Chapter 2 Telephony hardware 35

Installation and Maintenance Guide
Power connections

The back of the modules have a single connector that provides a DS256 connector 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

13 shows the rear views of the two types of modules.

Figure 13 Rear of modules showing DS256 and power connectors

*Red LED
On Power converter
failure. Power to
telephones may not
be within spec.
(check base unit
LEDs for possible
power issue or
replace module)
N/A
Flashing
N/A Loss of DS256 clock, or
DS256 cable may be
disconnected.
* Not all modules have red LEDs
LED state Power Status
DS256 and power
connector
DS256 and
power connector
Cooling fan
Module wires are vul-
nerable to breakage.
See Warning below.