Rev. 11/10/00
53
high speed data
Data transmissions speeds at or above
56 kbps.
impedance
The total passive opposition to
alternating current flow.
inductance
An electrical characteristic, measured
in henrys that opposes any changes in
current flow.
inductive amplifier
A device that senses and amplifies
line current by use of a probe.
ISDN
Integrated Services Digital Network.
A network architecture that enables
end-to-end digital connections.
junction box
A box where wires inside are
connected to each other.
kbps
Kilobits per second.
kick-meter
A test meter’s needle pulse that is
caused by a sudden change in a
wire’s capacitive charge. Also,
meter-kick.
LAN
Local area network. A private
network that offers high-speed digital
communication channels to connect
computers and peripherals in a
limited area.
leakage
A loss of energy when an electrical
current travels to a path other than its
intended one.
manhole
A utility access hole large enough to
provide access to an underground
vault to install, splice, or repair cables
between conduit runs.
.
Mbps
Megabits per second.
megabit
One million bits.
megabyte
One million bytes.
megahertz
One million hertz.
modem
A device that converts digital signals
to and from analog signals for
transmission over conventional
analog telephone lines.
nanosecond
One-billionth of a second.
narrowband
A 4 kHz voice communications
channel that often results in poor
signal transmission.
node
Any network branch terminal or any
terminal common to multiple
branches in a network.
null
A minimum or zero amount.
ohm
The unit of measure for electrical
resistance.
open
The break in a wire or connection.
open (clean)
A open pair without any other faults.
open (dirty)
An open pair that has another fault.
