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Glossary
Ethernet
»
Leading local area network (LAN)
protocol used for connecting computers, printers,
workstations, terminals, etc. within the same
building. Ethernet is a physical link and data link
protocol that operates over twisted pair wire.
See IEEE 802.3x.
ETL
(Edison Testing Laboratories)
»
An independent
testing, inspection and certification laboratory
owned by Intertek that provides electrical safety,
electromagnetic compatibility, benchmark and
performance testing. In addition, ETL issues two
product safety marks: “listed” and “verified”.
ER
(equipment room)
»
is a centralized space
that houses telecommunications equipment. ERs
generally serve an entire building or campus, while
TRs (telecommunication rooms) serve one floor of
a building or a portion of a floor. An ER may contain
active equipment, cross-connect equipment, and
building systems (e.g. life safety, security, electrical
and HVAC).
FCC
(Federal Communications Commission)
»
The
FCC is an independent United States government
agency. It was established by the Communications
Act of 1934 and is charged with regulating
interstate and international communications by
radio, television, wire, satellite and cable. The FCC’s
jurisdiction covers the 50 states, the District of
Columbia, and U.S. possessions.
FTP
(foiled twisted pair)
»
Balanced twisted pair
cable with an overall foil shield and drain wire. Also
called screened twisted pair (ScTP) cable.
F/UTP
(foiled screened with unshielded twisted
pairs)
»
Overall shielded cable with no shield on
individual twisted pairs.
Gain
»
An increase in signaling power when
an electric device boosts the signal; measured
in decibels (dB).
Gigabit
»
When used to describe data transfer
rates, Gigabit refers to 10 to the 9th power
(1,000,000,000) bits. Gigabit Ethernet, abbreviated
GbE, supports data transfer rates of 1 Gigabit
(1,000 megabits) per second. The first Gigabit
Ethernet standard (802.3z) was ratified by the IEEE
802.3 Committee in 1998.
HC
(horizontal cross-connect)
»
The HC is a location
for the cross-connect of horizontal cabling to other
cabling and equipment.
HDBaseT
»
A standard created by the HDBaseT
alliance for delivering video, audio, power, Ethernet,
USB and control signals over category-rated twisted
pair copper cable.
IC
(intermediate cross-connect)
»
The IC is a
cross-connect point located between the MC
(main cross-connect) and the HC in interbuilding
backbone cabling.
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