Media Bay Modules - Nortel BCM50 Installation And Maintenance Manual

To connect an MBM to the BCM50 system, you must install the MBM in the expansion unit, then
connect the expansion unit to the main unit. See
more information on installing a expansion unit.
Warning: Make sure the power supply to the expansion unit is disconnected
before inserting or removing a media bay module (MBM).
The supplied Ethernet cable (shielded) connects the expansion port on the expansion unit to one of
the two expansion ports on the BCM50 main unit (see
buses 5/6 (port2), while expansion unit 2 is mapped to buses 7/8 (port 3).
Figure 5 Expansion unit and expansion connectors
Expansion unit 1
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 up, while the LEDs on the main unit port go
out.
Note: Keycodes are required for the expansion ports to function. If you purchase a
keycode 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 system.
Chapter 2 Introducing the BCM50 hardware
"Installing an expansion unit" on page 91
Main unit
Buses 7/8
Buses 5/6
Figure 5). Expansion unit 1 is mapped to
Expansion unit 2
BCM50 Installation and Maintenance Guide
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for