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Chapter 2 Telephony hardware 71
Installation and Maintenance Guide
Power connections
The back of the modules have a single connector that provides a DS256 channel and power to the
module. These connectors plug into the back of the media bay on the BCM1000 or BCM1000e.
Some modules also have a cooling fan that runs off the module power source. Figure 16 shows the
rear views of the two types of modules.
Figure 16 Rear of modules showing DS256 channel and power connectors
Warning: Media bay module wire shorts
The wires that connect the media bay module daughter board to the module can become
pinched between the module and the BCM1000 media bay if you insert the modules off
the straight or with too much force. This will cause a short in the equipment and could stop
the Business Communications Manager from restarting.
Note: Some of the new modules, such as the DECT module, do not have this wiring
configuration. However, inserting the module carefully and correctly is still important to
securely connect the power connector on the module to the backplane of the media bay.
DS256 and power
connector
DS256 and
power connector
Cooling fan
Module wires are vul-
nerable to breakage.
See Warning below.