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Requirements
Model Numbers and FCC Information
Compatibility
of the Telephone Network and
Terminal Equipment
The Telephone Company sharn make changes in its communication
fa&ities,
equipment,
operations or procedures, where such action is reasonably
required in the operation of its business and is not inconsistent with the rules
and regulations in F.C.C. Part 68. If such changes can be reasonably expected
to render any customer Terminal Equipment incompatible with Telephone
Company communications
Facilities, or other wise materially affect its use or
performance,
the customer shall be given adequate notice in writing, to allow
the customer an oppommity
to maintain uninterrupted
service.
REN Explanation
The REN is useful to determine the quantity of devices your may connect to
your telephone lien and still have all of those device ring when your
telephone number is called. In most, but not all areas, the sum of the REN's
of all devices connected to one line should not exceed five (5.0). To be certain
of the number of devices that you may connect to our line, as determined by
the REN, you should contact your local telephone company to determine the
maximum REN for your calling area.
Environmental Requirements
Temperature: The
environment
should be free from excessive temperatures
in order to avoid component damage. Room temperatures should be 32 to
104' F (0 to 40" C).
Humidity: The
environmknt
should_ be free from excessive humidity, which
may rust metallic parts and degrade performance.
Do not install the system
where humidity could condense on its surfaces. Relative humidity ranges
should be between 30 and 90 percent,
Ventilation:
Adequate ventilation must be provided to allow upward air
circulation through the cabinet grille.
Gas and airborne particles:
To avoid corrosion or oxidation of electrical
contacts, the environment
should be free from airborne particles and
corrosive gas.
Eledrical
noise: The environment
should be free from excessive electrical
noise, which could disturb the operation of digital circuits. The system should
& located at least 10 ft. (3 m) away from welders, dimmers, or other high-
current machines. Phones connected to the system should not be located near
fluorescent
lamps, air conditioners,
washing machines, TVs, or radios.
Vibration: The
environment
should be free from excessive vibration, which
could loosen components.
Water Exposure:
Because the DBS
824
is an electric device, exposure td
water is dangerous. Do not place anything containing water on the system. Do
Issued 3/l /95
DBS 824-l O-300
1-3
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