3Com OfficeConnect 3CRWDR200A-75, Руководство пользователя

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Changes or modifications not expressly approved by 3Com could void
the user’s authority to operate this equipment.
REN (Ringer Equivalent Numbers) Statement
'
'NOTICE:
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 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 5.''
Attachment Limitations Statement
''Notice:
This equipment meets telecommunications network protective,
operational and safety requirements as prescribed in the appropriate
Terminal Equipment Technical Requirements document(s). This is
confirmed by marking the equipment with the Industry Canada
certification number. 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. 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 coordinated by a representative
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
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.''