Panasonic ADVANCED HYBRID KX-TEA308 Getting Started page 18

• Be sure to comply with all applicable laws, regulations, and guidelines.
• Proper earthing is very important to protect the PBX from external noise and to reduce the risk
of electrocution in the event of a lightning strike.
• The AC cable's earthing pin may not be enough to protect the PBX from external noise and
lightning strikes. A permanent connection must be made between earth and the earth terminal
of the main unit.
18 Getting Started