Installation 2-32.1 Before Installation4. Please use one pair telephone wire for extension connection of (telephone) equipmentsuch as single line telephones, data terminals, answering machines, computers, voiceprocessing systems, etc., except Panasonic proprietary telephones (e.g. KX-T7130).5. Unplug the system during wiring. After all of the wiring is completed, plug in thesystem.6. Mis-wiring may cause the system to operate improperly. Refer to Section 6.1 “WhileInstalling” and Section 6.2 “While Connecting”.7. If an extension does not operate properly, disconnect the telephone from the extensionline and then connect again, or turn off the Power Switch of the system and then onagain.8. The system is equipped with a 3-wire grounding type plug. This is a safety feature. Ifyou are unable to insert the plug into the outlet, contact your electrician to replace yourobsolete outlet. Do not defeat the purpose of the grounding-type plug.9. Exchange lines should be installed with lightning protectors. For details, refer to Section2.7 “Exchange Line Connection”, Installing Lightning Protectors.POWERSide ViewWarning: Static sensitive connectorsWarning:Static sensitive devicesare used. To protectprinted circuit boardsfrom static electricity, donot touch connectorsindicated to the left. Todischarge body static,touch ground or wear agrounding strap.