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Preface
Safety Information
This manual should be read in its entirety and all procedures completely understood before
installing or operating the unit. The notes that appear throughout this manual must be read prior to
any installation or operating procedure. Examples of notes used in this manual are shown below.
Note
A note provides essential operating information not readily apparent which you should be
particularly aware of. A note is typically used as a suggestion.
Important
Indicates an emphasized note. It is something you should be particularly aware of;
something not readily apparent. Important is typically used to prevent equipment damage.
The CAUTION, WARNING, and DANGER statements that appear throughout this manual are
intended to provide critical information for the safety of both the service engineer and operator.
These statements also enhance equipment reliability. The following definitions and symbols for
CAUTION, WARNING, and DANGER as they are used in this manual comply with ANSI Z535.2,
American National Standard for Environmental and Facility Safety Signs, and ANSI Z535.4,
Product Safety Signs and Labels, issued by the American National Standards Institute.
CAUTION
minor to moderate injury. It may also be used to alert against unsafe practices.
WARNING
in death or serious injury.
DANGER
death or serious injury.
Safety Guidelines
Always use the following guidelines when unsafe conditions exist or when potentially hazardous
voltages are present:
•
Always use caution and common sense.
•
Repairs must be performed by qualified service personnel only.
•
To reduce the risk of electrical shock, do not operate equipment with the cover removed.
•
Never install telephone jacks in a wet location unless the jack is designed for that location.
•
Never touch uninsulated telephone wires or terminals unless the telephone line is
disconnected at the network interface.
•
Never install telephone wiring during an electrical storm.
ii
Indicates a potentially hazardous situation which, if not avoided, may result in
indicates an imminently hazardous situation which, if not avoided, could result
indicates an imminently hazardous situation which, if not avoided, will result in
SpectraComm 553 Fractional T1 DSU
Installation and Operation Manual
076R155-000
Issue 7
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