User's Manual

14 Chapter 2 System overview
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Figure 2 BCM400 main unit ports and connectors
BCM expansion unit (BCM400 only)
The BCM400 system can have one BCM expansion unit that contains six additional bays for
media bay modules (MBMs). The BCM expansion unit is not compatible with the BCM200
system.
The supplied DS256 cable is 5 m (16 ft.) long and connects into a DS256 port on the main unit,
and into a DS256 port on the center panel of the expansion unit (see Figure 3). Use of any other
cable is not supported.
Figure 3 BCM expansion unit DS256 port location
Note: The number of MBMs that can be installed is determined by the number of DS30
buses required by the MBMs and the number of buses available. It is not dependent on the
number of physical MBM bays available.
Primary Mirror
Master
Alarm Reset
Media services card
(MSC)
Ethernet
port 2
Ethernet
port 1
USB ports
WAN card (optional - North
America version shown)
DS256 port
Note: Your system may not have all the cards indicated.
RJ-48C WAN T1
DB26 connector
(female) WAN
Auxiliary
ringer
Page
relay
Page
output
Music on hold
input
COM port
(serial port)
Modem port
(North America only)
4 MBM
bays
DS256 port
MBMsMBMs