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Glossary
function - a specific purpose of an entity, or its characteristic action. In computer
programming, a synonym for procedure.
FXS - Foreign Exchange Subscriber. An analog interface for direct connection of a
telephone set to a digital multiplexer.
G
GMT - Greenwich Mean Time. Mean solar time of the meridian at Greenwich,
England, used as the basis for standard time throughout the world.
ground start - a type of start signaling on a subscriber's trunks in which the ring
(minus side) is grounded (ground start) to get dial tone.
GUI - Graphical User Interface.
H
hard disk - a sealed mass storage unit used for storing large amounts of data.
hardware - a term used to describe the physical components of a machine,
particularly computer equipment, and devices containing logic elements used in
data processing or communication equipment.
Hertz - cycles per second. Abbreviated as Hz.
http or HTTP - Hypertext Transfer Protocol. The Internet protocol used to manage
communications between Web clients (browsers) and servers.
Hunt group - see Workgroups.
Hz - see definition for Hertz.
I
Impedance - occurs when power or signal is transferred from one circuit to another.
This is known as the resistance of electrical current to alternating current and it is
measured in OHMs.
IMAP4 - Internet Message Access Protocol - Version 4.
interface - the interconnections between two separate systems or pieces of
equipment.
ISA - Industry Standard Architecture.
ISO - International Standards Organization.
ISP - Internet Service Provider.
AltiWare OE System Administration Manual 209
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