Nortel BCM50 User manual

Part No. N0XXXXX XX
December 13, 2004
BCM50
ISDN Device Installation Guide
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N0XXXXX XX
Copyright © 2004 Nortel Networks
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The information in this document is subject to change without notice. The statements, configurations, technical data, and
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information in this document is proprietary to Nortel Networks NA Inc.
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Contents 1
BCM50 ISDN Device Installation Guide
Table of Contents
ISDN overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Welcome to ISDN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Services and features for ISDN BRI and PRI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ISDN hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PRI hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
BRI hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Clock Source for ISDN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ISDN BRI NT1 equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ISDN standards compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Planning your ISDN network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ordering ISDN PRI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Ordering ISDN BRI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Supported ISDN Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
BRIM wiring chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Module configuration: Trunk modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fitting the procedure into the over-all picture: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Configuring the trunk module parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Module parameters list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
BRI ISDN: BRI loop properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Configure loop type and general parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
T-loop general settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
T-loop SPIDS and network DNs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
T-loops D-packet service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
S-loops assigned DNs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Programming BRI S-loops, lines and ISDN devices . . . . . . . . . . . . . . . . . . 33
Prerequisites: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Setting BRI properties for ISDN device connections . . . . . . . . . . . . . . . . . . . . . . . . . . 33
DN records: ISDN devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Configuring an ISDN telephone DN record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
BRI ISDN: BRI T-loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Prerequisites: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Process overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Configuring BRI T-loop parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Configuring BRI lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DN records parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Main screen tabs: common fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Line Access tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Line Access - Line Assignment tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

2Contents
BCM50 ISDN Device Installation Guide
Line Access - Line Pool Access tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Line Access - Answer DNs tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Capabilities and Preferences main tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Capabilities and Preferences - Capabilities tab . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Capabilities and Preferences - Preferences tab . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Capabilities and Preferences - ATA settings tab . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Capabilities and Preferences - IP Terminal Details tab . . . . . . . . . . . . . . . . . . . . . 59
Capabilities and Preferences - Button Programming tabs . . . . . . . . . . . . . . . . . . 60
Capabilities and Preferences - User Speed Dial tab . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Restrictions main tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Restrictions - Set Restrictions tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Restrictions - Line/Set Restrictions tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3
ISDN overview
ISDN overview
This section provides some general information about using ISDN lines on your Enterprise Edge
system. Detailed information about ISDN is widely available through the internet. Your service
provider can also provide you with specific information to help you understand what suits your
requirements.
Information in this section includes:
•“Welcome to ISDN” on page 3
•“Services and features for ISDN BRI and PRI” on page 5
•“ISDN hardware” on page 9
•“ISDN standards compatibility” on page 13
•“Planning your ISDN network” on page 13
•“Supported ISDN Protocols” on page 15
Welcome to ISDN
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 it into separate digital channels which
increases 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.
Nortel Networks endeavours to test all variations of ISDN PRI on Enterprise Edge; however, due
to the number of variations, this is not always possible.
This section includes information about:
•“Types of ISDN service” on page 4
•“ISDN Layers” on page 4
•“ISDN bearer capability” on page 5
Analog versus ISDN
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.

4
ISDN overview
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.
An analog modem operating at 14.4 K takes about 4.5 minutes to transfer a 1MB data file and a
28.8K modem takes about half that time. Using one channel of an ISDN line, the transfer time is
reduced to only 1 minute and 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.
Types of ISDN service
Two types of ISDN services (lines) are available: Basic Rate Interface (BRI) and Primary Rate
Interface (PRI). 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.
• PRI is known as 23B+D(in North America) or as 30B+D (in Europe). In North America,
23B+D consists of 23 B-channels and one D-channel (T1 carrier). In Europe, 30B+D consists
of 30 B-channels and one D-channel (E1 carrier).
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 link (BRI or PRI) has more than one B-channel, a user
can perform more than one transmission at the same time, using a single ISDN link.
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 (BRI) and 64 kbps PRI. Data information consists of control
and signal information and for BRI only, packet-switched data such as credit card verification.
ISDN Layers
ISDN layers refer to the standards established to guide the manufacturers of ISDN equipment and
are based on the OSI (Open Systems Interconnection) model. 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 Enterprise Edge. 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 Enterprise Edge system. When the LED on a BRI S/T
Media Bay Module configured as BRI is lit, your layer 1 is functioning.
• Layer 2: A logical connection between the central office or the far end and the Enterprise Edge
system. Enterprise Edge has one or two of these connections for each BRI link, and one for
each PRI link. Without Layer 2, call processing is not possible and there is no dial tone.

5
ISDN overview
• Layer 3: Also a logical connection between the ISDN network (your service provider) and the
Enterprise Edge system. 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.
Note: Throughout this chapter, references are made to Service profile identifiers (SPIDs).
SPIDs are a part of the BRI National ISDN standard. SPIDs are not used in the ETSI BRI
standard or on PRI.
The system of layers is important when you are installing, maintaining, and troubleshooting an
ISDN system. For information about troubleshooting ISDN, see the System Management User
Guide.
ISDN bearer capability
Bearer capability describes the transmission standard used by the BRI or PRI line so that it can
work within a larger ISDN hardware and software network.
The bearer capability for BRI and PRI is voice/speech, 3.1 kHz audio, and data (unrestricted 64
kbps, restricted 64 kbps, or 56 kbps).
Services and features for ISDN BRI and PRI
As part of an ISDN digital network, your system 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
•networknamedisplay
• name and number blocking (PRI, BRI and analog)
• access to public protocols
This section discusses features and services in the following sections:
•“Network name display” on page 7
•“Name and number blocking (ONN)” on page 7
•“Call by Call Service Selection for PRI” on page 8
•“Emergency 911 dialing” on page 8
•“2-way DID” on page 9
•“Dialing plan and PRI” on page 9

6
ISDN overview
PRI services and features
These are the services and features provided over PRI lines:
• Call-by-call service selection (NI protocol)
• Emergency 911 dialing, internal extension number transmission
• access to Meridian 1 private networking (SL-1 protocol)
BRI services and features
These are the services and features provided over BRI lines:
• 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
Enterprise Edge Basic Rate Interface (BRI) also support D-channel packet service between a
network and terminal connection. This allows you to add applications such as point-of-sale
terminals (POSTA) without additional network connections. Connecting a POSTA allows
transaction terminals (devices where you swipe credit or debit cards) to transmit information using
the D channel of the BRI line, while the B channels of the BRI line remain available for voice and
data calls. A special adapter links transaction equipment, such as cash registers, credit card
verification rigs, and point-of-sale terminals, to the X.25 network, which is a data communications
network designed to transmit information in the form of small data packets.
To support the D-packet service, your ISDN network and financial institution must be equipped
with a D-packet handler. To convert the protocol used by the transaction equipment to the X.25
protocol, your ISDN network must also be equipped with an integrated X.25 PAD which works
with the following versions of X.25: Datapac 32011, CCITT, T3POS, ITT and API. The ISDN
service package you order must include D-packet service (for example, Package P in the United
States; Microlink™ with D-channel in Canada).
Your service provider supplies a Terminal Endpoint Identifier (TEI) and DN to support D-packet
service. The TEI is a number between 00 and 63 (in Canada, the default range is 21-63). Your
service provider may also supply you with a DN to program your D-packet device. The DN for
D-packet service becomes part of the dialing string used by the D-packet to call the packet handler.
Service provider features
Enterprise Edge supports the following ISDN services and features offered by ISDN service
providers:
• D-channel packet service (BRI only) 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 Enterprise Edge sets and ISDN terminal
equipment with the capability to show the information)

7
ISDN overview
• 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. (BRI only)
• Subaddressing of terminal equipment (TE) on the same BRI loop. However, terminal
equipment which supports sub-addressing is not commonly available in North America. (BRI
only)
Transmission of B-channel packet data using nailed up trunks is not supported by Enterprise Edge.
Contact your ISDN service provider for more information about these services and features. For
more information about ordering ISDN service in North America, see “Ordering ISDN PRI” on
page 14 and “Ordering ISDN BRI” on page 14.
The terminal equipment (TE) connected to the Enterprise Edge system can use some feature codes
supported by the ISDN service provider.
Network name display
This feature allows ISDN to deliver the Name information of the users to those who are involved
in a call that is on a public or private network..
Your Enterprise Edge system displays the name of an incoming call when it is available from the
service provider. If the Calling Party Name has the status of private it may be displayed as
Private name if that is how the service provider has indicated that it should be displayed. If the
Calling Party Name is unavailable it may be displayed as Unknown name.
Your system might display the name of the called party on an outgoing call, if it is provided by
your service provider. Your system sends the Business Name concatenated with the set name on
an outgoing call but only after the Business Name has been programmed.
The available features include:
• Receiving Connected Name
• Receiving Calling Name
• Receiving Redirected Name
• Sending Connected Name
• Sending Calling Party Name
Consult your customer service representative to determine which of these features is compatible
with your service provider.
Name and number blocking (ONN)
(North America only)
When activated FEATURE 819 allows you to block the outgoing name and/or number on a
per-call basis. Name and number blocking can be used with a Enterprise Edge set.

8
ISDN overview
Consult your customer service representative to determine whether or not this feature is
compatible with your provider.
Call by Call Service Selection for PRI
(North America only)
PRI lines can be dynamically allocated to different service types with the Call by Call feature. PRI
lines do not have to be pre-allocated to a given service type. Outgoing calls are routed through a
dedicated PRI Pool and the calls can be routed based on various schedules.
The service types that may be available, depending on your service provider are described below.
• Public: Public service calls connect your Enterprise Edge set with a Central Office (CO). DID
and DOD calls are supported.
• Private: Private service calls connect your Enterprise Edge set with a Virtual Private Network.
DID and DOD calls are supported. A private dialing plan may be used.
• Tie: Tie services are private incoming and outgoing services that connect Private Branch
Exchanges (PBX) such as Enterprise Edge.
• FX (Foreign Exchange): FX service calls logically connect your Enterprise Edge telephone to
a remote CO. It provides the equivalent of local service at the distant exchange.
• Outwats: Outwats is for outgoing calls. This allows you to originate calls to telephones in a
specific geographical area called a zone or band. Typically a flat monthly fee is charged for
this service.
• Inwats: Inwats is a type of long distance service which allows you to receive calls originating
within specified areas without a charge to the caller. A toll-free number is assigned to allow for
reversed billing.
Consult your customer service representative to determine whether or not this feature is
compatible with your provider.
Emergency 911 dialing
(North America only)
The ISDN PRI feature is capable of transmitting the telephone number and internal extension
number of a calling station dialing 911 to the Public Switched Telephone Network (PSTN). 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. For most installations the following configuration rules
should be followed, unless local regulations require a modification.
• All PSTN connections must be over PRI.
• In order for all sets to be reached from a Public Safety Answering Position (PSAP), the system
must be configured for DID access to all sets. In order to reduce confusion, the dial digits for
each set should be configured to correspond to the set extension number.
• The OLI digits for each set should be identical to the DID dialed digits for the set.

9
ISDN overview
• The routing table should route 911 to a PRI line pool.
• If attendant notification is required, the routing table must be set up for all 911 calls to use a
dedicated line which has an appearance on the attendant console.
• The actual digit string 911 is not hard-coded into the system. More than one emergency
number can be supported.
If transmission of internal extension numbers is not required or desired, then it is recommended
that the person in charge of the system maintain a site map or location directory that allows
emergency personnel to rapidly locate a Enterprise Edge set given its DID number. This list should
be kept up to date and readily available.
IP telephony note: Ensure that you do not apply a 911 route to an IP telephone that is off the
premises where the PSAP is connected to the system.
2-way DID
With PRI the same lines can be used for receiving direct inward dialing (DID) and for making
direct outward dialing (DOD) calls.
The dialing plan configured by your customer service representative determines how calls are
routed. Consult your customer service representative to determine whether or not this feature is
compatible with your service provider.
Dialing plan and PRI
The Dialing Plan supports PRI connectivity to public and private networks. The dialing plan is a
collection of features responsible for processing and routing incoming and outgoing calls. All PRI
calls must go through a dialing plan.
Notes about the dialing plan:
• allows incoming calls to be routed to sets based on service type and digits received
• provides the ability to map user-dialed digits to a service type on a Call by Call basis
• allows long distance carrier selection through user-dialed Carrier Access Codes
Consult your customer service representative to determine how your dialing plan is configured.
ISDN hardware
To support connections to an ISDN network and ISDN terminal equipment, your Enterprise Edge
must be equipped with a BRI S/T Media Bay Module (BRIM) or a Digital Trunk Media Bay
Module (DTM) card configured for PRI.
This section describes the hardware:
•“PRI hardware”
•“BRI hardware” on page 10

10
ISDN overview
PRI hardware
The Digital Trunk Media Bay Module (DTM) is configured for PRI. In most PRI network
configurations, you need one DTM configured as PRI to act as the primary clock reference. The
only time when you may not have a DTM designated as the PRI primary clock reference is in a
network where your Enterprise Edge system is connected back-to-back with another switch using
a PRI link. If the other switch is loop-timed to your Enterprise Edge system, your DTM (PRI) can
be designated as a timing master.
If your Enterprise Edge has more than one DTM configured as PRI, you must assign the first DTM
as the primary reference, the second DTM as the secondary reference, and the third DTM as the
timing master.
If the system has a BRI module, it should be set as the timing master when a DTM in the same
network is defined as the primary reference.
BRI hardware
The loops on the BRI module can be programmed to support either network or terminal
connections. This allows you to customize your arrangement of lines, voice terminals, data
terminals and other ISDN equipment. This section describes some basic hardware configurations
for network and terminal connections for each loop type.
A BRI module provides four loops. Each loop can be individually programmed as:
• an S reference point connection (S loop) to ISDN terminal equipment (TE), or
• a T or S reference point connection (T loop or S loop) to an ISDN network using an external
NT1

11
ISDN overview
S Reference Point
The S reference point connection provides either a point-to-point or point-to-multipoint digital
connection between Enterprise Edge and ISDN terminal equipment (TE) that uses an S interface.
Refer to the figure below.
S loops support up to seven ISDN DNs, which identify TE to the Enterprise Edge system.
Figure 1 S reference point
T Reference Points
The T reference point connections provide a point-to-point digital connection between the ISDN
network and Enterprise Edge. Refer to the figure below.
A T loop provides lines that can be shared by all Enterprise Edge telephones, peripherals and
applications, and ISDN TE.
Inspect FORWARDCallers
Inspect FORWARD Callers
MXP
MXP
Inspect FORWARDCallers
Inspect FORWARD Callers
MXP
MXP
Inspect FORWARDCallers
Inspect FORWARD Callers
MXP
MXP
point-to-point
ISDN TE
ISDN TE
ISDN TE
(with terminating resistors)
ISDN TE
(with terminating resistors)
Enterprise Edge
s
s

12
ISDN overview
Figure 2 T reference point
A T loop can be used in combination with an S loop to provide D-packet service for a point-of-sale
terminal adapter (POSTA) or other D-packet device. D-packet service is a 16 kbps data
transmission service that uses the D-channel of an ISDN line. The T and S loops must be on the
same physical module.
Clock Source for ISDN
Systems with ISDN interfaces need to synchronize clocking with the ISDN network and any ISDN
terminal equipment connected to the network. Systems synchronize clocking to the first
functionally available network connection. If there are excessive errors on the reference network
connection, the next available network connection is used for clock synchronization. The clock
synchronization process generates alarm codes and event messages. Clock synchronization is
supported by the DTM, BRI module, and FEM.
The Enterprise Edge derives timing from the network using T reference points (loops). Terminal
equipment on S reference points (loops) derive timing from the Enterprise Edge system.
When you configure the network connections to the Enterprise Edge, you should take into account
the system preferences for selecting loops for synchronization:
• lower numbered loops have preference over higher numbered loops
• the loop preference order is: 201, 202, 203, 204 etc.
• the system skips S and analog loops on Mod2 Card 1, when selecting a network connection for
synchronization
Systems with only S loops act as timing masters for the attached terminal equipment (TE), and are
not synchronized to the network. ISDN TE without access to a network connection (BRI lines) has
limited or no functionality.
If your system has both a BRI S/T configured as BRI, and a DTM configured as PRI, it is
recommended that you use PRI as the primary clock source. See “PRI hardware” on page 10.
network
connection
T
ISDN
Enterprise Edge

13
ISDN overview
ISDN BRI NT1 equipment
The NT1 (network termination type 1) connects an S interface (four-wire) to a U interface
(two-wire). In most cases, it connects loops from a BRI module to the network connection, which
uses the U interface.
The NT1 converts and reformats data so it can be transmitted to and from the S or T connection. In
addition, it manages the maintenance messages travelling between the network and the NT1, and
between the NT1 and the Enterprise Edge system.
The NT1 from Nortel Networks is packaged two ways:
• a stand alone package which contains one NT1 card (NTBX80XX) and a power supply
(NTBX81XX)
• a modular package which contains up to 12 NT1 cards (NTBX83XX) and a power supply
(NTBX86AA)
ISDN standards compatibility
In North America, Enterprise Edge ISDN equipment supports National ISDN standards for basic
call and calling line identification services. Enterprise Edge BRI is compliant with National
ISDN-1 and PRI is compliant with National ISDN-2.
Enterprise Edge does not support EKTS (Electronic Key Telephone System) or CACH (Call
Appearance Call Handling).
In Europe, Enterprise Edge supports ETSI Euro and ETSI QSIG standards, and PRI SL-1 protocol.
Planning your ISDN network
Consult the Installation and Maintenance Guide to determine a configuration of ISDN trunks and
terminal equipment (TE) for the Enterprise Edge system, then order the appropriate ISDN
capability package from your ISDN service provider.
For ISDN BRI service, your service provider supplies service profile identifiers (SPIDs), network
directory numbers (Network DNs), terminal endpoint identifiers (TEIs), and other information as
required to program your Enterprise Edge, TE and other ISDN equipment.
Enterprise Edge does not support any package with EKTS or CACH. EKTS is a package of
features provided by the service provider and may include features such as Call Forwarding, Link,
Three-Way Calling, and Calling Party Identification.

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ISDN overview
Ordering ISDN PRI
This section provides information about how to order ISDN PRI service for your Enterprise Edge.
Ordering ISDN PRI Service in Canada
In Canada, order Megalink™ service, the trade name for standard PRI service and set the
Enterprise Edge equipment to the supported protocol that is identified by your service provider,
either DMS-100 or NI-2.
Ordering ISDN PRI Service in United States
In the United States order PRI service from your service provider. Set the Enterprise Edge
equipment to the PRI protocol indicated by your service provider.
Ordering ISDN PRI Service Outside of Canada and the United States
Outside of Canada and the United States order Euro ISDN PRI and/or BRI service from your
service provider. Set the Enterprise Edge equipment to the Euro ISDN protocol.
Ordering ISDN BRI
This section provides information about how to order ISDN BRI service for your Enterprise Edge.
Ordering ISDN BRI Service in Canada
In Canada, order Microlink™ service, the trade name for standard BRI service. You can order
either regular Microlink™ service, which includes the CLID feature, or Centrex Microlink™,
which includes access to additional ISDN network features, including Call Forwarding).
When ordering Microlink™ service, it must be ordered with EKTS turned off. If you will be using
a point-of-sale terminal adapter (POSTA), ask for D-packet service to be enabled.
Ordering ISDN BRI Service in the United States
In the U.S., regardless of the CO (Central Office) type, order National ISDN BRI-NI-1 with EKTS
(Electronic Key Telephone System) turned off. Use the following packages as a guideline for
ordering your National ISDN BRI-NI-1. However, we recommend using packages M or P with the
Enterprise Edge system. Contact your service provider for more information about the capability
packages it offers. Bellcore/National ISDN Users Forum (NIUF ISDN packages supported by
Enterprise Edge (for ordering in U.S.).

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ISDN overview
If you want to transmit both voice and data, and support D-channel packet service, order package
P. However, Enterprise Edge does not support the flexible calling for voice and additional call
offering features that are included in package P.
Multi-Line Hunt may be ordered with your package. When a telephone number (the Network DN)
in the group of numbers assigned by your service providers is busy, the Multi-Line Hunt feature
connects the call to another telephone number in the group. Enterprise Edge supports the feature
only on point-to-point, network connections (T loop). Check with your service provider for more
information about Multi-Line Hunt.
Any of the ISDN packages will allow you to use sub-addressing, but your ISDN TE must be
equipped to use sub-addressing for the feature to work.
Ordering ISDN BRI Service Outside Canada or the United States
Outside of Canada or the United States order Euro ISDN PRI and/or BRI service from your service
provider. Set the Enterprise Edge equipment to the Euro ISDN protocol.
Supported ISDN Protocols
The switch used by your service provider must be running the appropriate protocol software and
the correct version of that software to support ISDN PRI and BRI. Each protocol is different and
supports different services. Contact your service provider to make sure that your ISDN connection
has the protocol you require.
Capability Feature set Optional features
Point-of-
sale Voice Data
MAlternate
voice/circuit-switched data
on both B-channels
-- CLID -- X X
PAlternate
voice/circuit-switched data
on both B-channels
D-channel packet
flexible calling for voice (not
supported by Enterprise
Edge)
Basic D-Channel Packet
additional call offering (not
supported by Enterprise
Edge)
calling line identification
X X X

16
ISDN overview

17
BRIM wiring chart
BRIM wiring chart
The digital BRI ISDN lines are connected to the BRIM through the RJ-45 jacks on the front of the
media bay module. You can connect up to four BRI ISDN lines to the BRIM.
The following diagram and tables apply to S-Loop and T-Loop connections. S-Loop are used to
connect S-Loop devices such as video phones, terminal adapters, and Grp 3 Fax machines. The
T-Loops are used to connect to the CO/PSTN.
Figure 3 BRIM RJ-45 ports
The wiring details for the RJ-45 ports are listed in the table below.
Warning: The BRIM must only be connected to an NT1 provided by the service provider.
The NT1 must provide a Telecommunication Network Voltage (TNV) to Safety Extra Low
Voltage (SELV) barrier.
Table 1 BRIM RJ-45 port wiring
Pin Signal Signal on system side
1No connection No connection
2No connection No connection
3 + Receive (+Rx) +Tx
4 + Transmit (+Tx) +Rx
5 - Transmit (-Tx) -Rx
6 - Receive (-Rx) -Tx
7No connection No connection
8No connection No connection
1 2 3 4 5 6 7 8
RJ-45 pin out
RJ-45 jacks
BRIM

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BRIM wiring chart
Table 2 BRIM line numbering
Port number
Default line numbers on
Expansion port 1
Default line numbers on
Expansion port 2
1 101 – 102 201 – 202
2 103 – 104 203 – 204
3 105 – 106 205 – 206
4 107 – 108 207 – 208