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Installing the 10-Basic Telephone Module
WARNING: Before removing or inserting modules in the control unit
or expansion unit, be sure to turn the power switches to the off posi-
tion in both units.
This module can be mounted in slots labeled 10 or 11 in the control unit or
slots labeled 21, 22, 23 or 24 in the expansion unit. The slot labeled 9 in
the control unit must be equipped with a Voice Terminal Module. (If you use
the slot labeled 24, you will also need an additional power supply.)
1. Remove the front panel of the control unit or expansion unit.
2. Locate the leftmost unoccupied slot that is color-coded blue (except slot
9) on the control unit’s or expansion unit’s label.
3. Remove the protective cover from the slot by pressing down on the rib
at its top with the tip of a screwdriver and pulling out the bottom of the
cover (Figure 2).
Figure 2
Removing the Protective Cover (Typical)
2