Getting Started 17
4. Affix the PBX to the screw heads.
Notes
• Do not block the openings of the cabinet. Leave at least 20 cm of space above and 10 cm
to the sides of the PBX for ventilation.
• Make sure that the wall behind the cabinet is flat and free of obstacles, so that the openings
on the back of the cabinet will not be blocked.
• Be careful not to drop the cabinet.
2.7 Connecting Frame Earth

IMPORTANT

Connect the frame of the PBX to earth.
1. Loosen the screw.
2. Insert an earthing wire (user-supplied)*.
3. Tighten the screw.
4. Connect the earthing wire to earth.
*Use an earthing wire that has a conductor with a cross-sectional area of at least 0.75 mm2 or 18
AWG. Green-and-yellow insulation is required.
Screw
To earth
Earthing wire