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Safety Precautions
The device must be installed and serviced only by qualified service personnel.
The device is considered as IPX0 non-water ingress protected and therefore, must be installed only
indoors.
Do not expose the device to water or moisture.
Ethernet cabling must be shielded and routed only indoors, and must not exit the building.
Do not open or disassemble this device. The device carries high voltage and contact with internal
components may expose you to electrical shock and bodily harm.
Make sure the device is installed in a well-ventilated location to avoid over heating of internal
components and subsequent damage.
Do not place any object on top of the device and make sure that sufficient clearance from the top and
sides are maintained to ensure proper airflow to avoid over heating of internal components.
Operate the device in an ambient temperature (Tma) that does not exceed 40°C (104°F).
The device must be installed only in restricted access locations that are compliant with ETS 300 253
guidelines where equipotential bonding has been implemented.
The device includes an integrated secondary surge protection, but does not provide primary telecom
protection! When the FXS telephone lines are routed outside the building, additional protection -
usually a 350V three-electrode Gas Discharge Tube (GDT) as described in ITU-T K.44 - must be provided
at the entry point of the telecom wires into the building (usually on the main distribution frame / MDF),
in conjunction with proper grounding. The center pin of the GDT (MDF grounding bar) must be
connected to the equipotential grounding bus bar of the Telecommunication room.
Operate the device only from the type of power source indicated on the chassis.
Installation of the device must be in accordance with national electrical codes and conform to local
regulations.
AC power: Use only the supplied AC power cord for connection to the AC power source.
AC power: The device must be connected to an electrical socket-outlet providing a protective earthing
connection.
AC power: If you are using both Power Supply modules, connect each one to a different AC power
supply source. The two AC power sources must have the same ground potential.
DC power: Connect the device to a safety extra-low voltage (SELV) source that is sufficiently isolated
from the mains.
DC power: Connection of the device to the DC mains power must be done only by a certified electrician
and in accordance with local national electrical regulations.
DC power: Both Power Supply modules must be connected. Ensure that you connect each one to a
different DC power supply source.
DC power: The two DC power sources must have the same ground potential.
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