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DSL ISP Info
A brief history about DSL and it's development.
DSL Service
Providers
Some top DSL providers and plans they offer to consumers.
What Is DSL
An introduction to the technology and driving force behind it.
How It Works
Learn how DSL works and related hardware that make the technology
possible.
Types of DSL
ADSL, SDSL, SHDSL, IDSL and more ...
Advantages And Disadvantages
Look at some of the principal advantages and disadvantages of the DSL.
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DSL Advantages And
Disadvantages
ADVANTAGES OF DSL
DSL has a lot of advantages over other lines of connectivity, especially
dial up. Here we look at some of the principal advantages of DSL :
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DSL simultaneously keeps your Internet connection and phone lines open. So
whilst you are browsing, you can receive or make phone calls. In theory,
this means that you will not incur any telephone charges for keeping your
internet open if you are not making a call.
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You can have speeds higher than you can have with a regular modem. A regular
modem may give you up to 56 kbps but a DSL can offer up to 1.5 Mbps.
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Downloads are faster than uploads which makes it ideal for situations where
you need a high volume of incoming data at low volume of outbound data.
Email users, news readers and researchers will find DSL as a viable option
when it comes to internet connectivity.
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DSL uses the existing wiring infrastructure of your telephone lines. You do
not need to get new cabling to hook up to the service. There is no need to
acquire new infrastructure or upgrades.
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DSL is secure. Unlike cable modems, each subscriber is given a separate
network so that vulnerabilities and intrusions are minimized.
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DSL is always on. Unlike dial up, you do not have to connect ad reconnect
over time.
DISADVANTAGES OF DSL
Despite its attractiveness, DSL has some limitations.
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DSL efficiency is related to distance. The farther you are away from the
provider, the more unreliable the service becomes.
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People who need to upload large amounts of data such as corporate database,
video, large audio files and images will not find DSL attractive though it
is fast.
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DSL is limited to a certain perimeter. People very far away from the
provider may not be able to get the service. Service may be constrained to
about 18,000 feet radius of the provider. Thus, availability is determined
by distance from the providing source.
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There is no standardization. Each company comes with its own equipment. So
if you leave one city to go to the other, you may have to purchase a new set
of equipment from the new company.
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Additionally, DSL operates on traditional copper telephone lines, and is
incompatible with fibber optic lines.
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Downloads are faster than uploads; making it unsuitable for businesses and
individuals who need to send heavy data of multimedia origin across the net.
People who do constant upload of heavy files through email attachments or
ftp transfers will experience difficulties with DSL.
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If traffic on the phone line is heavy, you may experience stalling with your
internet connectivity. The reason why this happens is that, the DSL
technology is using spare lines form the telephone channel to deliver its
data. So the telephone signals have some form of priority over the DSL when
it comes to data transmission. Although these instances are rare, it is a
theoretical possibility that a heavy usage of the phone may witness a drop
in DSL data access.
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