Nortel BCM50 Installation guide

Part No. N0027157 01
08 April 2005
BCM50
System Overview

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ght © Nortel Networks Limited 2005
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.
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All other trademarks and registered trademarks are the property of their respective owners.

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BCM50 System Overview
Business Communications Manager 50 (BCM50) is a complete, converged voice, data and
feature-rich business telephony applications solution for small business and small enterprise
branch offices. BCM50 gives you the features and applications of traditional small office PBX and
key systems, plus the new converged value of IP.
This system overview gives you a summary of the features and functionality of the BCM50. This
overview is for installers, network administrators, and anyone interested in a summary of BCM50.
BCM50 Hardware
Additional BCM50 Hardware
• BCM50 Expansion: a compact unit that accommodates the Media Bay Modules used by other
BCM platforms. The BCM50 main unit can support a maximum of two expansion units.
• Small System Wallmount Bracket: an inexpensive bracket designed for mounting the BCM50
or expansion unit to a wall. An optional wiring card is also available for use with the
wallmount bracket, which provides RJ-45 connectors for all main unit trunk and station
interfaces.
• Small System Rackmount Shelf: an inexpensive shelf designed for mounting a maximum of
4 BCM50s into a standard 19 inch rack. An optional patch field is also available that provides
RJ-45 connectors for all main unit trunk and station interfaces.
BCM50 is available in three configurations:
• BCM50: The compact main unit, suitable
for networks where integrated data routing
capability is not required, or networks that
already have an IP network
• BCM50e: includes an integrated Ethernet
router
• BCM50a: includes an ADSL router
For more information about the integrated
routers, see “BCM50e and BCM50a: BCMs
with Integrated Routers” on page 6.
For more information about BCM50 hardware,
see the BCM50 Installation and Maintenance
Guide.

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BCM50 supports the complete range of IP telephony capability offered by existing BCM products.
These features are enabled through the use of keycodes and require no additional hardware:
• VoIP Gateway (H.323): up to 12 VoIP trunks
• VoIP Telephony Clients: up to 32 VoIP Telephony clients, supporting the complete range of
Nortel IP phones
BCM50 Physical Dimensions
BCM50 has a compact plastic enclosure that is designed so that you do not need to add additional
hardware to enable features and applications. The compact size and flexible installation options
support fast installs, and accommodate the diverse environmental and physical conditions of small
businesses.
Physical dimensions of the BCM50 main unit and expansion unit:
The BCM50 main unit and expansion unit design features:
• external power supply
• stackable units
• rubber feet and can be installed on desktop or shelf
• optional wallmount bracket
• optional rackmount shelf
BCM50 Physical Interfaces
The BCM50 interfaces are designed so that you do not have to add additional hardware.
Your BCM50 comes with these interfaces:
• Twelve digital station ports that support the complete line of Business Series Telephones.
These ports are accessible through the front pane RJ-21 connector and are enabled through
keycodes.
• Four Analog Loop Supervised Trunks in versions using North American networking
standards. These ports are accessible through the front panel RJ-21 connector and are enabled
through keycodes.
• Four Analog Station interfaces with message waiting and CLID support in versions using
North American networking standards. These ports are accessible through the front panel
RJ-21 connector are enabled through keycodes.
• Page and auxiliary relay output on the front panel RJ-21 connector.
BCM50 main unit BCM50 expansion unit
Height 2” (5.1 cm) 2” (5.1 cm)
Width 8.5” (21.6 cm) 8.5” (21.6 cm)
Depth 12.5” (31.8 cm) 12.5” (31.8 cm)

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• Three port 10/100 Ethernet switch with auto sensing and auto polarity. Two of these ports also
support connecting optional expansion units.
• One 10/100 Ethernet port reserved for direct access management of the system
• Music on hold input supported either through front panel jack or RJ-21 connector
• USB port to enhance BCM50 management
You can extend the capacity of your system by using the optional “BCM50 Expansion Unit” on
page 9.
BCM50 Front Panel and Interfaces
Telephony Features
BCM50 comes with a full set of telephony features that can respond to the varied requirements of
your business. BCM50 supports:
• the base telephony features currently provided in BCM 3.6
• Business Series Telephones (except for Doorphone)
• analog station terminals, including phones and fax machines
IP Telephony Features
The cornerstone of convergence is IP telephony. BCM50 offers the complete range of IP
telephony features currently provided in the Business Communications Manager product line:
• G.711 and G.729 codecs
• echo cancellation
• H.323 IP trunking and MCDN over H.323
•T.38Fax
19 V DC
Power
Status
Power LED
OA&M
LAN
Port 1
Expansion Ports /
LAN 2 / LAN 3
Admin Button
(Reset)
Music In USB Analog Trunks, Digital Stations,
Analog Stations, Music on hold,
Page out, Aux Relay

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• Support for desktop clients: Nortel IP telephone portfolio including i2001, i2002, and i2004
desktop sets, and i2050 Software Phones for extending voice services to mobile and
home-based employees over the Internet
BCM50e and BCM50a: BCMs with Integrated Routers
BCM50 is available with an optional integrated ADSL or Ethernet router. These units suit the
needs of small businesses and small enterprise branch offices requiring external data networking
such as Internet access or VPN based networking to other offices.
Two variations of the BCM50 have an integrated router, depending on the WAN interface you
require: BCM50e (Ethernet WAN) and BCM50a (ADSL WAN). Both routers have these data
features:
• secure Internet access
• multi-site VoIP trunking using secure VPN tunnels
• wide-area VoIP applications with remote user support
• remote management and support
Common Features and Capabilities
BCM50a and BCM50e share the same rich set of functionality focused on secure Internet access
and VoIP.
BCM50e and BCM50a have three additional ports of Ethernet LAN switch for a total of six LAN
ports for local premises use. All Ethernet ports are 10/100 Mbps auto sensing, and support auto
polarity so no crossover cable is required to connect data hardware to the unit. An additional port
is provided for WAN access, either Ethernet or ADSL, depending on the model.

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The following features make BCM50a and BCM50e attractive for small sites who want to become
Internet-capable and multi-site enterprises with many small sites. Until now, however, they could
not be part of the corporate WAN because of the high cost of traditional WAN connectivity and
managed service:
BCM50e
The BCM50e provides call processing and data routing features, and is suitable for networks
where data routing capability using an integrated Ethernet router is required. The WAN interface
port provides 10/100 Ethernet with auto sensing and autopolarity. If you have existing or
alternative WAN access technology, you can still benefit from the VoIP features of the BCM50.
VPN
• up to five IPSec Branch Office Tunnels
(peer-to-peer)
• support for Dynamically addressed peers – ABOT
• support for Client Tunnel origination (not
termination) to simplify the connection to a larger
VPN Router network
• IKEv1 Main Mode
• IKEv1 Quick Mode
• Diffie-Hellman Group 1,2
• IPSec Tunnel Mode
• ESP
•NATTraversal
Security Services
• cryptographic services
• DES and 3DES
• data authentication SHA-1
• data authentication MD-5
• authentication services
• pre-shared secrets
• security services
• stateful firewall
• intrusion detection
NAT
• many to one, static, many to many
• port forwarding
• IPSec Pass through
• NAT support for tunnel mode IPSec tunnels
Router
• Clear text routing
• Static – through tunnel
• RIP v1 – through tunnel and clear
text
• RIP v2 – through tunnel and clear
text
IP Services
• DHCP client
• DHCP server with support for Nortel Internet
Telephones
• DNS Proxy
• DNS w / VPN client
•PPoE
• Configurable MAC address
• 5 Mbps clear text routing w/ 1500 byte packets
• 1.5 Mbps 3DES throughput w/ 1500 byte packets

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BCM50a
The BCM50a provides call processing, data routing features, and an integrated ADSL modem.
The BCM50a is a standalone “office in a box” of applications. With the BCM50a, you have
complete voice and Internet service with resulting efficiency and convenience. These features
provide a complete, integrated Communications Server/ADSL access package for ease of
interconnecting with service provider ADSL networks:
• ITU G.992.1 (G.DMT)
• G.992.1 Annex A
• ITU G.992.2 (G.Lite)
• ANSI T1.413 Issue 2
• DSL Forum document TR-042 ATM Transport over ADSL
• G.hs 994.1
• G.ploam G.997.1
• Auto negotiation rate adaptation
• RFC 2364 PPP over AAL5
• RFC 2684 Multiprotocol Encapsulation over ATM, both Bridged and Routed encapsulation
• Support for British Telecom SIN 329; BT Broadband IP Products requirements for End User
NTE equipment, where the router and ADSL modem functions are integrated into one device
• RFC 1483 “Multi-protocol over AAL5”
• RFC 2365 “PPP over AAL5”
• RFC 2516 PPoE
• Traffic shaping UBR, CBR
• ATM forum UNI 3.1 / 4.0 PVC (minimum 5 PVCs)

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BCM50 Expansion Unit
You can expand BCM50 trunk and station capacity by connecting up to two external BCM50
expansion units. Expansion ports on the BCM50 are enabled through keycodes.
The expansion unit fits easily with the BCM50, and is easy to integrate and install using the
wallmount and rackmount accessories. The expansion unit is connected to the BCM50 using an
RJ-45 CAT5 cable and uses its own external power supply, both of which are provided with the
expansion unit.
Each expansion unit is capable of supporting one Media Bay Module, the same products that are
used in the rest of the BCM product portfolio. BCM50 supports these Media Bay Modules:
• 4x16 Combo (4 analog trunks, 16 digital stations) - North America Only
• ASM8+ (8 port analog station interface) - North America Only
• CTM4 (4 port CLID trunk module) - North America Only
• CTM8 (8 port CLID trunk module) - North America Only
• DTM (digital trunk module)
• BRI (ISDN Basic Rate trunk module)
• DSM16+ (16 port digital station module)
• DSM32+ (32 port digital station module)
• GATM4 (4 port global analog trunk module)
• GATM8 (8 port global analog trunk module)
BCM50 Expansion Unit
MBM
Ejector
Expansion Port
to main unit
LAN Port
19 V
DC Power

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Mounting Kits
Businesses can have a range of physical environments in which the system must be installed.
BCM50 has optional accessories you can use to tailor the installation to the needs of the location.
Small System Wallmount Bracket
You can use this optional bracket to mount the
BCM50 and expansion unit to a vertical surface. You
attach the bracket to the surface, and hang the BCM50
from the bracket. The details on the bracket ensure
that the BCM50 securely locks into place.
The lower part of the bracket includes a covered cable
tray, allowing for organized and visually neat
management of cables. An optional add-in card is
available that mounts into the cable tray, providing
RJ-45 connections for the main unit trunk and station
interfaces.
Small System Rackmount Shelf
You can install this optional shelf in a standard 19
inch rack, and mount the BCM50 and expansion unit
on it. The details on the shelf firmly lock the BCM50
in place. The bracket also provides space to store
power supplies for the BCM50. An optional patch
panel is available to provide RJ-45 connections for
the main unit trunk and station interfaces.