Installation architecture 13
Nortel Business Communications Manager 450 5.0
Installation — System
NN40170-303 02.03 Standard
August 2009
Copyright © 2009, Nortel Networks
External DHCP server available
If an external DHCP is present, the BCM450 system uses the IP configuration
supplied by the external DHCP server.
The DHCP server on the main unit must configure a range of IP addresses to
supply to the IP Phones.
The factory default DHCP server address range is set to 192.168.2.3 -
192.168.3.254. This allows for more than 500 addresses.
Use Element Manager to verify and change the default range.
The administrator must ensure that this range works with the network
configuration; the external DHCP server does not use the range.
Mounting options
You typically install the main unit and expansion cabinet in the same manner.
Ensure you install the expansion cabinets close enough to the main unit so
you can connect the supplied 5 m (16 ft) expansion cable between the
expansion cabinet and main unit.
Nortel provides three methods to install the BCM450 units:
• Rack-mount installation
• Wall-mount installation
• Desktop-mount installation
Rack-mount installation
You can install a BCM450 main unit in a standard 19-inch equipment rack
along with your other networking and telecommunications equipment. You
install the BCM450 expansion cabinet in a similar manner to the main unit.
Wall-mount installation
You can mount a BCM450 main unit or expansion cabinet on a wall. To mount
the unit on a wall, you need the following items:
• A wall-mount bracket kit NTAB3422
• Four #10 x 2.5 cm (#10 x 1 in.) round-head wood screws
• A plywood backboard 2 cm (3/4 in.) thick
To mount the expansion cabinet, you need the following items:
• A wall-mount bracket (supplied with unit)
• Two #10 x 2.5 cm (#10 x 1 in.) round-head screws
• A plywood backboard 2 cm (3/4 in.) thick