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Cable Routing for LAN Systems
•
Invisible laser radiation can occur when the connectors are open. Avoid direct eye
exposure to the beam when optical connections are unplugged.
•
Never alter, modify, or change an optical device in any way other than suggested in
this document.
Cable Routing for LAN Systems
Extreme Networks equipment meets the requirements for LAN system equipment.
LAN systems are designed for intra-building installations; that is, cable runs between
devices must be in the same building as the connected units, except under the
conditions listed in the next paragraph.
As allowed in the USA by the National Electrical Code (NEC), this equipment can be
connected between buildings if any one of the following conditions is true:
•
Cable runs between buildings are less than 140 feet long.
•
Cable runs between buildings are directly buried.
•
Cable runs between buildings are in an underground conduit, where a continuous
metallic cable shield or a continuous metallic conduit containing the cable is
bonded to each building grounding electrode system.
Caution
Failure to follow these requirements for cable routing conditions may expose
the user to electrical shock and expose the unit to damage that can cause
errors.
Warning
The Ethernet ports of the equipment and its sub-assemblies are suitable only
for intra-building connections (within the same building) or for connections to
unexposed wiring or cabling. (See the conditions listed above.) The Ethernet
ports of this equipment or its sub-assemblies must not be metallically
connected to interfaces that connect to the outside plant (OSP) or its wiring.
Ethernet interfaces are designed for use only as intra-building interfaces
(described as Type 2 or Type 4 ports in GR-1089-CORE, Issue 6) and require
isolation from the exposed OSP wiring. The addition of Primary Protectors is
not sufficient protection to connect these interfaces metallically to OSP wiring.
This warning does not apply to T1/E1 ports because T1/E1 ports have built-in
isolation and surge protection that allows them to be connected to OSP wiring.
Install Power Supply Units and Connect Power
For the ratings and power input requirements of each power supply unit, see "Technical
Specifications" or the data sheet for the power supply at www.extremenetworks.com.
Warning
Be sure to satisfy the requirements listed in this section when you install
Extreme Networks power supplies or connect power.
94
Extreme 7720 Hardware Installation Guide
Safety Information
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