1.2SAFETY WHEN WORKING WITH ELECTRICITY
•Do not open the device when the power cord is con- nected. For systems without a power switch and without an external power adapter, line voltages are present within the device when the power cord is connected.
•For devices with an external power adapter, the power adapter shall be a listed Limited Power Source The mains outlet that is utilized to power the device shall be within 10 feet (3 meters) of the device, shall be easily accessible, and protected by a circuit breaker in compliance with local regu- latory requirements.
•For AC powered devices, ensure that the power cable used meets all applicable standards for the country in which it is to be installed.
•For AC powered devices which have 3 conductor power plugs (L1, L2 & GND or Hot, Neutral & Safety/Protective Ground), the wall outlet (or
WARNING
socket) must have an earth ground.
•For DC powered devices, ensure that the intercon- necting cables are rated for proper voltage, cur- rent, anticipated temperature, flammability, and mechanical serviceability.
•WAN, LAN & PSTN ports (connections) may have hazardous voltages present regardless of whether the device is powered ON or OFF. PSTN relates to interfaces such as telephone lines, FXS, FXO, DSL, xDSL, T1, E1, ISDN, Voice, etc. These are known as “hazardous network voltages” and to avoid electric shock use caution when working near these ports. When disconnecting cables for these ports, detach the far end connection first.
•Do not work on the device or connect or disconnect cables during periods of lightning activity.
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