Lenovo N500 Notebook - Manuel (Page 19)

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Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs of alterations
made by the user to this equipment, or equipment malfunctions, may give
the telecommunications company cause to request the user to disconnect
the equipment.
Users should ensure for their own protection that the electrical ground
connections of the power utility, telephone lines and internal metallic
water pipe system, if present, are connected together. This precaution
may be particularly important in rural areas.
Caution: Users should not attempt to make such connections
themselves, but should contact the appropriate electric
inspection authority, or electrician, as appropriate.
The Ringer Equivalence Number (REN) for the terminal equipment
RD02-D450 is 0.1. The REN assigned to each terminal equipment
provides an indication of the maximum number of terminals allowed
to be connected to a telephone interface. The termination on an
interface may consist of any combination of devices subject only to the
requirement that the sum of the Ringer Equivalence Numbers of all the
devices does not exceed five.
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