General Installation28 Installation Manual2.1 Before Installation2.1.1 Before InstallationPlease read the following notes concerning installation and connection before installing thesystem and terminal equipment.Safety Installation InstructionsWhen installing telephone wiring, basic safety precautions should always be followed toreduce the risk of fire, electric shock and injury to persons, including the following:a) Never install telephone wiring during a lightning storm.b) Never install telephone jacks in wet locations unless the jack is specifically designed forwet locations.c) Never touch uninsulated telephone wires or terminals unless the telephone line has beendisconnected at the network interface.d) Use caution when installing or modifying telephone lines.Installation PrecautionsThis system is designed for wall mounting only. Avoid installing in the following places.(Doing so may result in malfunction, noise, or discoloration.)a) In direct sunlight and hot, cold, or humid places. (Temperature range: 0 °C – 40 °C / 32°F – 104 °F)b) Sulfuric gases produced in areas where there are thermal springs, etc. may damage theequipment or contacts.c) Places in which shocks or vibrations are frequent or strong.d) Dusty places, or places where water or oil may come into contact with the system.e) Near high-frequency generating devices such as sewing machines or electric welders.f) On or near computers, telexes, or other office equipment, as well as microwave ovens orair conditioners. (It is preferable not to install the system in the same room with theabove equipment.)g) Install at least 1.8 m (6 feet) away from radios and televisions. (Both the system andPanasonic proprietary telephones)h) Do not obstruct area around the system (for reasons of maintenance and inspection —be especially careful to allow space for cooling above and at the sides of the system).Wiring PrecautionsBe sure to follow these instructions when wiring the unit:a) To assure good quality telephone connection, it is recommended new and modificationsto existing installation of customer premise wiring shall use solid twisted pair copper