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2.2 Installation of the Hybrid IP-PBX
Installation Manual 51
Outside Installation
If you install an extension outside of the main building, the following precautions are
recommended:
a. Install the extension wire underground.
b. Use a conduit to protect the wire.
Note
The lightning protector for an extension and CS is different from that for trunks.
Installation of an Earth Rod
CSSLT PT
(Main Building)
Trunk
Trunk
Extn.
Extn.
Extn.: Extension Line
Earth
(Another Building)
Extn.
Extn.
Lightning Protectors
Terminal
Board
Lightning
Protector
SLT
PT
Hybrid
IP-PBX
CS
Trunk
Hybrid
IP-PBX
Earthing
Wire
Earth Rod
(Underground)
Lightning Protector