Cisco SPA232D Quick Start Manual page 13

To mount the unit to the wall:
Determine where you want to mount the unit. Verify that the surface
S 1
TEP
is smooth, flat, dry, and sturdy.
Drill two pilot holes into the surface 58 mm apart (about 2.28 in.).
S 2
TEP
Make sure that the holes are at the same height above the floor so
that the unit is level and secure in either of its two safety-certified
orientations.
Insert a screw into each hole, leaving a gap of 5 mm (0. 1 968 in.)
S 3
TEP
between the underside of each screw head and the surface of the
wall.
Place the unit wall-mount slots over the screws and slide the unit
S 4
TEP
down until the screws fit snugly into the wall-mount slots.
Cisco SPA232D Quick Start Guide 13