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NEC ST4 User Manual page 3

Single line telephone

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ST4 Without Message Waiting Lamp:
Notice
The Canadian Department of Communications label identifies certified equipment. This
certification means that the equipment meets certain telecommunications network pro-
tective, operational and safety requirements. The Department does not guarantee the
equipment will operate to the user's satisfaction.
Before installing 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, asso-
ciated with a single line individual service, may by extended by means of a certified connec-
tor 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 maintenance
facility designated by the supplier. Do not attempt to make any repairs on your own. For
information, please contact your dealer.Any repairs or alterations made by the user to
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.
Users should not attempt to make such connections themselves, but should con-
tact the appropriate electric inspection authority, or electrician, as appropriate.
Ringer Equivalence Number (REN)
The Ringer Equivalence Number (REN) assigned to each terminal device provides an
indication of the maximum number of terminals allowed to be connected to a telephone
interface. The termination of an interface may consist of any combination of devices
subject only to the requirement that sum of the Ringer Equivalence Numbers of all
devices does not exceed 5.
ST4 With Message Waiting Lamp:
In addition to the information above,
The ST4 telephone is to be connected to the analog station port of a host system.
The telephone is not to be connected directly to the telephone network.
Industry Science Canada Note
CAUTION:

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