ADTRAN 1200103L2, Руководство пользователя

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Table of Contents
CANADIAN EQUIPMENT LIMITATIONS
The Industry Canada Certification label identifies certified
equipment. This certification means that the equipment meets
certain telecommunications network protective, operational,
and safety requirements. The Department does not guarantee
the equipment will operate to the user's satisfaction.
Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The equipment
must also be installed using an acceptable method of connection. In some cases, the
company's inside wiring associated with a single line individual service may be
extended by means of a certified connector assembly (telephone extension cord). The
customer should be aware that compliance with the above conditions may not
prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian mainte-
nance facility designated by the supplier. Any repairs or 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 waterpipe system, if
present, are connected together. This precaution may be particularly important in
rural areas.
Users should not attempt to make such connections themselves,
but should contact the appropriate electric inspection author-
ity, or an electrician, as appropriate.
The Load Number (LN) assigned to each terminal device denotes the percentage of
the total load to be connected to a telephone loop which is used by the device, to
prevent overloading. The termination on a loop may consist of any combination of
devices subject only to the equipment that the total of the LNs of all devices does not
exceed 100.
The ringer equivalence number (REN) assigned to each terminal adapter is used to
determine the total number of devices that may be connected to each circuit. The sum
of the RENs from all devices in the circuit should not exceed a total of 5.0.