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Installation
2.2.4 Frame Ground Connection
IMPORTANT!!!
Connect the frame of the main
unit to the ground.
1.
Loosen the screw.
2.
Insert the grounding wire
(user-supplied).
3.
Tighten the screw.
4.
Connect the grounding wire
to ground.
• The proper grounding (connection to the earth ground) is very important to protect the
system from the bad effect of external noise or to reduce the electric shock of a lightning
strike.
• The GND pin of the 3-pin type AC cable has an effect against the external noise or the
lightning strikes, but it may not be enough to protect the system. A complete connection of
the GND terminal of the PBX system to the earth ground is strongly recommended.
28
To ground
Screw
Installation Manual
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