The Expansion Cabinet is a cost-effective way to increase the capacity of the Business Communications Manager (BCM). Connection is via a DS256 Cable directly from the Media Services Card to the Expansion Cabinet. The Expansion Cabinet is Backwards-Compatible with earlier BCM Releases. It also contains a Cooling Fan, Redundant Power Supply, and a Hub Card.
Expansion Cabinet Features:
The BCM expansion unit contains six additional bays for MBMs
Redundant expansion unit provides redundant power supply