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ADSL
ADSL is short for
asymmetric digital subscriber line, this
is a new technology that allows more
data to be moved over existing copper
telephone lines. ADSL supports date
rates from 1.5 to 9 Mbps when receiving
data which is called the downstream rate
and from 16 to 640 Kbps when sending
data which is called the upstream rate.
Such rates transform the existing
information network from one limited to
voice, text and low resolution graphics
to a powerful, ubiquitous system capable
of bringing multimedia, including full
motion video, to everyone's home this
century. The basic and the important
requirement of the ADSL connection is
the ADSL modem. ADSL is growing in its
popularity all over the world with a
rapid speed. Unlike regular dialup phone
service, ADSL provides
continuously-available, "always on"
connection.
The A stands for Asymmetric in the
ADSL., which means that the speed of
your connection does not flow equally in
both directions. Data from the ADSL
connection is received much faster from
the internet than that of the sent to
the internet. The ADSL is the perfect
solution for the Internet surfing but it
is not good for the Web hosting.
An ADSL circuit is much faster than a
regular phone connection, and the wires
which are used for the ADSL are the same
as copper wires, which are used for the
regular phone service. An ADSL circuit
must be configured to connect two
specific locations, similar to a leased
line.. ADSL is often considered as an
alternative to ISDN, allowing higher
speeds in cases where the connection is
always to the same place. ADSL will play
a very vital role over the next few
years as telephone companies, and other
Internet service providers, enter new
markets for delivering information in
video and multimedia formats.
By bringing movies, television, video
catalogs, remote CD-ROMs, corporate
LANs, and the Internet into homes and
small businesses, ADSL will make these
markets viable, and profitable, for
telephone companies and application
suppliers alike.
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