Telephone System Installation and Maintenance Guide

90 Chapter 7 Installing the main unit
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• To install the additional units beside the existing unit, repeat steps 1 to 3 for each unit.
• To install the additional units on top of the existing unit, refer to “To install a BCM50 unit
on top of another unit” on page 83.
5 Install the power supply next to the BCM50 unit.
The power supply must be within 1.5 m (5 feet) of the BCM50 unit and within 1.5 m
(5 feet) of the ac power outlet (wall outlet or UPS).
6 Repeat step 5 for each power supply.
Next step
If you are installing an expansion unit, proceed to “Installing an expansion unit” on page 91.
Otherwise, proceed to “Connecting the cables to the BCM50 system” on page 97.