN status 308
Identifying a device connected to the system 309
Checking the version number of the device 310
Checking the state of the device 311
Disabling a device 312
Enabling the device 313
Returning to the beginning 313
Module status 314
Looking at the module inventory 314
Checking the number of Trunk Cartridges attached to a module
314
Checking the state of a module 315
Checking the state of a cartridge 316
Disabling a module or its cartridges 316
Enabling a module or its cartridges 316
Returning to the beginning 317
System test log 318
Checking the items in the log 318
Checking the current alarm 319
Checking when each item in the log occurred 319
Checking the number of consecutive repetitions of an event or
alarm 319
Erasing the log 319
System administration log 320
Checking the items in the log 320
Checking the current alarm 320
Checking when each item in the log occurred 321
Erasing the log 321
Provisioning 322
Cd1-KSU 322
Alarm codes 323
If you see an alarm code 323
Alarm troubleshooting 325
Event messages 328
/ xi
P0603539 02Compact ICS 6.1 Installer Guide
xii /
Dealing with event messages 328
Significant event messages 328
Tests 334
Loopback test 334
Usage Metrics 337
Hunt groups 337
Maintenance records 339
Recording information on the Maintenance records 339
Version number record 340
System test log record 341
System administration log record 342
Specifications 343
Glossary 347
SIndex 367
Backup programming overlays 389
Compact ICS 6.1 Installer GuideP0603539 02
Regulations
Installation Safety warning
Only qualified persons should service this
system.
The installation and service of this hardware is to
be performed only by service personnel having
appropriate training and experience necessary to
be aware of hazards to which they are exposed in
performing a task and of measures to minimize
the danger to themselves or other persons.
Electrical shock hazards from the
telecommunication network and AC mains are
possible with this equipment. To minimize risk to
service personnel and users, the system must be
connected to an outlet with a third-wire ground.
Service personnel must be alert to the possibility
of high leakage currents becoming available on
metal system surfaces during power line fault
events near network lines. These leakage
currents normally safely flow to Protective Earth
ground via the power cord.
Therefore, it is mandatory that connection to an
earthed outlet is performed first and removed last
when cabling the unit. Specifically, operations
requiring the unit to be powered down must have
the network connections (central office lines)
removed first.
This equipment meets all applicable requirements of CSA and UL safety
standards for North America and relevant EN60950 specifications for
European and other markets.
P0603539 02Compact ICS 6.1 Installer Guide
14 / Regulations
Safety and installation
The shock hazard symbol within an equilateral
triangle is intended to alert personnel to electrical
shock hazard or equipment damage.
The following precautions should also be
observed when installing telephone equipment.
• Never install telephone wiring during a lightning
storm.
• Never install telephone jacks in wet locations unless
the jack is specifically designed for wet locations.
• Never touch uninsulated telephone wires or terminals
unless the telephone line has been disconnected at
the network interface.
• Use caution when working with telephone lines.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and maintenance
(servicing) instructions in the literature
accompanying the product.
This symbol (if applicable) on the product is used to identify the following
important information:
For equipment with internal power supplies
•Mains nominal AC voltage 110-120 V~; 60Hz
•Mains nominal AC voltage 220-240 V~; 50Hz
For equipment with external power supplies
•Must be powered from an approved Class 2 power source.
For current ratings, refer to product specific documentation and product
labels.
Compact ICS 6.1 Installer GuideP0603539 02
Regulations / 15
Important safety instructions
When using your telephone equipment, basic safety precautions should
always be followed to reduce the risk of fire, electric shock and injury of
persons, including the following:
•Follow the warnings and instructions marked on the product.
•Unplug this product from the wall outlet before cleaning. Do not use
liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.
•Do not use this product near water, for example, near a bathtub, wash
bowl, kitchen sink, or laundry tub, in a wet basement or near a
swimming pool.
•Do not place this product on an unstable cart, stand or table. The
product may fall, causing serious damage to the product.
•This product should never be placed near or over a radiator or heat
register. This product should not be placed in a built-in installation
unless proper ventilation is provided.
•Do not allow anything to rest on the power cord. Do not locate this
product where the cord will be abused by persons walking on it.
•Do not overload wall outlets and extension cords as this can result in
the risk of fire or electric shock.
•Never spill liquid of any kind on the product.
•To reduce the risk of electric shock, do not disassemble this product,
but have it sent to a qualified service person when service or repair
work is required.
•Unplug this product from the wall outlet and refer servicing to
qualified service personnel under the following conditions:
a. When the power supply cord or plug is damaged or frayed.
b. If the product has been exposed to rain, water or liquid has been
spilled on the product, disconnect and allow the product to dry out
to see if still operates; but do not open up the product.
c. If the product housing has been damaged.
d. If the product exhibits a distinct change in performance.
•Avoid using telephone equipment during an electrical storm. There
may be a remote risk of electric shock from lightning.
P0603539 02Compact ICS 6.1 Installer Guide
16 / Regulations
•Do not use the telephone equipment to report a gas leak in the vicinity
of the leak.
•To eliminate the possibility of accidental damage to cords, plugs,
jacks, and the telephone equipment, do not use sharp instruments
during the assembly procedures.
•Do not insert the plug at the free end of the handset cord directly into
a wall or baseboard jack. Such misuse can result in unsafe sound levels
or possible damage to the handset.
•Disconnect telecommunications lines before unplugging main power
cord.
•Save these instructions
Compact ICS 6.1 Installer GuideP0603539 02
North American regulations / 17
North American regulations
Telecommunication Registration
Norstar equipment meets all applicable requirements of both Industry
Canada CS-03 and US Federal Commission FCC Part 68 and has been
registered under files Industry Canada 332D-5980A and FCC
US:AB6KF15B20705 (key system), US:AB6MF15B20706 (hybrid
system), and US:AB6PF15B23740 (PBX system). Connection of the
Norstar telephone system to the nationwide telecommunications network is
made through a standard network interface jack that you can order from
your local telecommunications company. This type of customer-provided
equipment cannot be used on party lines or coin lines.
Before installing this equipment, users should ensure that it is permissible
to be connected to the facilities of the local telecommunications company.
The equipment must also be installed using an acceptable method of
connection. The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized
maintenance facility designated by the supplier. Any repairs or alterations
made by the user to this equipment, or equipment malfunctions, may give
the telecommunications company cause to request the user to disconnect
the equipment. Users should ensure for their own protection that the
electrical ground connections of the power utility, telephone lines and
internal metallic water pipe system, if present, are connected together. This
precaution may be particularly important in rural areas.
Users should not attempt to make such
connections themselves, but should contact
the appropriate electric inspection authority, or
electrician.
P0603539 02Compact ICS 6.1 Installer Guide
18 / North American regulations
Federal Communication Commission (FCC)
Notice Radio/TV interference
This equipment, has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
Devices intended to be connected to the Public
Switched Telephone Network
State and local requirements for support of
Emergency 911 Dialing service by Customer
Premises Equipment vary. Consult your local
telecommunications service provider
regarding compliance with applicable laws
and regulations.
US
This telephone equipment complies with Part 68, FCC Rules for direct
connection to the Public Switched Telephone Network (The FCC
registration number appears on a label affixed to the ICS).
Your connection to the telephone line must comply with these FCC Rules:
•Use only an FCC Standard network interface jacks and FCC compliant
line cord and plug to connect this equipment to the telephone line.
Compact ICS 6.1 Installer GuideP0603539 02
North American regulations / 19
•If a network interface jack is not already installed in your location, you
can order one from your telephone company. Order the following
network jacks along with the corresponding Facility Interface Code
(FIC):
BRI-U2 and BRI-U4 Cards
NT7B86GB-93 and
NT7B87GB-93
BRI-ST - NT7B76GY-93
(when connected to an NT1 which
has a U interface to the telephone
network)
AC
1.5B
DC 0.3
0.0 B
1.5B
DC 0.3
—RJ49C6.0Y02IS5
—RJ49C6.0Y021S5
RJ21X9.0F02LS2
RJ21X9.0F02LS2
RJ21X9.0F02LS2
RJ21X9.0F02LS2
In some states, customers are permitted to install their own jacks.
•The equipment cannot be used with or connected to a party line or a
public coin phone service provided by the telephone company.
Connection to Party Line Service is subject to state tariffs. Contact the
Public State Utility Commission, Public Service Commission or
Corporation Commission for information.
•It is no longer necessary to notify the Telephone Company of your
system Registration and REN numbers. However, you must provide
this information to the telephone company if they request it.
P0603539 02Compact ICS 6.1 Installer Guide
20 / North American regulations
•If this equipment causes harm to the telephone network, the telephone
company will notify you in advance that temporary discontinuance of
service may be required. If advance notice is not practical, the
telephone company will notify the customer as soon as possible. Also,
you will be advised of your right to file a complaint with the FCC if
you believe it necessary.
•The telephone company may make changes in its facilities, equipment,
operations or procedures that could affect the operation of the
equipment. If this happens the telephone company will provide
advance notice in order for you to make necessary modifications to
maintain uninterrupted service.
•Do not attempt to repair this equipment yourself. If trouble is
experienced with this equipment, please refer to the repair and
warranty information, noted below. If the equipment is causing harm
to the telephone network, the telephone company may request that you
disconnect the equipment until the problem is resolved.
Canada
Before installing this equipment, users should ensure that it is permissible
to be connected to the facilities of the local telecommunications company.
The equipment must also be installed using an acceptable method of
connection. The customer should be aware that compliance with the above
conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations
made by the user to this equipment, or equipment malfunctions, may give
the telecommunications company cause to request the user to disconnect
the equipment.
Compact ICS 6.1 Installer GuideP0603539 02
North American regulations / 21
Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone lines and internal metallic water
pipe system, if present, are connected together. This precaution may be
particularly important in rural areas.
Caution
Users should not attempt to make such connections
themselves, but should contact the appropriate electric
inspection authority, or electrician, as appropriate
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations as specified in the Industry
Canada Standard ICES-003.
Signaling method
The equipment allows signaling in DTMF tones. It can complete calls to
local and long distance lines and can also complete long distance calls via
computer phone systems such as MCI or SPRINT. This equipment is
capable of providing access to interstate providers of operator services
through the use of access codes. Modification of this equipment by call
aggregators to block access dialing codes is a violation of the Telephone
Operator Consumers Act of 1990.
Ringer Equivalence Number
US
The FCC Registration information on the product label, includes a Ringer
Equivalence Number (REN) which is used to determine the number of
devices you may connect to your phone line. A high total REN may prevent
ICSs from detecting ringing in response to an incoming call and may make
placing calls difficult. In most, but not all areas, the sum of the RENs
should not exceed five (5.0). To be certain of the number of devices that
may be connected to a line, as determined by the total RENs, contact the
local telephone company.
Note: RENs are associated with loop start and ground start ports. Do not
use for E&M or digital ports.
P0603539 02Compact ICS 6.1 Installer Guide
22 / North American regulations
Canada
The Ringer Equivalence Number (REN) assigned to each terminal device
provides an indication of the maximum number of terminals allowed to be
connected to a telephone interface. The termination on an interface may
consist of any combination of devices subject only to the requirement that
sum of the ringer equivalence numbers of all the devices does not exceed 5.
Hearing aid compatibility (HAC)
The telephone station sets are compatible with hearing aids equipped with
an appropriate telecoil and is compliant with the requirements of the
Americans with Disabilities Act (ADA).
Use of a music source
In accordance with US, Canadian and international copyright laws, a
license may be required from the American Society of Composers, Authors
and Publishers, or other composers’ or performing rights organization if
Radio, TV or other broadcasts to the public are transmitted through the
Music On Hold or Background Music features of this telecommunication
system.
Programming emergency numbers
When programming emergency numbers and/or making test calls to
emergency numbers:
1.Remain on the line and briefly explain to the dispatcher the reason for
calling before hanging up.
2.Perform such activities in the off-peak hours, such as early mornings
or late evenings.
Substitution of non-approved equipment will void the NORTEL warranty.
Address for warranty and repairs
in the US:
Nortel
640 Massman Drive
Nashville TN 37210
For more information call 1-800-4NORTEL
Compact ICS 6.1 Installer GuideP0603539 02
Address for warranty and repairs
in Canada:
Nortel
30 Norelco Drive
Weston, Ontario M9L 2X6
Limited Warranty / 23
Limited Warranty
Nortel Networks warrants this product against defects and malfunctions
during a one (1) year period from the date of original purchase. If there is
a defect or malfunction, Nortel Networks shall, at its option, and as the
exclusive remedy, either repair or replace the telephone set at no charge, if
returned within the warranty period.
If replacement parts are used in making repairs, these parts may be
refurbished, or may contain refurbished materials. If it is necessary to
replace the telephone set, it may be replaced with a refurbished telephone
of the same design and color. If it should become necessary to repair or
replace a defective or malfunctioning telephone set under this warranty, the
provisions of this warranty shall apply to the repaired or replaced telephone
set until the expiration of ninety (90) days from the date of pick up, or the
date of shipment to you, of the repaired or replacement set, or until the end
of the original warranty period, whichever is later. Proof of the original
purchase date is to be provided with all telephone sets returned for warranty
repairs.
Exclusions
Nortel Networks does not warrant its telephone sets to be compatible with
the equipment of any particular telephone company. This warranty does
not extend to damage to products resulting from improper installation or
operation, alteration, accident, neglect, abuse, misuse, fire or natural causes
such as storms or floods, after the telephone is in your possession.
Nortel Networks shall not be liable for any incidental or consequential
damages, including, but not limited to, loss, damage or expense directly or
indirectly arising from the customers use of or inability to use this
telephone, either separately or in combination with other equipment. This
paragraph, however, shall not apply to consequential damages for injury to
the person in the case of telephones used or bought for use primarily for
personal, family or household purposes.
This warranty sets forth the entire liability and obligations of Nortel
Networks with respect to breach of warranty, and the warranties set forth
or limited herein are the sole warranties and are in lieu of all other
warranties, expressed or implied, including warranties or fitness for
particular purpose and merchantability.
P0603539 02Compact ICS 6.1 Installer Guide
24 / International Regulatory Information
International Regulatory Information
The CE Marking on this equipment indicates
compliance with the following:
This device conforms to Directive 1999/5/EC on
Radio Equipment and Telecommunications
Terminal Equipment as adopted by the European
Parliament And Of The Council.
This is a class A product. In a domestic environment this product may
cause radio interference in which case the user may be required to take
adequate measures.
Information is subject to change without notice. Nortel Networks reserves
the right to make changes in design or components as progress in
engineering and manufacturing may warrant. This equipment has been
tested and found to comply with the European Safety requirements EN
60950 and EMC requirements EN 55022 (Class A) and EN 55024. These
EMC limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial and light
industrial environment.
WARNING
This is a class A product. In a domestic environment this
product may cause radio interference in which case the
user may be required to take adequate measures. The
above warning is inserted for regulatory reasons. If any
customer believes that they have an interference
problem, either because their Nortel Networks product
seems to cause interference or suffers from interference,
they should contact their distributor immediately. The
distributor will assist with a remedy for any problems
and, if necessary, will have full support from Nortel
Networks.
Compact ICS 6.1 Installer GuideP0603539 02
What’s new with Norstar
The Norstar Compact ICS 6.1 software includes several new features and
a few functionality changes.
New features for version 6.1
•Key Indicator Module (KIM) and T7316E Business Series Terminal
(BST) create a Central Answering Position (CAP).
These two pieces of hardware are designed to replace the M7324/CAP
setup. The T7316E can also be deployed as a stand-alone unit, and
works the same way as previous versions of the T7316 with some
minor changes, including an active handsfree key below the main
dialpad. (CAP/KIM assgn on page 225)
The KIM can be used in two configurations. The ordinary KIM
(OKIM) has the same functionality as the current unassigned CAP
module. The enhanced KIM (eKIM) supports multiple lines, including
target lines, and hunt group appearances.
Up to four KIMs can be attached to a T7316E, without requiring a
supplementary power supply. A T7316E can only support a maximum
of four eKIMs, however, it can support up to nine OKIMs, with the
addition of a station auxiliary power supply (SAPS). The system can
support one CAP with an eKIM. This number will include any T7324based CAP installations you might already have. The system can
support any number of CAPS using OKIMs.
T7316E telephones and KIMs also provide call-specific icons to make
call tracking easier.
You cannot program Answer DNs onto a KIM.
•destination code enhancements
— 12-digit destination code: You can specify up to 12 digits as a
destination code, which allows you to support user expectations of
dialing requirements for existing systems. For instance, if your
users are used to dialing 91XXX-XXX-XXXX for a long distant
call, they can continue to do so, so you can provide a seamless
transition to network dialing. (Dest codes on page 181)
— multiple least-cost routing: When you specify a schedule other
than Normal for a destination code, you can specify up to three
P0603539 02Compact ICS 6.1 Installer Guide
26 / What’s new with Norstar
possible routes the call can access, in order of preference. The
system tries the first route, and if that route is not available, the
system moves to the next route, and so on. (Multiple least cost routing on page 189)
•Silent monitor for hunt groups
Your Hunt group supervisors can now monitor hunt group calls, either
silently, or by providing a conference tone to indicate that the call is
being monitored (Monitoring Hunt groups on page 210). Other new
functionality has been added to allow you to determine which
telephones will be allowed to silent monitor (Capabilities on page
148), how many monitoring telephones your system will allow (SM sets on page 248), and what password is required to enter a monitoring
session (Silent Monitor password on page 201). Refer to the Modular ICS 6.1 System Coordinator Guide for a detailed description about
how to use the feature.
•CLID display enhancements: display an incoming call CLID on a
telephone with activated CLID display, where a call is currently
active.
Compact ICS 6.1 Installer GuideP0603539 02
Welcome to ISDN
This chapter provides you with some background information about ISDN
and also includes information about:
•Analog vs. ISDN
•Type of ISDN service
•ISDN layers
•ISDN Bearer capability
•Services and features for ISDN BRI
•ISDN hardware
•ISDN standards compatibility
Integrated Services Digital Network (ISDN) technology provides a fast,
accurate and reliable means of sending and receiving voice, data, images,
text, and other information through the telecom network.
ISDN uses existing analog telephone wires and divides them into separate
digital channels, which dramatically increases the bandwidth.
ISDN uses a single transport to carry multiple information types. What
once required separate networks for voice, data, images, or video
conferencing is now combined onto one common high-speed transport.
Note: Nortel endeavours to test all variations of ISDN BRI and PRI on
Norstar. However, due to the number of variations, this is not always
possible. Check with your service provider about compatibility.
Comparing ISDN to Analog
ISDN offers significantly higher bandwidth and speed than analog
transmission because of its end-to-end digital connectivity on all
transmission circuits. Being digital allows ISDN lines to provide better
quality signaling than analog POTS lines and ISDN out-of band data
channel signaling offers faster call set up and tear down.
While an analog line carries only a single transmission at a time, an ISDN
line can carry one or more voice, data, fax and video transmissions
simultaneously.
P0603539 02Compact ICS 6.1 Installer Guide
28 / Welcome to ISDN
An analog modem operating at 14.4 K takes about 4.5 minutes to transfer
a 1 MB data file and a 28.8 K modem takes about half that time. Using one
channel of an ISDN line, the transfer time is reduced to only one minute. If
two ISDN channels are used, transfer time is just 30 seconds.
When transmitting data, the connect time for an average ISDN call is about
three seconds per call, compared to about 21 seconds for the average
analog modem call.
BRI ISDN service
Basic Rate Interface (BRI) ISDN service provides lines where each line is
made up of separate channels known as B and D channels which transmit
information simultaneously.
BRI is known as “2B+D” because it consists of two B-channels and one
D-channel.
B channels
B channels are the bearer channel and are used to carry voice or data
information and have speeds of 64 kbps. Since each ISDN line (BRI) has
more than one B-channel, a user can perform more than one transmission
at the same time using a single ISDN line.
D channels
The standard signaling protocol is transmitted over a dedicated data
channel called the D-channel. The D-channel carries call setup and feature
activation information to the destination and has speeds of 16 kbps. Data
information consists of control and signal information and packet-switched
data such as credit card verification.
Compact ICS 6.1 Installer GuideP0603539 02
Welcome to ISDN / 29
ISDN layers
ISDN layers refer to the standards established to guide the manufacturers
of ISDN equipment. The layers include both physical connections, such as
wiring and logical connections, which are programmed in computer
software.
When equipment is designed to the ISDN standard for one of the layers, it
works with equipment for the layers above and below it.
There are three layers at work in ISDN for Norstar. To support ISDN
service, all three layers must be working properly.
•Layer 1: A physical connection that supports fundamental signaling
passed between the ISDN network (your service provider) and the
Norstar Compact ICS. When the BRI card LED for a loop which is
used for a network connection is lit, layer 1 is functioning.
•Layer 2: A logical connection between the ISDN network (your
service provider) and the Norstar Compact ICS. Norstar has two of
these connections for each BRI line, one for each of the logical lines.
Without Layer 2, call processing is not possible and there is no dial
tone.
•Layer 3: Also a logical connection between the ISDN network (your
service provider) and the Norstar Compact ICS. For BRI lines, layer 3
is where call processing and service profile identifier (SPID)
information is exchanged. This controls which central office services
are available to the connection. For example, a network connection
can be programmed to carry data calls.
The system of layers is important when you are installing, maintaining, and
troubleshooting an ISDN system. See Problems with BRI service on page
288 for more information about working with the layers.
ISDN Bearer capability
Bearer capability describes the transmission standard used by the BRI line
so that it can work within a larger ISDN hardware and software network.
The bearer capability for BRI is voice/speech, 3.1 kHz audio, and data
(unrestricted 64 kbps, restricted 64 kbps, 56 kbps).
P0603539 02Compact ICS 6.1 Installer Guide
30 / Welcome to ISDN
Services and features for ISDN BRI
As part of an ISDN digital network, your Compact ICS supports enhanced
capabilities and features, including:
•faster call set up and tear down
•high quality voice transmission
•dial-up Internet and local area network (LAN) access
•video transmission
•network name display
•name and number blocking (BRI and analog)
•access to public protocols (NI-1 for BRI)
BRI services and features
•data transmission at speeds up to 128 kbps per loop (depending on the
bandwidth supported by your service provider)
•shared digital lines for voice and data ISDN terminal equipment
Norstar Basic Rate Interface (BRI) cards also support D-channel packet
service between a network and terminal connection. This allows you to add
applications, such as point-of-sale terminals, without additional network
connections.
Any analog or digital network connections can be shared by all Norstar
telephones, peripherals and applications, and ISDN terminal equipment
(TE).
Compact ICS supports the following ISDN services and features offered by
ISDN service providers:
•D-channel packet service to support devices such as transaction
terminals. Transaction terminals are used to “swipe” credit or debit
cards and transmit the information to a financial institution in data
packets.
•calling number identification (appears on both Norstar sets and ISDN
terminal equipment with the capability to show the information)
•Multi-Line Hunt or DN Hunting, which switches a call to another
ISDN line if the line usually used by the Network DN is busy.
Compact ICS 6.1 Installer GuideP0603539 02
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