2.6 Connecting Extensions
Getting Started 15
2.6 Connecting Extensions
2.7 Frame Earth Connection
IMPORTANT
Connect the frame of the Hybrid IP-PBX to earth.
• Proper earthing (connection to earth) is very important to protect the Hybrid IP-PBX from the bad
effects of external noise or to reduce the risk to the user of electrocution in the case of a lightning
strike.
• The earthing wire of the AC cable has an effect against external noise and lightning strikes, but
it may not be enough to protect the Hybrid IP-PBX. A permanent connection between earth and
the earth terminal of the Hybrid IP-PBX must be made.
1. Loosen the screw.
2. Insert an earthing wire (user-supplied)*.
3. Tighten the screw.
4. Connect the earthing wire to earth.
* For earthing wire, green-and-yellow insulation is required, and the cross-sectional area of the
conductor must be more than 0.75 mm
2
or 18 AWG.
To extension card
RJ11
Example: KX-T7600 Series DPT
DPT and DSS Console
KX-T7000 Series SLT
Pin Assignments
H L
T R
APT
HTRL
TO MAIN UNIT
/ PABX
H L
Screw
Earthing
wire
To earth
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