6 PrefaceGeneral safety precautionsThis equipment has been designed to the highest quality standards of materials,workmanship and safety. Do not bypass any of the safety features of this equipmentor operate this equipment in an improper environment.WARNING!To avoid hazard from electrical shock and/or fire, adhere to the safetypractices listed in this section and identified within the instructions ofthis document.Use caution when installing or modifying communication lines. Dangerous voltagesmay be present. It is unsafe to install wiring during a lightning storm.Always disconnect all communication lines at the network interface and powerconnections from the wall outlets before servicing or disassembling this equipment.All wiring external to the product(s) should follow the provisions of the currentlocal and national building codes or any wiring rules that apply.The equipment should be installed near the electrical outlet and be easily accessible.WARNING!Potentially hazardous voltages inside. Service should be performedonly by qualified personnel.ADVERTISSEMENT!:Tensions Dangereuses à l'intérieur. Confier la maintenance à unepersonne qualifiée.WARNING!This equipment is electrically grounded only when it is connected to agrounded AC power outlet using the supplied AC–DC power adapter.