Telephone Systems and IP Telephone Solutions at PSICOMPANY.COM
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Telephone, Telephone Systems,
Digital Telephone
Wired Telephone System
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The telephone (from the
Greek words tele (τηλέ) = far and phone (φωνή) = voice) is a
telecommunications device that is used to
transmit
and receive sound
(most commonly
speech),
usually two people conversing but occasionally three or more. It is one of the
most common household appliances in the world today. Most telephones operate
through transmission of
electric signals over a complex
telephone network which allows almost any phone user to communicate with
almost anyone.
A traditional landline telephone system, also known as
"plain old telephone service" (POTS), commonly handles both signaling and
audio information on the same
twisted
pair of insulated wires: the
telephone line. Although originally designed for voice communication, the
system has been adapted for data communication such as
Telex,
Fax and
Internet
communication. The signaling equipment consists of a bell, beeper, light or
other device to alert the user to incoming calls, and number buttons or a rotary
dial to enter a
telephone number for outgoing calls.
A private automatic branch exchange (PABX) is a
telephone exchange that serves a particular business or office, as
opposed to one that a
common carrier or telephone company operates for many businesses or
for the general public. PBXs are also referred to as:
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More Data and
Information on PABX |
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