Nortel BCM50 User Manual

Installation and Maintenance Guide

BCM50 2.0

Business Communications Manager

Document Status: Standard

Document Number: NN40020-302

Document Version: 01.02

Date: October 2006

Copyright © 2006 Nortel Networks, All Rights Reserved

All rights reserved.

The information in this document is subject to change without notice. The statements, configurations, technical data, and
recommendations in this document are believed to be accurate and reliable, but are presented without express or implied
warranty. Users must take full responsibility for their applications of any products specified in this document. The
information in this document is proprietary to Nortel Networks.

Trademarks

Nortel, the Nortel logo, and the Globemark are trademarks of Nortel Networks.

Microsoft, MS, MS-DOS, Windows, and Windows NT are trademarks of Microsoft Corporation.

All other trademarks and registered trademarks are the property of their respective owners.

SOFTWARE LICENSE

NORTEL NETWORKS INC. (“NORTEL NETWORKS”) TELECOMMUNICATION PRODUCTS

THIS LEGAL DOCUMENT IS A LICENSE AGREEMENT ("License") BETWEEN YOU, THE END-USER
("CUSTOMER") AND NORTEL NETWORKS. PLEASE READ THIS LICENSE CAREFULLY BEFORE USING
THE SOFTWARE. BY USING THIS SOFTWARE, YOU, THE CUSTOMER, ARE AGREEING TO BE BOUND BY
THE TERMS OF THIS LICENSE. IF YOU DO NOT AGREE TO THE TERMS OF THIS LICENSE, RETURN THE
UNUSED SOFTWARE AND THE ASSOCIATED DOCUMENTATION TO NORTEL NETWORKS THROUGH A
NORTEL NETWORKS AUTHORIZED DISTRIBUTOR WITHIN FIVE (5) DAYS OF YOUR ACQUISITION OF
THE SOFTWARE FOR A REFUND.

3

Subject to the terms hereinafter set forth, NORTEL NETWORKS grants
to CUSTOMER and/or its representatives, with a "need to know," a
personal, non-exclusive license (1) to use the licensed software,
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Expansion beyond the specified usage level may require payment of an
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NORTEL NETWORKS considers the licensed software to contain "trade
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secrets" include, without limitation thereto, the specific design, structure
and logic of individual licensed software programs, their interactions with
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All grants of rights to use intellectual property intended to be
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CUSTOMER warrants to NORTEL NETWORKS that CUSTOMER is
not purchasing the rights granted by this License in anticipation of
reselling those rights.

CUSTOMER shall:

• Hold the licensed software in confidence for the benefit of NORTEL
NETWORKS and/or NORTEL NETWORKS’ suppliers using no
less a degree of care than it uses to protect its own most confidential
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• Keep a current record of the location of each copy of licensed
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• Issue instructions to each of its authorized employees, agents and/or
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• Return the licensed software and all copies through an Authorized
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CUSTOMER chooses to permanently cease using it.

CUSTOMER shall not:

• Use licensed software (i) for any purpose other than CUSTOMER’s
own internal business purposes and (ii) other than as provided by this
License; or

• Allow anyone other than CUSTOMER’s employees, agents and/or
representatives with a "need to know" to have physical access to
licensed software; or

• Make any copies of licensed software except such limited number of
object code copies in machine readable form only, as may be
reasonably necessary for execution or archival purposes only; or

• Make any modifications, enhancements, adaptations, or translations
to or of licensed software, except as may result from those
CUSTOMER interactions with the licensed software associated with
normal use and explained in the associated documentation; or

• Attempt to reverse engineer, disassemble, reverse translate,
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• Make full or partial copies of any documentation or other similar
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unless the same has been supplied in a form by NORTEL
NETWORKS intended for periodic reproduction of partial copies; or

• Export or re-export licensed software and/or associated
documentation by downloading or otherwise from the fifty states of
the United States and the District of Columbia.

• Install and use each copy of licensed software only on a single CPU
at a time (for this purpose, single CPU shall include systems with
redundant processing units); and

PLEASE REFER TO THE NEXT PAGE

Installation and Maintenance Guide

4

Except for Java Product (as defined herein below), CUSTOMER may
assign collectively its rights under this License to any subsequent owner
of the associated hardware, but not otherwise, subject to the payment of
the then current license fee for new users, if any. No such assignment shall
be valid until CUSOMTER (1) has delegated all of its obligations under
this License to the assignee; and (2) has obtained from the assignee an
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specifically allowed shall be void and conclusively presumed a material
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(ii) provides written notice of such claimed material breach to
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CUSTOMER’s receipt of written notice specifying in reasonable detail
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acknowledges that this License may be immediately terminated by
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such termination shall be without prejudice to any other rights and
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EXPRESS LIMITED WARRANTIES FOR ANY ITEM OF LICENSED
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SET FORTH THEREIN, THIS LICENSE DOES NOT CONFER ANY
WARRANTY TO CUSTOMER FROM OR BY NORTEL NETWORKS.

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accordance with the laws of the State of Tennessee. If for any reason a
court of competent jurisdiction finds any provision of this License or
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enforced to the maximum extent permissible so as to effect the intent of
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respect to the use of the licensed software and the associated
documentation, and supersedes all prior or contemporaneous
understandings or agreements, written or oral, regarding such subject
matter. No amendment to or modification of this License will be binding
unless in writing and signed by a duly authorized representative of
NORTEL NETWORKS.

THE LICENSED SOFTWARE IS PROVIDED BY NORTEL
NETWORKS "AS IS" AND WITHOUT WARRANTY OF ANY KIND
OR NATURE, WRITTEN OR ORAL, EXPRESS OR IMPLIED,
INCLUDING (WITHOUT LIMITATION) THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A
PARTICULAR PURPOSE.

THIS LIMITATION OF WARRNATIES WAS A MATERIAL
FACTOR IN THE ESTABLISHMENT OF THE LICENSE FEE
CHARGED FOR EACH SPECIFIC ITEM OF SOFTWARE
LICENSED.

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NETWORKS’ SUPPLIERS AND THEIR DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE TO OR THROUGH
CUSTOMER FOR INCIDENTAL, INDIRECT, SPECIAL,
CONSEQUENTIAL, PUNITIVE, OR EXEMPLARY DAMAGES OF
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OTHER ECONOMIC DAMAGE, AND FURTHER INCLUDING
INJURY TO PROPERTY, AS A RESULT OF USE OR INABILITY TO
USE THE LICENSED SOFTWARE OR BREACH OF ANY
WARRANTY OR OTHER TERM OF THIS LICENSE, REGARDLESS
OF WHETHER NORTEL NETWORKS AND/OR NORTEL
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TO KNOW, OR IN FACT KNEW OF THE POSSIBILITY THEREOF.

Restricted Rights. Use, duplication or disclosure by the United States
government is subject to the restrictions as set forth in the Right in
Technical Data and Computer Software Clauses in DFARS

252.227-7013(c) (1) (ii) and FAR 52.227-19(c) (2) as applicable.

NN40020-302

Task List

Determining DHCP server configuration and IP address . . . . . . . . . . . . . 69

To disable the DHCP server on the BCM50a, BCM50e, BCM50ba,

and BCM50be main units ..............................................................................................71

Installing the main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

To install the rack-mount shelf in an equipment rack ....................................................83

To install the BCM50 unit on the rack-mount shelf ........................................................84

To install a BCM50 unit on top of another unit ..............................................................85

To install the power supply on the rack-mount shelf .....................................................85

To install the patch panel (optional)...............................................................................85

To install the BCM50 wall-mount bracket ......................................................................86

To install the BCM50 unit on the wall-mount bracket ....................................................88

To install the power supply using the BCM50 power supply unit (optional) ..................90

To install the WFC .........................................................................................................90

To install the BCM50 unit on a desktop or shelf ............................................................91

Installing an expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

To set G4x16 or G8x16 dip switches.............................................................................96

To set GASM dip switches ............................................................................................96

To set GATM dip switches.............................................................................................97

To install an MBM..........................................................................................................97

5

Connecting the cables to the BCM50 system . . . . . . . . . . . . . . . . . . . . . . 99

To connect an expansion unit .....................................................................................101

To connect a power supply using a UPS.....................................................................103

To connect a power supply without a UPS..................................................................103

To connect the lines and extensions ...........................................................................106

To connect telephone lines to DTM, BRIM, or 4x16 MBMs.........................................107

To connect analog telephone lines to the GATM4/GATM8 or G4x16/G8x16..............108

To connect extensions to DSM16, DSM32, ASM8, 4x16, G4x16, or G8x16 MBMs ...109

To install an auxiliary ringer.........................................................................................110

To install an external paging system ...........................................................................110

To connect the music source using the music source jack .........................................112

To connect the music source using the RJ-21 telephony connector ...........................112

To connect the cables to the wiring field card (optional) .............................................113

To connect the cables to the patch panel (optional) ....................................................113

Installing telephones and peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

To install the emergency telephone.............................................................................116

Installing the analog terminal adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

To connect the ATA2 ...................................................................................................121

To mount the ATA2 on a wall ......................................................................................121

To measure the insertion loss from the CO to the analog device................................123

To measure the insertion loss from the analog device to the CO................................123

Installation and Maintenance Guide

6 Task List

Using Telset Administration to set the basic parameters . . . . . . . . . . . . 129

To enter the keycodes .................................................................................................130

To configure the IP address ........................................................................................131

To configure the modem..............................................................................................131

To select the region .....................................................................................................132

To select the telephony startup template and start DN ...............................................132

To initialize voice mail..................................................................................................132

To create Telset user accounts ...................................................................................132

Using Element Manager to set the basic parameters . . . . . . . . . . . . . . . 135

To access the BCM50 Web page ................................................................................136

To download and install Element Manager .................................................................136

To connect to the BCM50 system using Element Manager ........................................137

To enter a keycode ......................................................................................................137

To configure the LAN IP address ................................................................................138

To configure the modem..............................................................................................138

To configure the startup template for telephony services ...........................................138

To initialize voice mail..................................................................................................139

To enter a name for your system.................................................................................139

To configure the date and time settings ......................................................................140

To configure DHCP server settings .............................................................................140

To configure IP Phones ...............................................................................................141

To configure SNMP settings ........................................................................................142

To configure SNMP community strings .......................................................................143

To configure the SNMP manager list...........................................................................143

To create user accounts ..............................................................................................143

To configure SRG........................................................................................................144

Using the Startup Profile to configure parameters . . . . . . . . . . . . . . . . . 145

To download the Startup Profile template ...................................................................147

To customize a Startup Profile for your system ..........................................................147

To load the Startup Profile data onto the BCM50 system ...........................................148

Completing the initial installation (optional) . . . . . . . . . . . . . . . . . . . . . . 151

To configure the MBM(s) .............................................................................................152

Connecting the BCM50 system to the LAN and WAN . . . . . . . . . . . . . . . 155

To connect the BCM50 system to the LAN .................................................................157

To connect the BCM50e or BCM50be main units to the WAN ....................................158

To connect the BCM50a or BCM50ba main units to the WAN ....................................158

Testing basic BCM50 functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

To test the main unit ....................................................................................................161

To troubleshoot the main unit ......................................................................................162

To test the expansion unit ...........................................................................................162

To troubleshoot the expansion unit .............................................................................162

To test the MBM ..........................................................................................................163

To test a station MBM..................................................................................................163

To test a trunk MBM ....................................................................................................163

To determine why an MBM does not appear in Element Manager .............................164

To determine why the ATA2 does not function............................................................164

To determine why there is no dial tone at the ATA2....................................................164

NN40020-302

Task List 7

To check the ATA2 wiring............................................................................................165

To perform a Level 1 and Level 2 reset .......................................................................166

Replacing the BCM50 system components . . . . . . . . . . . . . . . . . . . . . . . 169

To shut down the system.............................................................................................170

To return the system to operation................................................................................170

Replacing a power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

To remove the power supply .......................................................................................172

To connect the new power supply ...............................................................................173

Replacing a main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

To disconnect the cables .............................................................................................176

To remove a rack-mounted main unit..........................................................................177

To remove a wall-mounted main unit ..........................................................................177

To remove a desktop mounted main unit ....................................................................177

To connect the cables .................................................................................................178

Replacing a media bay module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

To remove the MBM ....................................................................................................180

To insert the new MBM................................................................................................181

Replacing an expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

To disconnect the expansion unit cables.....................................................................184

To remove a rack-mounted expansion unit .................................................................185

To remove a wall-mounted expansion unit..................................................................185

To remove a desktop-mounted expansion unit ...........................................................185

To remove the MBM ....................................................................................................186

To connect the cables .................................................................................................187

Replacing an internal component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

To open the main unit case .........................................................................................191

To remove the hard disk ..............................................................................................193

To remove the fan .......................................................................................................194

To remove the router card ...........................................................................................195

To insert the new hard disk .........................................................................................196

To insert the new fan ...................................................................................................198

To insert the new router card.......................................................................................199

To close the main unit case .........................................................................................200

Installation and Maintenance Guide

8 Task List

NN40020-302

Contents

Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

North American regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Canadian Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Federal Communications Commission (FCC) Notice . . . . . . . . . . . . . . . . . . . . . . 18

Ringer Equivalence Number (REN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

EMI/EMC (FCC Part 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Important safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Enhanced 911 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Radio-frequency interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Telecommunication registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

International regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Additional safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

ITU standardization compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

9

Chapter 1

Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Symbols and text conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

How to get help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Chapter 2

Introducing the BCM50 hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Main units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

BCM50 Expansion unit and media bay modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Media bay modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

BCM50 hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Rack-mount shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Patch panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Wall-mount bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Power supply mounting bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Wiring field card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

BCM50 components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Power supply adapter cord (international users) . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Installation and Maintenance Guide

10 Contents

Uninterruptable power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Hard disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Cooling fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

RJ-21 telephony connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Router card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Field-replaceable units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Telephones and adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Chapter 3

Viewing the BCM50 system LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

System status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

LAN port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

ADSL router LEDs (BCM50a and BCM50ba only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Ethernet router LEDs (BCM50e and BCM50be only) . . . . . . . . . . . . . . . . . . . . . . . . . 65

BRI port LEDs on main unit (BRI series only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Media bay module LEDs (expansion units only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

DTM LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

BRIM LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Chapter 4

Determining DHCP server configuration and IP address. . . . . . . . . . . . . . 69

BCM50 and BCM50b main units (no integrated router) . . . . . . . . . . . . . . . . . . . . . . . 69

If an external DHCP server is not present . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

If an external DHCP server is present . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

BCM50a, BCM50ba, BCM50e, and BCM50be main units

(with integrated router) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Chapter 5

Installing the BCM50 system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Chapter 6

Checking the installation prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Environmental requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Electrical requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Site telephony wiring requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Digital loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Analog loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

System equipment, supplies, and tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Basic hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Optional equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Other hardware and tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

NN40020-302

Contents 11

Chapter 7

Installing the main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Unpacking the main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Installing the BCM50 unit in an equipment rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Installing the BCM50 unit on the rack-mount shelf . . . . . . . . . . . . . . . . . . . . . . . . 83

Installing the BCM50 unit on the wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Installing the wiring field card (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Installing the BCM50 unit on a desktop or shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Next step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Chapter 8

Installing an expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Unpacking the expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Verifying the media bay module switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Installing a media bay module in an expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Installing the expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Next step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Chapter 9

Connecting the cables to the BCM50 system . . . . . . . . . . . . . . . . . . . . . . . 99

Connecting the expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Connecting the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Connecting the lines and extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Wiring warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Connecting lines and extensions to the RJ-21 telephony connector . . . . . . . . . 106

Connecting telephone lines to the expansion units . . . . . . . . . . . . . . . . . . . . . . . 107

Connecting extensions to the expansion units . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Connecting the auxiliary equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Connecting an auxiliary ringer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Connecting an external paging system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Connecting an external music source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Next step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Chapter 10

Installing telephones and peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

System telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Analog terminal adapter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Central Answering Position (CAP/eCAP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Installing an emergency telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Installing IP phones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Installing T7406 cordless systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Installation and Maintenance Guide

12 Contents

Chapter 11

Installing the analog terminal adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Configuration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Analog telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Analog data device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Installing the ATA2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Connecting the ATA2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Mounting the ATA2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Test insertion loss measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Configuring the ATA2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Chapter 12

Configuring the BCM50 system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Initial parameters overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Startup parameters overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Chapter 13

Using Telset Administration to set the basic parameters . . . . . . . . . . . . 129

Configuring the initial parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Next step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Chapter 14

Using Element Manager to set the basic parameters. . . . . . . . . . . . . . . . 135

Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Accessing the BCM50 system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Configuring the initial parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Configuring the startup parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Next step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Chapter 15

Using the Startup Profile to configure parameters. . . . . . . . . . . . . . . . . . 145

Startup Profile requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Configuring basic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Next step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Chapter 16

Completing the initial installation (optional) . . . . . . . . . . . . . . . . . . . . . . . 151

Configuring the media bay module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Configuring modem settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Checking for software updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Configuring voice mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Customizing security policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Performing a backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

NN40020-302

Contents 13

Chapter 17

Connecting the BCM50 system to the LAN and WAN . . . . . . . . . . . . . . . 155

Connecting the BCM50 system to the LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Connecting the BCM50 system to the WAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Next step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Chapter 18

Testing basic BCM50 functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Reset to factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Reset levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Activate the reset feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Chapter 19

Replacing the BCM50 system components. . . . . . . . . . . . . . . . . . . . . . . . 169

Preparing the system for maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Restarting the system after maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Chapter 20

Replacing a power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Preparing the system for maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Removing the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Connect the new power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Chapter 21

Replacing a main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Preparing the system for maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Removing the main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Installing the new main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Chapter 22

Replacing a media bay module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Chapter 23

Replacing an expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Disconnecting the cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Removing the expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Removing the MBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Inserting the MBM in the new expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Installing the new expansion unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Chapter 24

Replacing an internal component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Special tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Preparing the system for maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Installation and Maintenance Guide

14 Contents

Removing the main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Opening the main unit case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Removing an internal component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Inserting the new component . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Closing the main unit case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

Installing the main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Connecting the cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Appendix A

RJ-21 telephony connector wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Appendix B

BRI wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Appendix C

LAN ports wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Appendix D

WAN ports wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

Appendix E

Expansion ports wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

Appendix F

DTM wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Appendix G

BRIM wiring chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

Appendix H

ADID wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Appendix I

GATM wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Appendix J

4x16 wiring charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Appendix K

G4x16 and G8x16 wiring charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

Appendix L

DSM16 and DSM32 wiring charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

Appendix M

ASM8, ASM8+, and GASM wiring chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

NN40020-302

Contents 15

Appendix N

Market profile attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Interface availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Analog interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Digital interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Tones and cadences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

Core parameters for market profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Analog Trunk parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

GASM8 parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

GASI parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

ATA2 parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268

ATA2 DR6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268

ATA2 DR7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

ISDN line services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

Analog and digital trunk types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

Installation and Maintenance Guide

16 Contents

NN40020-302

Regulatory information

For regulatory information about the BCM50 system:

• “North American regulatory information”

• “International regulatory information” on page 22

North American regulatory information

This Class A device complies with Part 68 and Part 15 of the FCC Rules and ICES-003 Class A
Canadian EMI requirements. Operation is subject to the following two conditions (1) This device
may not cause harmful interference and (2) this device must accept any interference received,
including interference that may cause undesired operation.

Repairs to certified equipment should be coordinated by a representative 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.

17

Caution: Users should not attempt to make such connections themselves, but

should contact the appropriate electric inspection authority, or electrician, as
appropriate.

Do not attempt to repair this equipment. If you experience trouble, write for warranty and repair
information:

USA Canada

Nortel
640 Massman Drive
Nashville, TN, USA
37210

Nortel Repair Service Centre 30
30 Norelco Drive
Weston Ontario, Canada
M9L 2X6

For warranty and repair service outside the USA or Canada, please contact your distributor.

Canadian Notice

The Industry Canada designation identifies certified equipment. This certification means that the
equipment meets telecommunications network protective, operational and safety requirements as
prescribed in the appropriate Terminal Equipment Technical Requirements document(s). The
Department does not guarantee the equipment will operate to the user's satisfaction.

Installation and Maintenance Guide

18 Regulatory information

Federal Communications Commission (FCC) Notice

FCC registration number: This telephone equipment complies with Part 68, Rules and
Regulations, of the FCC for connection to the Public Switched Telephone Network.

Your connection to the Public Switched Telephone Network must comply with these FCC rules:

• 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 preceding conditions may not prevent degradation of service in some situations. See

installation instructions for details.

• Use only an FCC Part 68-compliant Universal Service Order Code (USOC) network interface

jack, as specified in the installation instructions, to connect to the Public Switched Telephone

Network.

• If the equipment causes harm to the telephone network, the telephone company will notify you

in advance that temporary discontinuance of the product may be required. But if advance

notice isn’t practical, the telephone company will notify you as soon as possible. You will also

be advised of your right to file a complaint with the FCC, if you believe it is necessary.

Ringer Equivalence Number (REN)

The REN 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 the sum of the RENs of all the devices does not exceed 5.

EMI/EMC (FCC Part 15)

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 in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

• Consult the dealer or an experienced radio/TV technician for help.

Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.

NN40020-302

Regulatory information 19

Important safety instructions

The following safety instructions cover the installation and use of the Product. Read carefully and
retain for future reference.

Installation

Warning: To avoid electrical shock hazard to personnel or equipment damage

observe the following precautions 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 installing or modifying 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.

Use

When using your telephone equipment, basic safety precautions should always be followed to
reduce risk of fire, electric shock and injury to persons, including the following:

1 Read and understand all instructions.

2 Follow the instructions marked on the product.

3 Unplug this product (or host equipment) from the wall outlet before cleaning. Do not use

liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

4 Do not use this product near water, for example, near a bath tub, wash bowl, kitchen sink, or

laundry tub, in a wet basement, or near a swimming pool.

5 Do not place this product on an unstable cart, stand or table. The product may fall, causing

serious damage to the product.

6 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.

7 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.

8 Do not overload wall outlets and extension cords as this can result in the risk of fire or electric

shock.

9 Never spill liquid of any kind on the product.

10 To reduce the risk of electric shock do not disassemble this product, but send it to a qualified

service person when some service or repair work is required.

Installation and Maintenance Guide

20 Regulatory information

11 Unplug this product (or host equipment) 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 it 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.

Caution: To eliminate the possibility of accidental damage to cords, plugs, jacks,

and the telephone, do not use sharp instruments during the assembly procedures.

Warning: 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.

12 Save these instructions.

Use of a music source

In accordance with U.S. Copyright Law, a license may be required from the American Society of
Composers, Authors and Publishers, or similar organization if Radio or TV broadcasts are
transmitted through the Music On Hold or Background Music features of this telecommunication
system.

Nortel hereby disclaims any liability arising out of the failure to obtain such a license.

Safety

Business Communications Manager 50 (BCM50) equipment meets all applicable requirements of
both the CSA C22.2 No.60950 and UL 60950 Edition 3.

Danger: Risk of shock.
Read and follow installation instructions carefully.
Ensure the BCM50 is not powered and that all telephone/data cables are removed prior to
opening the BCM50 unit in the field.
If installation of additional hardware and /or servicing is required, disconnect all telephone
cable connections prior to unplugging the BCM50 modules.
Ensure the BCM50 is connected to a wall outlet with a third-wire protective earth
connection prior to connecting any telecommunications cables to the BCM50 main unit or
expansion units.

NN40020-302

Caution: Only qualified persons should service the 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 BCM50 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 through the power
cord. Therefore, it is mandatory that connection to an earthed outlet is performed first and
removed last when cabling to the unit. Specifically, operations requiring the unit to be
powered down must have the network connections (central office lines) removed first.

Enhanced 911 configuration

Warning:

Local, state and federal requirements for Emergency 911 services support by Customer
Premises Equipment vary. Consult your telecommunication service provider regarding
compliance with applicable laws and regulations.

Regulatory information 21

Radio-frequency interference

Warning: Equipment generates RF energy.

This equipment generates, uses, and can radiate radio-frequency energy. If not installed
and used in accordance with the installation manual, it may cause interference to radio
communications. It has been tested and found to comply with the limits for a Class A
computing device pursuant to Part 15 of the FCC Rules and with ICES.003, CLASS A
Canadian EMI Requirements. Operation of this equipment in a residential area is likely to
cause interference, in which case the user, at his or her own expense, will be required to
take whatever measures may be required to correct the interference.

Telecommunication registration

BCM50 equipment meets all applicable requirements of both Industry Canada CS-03 and US
Federal Communications 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 BCM50 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.

Installation and Maintenance Guide

22 Regulatory information

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
preceding 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.

Caution: Users should not attempt to make such connections themselves, but should
contact the appropriate electric inspection authority, or electrician.

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.

Hereby, Nortel declares that BCM50 units, with Model No. NT9T61XX, NT9T62XX,
NT9T64XX, and NT9T65XX, are in compliance with the essential requirements and other
relevant provisions of Directive 1999/5/EC.

Information is subject to change without notice. Nortel 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
preceding warning is inserted for regulatory reasons. If any customer believes that they
have an interference problem, either because their Nortel 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.

NN40020-302

Safety

Regulatory information 23

Warning:

Only qualified service personnel may install this equipment. The instructions in this
manual are intended for use by qualified service personnel only.

Warning: Risk of shock.

Ensure the BCM50 is unplugged from the power socket and that any telephone or
network cables are unplugged before opening the BCM50.

Read and follow installation instructions carefully

Warning: Only qualified persons should service the 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
BCM50 system must be connected to an outlet with a third-wire Earth.

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 through the power cord.
Therefore, it is mandatory that connection to an earthed outlet is performed first and
removed last when cabling to the unit. Specifically, operations requiring the unit to be
powered down must have the network connections (exchange lines) removed first.

Additional safety information

The following interfaces (TNV) can be connected to the Public Switched Telephone Network in
accordance with Nortel and the local carriers installation requirements:

• BCM50, CSC GATi Ports integrated (Loop Start)

• BCM50, CSC ADSL Port option

• Expansion Unit, Digital Trunk Module (T1/E1/ISDN)

• Expansion Unit, Global Analog Trunk Module 4 and 8 Port (Loop Start)

• Expansion Unit, CTM4/8 (Loop Start)

• Expansion Unit, 4x16 (Loop Start)

• Expansion Unit, G4x16, G8x16 (Loop Start)

Installation and Maintenance Guide

24 Regulatory information

• Expansion Unit, BRIM (ST configuration)

• Expansion Unit, ADID (Direct Inward Dial)

The following interfaces are designated as Safety Extra Low Voltage (SELV) and cannot be
connected to unprotected plant wiring.

• BCM50, CSC Page Port

• BCM50, CSC Auxiliary Ringer Port

• BCM50, CSC Music On-Hold Port.

• BCM50, CSC Relay Port

• BCM50, CSC USB Port

• BCM50, CSC Ethernet Port including optional Ethernet Hub Ports

ITU standardization compliance

The following list provides voice/data applications and telephony support for BCM50 2.0:

• G.711 and G.729AB codecs

• V.27ter, V.29, and V.17 data modem modulation supported (T.38 fax control gateway)

•G3 fax

• T512.1 (Type 1 Receiver DTMF)

•G.168

•H.323

•Q.931

NN40020-302

Chapter 1

Getting started

About this guide

The Installation and Maintenance Guide describes how to install, configure, and maintain the
Business Communications Manager 50 (BCM50) 2.0 systems.

The concepts, operations, and tasks described in this guide relate to the hardware of the BCM50
system. This guide provides task-based information about installing the hardware components and
performing basic configuration tasks.

Use Nortel Business Element Manager, Startup Profile, and Telset Administration to configure
various BCM50 parameters.

In brief, the information in this guide explains:

• installing hardware components

• starting and initializing the system

• replacing components

• testing the system

25

Audience

The Installation and Maintenance Guide is directed to installers who install, configure, and
maintain BCM50 2.0 systems.

To use this guide, you must:

• be an authorized BCM50 2.0 installer or administrator within your organization

• know basic Nortel BCM50 terminology

• be knowledgeable about telephony and IP networking technology

Acronyms

The following is a list of acronyms used in this guide.

Table 1 Acronyms (Sheet 1 of 3)

Acronym Description

ACU Audio conference unit

AIS Alarm indication system

APC American Power Conversion

Installation and Maintenance Guide

26 Chapter 1 Getting started

Table 1 Acronyms (Sheet 2 of 3)

Acronym Description

ASM Analog station module (analog station media bay module)

ATA Analog terminal adapter

BCM Business Communications Manager

BRI Basic rate interface

BRI CNIC Basic rate interface compact network interface card

BRIM Basic rate interface module (basic rate interface media bay module)

CAP Central answering position

CFA Carrier failure alarm

CLID Calling line identification

CNIC Compact network interface card

CO Central office

CSU Channel service unit

CTM Caller ID trunk module (caller ID trunk media bay module)

DDIM Digital drop and insert MUX

DECT Digital enhanced cordless telecommunications

DHCP Dynamic host configuration protocol

DIMM Dual in-line memory module

DMC Digital mobility controller

DSM Digital station module (digital station media bay module)

DSP Digital signal processor

DSU Data service unit

DTE Data terminal equipment

DTM Digital trunk module (digital trunk media bay module)

FEM Fiber expansion module

FRU Field replaceable unit

GASM Global analog station module (global analog station media bay module)

GATM Global analog trunk module (global analog trunk media bay module)

KEM Key expansion module

KIM Key indicator module

KRS Keycode retrieval system (Nortel keycode retrieval system)

LAN Local area network

LIU Line isolation unit

MBM Media bay module

MSC Media services card

MWI Message waiting indication

NIC Network interface card

ONS on-premise station

NN40020-302

Table 1 Acronyms (Sheet 3 of 3)

Acronym Description

OSI Open switch interval

PCI Peripheral component interface

PEC Processor expansion card

PSTN Public switched telephone network

PSU Power supply unit

QoS Quality of service

RAI Remote alarm indication

RAID Redundant array of independent disks

REN Ringer equivalence number

RFO Redundant feature option

RMS Root mean square

RPS Redundant power supply

SAPS Station auxiliary power supply

SELV Safety extra low voltage

SSD System status display

UPS Uninterruptable power supply

USB Universal serial bus

VMWI Visual message waiting indicator

VoIP Voice over Internet protocol

WAN Wide area network

Chapter 1 Getting started 27

Symbols and text conventions

These symbols highlight critical information for the BCM50 2.0 system.

Caution: Alerts you to conditions where you can damage the equipment.

Danger: Alerts you to conditions where you can get an electrical shock.

Warning: Alerts you to conditions where you can cause the system to fail or work

improperly.

Installation and Maintenance Guide

28 Chapter 1 Getting started

Note: Alerts you to important information.

Tip: Alerts you to additional information that can help you perform a task.

Security Note: Indicates a point of system security where you can change a

default, or where the administrator must decide on the level of security required

!

for the system.

Warning: Alerts you to ground yourself with an antistatic grounding strap
before performing the maintenance procedure.

Warning: Alerts you to remove the BCM50 main unit and expansion unit
power cords from the AC outlet before performing any maintenance
procedure.

These conventions and symbols represent the Business Series Terminal display and dialpad.

Convention Example Used for

Word in a special font (shown in
the top line of the display)

Underlined word in capital letters
(shown in the bottom line of a
two-line display telephone)

Dialpad buttons

Pswd:

PLAY

£

Command line prompts on display telephones.

Display options on two-line display telephones.
Press the button directly below the option on the
display to proceed.

Buttons you press on the dialpad to select a
particular option.

These text conventions are used in this guide to indicate the information described:

Convention Description

bold Courier
text

Indicates command names, options, and text that you must enter.
Example: Use the
Example: Enter

info command.

show ip {alerts|routes}.

italic text Indicates book titles.

NN40020-302

Convention Description

Chapter 1 Getting started 29

plain Courier
text

FEATURE
HOLD
RELEASE

Related publications

This section provides a list of additional documents referred to in this guide. Two publication
types are available: Technical Documents on page 29 and User Guides on page 30.

Technical Documents

System Installation

BCM50 1.0 to BCM50 2.0 Upgrade Guide (NN40020-401)

Installation Checklist and Quick Start Guide (NN40020-308)

Keycode Installation Guide (NN40010-301)

Indicates command syntax and system output (for example, prompts
and system messages).

Example:

Indicates that you press the button with the corresponding icon on the
telephone you are using.

Set Trap Monitor Filters

R2MFC Media Bay Module Installation and Configuration Guide (NN40010-300)

System Programming

Administration Guide (NN40020-600)

Device Configuration Guide (NN40020-300)

Networking Configuration Guide (NN40020-603)

Telset Administration Guide (NN40020-604)

Telephones and Peripherals

Telephony Device Installation Guide (NN40020-309)

Digital Mobility

DECT Deployment and Demonstration Tool

Digital Mobility System Installation and Configuration Guide (NN40010-302)

T7406 Cordless Handset Installation Guide (NN40110-300)

Installation and Maintenance Guide

30 Chapter 1 Getting started

IP Telephony

WLAN IP Telephony Installation and Configuration Guide (NN40050-301)

Call Pilot

CallPilot Manager Set Up and Operation Guide (NN40090-300)

CallPilot Telephone Administration Guide (NN40090-500)

User Guides

There are no references to specific user guides.

How to get help

This section explains how to get help for Nortel products and services.

Getting Help from the Nortel Web site

The best way to get technical support for Nortel products is from the Nortel Technical Support
Web site:

www.nortel.com/support

This site provides quick access to software, documentation, bulletins, and tools to address issues
with Nortel products. More specifically, the site enables you to:

• download software, documentation, and product bulletins

• search the Technical Support Web site and the Nortel Knowledge Base for answers to
technical issues

• sign up for automatic notification of new software and documentation for Nortel equipment

• open and manage technical support cases

Getting Help over the phone from a Nortel Solutions Center

If you don’t find the information you require on the Nortel Technical Support Web site, and have a
Nortel support contract, you can also get help over the phone from a Nortel Solutions Center.

In North America, call 1-800-4NORTEL (1-800-466-7835).

Outside North America, go to the following Web site to obtain the phone number for your region:

www.nortel.com/callus

Getting Help from a specialist by using an Express Routing Code

To access some Nortel Technical Solutions Centers, you can use an Express Routing Code (ERC)
to quickly route your call to a specialist in your Nortel product or service. To locate the ERC for
your product or service, go to:

www.nortel.com/erc

NN40020-302

Chapter 1 Getting started 31

Getting Help through a Nortel distributor or reseller

If you purchased a service contract for your Nortel product from a distributor or authorized
reseller, contact the technical support staff for that distributor or reseller.

Installation and Maintenance Guide

32 Chapter 1 Getting started

NN40020-302

Chapter 2

Introducing the BCM50 hardware

The Business Communications Manager 50 Release 2.0 (BCM50 2.0) provides private network
and telephony management capability to small- and medium-sized businesses.

The BCM50 system:

• integrates voice and data capabilities, IP Telephony gateway functions, and data-routing
features into a single telephony system

• provides telephony applications for use in a business environment

For information about the BCM50 hardware components:

• Main units on page 33

• BCM50 Expansion unit and media bay modules on page 38

• BCM50 hardware on page 48

• BCM50 components on page 50

• Field-replaceable units on page 55

• Telephones and adapters on page 56

33

Main units

The primary hardware component in the BCM50 2.0 system is the main unit. The six BCM50
main units are divided into two series: standard and basic rate interface (BRI). The BRI (or b)
series main units include BRI ports that replace the four analog lines (on the RJ-21 telephony
connector) on the standard series.

• Standard series

— BCM50 main unit (with Telephony only)

Note: The generic term “main unit,” used throughout this document, refers to any of the
six main units (BCM50, BCM50a, BCM50e, BCM50b, BCM50ba, and BCM50be)
available for a BCM50 system.
To indicate features specific to a particular variation of main unit, that variation of main
unit is clearly identified (for example, BCM50ba).

The BCM50 main unit provides call processing and simple data networking functions. It
provides connections for 12 digital telephones, 4 (PSTN) lines, 4 analog station ports, and
4 connections for auxiliary equipment (auxiliary ringer, page relay, page output, and music
source). The BCM50 main unit has no router, but it has 4 LAN ports: one is the OAM port
for technicians, and the other three are for basic LAN connectivity. See the figure BCM50

main unit ports and connectors on page 35.

Installation and Maintenance Guide

34 Chapter 2 Introducing the BCM50 hardware

— BCM50a main unit (with ADSL router)

The BCM50a main unit provides all the same core functionality as the BCM50 main unit,
and it has an integrated ADSL router for advanced data applications. For detailed
configuration information, see the BCM50a Integrated Router Configuration Guide. See
the figure BCM50a main unit ports and connectors on page 35.

— BCM50e main unit (with Ethernet router)

The BCM50e main unit provides all the same core functionality as the BCM50 main unit,
and it has an integrated Ethernet router for advanced data applications. For detailed
configuration information, see the BCM50e Integrated Router Configuration Guide. See
the figure BCM50e main unit ports and connectors on page 35.

• BRI series (b series)—available only in EMEA and APAC regions

— BCM50b main unit

The BCM50b main unit provides similar functionality to the BCM50 main unit. The
difference is that the BCM50b main unit has two integrated BRI ports replacing the four
analog lines on the RJ-21 telephony connector. See the figure BCM50b main unit ports

and connectors on page 36.

— BCM50ba main unit (with ADSL router)

The BCM50ba main unit provides similar functionality to the BCM50a main unit. The
difference is that the BCM50ba main unit has two integrated BRI ports replacing the four
analog lines on the RJ-21 telephony connector. For detailed configuration information, see
the BCM50a Integrated Router Configuration Guide. See the figure BCM50ba main unit

ports and connectors on page 36.

— BCM50be main unit (with Ethernet router)

The BCM50be main unit provides similar functionality to the BCM50e main unit. The
difference is that the BCM50be main unit has two integrated BRI ports replacing the four
analog lines on the RJ-21 telephony connector. For detailed configuration information, see
the BCM50e Integrated Router Configuration Guide. See the figure BCM50be main unit

ports and connectors on page 36.

For descriptions of the main unit ports and connectors, see the table Main unit ports/connectors

and descriptions on page 37.

A main unit contains the following field-replaceable units:

• 1 programmed hard disk

• 1 cooling fan

• 1 router card (BCM50a and BCM50e only)

NN40020-302

Figure 1 BCM50 main unit ports and connectors

Chapter 2 Introducing the BCM50 hardware 35

OAM
(port 0)

Retention clip
mounting hole

Power

LAN
(port 1)

Figure 2 BCM50a main unit

Retention clip
mounting hole

Expansion/LAN
(port 2, port 3)

Music
source

Reset
switch

ports and connectors

WAN Additional LAN

USB

RJ-21 telephony
connector

Power

OAM
(port 0)

LAN
(port 1)

Expansion/ LAN
(port 2, port 3)

Figure 3 BCM50e main unit ports and connectors

WAN Additional LAN

Retention clip
mounting hole

Power

OAM
(port 0)

LAN
(port 1)

Expansion/ LAN
(port 2, port 3)

Reset
switch

Reset
switch

Music
source

Music
source

USB

USB

RJ-21 telephony
connector

RJ-21 telephony
connector

Installation and Maintenance Guide

36 Chapter 2 Introducing the BCM50 hardware

Figure 4 BCM50b main unit ports and connectors

OAM
(port 0)

Retention clip
mounting hole

Power

LAN
(port 1)

Figure 5 BCM50ba main unit

Retention clip
mounting hole

Expansion/LAN
(port 2, port 3)

Music
source

Reset
switch

ports and connectors

WAN Additional LAN

USB

BRI ports

RJ-21 telephony
connector

BRI ports

Power

OAM
(port 0)

Figure 6 BCM50be main unit ports and connectors

Retention clip
mounting hole

Power

OAM
(port 0)

LAN
(port 1)

LAN
(port 1)

Expansion/ LAN
(port 2, port 3)

WAN Additional LAN

Expansion/ LAN
(port 2, port 3)

Reset
switch

Reset
switch

Music
source

BRI ports

Music
source

USB

USB

RJ-21 telephony
connector

RJ-21 telephony
connector

NN40020-302

Chapter 2 Introducing the BCM50 hardware 37

Table 1 Main unit ports/connectors and descriptions

Port/connector Description

Power connector A barrel connector jack used to connect the power supply to the main unit.

Retention clip mounting hole A small hole into which you insert the retention clip. The retention clip secures the

OAM port (port 0) An RJ-45 jack used to connect a computer running administration software, such as

LAN port (port 1) An RJ-45 jack used to connect the customer LAN to the main unit.

Expansion/LAN ports (ports 2
and 3)

WAN por t
(BCM50a and BCM50e only).

Additional LAN ports
(BCM50a and BCM50e only).

BRI ports
(BCM50b series only).

Reset switch A button to activate the reset feature. Use a long thin tool to press the button.

Music source port A phono jack used to connect a music source to the main unit. If you use this port, the

USB port A USB 1.1-compatible port used to connect a USB storage device or the data

RJ-21 telephony connector An RJ-21 port used to connect telephony devices to the main unit.

power connector to the unit.

Element Manager, to the main unit.

Two RJ-45 jacks used to connect the expansion units to the main unit. The expansion
ports can also provide connections to the Ethernet switch internal to the main unit. If
the BCM50 system has no expansion units connected to these ports, you can use the
expansion/LAN ports to connect additional devices to the LAN.

Note: Activate the feature for the expansion ports by selecting this feature when you
generate your keycode. If you purchase only one expansion port feature, the
expansion port on the left (port 2) is active.

For BCM50a: An RJ-11 jack used to connect the BCM50a main unit to the ADSL line
provided by your Internet service provider (ISP).

For BCM50e: An RJ-45 jack used to connect the BCM50e to the Ethernet port of a
WAN edge device (for example, an external ADSL modem or cable modem).

Note: This port is not available on the BCM50 main unit.

Four RJ-45 jacks that provide connections to the Ethernet switch in the BCM50a and
BCM50e main units. You can use these ports to connect additional devices to the
LAN.

Note 1: These ports are not available on the BCM50 main unit.
Note 2: The BCM50 Release 1 hardware has three additional LAN (RJ-45) ports.

Two RJ-45 jacks that provide connections for BRI trunks from the Public Switched
Telephone Network (PSTN).

On the BCM50b series main units, the four analog lines on the RJ-21 telephony
connector are not available.

Note: The BRI ports feature is activated by selecting this feature when you generate
your keycode. If you do not purchase this feature, the BRI ports are unavailable.

Warning: The reset feature erases programming information; use the feature with
care.

music source connections on the RJ-21 telephony connector are disabled.

interface for an uninterruptable power supply (UPS) to the main unit. The main unit
uses the data interface for the UPS to monitor and control the UPS functions. To
connect both a USB storage device and a UPS data interface, an industry-standard
USB hub (USB 1.1-compatible) is required.

Note: You must format the USB storage device for the FAT32 file system. If necessary,
reformat the USB storage device by plugging it into a USB port on your computer,
right-clicking the USB device icon, and selecting FAT32 reformatting. This destroys
any data on the USB.

The four analog lines on the RJ-21 telephony connector are available only with the
Standard series main units. The BRI series main units include onboard BRI ports
instead of the analog lines.

Installation and Maintenance Guide

38 Chapter 2 Introducing the BCM50 hardware

Warning: External equipment connected to the auxiliary ringer, page relay, page

output, and music-on-hold interfaces must use safety extra low voltage (SELV).
All four interfaces are SELV, and the external equipment connected to these
interfaces must be SELV. If these interfaces are not SELV, you must use external
line isolation units (LIU).

BCM50 Expansion unit and media bay modules

In addition to a main unit, the BCM50 2.0 system can have up to two BCM50 expansion units. An
expansion unit connects to the main unit and provides additional functionality. For expansion unit
port locations and descriptions, see the figure BCM50 expansion unit connections on page 38 and
the table BCM50 expansion unit ports, connectors, and descriptions on page 38.

The BCM50 expansion unit accommodates one media bay module (MBM) that connects
additional telephony equipment to the BCM50 2.0 system. The MBMs connect with external
devices to implement various types of voice trunks and stations. For a list of trunk and station
MBMs that can be used with your BCM50 2.0 system, see the table Trunk MBMs on page 41 and
the table Station MBMs on page 43. For a complete list of MBMs with links to additional
information, see also the table Media bay modules on page 55.

Ensure that the MBM dip switches are set correctly (see Verifying the media bay module switch

settings on page 94).

Figure 7 BCM50 expansion unit connections

LAN port

Retention clip
mounting hole

MBM bay

Table 2 BCM50 expansion unit ports, connectors, and descriptions (Sheet 1 of 2)

Port/connector Description

LAN port (port 1) An RJ-45 jack used to connect the customer LAN to the main unit.

The LAN port on the expansion unit connects to the internal Ethernet switch on the
main unit. You can use the expansion unit LAN port to connect an additional device to
the LAN.

Power connector A barrel connector jack used to connect the power supply to the expansion unit.

Ejector Expansion

port

Power

NN40020-302

Chapter 2 Introducing the BCM50 hardware 39

Table 2 BCM50 expansion unit ports, connectors, and descriptions (Sheet 2 of 2)

Port/connector Description

Retention clip mounting hole A small hole into which you insert the retention clip. The retention clip secures the

power connector to the expansion unit.

Expansion port An RJ-45 jack used to connect the expansion unit to the main unit.

Ejector The ejector is used to remove the media bay module from the expansion unit.

MBM bay A slot into which you install an MBM.

To connect an MBM to the BCM50 2.0 system, you must install the MBM in the expansion unit,
and then connect the expansion unit to the main unit. See Installing an expansion unit on page 93
for more information about installing an expansion unit.

Warning: Make sure you disconnect the power supply to the expansion unit
before inserting or removing an MBM.

The supplied Ethernet cable (shielded) connects the expansion port on the expansion unit to one of
the two expansion ports on the main unit. See the figure Expansion unit and expansion connectors
on page 39. Expansion unit 1 maps to buses 5/6 (port2), while expansion unit 2 maps to buses 7/8
(port 3).

Figure 8 Expansion unit and expansion connectors

Expansion unit 1 Main unit Expansion unit 2

Buses 5/6

Buses 7/8

The LAN port on the expansion unit is connected to the internal Ethernet switch on the main unit.
You can use the expansion unit LAN port to connect an additional device to the LAN.

Note: When you plug an expansion unit into the correct port on the main unit, the
LEDs on the expansion unit port light, while the LEDs on the main unit port turn
off.

Installation and Maintenance Guide

40 Chapter 2 Introducing the BCM50 hardware

Note: When generating your keycode, you must select the feature for the

expansion ports you require. If your keycode contains the feature for one
expansion port only, the expansion port on the left (port 2) is active.

Media bay modules

The media bay modules (MBM) connect with external devices to implement various types of voice
trunks and extensions. You can install one MBM in an expansion unit and you can connect up to
two expansion units to the BCM50 2.0 system.

Note: To determine which media bay modules and which types of trunk lines are
available in your location, see Interface availability on page 239.

The back of the MBM has a single connector that provides signaling channels, media channels,
and power to the MBM. This connector plugs into the MBM backplane in the expansion unit.
Some MBMs also have a cooling fan that operates using the MBM power source. The figure

Media bay module connectors (rear view) on page 40 shows the rear views of the two types of

MBMs.

Figure 9 Media bay module connectors (rear view)

Signaling, media, and
power connector

Signaling, media, and
power connector

Cooling fan

NN40020-302

Chapter 2 Introducing the BCM50 hardware 41

Trunk media bay modules

Trunk media bay modules connect telecommunications lines to the BCM50 2.0 system.

The table Trunk MBMs on page 41 lists the types of trunk media bay modules that are available
for the BCM50 2.0 system.

Table 3 Tru n k M B M s

Module type Function Special notes

DTM
(see Digital trunk media bay

module on page 41)

BRIM
(see Basic rate interface media

bay module on page 42)

GATM4/GATM8
(see Global Analog Trunk Module

on page 42)

ADID4/ADID8
(see Analog direct inward dialing

media bay module on page 43)

Note: See Market profile attributes on page 239 for supported regions.

Connects digital public switched
telephone lines to the BCM50 2.0
system.

Connects a maximum of four ISDN BRI
S/T interfaces.

Connects either four (GATM4) or eight
(GATM8) analog public switched
telephone lines to the BCM50 2.0
system.

Connects either four (ADID4) or eight
(ADID8) analog DID interfaces.

Digital trunk media bay module

The digital trunk media bay module (DTM) connects to standard digital PSTN T1/fT1, E1/fE1, or
PRI ISDN line using either a digital or PRI line. The DTM also supports DASS2, DPN22, Q.SIG,
and MCDN over ISDN:

• On North American BCM50 systems, the DTM connects a T1 or PRI circuit to the BCM50;
T1 circuits provide 24 digital channels to the PSTN and PRI circuits provide 23 digital
channels to the PSTN.

• On International BCM50 systems, the DTM connects to a ETSI ISDN (E1) or PRI (EI) circuit
to a BCM50, providing a maximum of 30 digital channels to the PSTN.

Can connect to one of four types of
lines: TI, North American PRI, ETSI
ISDN (E1), and European PRI (E1).

—

—

—

The front bezel of the DTM has an RJ-48C connector that connects the DTM to the service
provider connection point. The faceplate also has a set of monitor jacks you can use to monitor the
span.

Six additional LEDs are on the front of the DTM. For information about these additional LEDs,
see DTM LEDs on page 67.

The figure DTM faceplate on page 42 shows the DTM module interfaces.

Installation and Maintenance Guide

42 Chapter 2 Introducing the BCM50 hardware

Figure 10 DTM faceplate

Basic rate interface media bay module

The basic rate interface media bay module (BRIM) connects a maximum of four BRI ISDN loops
to the BCM50 system. The BRIM recognizes only the T-interface used in European networks. To
use the BRIM with the U-interface, typical in North American networks, you require an external
NT1 box to convert the U-interface to a T-interface.

Each BRI ISDN loop you connect adds two telephone lines to the BCM50 system. Therefore, each
BRIM adds a maximum of eight lines to the BCM50 system through the four RJ-48C jacks on the
faceplate. The LEDs beside each RJ-48C jack are on when the ISDN line is active. The figure

BRIM faceplate on page 42 shows the BRIM faceplate LEDs and connections.

Monitor jacks RJ-48C digital

telephone line
connector

Figure 11 BRIM faceplate

Global Analog Trunk Module

The Global Analog Trunk Module (GATM) provides an interface for four or eight analog public
switched telephone network lines. This module supports both pulse and tone dialing, as well as
Caller ID and Disconnect Supervision in selected markets throughout the world.

The GATM uses an RJ-21 connector as the trunk interface. The figure GATM faceplate on page
43 shows the GATM faceplate LEDs and RJ-21 connector. The module is available either in
four-port (GATM4) or eight-port (GATM8) configurations.

NN40020-302

Chapter 2 Introducing the BCM50 hardware 43

Figure 12 GATM faceplate

Analog direct inward dialing media bay module

The analog direct inward dialing (ADID) MBM provides an interface for four or eight analog
public switched telephone network (PSTN) lines. The ADID MBM supports both pulse and tone
dialing as well as disconnect supervision, and direct inward dialing call progress signaling as
described in standard TIA-464C.

The ADID MBM uses an RJ-21 connector for trunk connections. The figure ADID faceplate on
page 43 shows the ADID faceplate LEDs and connectors. The ADID is available either in
four-port (ADID4) or eight-port (ADID8) configurations.

Figure 13 ADID faceplate

Station media bay modules

Station MBMs connect telephones and analog telecommunication devices to the BCM50 system.

The table Station MBMs on page 43 lists the available station media bay modules.

Table 4 Station MBMs (Sheet 1 of 2)

Module type What it does Special Notes

DSM16+/ DSM32+
(see Digital station media bay module on

page 44)

4x16
Combination of a CTM4 and a DSM16
(see 4x16 media bay module on page 44)

Connects a maximum of 16 (DSM16+) or
32 (DSM32+) digital telephones to the
BCM50 system.

Connects a maximum of four analog
public switched telephone lines to the
BCM50 system.

Also connects a maximum of 16 digital
telephones to the BCM50 system.

Installation and Maintenance Guide

—

—

44 Chapter 2 Introducing the BCM50 hardware

Table 4 Station MBMs (Sheet 2 of 2)

Module type What it does Special Notes

G4x16/G8x16
Combination of a GATM4/GATM8 and a

DSM16
(see G4x16 and G8x16 media bay

module on page 45)

ASM8
(see Analog station media bay modules

on page 45)

GASM
(see Analog station media bay modules

on page 45)

Note: See Market profile attributes on page 239 for supported regions.

Connects a maximum of four (G4x16) or
eight (G8x16) analog public switched
telephone lines to the BCM50 system.

Also connects a maximum of 16 digital
telephones to the BCM50 system.

Connects a maximum of eight analog
devices to the BCM50 system.

Connects a maximum of eight analog
devices to the BCM50 system.

This module provides the following
additional services: caller ID, pass
through, message waiting indication, and
disconnect supervision at the telephone.

This module downloads new firmware.

Digital station media bay module

The digital station media bay modules (DSM) support digital telephones on the BCM50 system.
This section describes the DSM16+ and DSM32+ media bay modules. See the figure DSM

faceplate LEDs and connectors on page 44.

The digital station media bay modules have the following characteristics:

—

—

—

• DSM16+—supports 16 digital telephones through one RJ-21 connector.

• DSM 32+—supports 32 digital telephones through two RJ-21 connectors.

Figure 14 DSM faceplate LEDs and connectors

DSM 16

4x16 media bay module

The 4x16 MBM provides both analog trunk connections and digital telephone connections. This
MBM provides connections for four analog trunk lines and 16 digital telephones. Each of the four
analog trunk lines support Caller ID and disconnect supervision. You can use an analog telephony
device, such as a modem, fax, or telephone to share the trunk through the Aux port beside Line 1.

DSM 32

NN40020-302

Chapter 2 Introducing the BCM50 hardware 45

The figure 4x16 faceplate LEDS and connectors on page 45 shows the 4x16 MBM. The 4x16
MBM has one RJ-21 connector and five RJ-11 connectors on the faceplate.

Figure 15 4x16 faceplate LEDS and connectors

G4x16 and G8x16 media bay module

The G4x16 MBM is a combination of GATM4 and DSM16 MBMs, while the G8x16 is a
combination of GATM8 and DSM16 MBMs.

The figure 4x16 faceplate LEDS and connectors on page 45 shows the G4x16/G8x16 MBM
faceplate with two RJ-21 (amphenol) connectors. The upper RJ-21 (amphenol) connector connects
16 digital telephones to the system, while the lower RJ-21 (amphenol) connector connects 4 or 8
analog PSTN lines with pulse and tone dialing, caller ID, and disconnect supervision in selected
markets.

Figure 16 G4x16/G8x16 faceplate LEDS and connectors

RJ-21 (amphenol)
connector for 16 digital
telephones

RJ-21 (amphenol)
connector for 4 or 8
analog PSTN lines

Analog station media bay modules

The analog station media bay modules (ASM8, ASM8+, and GASM) can connect to a maximum
of eight analog telecommunication devices. These devices are standard analog telephones,
cordless telephones, fax machines, answering machines, or modems. The maximum speed for a
modem connection is 28.8 Kb/s.

In addition to ASM8 features, the ASM8+ and GASM offer the following features:

• Visual Message Waiting Indicator (VMWI): LED indicates to the end user that a message is
waiting.

• Caller ID: provides the name, phone number, and other information about the caller to the end
user at the start of the call.

Installation and Maintenance Guide

46 Chapter 2 Introducing the BCM50 hardware

• Firmware downloading capability: The core can upgrade the ASM8+ and GASM firmware at
customer sites.

• Enhanced ringing capability: ASM8+ and GASM provide a ringing voltage of 2 REN/65 V
rms per port.

• The GASM8 is designated as an ONS (on-premise station) port.

• Disconnect supervision (Open Switch Interval (OSI) as per EIA/TIA 464): indicates to the
attached device, in an established communication, that the connected device releases the call.

Disconnect supervision note: When disconnect happens from the Central Office
(CO), the ASM8+ provides an open switch interval (OSI) to the off-hook station of
850 milliseconds (ms) (TIA/EIA 464 section 5.4.10.2.4, minimum is 600 ms) as a
disconnect signal. If the station remains on-hook after the disconnect signal, the
ASM8+ disconnects the station equipment from the network without returning a
tone (TIA/EIA 464 section 5.4.10.2.5[1]). After the station equipment goes
on-hook, the ASM8+ station interface is restored to on-hook (idle).

You must ensure the device, application, or interface card connected to an ASM8+
station interface conforms to these on-hook and off-hook conditions.

The ASM8, ASM8+, and GASM each has one RJ-21 connector on the faceplate. The figure

GASM faceplate LEDs and connectors on page 46 shows the GASM.

Figure 17 GASM faceplate LEDs and connectors

The ringer equivalency number (REN) (per port) for ASM8 is 1; the REN for ASM8+ and GASM
is 2.

Note: The termination of the analog interface can consist of any combination of devices,
subject only to the requirement that the sum of the RENs of all the devices does not exceed
the REN of the interface to which the device is connected.

NN40020-302

Chapter 2 Introducing the BCM50 hardware 47

The table ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications on page 47
shows the specifications for ATA2, ASM8, GASM, and GASI.

Table 5 ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications (Sheet 1 of 2)

Specification ATA2 ASM8 ASM8+ GASM GASI

Ringing frequency
(North America)

Ringing frequency
(Europe)

Ringing voltage (North
America)

Ringing voltage
(Europe)

Loop current 20 mA minimum 20 mA minimum 20 mA minimum 20 mA minimum 20 mA minimum

Battery feed voltage –48 V dc

FIC code OL13ABC N/A N/A N/A N/A

Ringer equivalency
number

ATA2 to BCM50 loop
resistance (cable only)

Analog loop resistance
on terminal side for
voice applications
(cable only)

Analog loop resistance
on terminal side for
data applications
(cable only)

Input impedance at tip
and ring

Return loss > 20 dB for 200

Insertion loss on an
internal call

Insertion loss on an
external call

20 Hz ± 1 Hz 20 Hz ± 1 Hz 20 Hz ±1 Hz 20 Hz ±1 Hz 20 Hz ±1 Hz

± 1 Hz 25 Hz ± 1 Hz 25 Hz ± 1 Hz 25 Hz ± 1 Hz 25 Hz ± 1 Hz

25 Hz

80 V rms

75 V rms

± 10% 55 V rms ± 10% 65 V rms ± 10% 65 V rms ± 10% 65 V rms ± 10%

± 10% N/A 65 V rms ± 10% 65 V rms ± 10% 65 V rms ± 10%

± 10% –48 V dc ± 10% –29 V dc ± 10% –48 V dc ± 10% –48 V dc ± 10%

31222

135 ohms
(800 m of

0.5-mm wire or
2600 ft of
24-AWG wire)

1300 ohms
(7200 m of

0.5-mm wire or
26000 ft of
24-AWG wire)

200 ohms
(1231 m of

0.5-mm wire or
4000 ft of
24-AWG wire)

600 ohms 600 ohms 600 ohms 600 ohms 600 ohms

to 3400 Hz
(when
terminated with
600 ohms)

ATA2 to BCM50
loss 3.0 dB
dB

ATA2 to BCM50
loss 2.2 dB
dB; BCM50 to
ATA2 loss 0.5 dB

± 1.0 dB

N/A N/A N/A N/A

250 ohms
(1538 m of

0.5-mm wire or
5000 ft of
24-AWG wire)

250 ohms
(1538 m of

0.5-mm wire or
5000 ft of
24-AWG wire)

> 20 dB for 200
to 3400 Hz
(when
terminated with
600 ohms)

ATA2 to BCM50
loss 3.0 dB

± 0.5

dB

ASM to BCM50
loss 3.0 dB

± 1.0

dB; BCM50 to
ASM loss 0.5 dB

± 1.0 dB

200 ohms
(1231 m of

0.5-mm wire or
4000 ft of
24-AWG wire)

200 ohms
(1231 m of

0.5-mm wire or
4000 ft of
24-AWG wire)

> 20 dB for 200
to 3400 Hz
(when
terminated with
600 ohms)

ATA2 to BCM50
loss 3.0 dB

± 0.5

dB

ASM to BCM50
loss 3.0 dB

± 1.0

dB; BCM50 to
ASM loss 0.5 dB

± 1.0 dB

200 ohms
(1231 m of

0.5-mm wire or
4000 ft of
24-AWG wire)

200 ohms
(1231 m of

0.5-mm wire or
4000 ft of
24-AWG wire)

> 20 dB for 200
to 3400 Hz
(when
terminated with
600 ohms)

ATA2 to BCM50
loss 3.0 dB

± 0.5

dB

ASM to BCM50
loss 3.0 dB

± 1.0

dB; BCM50 to
ASM loss 0.5 dB

± 1.0 dB

200 ohms
(1231 m of

0.5-mm wire or
4000 ft of
24-AWG wire)

200 ohms
(1231 m of

0.5-mm wire or
4000 ft of
24-AWG wire)

> 20 dB for 200
to 3400 Hz
(when
terminated with
600 ohms)

ATA2 to BCM50
loss 3.0 dB

± 0.5

dB

ASM to BCM50
loss 3.0 dB

± 1.0

dB; BCM50 to
ASM loss 0.5 dB

± 1.0 dB

± 0.5

± 1.0

Installation and Maintenance Guide

48 Chapter 2 Introducing the BCM50 hardware

Table 5 ATA2, ASM8, ASM8+, GASM, and GASI analog device specifications (Sheet 2 of 2)

Specification ATA2 ASM8 ASM8+ GASM GASI

MWI type (see Note) Stutter tone Stutter tone Stutter tone/

Disconnect
supervision types

Note: The MWI type depends on the country profile, and the MWI voltage shown is a maximum value.

N/A N/A OSI EIA/TIA 464

Voltage MWI
(CO: 120 V)

section

4.5.10.2.4/

4.5.10.2.5.1

Stutter tone/
Reverse polarity/
Voltage MWI
(CO: 120 V)

OSI EIA/TIA 464
section

4.5.10.2.4/

4.5.10.2.5.1

BCM50 hardware

The following BCM50 hardware items simplify the setup and connection of the system:

• Rack-mount shelf on page 48

• Wall-mount bracket on page 49

• Power supply mounting bracket on page 50

• Patch panel on page 49

• Wiring field card on page 50

Rack-mount shelf

Stutter Tone/
Reverse polarity/
Voltage MWI
(PBX: 90 V)

N/A

To rack-mount a BCM50 unit (main unit or expansion unit), you need a rack-mount shelf. The
rack-mount shelf mounts in a standard 19-inch equipment rack. The BCM50 unit then clips into
the tabs on the rack-mount shelf. These tabs prevent the unit from sliding or falling off the shelf.

If the BCM50 system includes additional units, you can clip another unit to a second set of tabs on
the rack-mount shelf. You can clip additional units to tabs on the top of the other units. See the
figure rack-mount shelf installed in equipment rack on page 48.

Figure 18 rack-mount shelf installed in equipment rack

NN40020-302

Patch panel

The BCM50 patch panel simplifies the connections of lines and extensions to the main unit. The
BCM50 patch panel installs into the rack-mount shelf in a standard equipment rack and connects
to the RJ-21 telephony connector with a user-supplied RJ-21 cable. See the figure Patch panel

connectors on page 49.

Note: The four analog lines on the patch panel are only available with the standard main
units. The four analog lines are not available with the BRI series (b-series) main units.

Figure 19 Patch panel connectors

Chapter 2 Introducing the BCM50 hardware 49

01 02 03 04

01 02 0 3 04 01 0 2 03 04 09 10 11 1205 06 07 08

Wall-mount bracket

To wall-mount a BCM50 unit (main unit or expansion unit), you need a wall-mount bracket. The
wall-mount bracket is attached to the wall, and the unit is connected to the wall-mount bracket. If
the BCM50 system includes additional units, you need a wall-mount bracket for each unit.

Each wall-mount bracket includes a cable-management tray that you use to store and organize the
cables connected to the BCM50 units. See the figure Wall-mount bracket on page 49.

Figure 20 Wall-mount bracket

Installation and Maintenance Guide

50 Chapter 2 Introducing the BCM50 hardware

Power supply mounting bracket

The BCM50 single power supply mounting bracket enables you to install one power supply unit
on the wall next to your BCM50 system. The power supply mounting bracket helps you keep the
power cables neatly organized.

Wiring field card

The wiring field card (WFC) simplifies the connections of lines and extensions to the main unit.
The WFC installs into the cable-management tray of the wall-mount bracket and connects to the
RJ-21 telephony connector through a 50-pin header.

The WFC contains 12 eight-pin modular jacks for digital stations, 4 eight-pin modular jacks for
analog trunks, and 4 eight-pin modular jacks for analog stations. The eight-pin modular jacks
accept RJ-45 or RJ-11 modular plugs.

A terminal block is available to connect auxiliary equipment. A 50-pin header connects to the
BCM50. See the figure Wiring field card on page 50.

Note: The four analog lines on the WFC are only available with the standard main units.
The four analog lines are not available with the BRI series (b-series) main units.

Figure 21 Wiring field card

Ter m in a l bl o c k

Connectors for
digital stations

BCM50 components

For descriptions of the BCM50 components:

• Power supply on page 51

• Power supply adapter cord (international users) on page 51

• Uninterruptable power supply on page 51

• Hard disk on page 52

• Router card on page 55

• Cooling fan on page 53

• RJ-21 telephony connector on page 54

Connectors
for analog
trunks

50-pin header

Connectors
for analog
stations

NN40020-302

Power supply

The power supply is an external device that connects to the BCM50 units. See the figure BCM50

power supply on page 51. You must have one power supply for each unit in your BCM50 system.

Figure 22 BCM50 power supply

Chapter 2 Introducing the BCM50 hardware 51

To B C M 5 0
unit

Power supply
cord

Power supply
cable (NA shown)

To w a l l
outlet

A BCM50 power supply is included with each main unit and expansion unit.

In addition, international (non-North American) users require a power supply adapter cord for
each main unit and expansion unit.

Power supply adapter cord (international users)

The power supply adapter cord is for international (non-North American) BCM50 users. The cord
connects to the power supply on one end and to the (C-14) BCM50 power bar on the other end.

You require one power supply adapter cord for each power supply you want to connect to the
power bar.

Uninterruptable power supply

An uninterruptable power supply (UPS) is an optional device that maintains continuous operation
during a power interruption or failure. The UPS provides power source monitoring and battery
backup activation so that critical BCM50 functionality is maintained.

During a power failure, the UPS provides sufficient time to either correct the problem or activate a
contingency plan to sustain services. The UPS performs a graceful shutdown of the BCM50 two
minutes before the UPS battery power is drained.

The BCM50 supports American Power Conversion (APC) UPS devices that use a USB control
interface. The APC UPSs include the APC UPS-Smart family (for example, UPS-Smart 750 and
UPS-Smart 1000) and UPS-Back family (for example, UPS-Back 500 ES and UPS-Back 350 ES).
You can use the UPS control software to configure various operational settings.

Installation and Maintenance Guide

52 Chapter 2 Introducing the BCM50 hardware

Note: For the UPS to function correctly, you must connect it before you power up

the BCM50 system. If you connect a UPS to a running system, the UPS does not
function.

The USB port on the UPS uses a different communication speed than the USB port on the BCM50
system. Due to this difference, you must use an industry-standard USB hub (USB 1.1-compatible)
to connect the UPS data connection to the BCM50 system. The USB hub not only provides
additional USB ports, it converts the data communication speed so the UPS and BCM50 system
can communicate properly.

On BCM50 systems with more than one unit, you must connect the power supplies for all the units
must to a single UPS.

The interaction between the UPS and the BCM50 occurs in three stages:

1 Configuration—This stage sends configuration information to the UPS device and requires

minimal user interaction.

2 Monitoring—This stage is a steady-state, periodic monitoring cycle where the BCM50 reads

the status of the UPS. This stage requires minimal user interaction.

3 Failure condition—This stage initiates an action when a threshold value is surpassed.

The BCM50 system requires user interaction in the case of a planned system shutdown. You must
manually power down the UPS and the BCM50 main unit when performing a system shutdown.

The UPS feature is supported in all markets (110~120V and 220~240V power standards).

Hard disk

Each main unit contains a single hard disk and a hard disk bracket to install it in the main unit. See
the figure Hard disk and bracket on page 53.

For installation and replacement instructions, see Replacing an internal component on page 189.

NN40020-302

Figure 23 Hard disk and bracket

Hard disk
bracket

Chapter 2 Introducing the BCM50 hardware 53

Hard disk

Cooling fan

The main units have one cooling fan. The expansion unit has two cooling fans. See the figure

Cooling fan on page 53.

Figure 24 Cooling fan

fan connector

The cooling fan mounts in the back of the BCM50 enclosure.

For information about how to install or replace the cooling fan, see Replacing an internal

component on page 189.

Installation and Maintenance Guide

54 Chapter 2 Introducing the BCM50 hardware

RJ-21 telephony connector

Use the RJ-21 telephony connector to connect a 25-pair (RJ-21) cable to the main unit. Then use
these 25 pairs of wires to connect to the following telephony devices (see RJ-21 telephony

connector wiring chart on page 203):

• Four analog lines (standard main units only)
Use these connections for analog trunks from the Public Switched Telephone Network
(PSTN). The four analog lines on the RJ-21 telephony connector are not available on the BRI
series (b-series) main units.

• Four analog telephones
Use these connections for analog telephony devices such as single-line telephones, fax
machines, and modems.

• Auxiliary ringer
Use this connection for an auxiliary ringer (customer supplied). The BCM50 system uses the
auxiliary ringer to control the cadence of an auxiliary ringer. You must use this output in a
low-current, low-voltage application only. Do not use this output for switching the auxiliary
ringer directly.

• Page output
Use this connection to connect an internally generated voice-paging signal to an external
paging amplifier (customer supplied).

• Page relay
When you use the page output to connect an external paging amplifier, you also use the page
relay. The page relay connects to a floating relay contact pair. The BCM50 system uses the
page relay to control the external paging amplifier.

• Music input
Use the Music input to connect an external music source that supplies a signal to held lines
(music on hold) or telephone speakers (background music). The input source can be any
available radio or music source approved for connection to the network. If you use this
connection, do not use the Music input jack on the main unit faceplate.

• Twelve digital telephones
Use these connections for digital telephones. For a list of digital telephones that are compatible
with the BCM50 system, see Telephones and adapters on page 56.

NN40020-302

Warning: External equipment connected to the auxiliary ringer, page relay, page output,
and music-on-hold interfaces must use safety extra low voltage (SELV).
All four interfaces are SELV and the external equipment connected to these interfaces
must be SELV. If these interfaces are not SELV, you must use external line isolation units
(LIU).

Note: The analog trunk interfaces and analog telephony device interfaces on the RJ-21
telephony connector are compatible with the North American telephony interface
standards only.
If your BCM50 system is in a country that uses a different telephony standard, you must
use media bay modules for your analog trunks and media bay modules or ATAs for your
analog telephony devices.

Router card

The BCM50e main unit has a router card that uses an Ethernet interface to connect to a WAN edge
device (for example, an external ADSL modem or a cable modem).

The BCM50a main unit has a router card that uses an ADSL interface to connect the BCM50
system to the Internet Service Provider (ISP).

For information about replacing the router card, see Replacing an internal component on page 189.

Field-replaceable units

The table Field-replaceable units on page 55 and the table Media bay modules on page 55 provide
a list of field-replaceable units (FRU) and media bay modules (MBM) for the BCM50 system. Use
these tables as references when you need to order, replace, or install hardware components. The
tables provide references to the component descriptions and installation procedures.

Note: The product engineering code (PEC) can change over time; consult the
catalog for the latest information.

Chapter 2 Introducing the BCM50 hardware 55

Table 6 Field-replaceable units

Component description FRU Description Replacement procedure

Router card with Ethernet connector “Router card” “Replacing an internal component”

Router card with ADSL interface “Router card” “Replacing an internal component”

Hard disk, programmed “Hard disk” “Replacing an internal component”

Power supply “Power supply” “Replacing a power supply”

Cooling fan “Cooling fan” “Replacing an internal component”

Table 7 Media bay modules (Sheet 1 of 2)

Component description FRU Description Installation procedure

4x16 MBM “4x16 media bay module” “To install an MBM”

Analog DID “Analog direct inward dialing media

bay module”

ASM8 MBM “Analog station media bay modules” “To install an MBM”

BRIM MBM “Basic rate interface media bay

module”

DSM16+ MBM “Digital station media bay module” “To install an MBM”

DSM32+ MBM “Digital station media bay module” “To install an MBM”

DTM MBM “Digital trunk media bay module” “To install an MBM”

“To install an MBM”

“To install an MBM”

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56 Chapter 2 Introducing the BCM50 hardware

Table 7 Media bay modules (Sheet 2 of 2)

Component description FRU Description Installation procedure

G4x16/G8x16 MBM “G4x16 and G8x16 media bay

module”

GASM MBM “Analog station media bay modules” “To install an MBM”

GATM4/GATM8 MBM “Global Analog Trunk Module” “To install an MBM”

“To install an MBM”

Telephones and adapters

The telephony components perform call processing and connect the telephones or peripheral
telephony equipment, such as fax machines, to the Public Switched Telephone Network (PSTN)
lines. They also process telephony information received through an IP link.

Business telephones and adapters connect to the RJ-21 telephony connector on the main unit and
to the MBMs installed in the expansion units. The BCM50 system supports Business Series
Terminal sets, IP Telephony-based sets, and analog telephony devices.

The following telephones and devices can be used with the BCM50 system:

Digital Phone 7100—one-line display and one memory button
without indicator.

Digital Phone 7000 (not shown) (International only)—four
memory button, without display or indicators.

Digital Phone 7208—one-line display and eight memory buttons
with indicators.

Digital Phone 7316—two-line display, three display
buttons, 16 memory buttons with indicators, and eight
memory buttons without indicators. Supports separate
mute key and a headset key under the dial pad.

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Chapter 2 Introducing the BCM50 hardware 57

Digital Phone 7316E—two-line display, three display
buttons, 16 memory buttons with indicators, and eight
memory buttons without indicators. Handsfree, mute,
and headset buttons are below the dial pad. The default
button assignment for the 7316E is different from the

7316.

Digital Phone 7316E + Key Indicator Module
(KIM)—all the features of the 7316E plus 24

extra memory buttons with indicators per KIM.
Configure as an enhanced central answering
position (CAP) that supports line and hunt group
appearances (the eKIMs) or as an ordinary CAP
that supports only memory button programming
(the OKIMs). Supports a maximum of four
eKIMs and up to nine OKIMS.

BST Doorphone—used as an intercom to control access to your building. Pressing the Call
button on the BST Doorphone calls one or more telephones or sends a distinctive chime to
telephones in an assigned page zone, or both.

Placing an internal call from any telephone on the system to the BST Doorphone sets up a
two-way voice call. Additionally, you can install a Door Opening Controller to activate locks on
doors or gates. Contact your system administrator for more information.

See the BST Doorphone User Guide for more information.

Digital Phone 7406 Cordless Telephone system—provides cordless mobility in a
small office environment. Each base station supports three telephones. Function is
based on the 7316 telephone. The base station connects to a digital station media bay
module on the system.

Provides six memory buttons with indicators and a two-line display with three
display buttons.

ABC DEF

For installation instructions, see the T7406 Cordless Telephone Installation Guide.

1 2 3

GHI JKL MNO

4 5 6

PQRS TUV WXYZ

7 8 9

0

#

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58 Chapter 2 Introducing the BCM50 hardware

IP Phone 1120 (not shown)—brings voice and data to the desktop
by connecting directly to a Local Area Network (LAN) through an
Ethernet connection.

The IP Phone 1120 has a graphical, high-resolution LCD display,
backlit, with adjustable contrast. Four user-defined feature keys and
four soft keys are available.

IP Phone 1140—brings voice and data to the desktop by
connecting directly to a Local Area Network (LAN) through an
Ethernet connection.

The IP Phone 1140 has a graphical, high-resolution LCD display, backlit, with adjustable
contrast. Six user-defined feature keys and four soft keys are available.

IP Phone 2001 (not shown)—connects through an IP link to the BCM50 system. This phone has
a single-line text display with a row of display keys on the second display line. The IP Phone
2001 can be used to call through any type of BCM50 line.

IP Phone 2002 (not shown)—connects through an IP link to the BCM50 system. This phone has
a two-line text display with a row of display keys on the third display line, and four memory keys
with indicators. You can use the IP Phone 2002 to call through any type of BCM50 line.

IP Phone 2004—connects through an IP link to the BCM50
system. This phone has a six-line text display with a row of
display keys on the eighth display line, and six memory keys
with indicators. You can use the IP Phone 2004 to call through
any type of BCM50 line.

IP Phone 2007 (not shown)—connects to a LAN through an
Ethernet connection. The IP Phone 2007 supports call
processing features, and can work with an External
Application Server to display Web-based and interactive
applications on the large, color LCD touch screen.

IP Softphone 2050 (not shown)—provides Voice over IP
(VoIP) services using a telephony server and your company
local area network (LAN).

Nortel IP Audio Conference Phone 2033—provides audio conferencing.
The keypad provides many of the set features of the basic Business Series
telephones without display or memory buttons. The audio conference phone
has three microphones.

Wireless LAN handsets 2210, 2211, and 2212—provides telephony access over the LAN or
WAN through an 802.11-compatible access point. These handsets emulate the function of the IP
Phone 2004. They have a three-line truncated display and display keys. There are no line keys,
but the telephone uses a line key menu on which lines, intercom keys, and button features can be
programmed.

See the WLAN IP Telephony Installation and Configuration Guide for details.

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Chapter 2 Introducing the BCM50 hardware 59

Note: Nortel provides limited support for legacy Norstar telephones.

Accessories

You can use the following accessories with the BCM50 system:

Station auxiliary power supply (SAPS)—provides power for the central answering position
(CAP) when you connect the 7316E to five or more KIMs. You can also extend the loop length
between a telephone or terminal and the BCM50 system from 1000 to 2600 feet. You must use a
dedicated cable to connect the two locations.

Analog Terminal Adapter 2 (ATA2)—converts digital signals to analog signals to allow
communication with analog devices such as fax machines, modems, and answering machines. The
ATA2 supports a maximum transmission rate of 28.8 Kb/s. With a single-line telephone, the
ATA2 supports a long-loop configuration.

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60 Chapter 2 Introducing the BCM50 hardware

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Chapter 3 Viewing the BCM50 system LEDs 61

Chapter 3

Viewing the BCM50 system LEDs

This section describes the BCM50 system LEDs.

For information about the BCM50 system LEDs:

• System status LEDs on page 61

• LAN port LEDs on page 62

• ADSL router LEDs (BCM50a and BCM50ba only) on page 64

• Ethernet router LEDs (BCM50e and BCM50be only) on page 65

• BRI port LEDs on main unit (BRI series only) on page 66

• Media bay module LEDs (expansion units only) on page 66

• DTM LEDs on page 67

• BRIM LEDs on page 68

System status LEDs

The two system status LEDs on the BCM50 main units (BCM50, BCM50a, BCM50e, BCM50b,
BCM50ba, and BCM50be) show the current state of the BCM50 system.

You can view the system status LEDs on the faceplate and on the top of the main unit. See the
figure Location of system status LEDs on a main unit on page 61. The bottom LED is the power
LED, and the top LED is the status LED. Under normal operating conditions, both LEDs are solid
green.

Figure 25 Location of system status LEDs on a main unit

Status LED

Power LED

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62 Chapter 3 Viewing the BCM50 system LEDs

The table System status LEDs states and descriptions on page 62 describes the meaning of the
system status LEDs after the system boots up and is in service.

Table 8 System status LEDs states and descriptions

Power

Solid green Solid green Normal operation.

Solid green Solid red A Major or Critical alarm is activated on the BCM50.

Flashing green Solid green Contact technical support (see How to get help on page 30).

Off Off No power to BCM50.

Status

Description

You must clear the status LED using the Element Manager Alarm Panel.
The LED does not clear itself.

See the Administration Guide for more information.

During BCM50 system startup or reboot, the system status LEDs move through a sequence of state
changes. If either the power LED or status LED is yellow, the system is initializing and is not
ready for service. The table System status LEDs during startup or reboot on page 62 shows the key
states indicating service availability.

Table 9 System status LEDs during startup or reboot

Power

Solid yellow Any System initializing; not ready for service.

Flashing or solid
green

Flashing green Flashing green BCM50 telephony services are available, including IP telephony and

Solid green Flashing green Administrator can log into BCM50 with Element Manager.

Solid green Solid green All BCM50 services are functioning, and the system is ready for normal

Status

Flashing or
solid yellow

Description

System initializing; not ready for service.

voice mail.

use.

LAN port LEDs

Each LAN port on the main unit and expansion unit has two LEDs. These LEDs indicate the status
of the connection for that LAN port. The figure LAN port LED locations on page 63 shows the
location of these LEDs on the main units and expansion unit.

Note: The expansion ports on the main unit also function as LAN ports. The
expansion port LEDs indicate LAN activity only. The LEDs do not indicate
expansion unit presence. The LEDs do not light.

NN40020-302

Figure 26 LAN port LED locations

Router card LAN ports

Chapter 3 Viewing the BCM50 system LEDs 63

LAN port

LAN port LEDs

Expansion port

LAN ports

Expansion/
LAN ports

The table LAN port and expansion port LED indicators on page 63 describes the possible LED
states for the LAN ports LEDs.

Table 10 LAN port and expansion port LED indicators

LED Status Description

Yellow On The LAN port is operating at 10 Mb/s.

Green On The LAN port is operating at 100 Mb/s.

Both LEDs Off No connection.

Any LED Flashing The LAN port is sending or receiving network data. The frequency of the flashes

increases with increased traffic.

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64 Chapter 3 Viewing the BCM50 system LEDs

ADSL router LEDs (BCM50a and BCM50ba only)

The three ADSL router LEDs on the faceplate of the BCM50a and BCM50ba main units monitor
router status, data, and DSL. The figure ADSL router LEDs on the BCM50a and BCM50ba main

units (BCM50a shown) on page 64 shows the location of the three ADSL router LEDs.

Figure 27 ADSL router LEDs on the BCM50a and BCM50ba main units (BCM50a shown)

Router
status

Data

DSL

The table ADSL router LED descriptions on page 64 describes the possible ADSL router LED
states.

Table 11 ADSL router LED descriptions

LED Status Description

On The router card is functioning properly.
Router
status

Data

DSL

Off The router card is not ready or malfunctioned.

Flashing The router card is rebooting.

Flashing The router card is sending or receiving data through the WAN port.

Off The router card is not sending or receiving data through the WAN port.

On

Off The DSL link is not functioning.

Flashing The router card is initializing the DSL line.

The router card is linked successfully to a digital subscriber line access
multiplexer (DSLAM).

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Chapter 3 Viewing the BCM50 system LEDs 65

Ethernet router LEDs (BCM50e and BCM50be only)

The three Ethernet router LEDs on the BCM50e and BCM50be main units monitor the router
status and the WAN port. The figure Ethernet router LEDs on the BCM50e and BCM50be main

units (BCM50e shown) on page 65 shows the location of the three Ethernet router LEDs.

Figure 28 Ethernet router LEDs on the BCM50e and BCM50be main units (BCM50e shown)

Router
status

WAN port
LEDs

WAN port LEDs

The table LAN port LED indicators on page 65 describes the possible Ethernet router LED states.

Table 12 LAN port LED indicators

LED Status Description

On The router card is functioning properly.

Router status

WAN port yellow On The WAN port is operating at 10 Mb/s.

WAN port green On The WAN port is operating at 100 Mb/s.

Any WAN port
LED

Both WAN port
LEDs

Off The router card is not ready or malfunctioned.

Flashing The router card is rebooting.

Flashing

Off

The WAN port is sending or receiving network data. The frequency of the
flashes increases with increased traffic.

No connection.

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66 Chapter 3 Viewing the BCM50 system LEDs

BRI port LEDs on main unit (BRI series only)

The three BRI port LEDs on the BCM50b, BCM50ba, and BCM50be main units monitor the BRI
port status. The figure Ethernet router LEDs on the BCM50e and BCM50be main units (BCM50e

shown) on page 65 shows the location of the BRI ports and LEDs.

Figure 29 BRI port LEDs on the BCM50b, BCM50ba, and BCM50be main units (BCM50b shown)

BRI ports

D channel

B channel 1

B channel 2

The table BRI port LED indicators on page 66 describes the possible BRI port LED states.

Table 13 BRI port LED indicators

LED (channel) Status Description

D On (green) D channel is functioning through this BRI port.

B1 On (green) B channel 1 is functioning through this BRI port.

B2 On (green) B channel 2 is functioning through this BRI port.

Media bay module LEDs (expansion units only)

The two media bay module (MBM) LEDs on an expansion unit show the power and status of the
MBM. The figure MBM LEDs on page 66 shows the location of the
LEDs on an MBM. The power and status LEDs are in the same location on all MBMs.

Figure 30 MBM LEDs

Power Status

(Power) and (Status)

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Chapter 3 Viewing the BCM50 system LEDs 67

The table MBM LED descriptions on page 67 describes the possible MBM LED states.

Table 14 MBM LED descriptions

Power Status Description

Off Off The MBM has no power, or a failure occurred on the MBM power converter.

On Off BCM50 to expansion unit failure or system initialization.

On Blinking Hardware is working, but an operational problem exists such as:

• no link to the main unit is detected

• frame alignment is lost on messages from the main unit

• bandwidth not allocated

• MBM is in maintenance state

• MBM is in download state (GASM, GATM4/GATM8)

Blinking Blinking The MBM has power, but a hardware problem exists such as:

• partial failure of power converter

• thermal overload

• fan failure

On On The MBM is ready to operate.

DTM LEDs

The DTM has additional LEDs that are not on most other MBMs. The figure DTM LEDs on page
67 shows the location of the DTM LEDs.

Figure 31 DTM LEDs

Power LED
Status LED
In service LED
Loopback test LED
Receive LEDs
Transmit LEDs

The table DTM LED functions on page 67 describes the functions of the DTM LEDs.

Table 15 DTM LED functions (Sheet 1 of 2)

LED Status Descriptions

Power – See “Media bay module LEDs (expansion units only)” for details.

Status – See “Media bay module LEDs (expansion units only)” for details.

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68 Chapter 3 Viewing the BCM50 system LEDs

Table 15 DTM LED functions (Sheet 2 of 2)

LED Status Descriptions

In service Flashing The T1, ETSI, or PRI trunks are out of service because a loopback test is

running or the DTM is initializing.

Loopback test On A continuity loopback test is running.

Receive alarm On A problem with the received digital transmission. This half-duplex link does

not work.

Receive error On A small error as a result of degraded digital transmission. Possible causes are

Transmit alarm On The DTM cannot transmit. The DTM sends an alarm indication signal (AIS) to

Transmit error On The DTM is sending a remote alarm indication (RAI) carrier failure alarm

All LEDS Flashing The DTM is initializing.

an ohmic connection, water ingress, or too long a loop.

the terminating switch. This half-duplex link does not work.

(CFA) to the terminating switch. If the transmit alarm is not on, this error
indicates a far-end or cable problem.

BRIM LEDs

The BRIM has one additional LED beside each RJ-48C jack. These LEDs are on when the ISDN
line is active. The figure BRIM LEDs on page 68 shows the location of the LEDs on a BRIM.

Figure 32 BRIM LEDs

Power LED
Status LED

For more information on the power and status LED functions, see Media bay module LEDs

(expansion units only) on page 66.

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Chapter 4 Determining DHCP server configuration and IP address 69

Chapter 4

Determining DHCP server configuration and IP address

Each main unit has a dynamic host configuration protocol (DHCP) server. This DHCP server
supplies Nortel IP Phones and client computers with IP addresses and connection information.

If the main unit has no integrated router, then you can configure the DHCP server using Element
Manager.

If the main unit has an integrated router, then the DHCP server on the main unit is disabled and the
you can configure the DHCP server using the Router Configuration page.

For more information about configuring the DHCP server, see the procedure To configure DHCP

server settings on page 140.

The BCM50 system can have a main unit with or without an integrated router:

• BCM50 and BCM50b main units (no integrated router) on page 69

• BCM50a, BCM50ba, BCM50e, and BCM50be main units (with integrated router) on page 70

BCM50 and BCM50b main units (no integrated router)

By default, the main unit is configured with a dynamic IP address, which means the IP
configuration is received from a DHCP server.

The BCM50 and BCM50b main units can have two DHCP server configurations:

• If an external DHCP server is not present on page 69

• If an external DHCP server is present on page 70

If an external DHCP server is not present

If an external DHCP server is not present, then the main unit uses the following default IP
configuration:

IP address:

Subnet mask:

Gateway:

The DHCP server on the main unit supplies IP configuration information for all IP devices (PCs
and IP Phones). The DHCP server also supplies specific connection information to the IP Phones.

192.168.1.2

255.255.255.0

192.168.1.1

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70 Chapter 4 Determining DHCP server configuration and IP address

If an external DHCP server is present

Warning: The DHCP server on the main unit is enabled by default. If your

network already contains a DHCP server, then disable the DHCP server on the
main unit. For more information about disabling the DHCP server, see the
procedure To disable the DHCP server on the BCM50a, BCM50e, BCM50ba, and

BCM50be main units on page 71.

If an external DHCP is present, then the BCM50 system uses the IP configuration supplied by the
external DHCP server. In this case, the DHCP server on the main unit supplies only IP Phones
with IP configuration information. The DHCP server on the main unit does not supply any other
devices with IP settings. This means that the administrator need not set up the external DHCP
server to supply configuration settings to the IP Phones.

The DHCP server on the main unit must configure a range of IP addresses to supply to the
IP Phones. The DHCP server uses the top 20 percent of a subnet.

For example, if the external DHCP server supplies the IP address 177.218.21.45 (subnet mask is

255.255.255.0) to the BCM50, then the BCM50 DHCP server reserves the range 177.218.21.200
to 177.218.21.254.

You can verify and change this default range using Element Manager.

The administrator must ensure that this range agrees with the network configuration—the external
DHCP server does not use the range.

BCM50a, BCM50ba, BCM50e, and BCM50be main units (with integrated router)

By default, you configure the BCM50a, BCM50ba, BCM50e, and BCM50be main units with a
dynamic IP address, meaning that these units request an IP configuration from a DHCP server.
Because the integrated router has a DHCP server, this DHCP server responds to the request.

By default, the router LAN IP address is 192.168.1.1, and the IP address assigned to the BCM50
system is the first IP address in the DHCP pool. If the DHCP pool starts at 192.168.1.190, then the
BCM50 is 192.168.1.190 even though the router is 192.168.1.1. Therefore, the BCM50 system
receives the IP address 192.168.1.2 (subnet mask is 255.255.255.0) from the DHCP server on the
integrated router.

The DHCP server on the integrated router supplies the information (primary and secondary TPS
server information, VLAN IDs) to the IP Phones enabling the phones to connect to the BCM50. If
the IP address of the integrated router changes, then the IP address reserved for the BCM50
automatically changes. The DHCP server on the integrated router automatically updates the S1
and S2 IP address.

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Chapter 4 Determining DHCP server configuration and IP address 71

To disable the DHCP server on the BCM50a, BCM50e, BCM50ba,
and BCM50be main units

1 From the Configuration tab, click the Data Services folder to expand it.

2 From the Data Services folder, select DHCP Server.

3 From the General Settings tab, click Launch Router WebGUI tool to launch the router

configuration tool.

For information about using the WebGUI tool, see the Integrated Router Configuration Guide
for your product.

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72 Chapter 4 Determining DHCP server configuration and IP address

NN40020-302

Chapter 5

Installing the BCM50 system

To install a BCM50 system, you must install a BCM50 main unit, any expansion units required,
and the telephony components.

The figure BCM50 installation overview on page 73 and the table BCM50 installation overview
on page 74 provide an overview of the installation process.

Figure 33 BCM50 installation overview

Chapter 5 Installing the BCM50 system 73

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74 Chapter 5 Installing the BCM50 system

Table 16 BCM50 installation overview (Sheet 1 of 2)

Tasks Description Refer to

Prepare for installation Verify these requirements:

• environmental

• electrical

• site telephony wiring

Get required equipment
and tools

Inspect the components Verify that the main unit box contains all the required

Install the main unit Mount the main unit using these options:

Inspect the components Verify that the expansion unit box contains all the required

Install a media bay
module (MBM)

Install an expansion unit Mount the expansion unit using the same option as the main

Connect the cables Connect the cables between these items:

Ensure you have these items:

• basic hardware

• optional equipment

• other hardware and tools

components in good condition.

• in an equipment rack with a rack-mount shelf (optional
patch panel)

• on a wall with a wall-mount bracket (optional wiring field
card)

• on a desktop

components in good condition.

Follow these steps to install an MBM:

• set the MBM dip switches to factory default

• insert the MBM into the expansion unit

unit:

• in an equipment rack with a rack-mount shelf (optional
patch panel)

• on a wall with a wall-mount bracket (optional wiring field
card)

• on a desktop

• on top of another unit (not for wall-mount option)

• main unit to expansion unit (if required)

• power supply to units (with and without a UPS)

• lines and extensions to the RJ-21 telephony connector
(optional patch panel or WFC)

• lines and extensions to the MBMs

• auxiliary equipment to the RJ-21 telephony connector
(optional patch panel or WFC)

Checking the installation
prerequisites on page 77

System equipment,
supplies, and tools on

page 79

Unpacking the main unit

on page 82

Installing the main unit on

page 81

Unpacking the expansion
unit on page 94

Verifying the media bay
module switch settings on

page 94

Installing the expansion
unit on page 97

Connecting the cables to
the BCM50 system on

page 99

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Chapter 5 Installing the BCM50 system 75

Table 16 BCM50 installation overview (Sheet 2 of 2)

Tasks Description Refer to

Install telephones and
peripherals

Install an ATA2 Perform these steps to install an ATA2:

You can install these telephones:

• System telephones

• Emergency telephone

• IP Phones

• T7406 cordless system

• connect the ATA2

• mount the ATA2

• test insertion loss measurement

• configure the ATA2

Installing telephones and
peripherals on page 115

Installing the analog
terminal adapter on page

119

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76 Chapter 5 Installing the BCM50 system

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Chapter 6 Checking the installation prerequisites 77

Chapter 6

Checking the installation prerequisites

Before you install a main unit or expansion unit, perform the following tasks:

• Determine the location for the BCM50 units, telephones, and other equipment based on space
and electrical requirements.

• Order the required trunks from the central office.

• Ensure that you have all the equipment and supplies you need to install the system.

For information about BCM50 installation prerequisites:

• Environmental requirements on page 77

• Electrical requirements on page 77

• Site telephony wiring requirements on page 78

• System equipment, supplies, and tools on page 79

Environmental requirements

Ensure you meet the installation environmental requirements. The installation area must be:

• a minimum of 4 m (13 ft.) from equipment such as photocopiers, electrical motors, and other
equipment that produces electromagnetic, radio frequency, and electrostatic interference

• within 1.5 m (5 ft.) of a three-wire grounded electrical outlet

• clean, dry, well ventilated, and free of traffic and excess dust

• within the temperature range of 5°C and 50°C (40°F and 120°F)

• from 20% to 80% non condensing relative humidity

• structurally strong and with enough space to support the BCM50 units

• a minimum of 46 cm (18 in.) from the floor

Note: The installation area must be of sufficient height from the floor to prevent water
damage.

Electrical requirements

Ensure you meet the following electrical requirements:

• Power must be supplied from a non switched, unobstructed outlet within 1.5 m (5 ft.) of the
BCM50 units.

• The supplied power must be a dedicated 110 V to 120 V AC nominal (or 220 V to 240 V AC
nominal), 50 to 60 Hz, 15 A minimum service with a third-wire safety ground. The third-wire
safety ground provides shock protection and prevents electromagnetic interference.

Installation and Maintenance Guide

78 Chapter 6 Checking the installation prerequisites

Danger: Risk of electric shock

The safety of this product requires connection to an outlet with a third-wire ground. Use
only with the supplied BCM50 power supply and a three-wire power outlet.

Caution: Check ground connections

Ensure that the electrical ground connections of the power utility, telephone lines, and
internal metal water pipe system, if present, are connected. If these ground connections are
not connected, contact the appropriate electrical inspection authority. Do not try to make
the connections yourself.

You can connect the power supply to a power bar. The total length of the power cables from the
power supply to the electrical outlet (including power bar) must not exceed 2 m (6.5 ft.). You must
use a power bar approved by an appropriate National Test Body, with a third-wire ground. Nortel
recommends that you do not use an extension cord between the power supply and the power bar or
between the power bar and the electrical outlet.

Site telephony wiring requirements

The following sections describe the requirements for wiring digital telephony devices (digital
loop) and analog telephony devices (analog loop) to the BCM50 system:

• Digital loop on page 78

• Analog loop on page 78

Digital loop

You must meet the following parameters for a digital loop:

• one, two, or three twisted-pair cables per telephone

• DC loop resistance of less than 64 Ω

• cable length (0.5 mm or 24-AWG) less than 300 m (975 ft.)

• use of a station auxiliary power supply (SAPS) for loops 300 m (975 ft.) to 1200 m (3900 ft.).
In North America, the SAPS must be a CSA- or UL-approved Class 2 power source.
In Europe, the SAPS must be a Class II power source and CE marked.

• no bridge taps

Analog loop

You must meet the following parameters for an analog loop:

• maximum DC loop resistance of 208 Ω

• maximum cable length (0.5 mm or 24-AWG) of 1220 m (4000 ft.)

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Chapter 6 Checking the installation prerequisites 79

System equipment, supplies, and tools

For the equipment required to install the BCM50 system:

• Basic hardware on page 79

• Optional equipment on page 79

• Other hardware and tools on page 79

Basic hardware

The BCM50 system comprises a combination of the following hardware:

• main unit: BCM50, BCM50a, BCM50e, BCM50b, BCM50ba, or BCM50be

• expansion unit

• media bay module (MBM)

• telephones

• cabling for connections between hardware units

You can connect a maximum of two expansion units to a BCM50 system. Each expansion unit can
contain one MBM.

Note: You require keycodes for some hardware to function.

Optional equipment

You can add the following equipment to the BCM50 system to support specific requirements
beyond the basic hardware:

• station auxiliary power supply (SAPS)

• key indicator module (KIM) for T7316E telephones

• analog terminal adapter 2 (ATA2) if you connect analog equipment to a digital extension line

• uninterruptable power supply (UPS)

• USB hub (required if the system uses a UPS)

Other hardware and tools

You need the following equipment to install a BCM50 unit:

• mounting hardware
(either a rack-mount shelf, a wall-mount bracket per unit, or four rubber feet per unit)

• Phillips #2 screwdriver

• flat blade screwdriver

• pliers

• antistatic grounding strap

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80 Chapter 6 Checking the installation prerequisites

• punch-down tool

• surge protector (recommended)

• cables, 25-pair cable with right-feeding female RJ-21 connectors

• 3.5-mm mono audio jack (for external music source)

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Chapter 7

Installing the main unit

This section describes how to install the main unit. You can install the main unit in an equipment
rack, on a wall, or on a desktop.

The figure Overview of installing the main unit on page 81 shows the steps required to install the
main unit.

Figure 34 Overview of installing the main unit

81

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82 Chapter 7 Installing the main unit

For information about installing the main unit:

• Unpacking the main unit on page 82

• Installing the BCM50 unit in an equipment rack on page 82

• Installing the BCM50 unit on the wall on page 86

• Installing the BCM50 unit on a desktop or shelf on page 91

Unpacking the main unit

Open the main unit box and check that you have all of the following components:

• one main unit (either a BCM50, a BCM50a, or a BCM50e)

• one power supply

• one power supply cable

• one power supply retention clip

• four rubber feet

• one screw to secure the RJ-21 telephony connector

• one cable tie

• a documentation CD

•the Installation Checklist and Quick Start Guide

Visually inspect the components for damage during shipping.

If you find damage, contact your Nortel sales representative.

Installing the BCM50 unit in an equipment rack

You can install a BCM50 main unit in a standard 19-inch equipment rack along with your other
networking and telecommunications equipment.

To rack-mount a BCM50 unit, you need the optional rack-mount kit (NT9T6325). This kit
provides the parts to mount up to four BCM50 units into a standard 19-inch equipment rack. The
BCM50 unit mounts into the tabs on the rack-mount shelf. These tabs prevent the unit from sliding
around or falling off the shelf. If the BCM50 system includes additional units, you can mount
another unit onto a second set of tabs on the rack-mount shelf. You can mount any additional units
to tabs on the top of the other units.

If you need to better secure a BCM50 unit, use the screws provided (four per unit) to screw the
BCM50 to the rack. This is a “hardened” installation. For a hardened installation, install only two
units per rack—do not stack the units.

You can also use the optional patch panel to simplify the connections to the BCM50 RJ-21
telephony connector.

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Caution: For acceptable environmental conditions before selecting a location for the
BCM50 system, see Checking the installation prerequisites on page 77.

Chapter 7 Installing the main unit 83

Caution: To keep the BCM50 system operating at the optimal internal temperature, keep

the top, sides, and rear clear of obstructions and away from the exhaust of other equipment.

Place no objects, except other BCM50 units, on top of the main unit.

Use the following procedures to install a BCM50 unit in a rack:

• To install the rack-mount shelf in an equipment rack on page 83

• To install the BCM50 unit on the rack-mount shelf on page 84

• To install the power supply on the rack-mount shelf on page 85

To install the rack-mount shelf in an equipment rack

1 Determine the location in the rack where you want to install the BCM50 unit.

2 Position the rack-mount shelf in the rack.

3 Align the holes in the rack-mount shelf with the holes in the equipment rack rails.

4 Fasten the rack-mount shelf to the rack using the four rack screws (supplied with the

rack-mount kit). See the figure Fasten the rack-mount shelf to an equipment rack on page 83.

5 Proceed to Installing the BCM50 unit on the rack-mount shelf on page 83.

Figure 35 Fasten the rack-mount shelf to an equipment rack

Installing the BCM50 unit on the rack-mount shelf

The rack-mount shelf has slots molded into its surface to which you attach the BCM50 units. By
attaching the BCM50 units to these slots, you can prevent someone from accidently knocking
them off the rack-mount shelf.

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84 Chapter 7 Installing the main unit

If you install additional units, you can install a second unit on the shelf beside the first unit. You
can install another unit on top of each of the first two units. Nortel recommends a maximum of
four units per rack-mount shelf.

Select your installation option:

• To install the BCM50 unit on the rack-mount shelf on page 84

• To install a BCM50 unit on top of another unit on page 85

To install the BCM50 unit on the rack-mount shelf

1 Place the BCM50 unit on the rack so that the feet of the unit are in the depressions in the shelf.

2 Move the unit forward until the feet touch the front side of the depressions.

3 Slide the unit back until the feet click in place on the slots in the depressions. See the figure

Attach the units to the rack-mount shelf on page 84.

4 To further secure the unit, use the four self-tapping screws (for plastic) supplied with the

rack-mount kit to attach the unit to the rack-mount shelf. Make sure the screw holes in the unit
are aligned with the holes in the rack-mount shelf. Then insert the four screws through the
holes in the bottom of the shelf and into the screw holes in the bottom of the unit.

Caution: Use only the screws supplied with the rack-mount kit (NT9T6325). Do not
replace the screws. Other screws can damage the unit.

5 Continue with the procedure To install the power supply on the rack-mount shelf on page 85.

Figure 36 Attach the units to the rack-mount shelf

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To install a BCM50 unit on top of another unit

1 Insert the power supply retention clip into the BCM50 unit.

2 Place the BCM50 unit on top of the other unit. Make sure the feet of the unit are in the slots on

the top of the unit and in front of the slots. See the figure BCM50 unit slots and feet on page

85.

3 Slide the unit back until it clicks in place on the slots.

4 Continue with the procedure To install the power supply on the rack-mount shelf on page 85.

Figure 37 BCM50 unit slots and feet

Chapter 7 Installing the main unit 85

Slots Feet

To install the power supply on the rack-mount shelf

1 Place the power supply behind the BCM50 units on the back of the rack-mount shelf.

Make sure the power supply is on its side with the label facing the back of the shelf.

2 Use two cable ties to secure the power supply to the rack-mount shelf.

3 Repeat steps 1 and 2 for each power supply you mount.

To install the patch panel (optional)

1 Determine the location in the rack where you want to install the patch panel.

2 Position the patch panel in the rack.

3 Align the holes in the patch panel with the holes in the equipment rack rails.

4 Fasten the patch panel to the rack using the four rack screws (supplied with the patch panel).

5 Continue with the procedure To connect the cables to the patch panel (optional) on page 113.

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86 Chapter 7 Installing the main unit

Installing the BCM50 unit on the wall

To wall-mount a BCM50 unit, you need a wall-mount bracket. The wall-mount bracket attaches to
the wall, and the BCM50 unit connects to the wall-mount bracket. If the BCM50 system includes
additional units, you need a wall-mount bracket for each unit. Each wall-mount bracket includes a
cable-management tray that you use to store and organize the cables connected to the BCM50
units. An optional wiring field card simplifies the cable connections for the lines and extensions.

If desired you can install an optional plywood backboard 2 cm (3/4 in.) thick.

Caution: For acceptable environmental conditions before selecting a location for the
BCM50, see Checking the installation prerequisites on page 77.

Caution: You must mount BCM50 units side-by-side on the wall. DO NOT attempt to
mount units on top of each other when using the wall-mount option.

Caution: To keep the BCM50 operating at the optimal internal temperature, keep the top,
sides, and rear clear of obstructions and away from the exhaust of other equipment.

Use the following procedures to install the BCM50 unit on a wall:

• To install the BCM50 wall-mount bracket on page 86

• To install the BCM50 unit on the wall-mount bracket on page 88

To install the BCM50 wall-mount bracket

1 Use a pencil to mark the location of the plywood backboard on the wall. Use a ruler and a level

to make sure that the plywood backboard is level.

Note: Nortel recommends the use of a plywood backboard to simplify installing
multiple BCM50 units. However, due to the compact size and light weight of the
BCM50 units, a backboard is not required.

If you do not use a backboard, use the appropriate wall anchors or ensure the screws
are in a stud.

2 Mount the plywood backboard securely to the wall.

3 Place the wall-mount bracket on the backboard and mark the location of the center

keyhole-shaped screw hole on the plywood backboard. See the figure Wall-mount bracket on
page 87.

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Figure 38 Wall-mount bracket

1

Chapter 7 Installing the main unit 87

2

2

1

1

Attach the wall-mount bracket with 5 screws:

• Two screws mount through the cable trough
(open the cable-management door).

2

• Three screws mount as shown in the figure.

Note: When you use three screws, Nortel
recommends installing the screws in the three
holes labeled “1” or the three holes labeled “2”.

4 Prepare the wall-mount bracket by removing the alignment tabs:

• If this is the only unit in the BCM50 system, remove the alignment tabs on the right side of
the wall-mount bracket.

• If this is the last unit on a BCM50 system with multiple units, remove the alignment tabs
on the left side of the wall-mount bracket.

Place the additional wall-mount bracket on the backboard on the right side of the existing
wall-mount bracket. Use the alignment tabs to ensure the two wall-mount brackets are
properly aligned.

If these options do not meet your requirements, other options are available. For example, you
can route the Amphenol connector cable to the left of the unit, or you can route the cable
straight down the wall.

5 Attach the wall-mount bracket with five #8 x 2 cm (#8 x 0.75 in.) round-head wood screws:

a Install one screw in the backboard. Do not tighten the screw head against the backboard.

Leave approximately 0.5 cm (0.25 in.) of the screw exposed from the backboard.

b Hang the wall-mount bracket on the mounting screw.

c Use a level to make sure the wall-mount bracket is level.

d Install two screws into the screw holes in the wall-mount bracket. See the figure

Wall-mount bracket on page 87.

e Tighten the wood screws against the wall-mount bracket.

f Open the cable-management door.

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88 Chapter 7 Installing the main unit

g Install two screws into the screw holes in the cable trough.

6 If the BCM50 system has only one unit, go to the procedure To install the BCM50 unit on the

wall-mount bracket on page 88.

If the BCM50 system has more than one unit, repeat steps 3 to 6 for each wall-mount bracket.

7 Go to the procedure To install the BCM50 unit on the wall-mount bracket on page 88.

To install the BCM50 unit on the wall-mount bracket

1 Insert the power supply retention clip into the BCM50 unit.

2 Slide the wall-mount lock fully to the right (unlock position). See the figure Wall-mount lock

in unlock position on page 88.

Figure 39 Wall-mount lock in unlock position

3 Align the feet on the BCM50 unit with the four holes in the wall-mount bracket. See the figure

Attach the BCM50 unit to the wall-mount bracket on page 89.

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Figure 40 Attach the BCM50 unit to the wall-mount bracket

Chapter 7 Installing the main unit 89

4 Press the unit against the wall-mount bracket and slide the unit down until it clicks in place.

5 Slide the wall-mount lock to the left (lock position). See the figure Wall-mount lock in lock

position on page 89.

Figure 41 Wall-mount lock in lock position

6 Use the supplied screw to secure the wall-mount lock in position.

7 Repeat steps 1 to 6 for each additional BCM50 unit you install.

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90 Chapter 7 Installing the main unit

8 Install the BCM50 power supply using a method appropriate for your environment.

The power supply must be within 1.5 m (5 feet) of the BCM50 unit and within 1.5 m
(5 feet) of the AC power outlet (wall outlet or UPS).

9 Repeat step 8 for each BCM50 power supply.

To install the power supply using the BCM50 power supply unit
(optional)

1 Install up to three power supplies into the BCM50 power supply unit.

2 Install a wall-mount bracket beside your other wall-mount brackets. See the procedure To

install the BCM50 wall-mount bracket on page 86.

3 Slide the BCM50 power supply unit into the wall-mount bracket.

Installing the wiring field card (optional)

Install the optional wiring field card (WFC) in the cable-management tray of the main unit.

To install the WFC

1 Clear the WFC installation area of all cables.

2 Place the WFC in the installation area with the 50-pin header at the top.

3 Slide the WFC down until it is at the bottom of the installation area and held in place by the

three clips. See the figure Slide in the WFC on page 90.

Figure 42 Slide in the WFC

4 Press the WFC firmly at the top left corner, center, and right tabs.

The WFC snaps into place. See the figure Snap the WFC into place on page 91.

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Chapter 7 Installing the main unit 91

Figure 43 Snap the WFC into place

5 Optional—Install the three screws to secure the WFC in place.

6 Continue with the procedure To connect the cables to the wiring field card (optional) on page

113.

Installing the BCM50 unit on a desktop or shelf

To mount a BCM50 unit on a desktop or shelf, attach the supplied rubber feet to the bottom of the
unit. If the BCM50 system includes additional units, you can set the additional units beside, or
stack them on top of, the first unit. If you are mounting the additional units beside the first unit,
attach the supplied rubber feet to the bottom of each unit. If you are stacking the additional units
on top of the first unit, mount each unit into the tabs on top of another unit.

Caution: For acceptable environmental conditions before selecting a location for the
BCM50 system, see Checking the installation prerequisites on page 77.

Note: To keep the BCM50 unit operating at the optimal internal temperature, keep the
top, sides, and rear clear of obstructions and away from the exhaust of other equipment.

Place no objects, except other BCM50 units, on top of the main unit.

To install the BCM50 unit on a desktop or shelf

To install the BCM50 unit on a desktop or shelf:

1 Insert the power supply retention clip into the BCM50 unit.

2 Attach the four self-adhesive rubber feet to the bottom of the BCM50 unit by peeling off the

paper backing and placing the feet on the unit as indicated in the figure Location for feet on the

bottom of the BCM50 unit on page 92.

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92 Chapter 7 Installing the main unit

Figure 44 Location for feet on the bottom of the BCM50 unit

3 Position the BCM50 unit on a table or shelf. Make sure you leave enough space around the

unit for ventilation and access to the cables.

Attach feet here

4 If the BCM50 system has additional units, you can install the other units on top of, or beside,

the existing BCM50 unit.

• To install the additional units beside the existing unit, repeat steps 1 to 3 for each unit.

• To install the additional units on top of the existing unit, see the procedure To install a

5 Install the power supply next to the BCM50 unit.

The power supply must be within 1.5 m (5 feet) of the BCM50 unit and within 1.5 m
(5 feet) of the AC power outlet (wall outlet or UPS).

6 Repeat step 5 for each power supply.

Next step

If you install an expansion unit, proceed to Installing an expansion unit on page 93.

Otherwise, proceed to Connecting the cables to the BCM50 system on page 99.

BCM50 unit on top of another unit on page 85.

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Chapter 8

Installing an expansion unit

Adding an expansion unit increases the capacity of your BCM50 system by providing a method of
adding a media bay module (MBM). Each MBM you add increases the number of public switched
telephone network (PSTN) trunks or extensions that you can connect to the BCM50 system.

The figure Overview of installing a expansion unit on page 93 shows the steps required to install
the expansion unit.

Figure 45 Overview of installing a expansion unit

Chapter 8 Installing an expansion unit 93

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94 Chapter 8 Installing an expansion unit

For information about installing an expansion unit:

• Unpacking the expansion unit on page 94

• Verifying the media bay module switch settings on page 94

• Installing a media bay module in an expansion unit on page 97

• Installing the expansion unit on page 97

Unpacking the expansion unit

Open the expansion unit box and remove all the components. Check that the box contains the
following components:

• one expansion unit

• one expansion unit power supply

• one power supply cable

• one expansion cable (shielded Ethernet cable)

• one power supply retention clip

• four rubber feet

Visually inspect the components for damage during shipping. If you find damage, contact your
Nortel representative.

Warning: Make sure the power supply to the expansion unit is disconnected
before inserting or removing an MBM.

Verifying the media bay module switch settings

Each MBM has dip switches on the back or underside of the module. See the figure Switches on

the media bay module (not applicable for GASM or GATM) on page 95.

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Chapter 8 Installing an expansion unit 95

Figure 46 Switches on the media bay module (not applicable for GASM or GATM)

Underside of MBM

Back of MBM

dip switches

6543 21

On

Off

Rear view of MBM

Off

On

123456

Top of MBM

Note: The GASM and GATM MBMs have a dip switch configuration different
from that shown in the figure Switches on the media bay module (not applicable

for GASM or GATM) on page 95. For more information, see the procedure To s et
GASM dip switches on page 96 and the procedure To set GATM dip switches on

page 97.

Verify that the dip switches for your MBMs are in the default factory positions.

If you install a DTM, ADID4, ADID8, BRIM, 4x16, DSM16, DSM32, or ASM8, ensure that all
the switches are on, which is the default setting for the MBM switches. After you set the switches,
proceed to Installing a media bay module in an expansion unit on page 97.

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96 Chapter 8 Installing an expansion unit

To set G4x16 or G8x16 dip switches

1 Set the Module Select dip switches to on (up). See the figure G4x16/G8x16 dip switch

location on page 96.

2 Set the Mode/Country Select dip switches to off (down); this setting allows the MBM to

automatically download the country profile settings.

Figure 47 G4x16/G8x16 dip switch location

Rear of MBM

1 2 3 4 5 6

ON

OFF

Module Select

1 2 3 4 5 6 7 8

Mode/Country Select

ON

OFF

For information about line and DN settings, see the table G4x16/G8x16 lines and DNs settings
on page 96.

Table 17 G4x16/G8x16 lines and DNs settings

Expansion unit

1 05 01 065-068 (G4X16)

2 07 01 095-098 (G4X16)

Module

Card Lines DNs

253-268

065-072 (G8x16)

285-300

095-102 (G8X16)

To set GASM dip switches

1 For the dip switches on the left side at the rear of the module, set all switches to on.

2 For the dip switches on the right side at the rear of the module, set the switches according to

the table GASM dip switch settings (switch 1–3) on page 96 and the table GASM dip switch

settings (switch 4–8) on page 97.

Table 18 GASM dip switch settings (switch 1–3)

Switch Description Setting

Switch 1 Firmware download capability OFF—Standard mode (firmware downloading not

Switch 2 Set when the firmware is

Switch 3 Enable or disable echo

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downloaded from the BCM50
(for enhanced mode only)

cancellation

supported)
ON—Enhanced mode (firmware downloading supported)

OFF—if you want the GASM to download the firmware when
the firmware version in the BCM50 is different from the
version in the GASM (default)

ON—if you want the GASM to download the firmware
whenever a cold start is performed for the BCM50

OFF—Enables echo cancellation (default)
ON—Disables echo cancellation

Chapter 8 Installing an expansion unit 97

Table 19 GASM dip switch settings (switch 4–8)

Switches 4 to 8 select the region for the GASM as follows:

Switch 4Switch 5Switch 6Switch 7Switch 8

North America OFF OFF OFF OFF OFF

United Kingdom OFF OFF OFF OFF ON

Australia OFF OFF OFF ON OFF

Poland OFF OFF OFF ON ON

3 After you set the switches, proceed to Installing a media bay module in an expansion unit on

page 97.

To set GATM dip switches

1 For the dip switches on the left side at the rear of the module, set all switches to on.

2 For the dip switches on the right side at the rear of the module (country profile switches), set

all switches to off. The GATM downloads the country profiles automatically.

3 After you set the switches, proceed to Installing a media bay module in an expansion unit on

page 97.

Installing a media bay module in an expansion unit

Follow this procedure to install a media bay module (MBM).

To install an MBM

1 Attach one end of a grounding strap to your wrist and the other end to a grounded metal

surface.

2 With the face of the MBM toward you, insert the MBM into the expansion unit.

3 Push the MBM completely into the expansion unit. You hear a click when the MBM is firmly

seated in the expansion unit.

The MBM must be configured for it to function. For information about configuring an MBM,
see the procedure To configure the MBM(s) on page 152.

4 Proceed with Installing the expansion unit on page 97.

Installing the expansion unit

Make sure that the expansion unit is installed close enough to the main unit so that the supplied
expansion cable can be connected between the expansion unit and main unit.

The expansion unit can be mounted in a rack, on a wall, or on a desktop. Typically, the expansion
unit is mounted in the same way as the main unit.

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98 Chapter 8 Installing an expansion unit

Use one of the following procedures to mount the expansion unit:

• Installing the BCM50 unit in an equipment rack on page 82

• Installing the BCM50 unit on the wall on page 86

• Installing the BCM50 unit on a desktop or shelf on page 91

Next step

If you install a second expansion unit on the system, repeat the procedures in this section for the
second expansion unit.

After you install the expansion unit, proceed to Connecting the cables to the BCM50 system on
page 99.

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Chapter 9 Connecting the cables to the BCM50 system 99

Chapter 9

Connecting the cables to the BCM50 system

This section describes how to connect the telephone lines, telephony devices, and power to the
BCM50 system.

The figure Overview of connecting cables to the BCM50 system on page 99 shows the steps
required to connect the cables to the BCM50 system.

Figure 48 Overview of connecting cables to the BCM50 system

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100 Chapter 9 Connecting the cables to the BCM50 system

For information about connecting the cables to the BCM50 system:

• Connecting the expansion unit on page 100

• Connecting the power supply on page 102

• Connecting the lines and extensions on page 104

• Connecting the auxiliary equipment on page 109

Connecting the expansion unit

The expansion unit connects to the main unit through the expansion ports on the front of the units.
The figure Expansion ports on page 100 shows the location of the expansion ports on the BCM50
main unit and the expansion unit.

Figure 49 Expansion ports

Main unit

Expansion unit

Note: The expansion unit connected to expansion/LAN port 2 on the main unit is

designated as Expansion 1 in Element Manager, while the expansion unit
connected to expansion/LAN port 3 is designated as Expansion 2.

Use this information to configure the correct media bay module (MBM) in
Element Manager (see Configuring the media bay module on page 152).

Expansion/LAN

(port 2)

Expansion/LAN

(port 3)

Expansion

port

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