Panasonic KX-TD816 Installation Manual page 67

Outside Installation Diagram
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.
Protectors
CO
CO
Ter-
minal
Board
EXTN
TEL
Note
The lighting protector for an extension is different from that for outside line.
General Installation
(Main Building)
CO
Main
Unit
EXTN
EXTN
TEL
(Another Building)
SLT
PT
EXTN
Lightning
Protector
Ground
2.3 Connection
67