Specifications

signals.
Laser
A device that transmits an extremely narrow and coherent beam
of electromagnetic energy in the visible light spectrum. Used as a
light source for fiber optic transmission (generally more expensive,
shorter lived, single mode only, for greater distances than LED).
Multiplexer
At one end of a communications link, a device that combines
several lower speed transmission channels into a single high speed
channel. A multiplexer at the other end reverses the process.
Sometimes called a mux. See Bit Interleaving/Multiplexing.
Network
(1) An interconnected group of nodes. (2) A series of points,
nodes, or stations connected by communications channels; the
collection of equipment through which connections are made
between data stations.
Port
The physical interface to a computer or multiplexer, for connection
of terminals and modems.
Single Mode
Describing an optical wave-guide or fiber that is designed to
propagate light of only a single wavelength (typically 5-10 microns
in diameter).
T1
A digital transmission link with a capacity of 1.544 Mbps used in
North America. Typically channelized into 24 DS0s, each capable of
carrying a single voice conversation or data stream. Uses two pairs
of twisted pair wires.