102 Chapter 9 Connecting the cables to the BCM50 system
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5 Rotate the retention clip so that it locks the power supply cord in place.
6 Plug one end of the power supply cable into the power supply.
7 Plug the other end of the power supply cable into the ac power source (wall outlet).
8 Repeat steps 1 to 6 for each BCM50 unit.
9 Proceed to “Connecting the lines and extensions”.
Connecting the lines and extensions
The telephone lines and extensions connect to the BCM50 system through an RJ-21 telephony
connector on the front of the main unit and to the connectors on the MBM installed in the
expansion units.
You can also use the optional wiring field card (WFC) to simplify the connection of the lines and
extensions to the RJ-21 telephony connector in a wallmount or deskmount installation. For
rackmount installations you can use the optional rackmount patch panel.
Refer to the following sections for information on connecting lines and extensions:
• “Wiring warnings” on page 103
• “Connecting lines and extensions to the RJ-21 telephony connector” on page 104
• “Connecting telephone lines to the expansion units” on page 105
• “Connecting extensions to the expansion units” on page 106
• “To connect the cables to the wiring field card (optional)” on page 111
Note: Use only the power supply that is approved by Nortel for use with the BCM50
units.
Warning: Leakage currents
You must reconnect the power cords to a grounded outlet before reconnecting the
telephony and data networking cables.
