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Glossary
Channel
»
In the horizontal cabling portion of a
structured cabling system, the channel contains
all of the elements of the permanent link, plus the
equipment cords at the horizontal cross-connect
(HC) and the patch cords in the work area.
Channel-rated
»
Category-rated structured cabling
components are said to be channel-rated if, when
installed as a system in an industry-defined channel, they
meet all of the transmission and noise characteristics
defined in the standard. Compare with Component-rated.
Compliance
»
A wiring device that meets all
characteristics of a standard is said to be in
compliance with that standard.
Component-rated
»
Category-rated structured cabling
components are said to be component-rated if they
exceed all of the transmission and noise characteristics
defined in the standard for an individual structured
cabling component. Component specifications are
more stringent than channel specifications and may
provide greater permanent link and channel test
margins. Compare with Channel-rated.
Conductor
»
Any substance, usually a wire or cable,
that can carry an electrical current.
Connecting Block
»
Also called a terminal block,
punch-down block, quick-connect block, or cross-
connect block, this plastic block contains metal
wiring terminals to establish connections from one
group of wires to another. Usually each wire can
be connected to several other wires in a bus or
common arrangement. There are several types of
connecting blocks: 66, 110, etc.
Connector
»
A device that connects wires or
fibers in cable to equipment or other wires or
fibers. Wire and optical connectors most often
join transmission media to equipment or cross
connects. Connectors are sometimes referred to
as jacks; but although all jacks are connectors,
not all connectors are jacks.
Consolidation Point
»
An optional location between
an ER or TR and the workstation for interconnection
of horizontal cables.
Data Center
(DC)
»
A data center is a facility used
for housing a large amount of electronic equipment,
typically servers, computers, data storage devices,
and communications equipment. Data centers are
designed to assure that the equipment and data
housed in them are protected from environmental
hazards and security breaches. Data centers can be
private, serving a single company, or a public “utility”
serving a variety of companies.
dB
(decibel)
»
A dB is a unit of measure of signal
strength, usually the relationship between a
transmitted signal and a standard signal source.
Every 3dB equals 50% of signal strength, so
therefore a 6dB loss is a loss of 75% of total
signal strength.
EF
(entrance facility)
»
An entrance to a building
for both public and private network service cables
(including wireless) including the entrance point
of the building and continuing to the entrance room
or space.
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Glossary
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