Media bay modules – Nortel Networks BCM50 User Manual
Page 40
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Chapter 2 Introducing the BCM50 hardware
NN40020-302
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.
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)
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.
Note: To determine which media bay modules and which types of trunk lines are
available in your location, see
Signaling, media, and
power connector
Signaling, media, and
power connector
Cooling fan