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.

What Is DSL ?

DSL is a technology aims to offer broadband connectivity to businesses and individuals through the use of cheap telephone lines. DSL basically uses the infrastructure of a regular telephone network, because this network had been widely spread around the world for some time, there is no need to acquire new infrastructure or upgrades.

DSL technology uses the extra capacity within copper telephone lines; it merely allocates the unused bandwidth in phone line for data transmission. Telephone lines normally carry voice data but there is a huge “space” left that can be used or some other purpose. In fact, telephone wires have a huge bandwidth or range of frequencies that can be used to transport other forms of data apart from voice. DSL capitalize on this extra capacity to deliver its data without disturbing telephone signals. So you can carry on a conversation on the telephone line without affecting the data transfer being carried out by the DSL. In short  a DSL circuit can carry both data and voice signals at the same time, it has the added feature of keeping the data part in continuous connectivity.
 

With DSL, the closer you are to the DSL service provider, the faster and more stable your connection can be. So if you are within a certain perimeter of the DSL Company, then you can obtain speeds up to 6 megabits. This speed will ensure that your motion pictures, audio and video will be transmitted correctly without breaking, jerking or freezing. With regards to internet connectivity, you can have speeds up to 1.5 Mbps for downstream and 128 Kbps for upstream. This feature makes DSL a viable solution over dial up which uses the same medium to produce about one tenth of the speed available in DSL. If you regularly load multimedia files such as MP3s, audio, and video, then DSL is your best choice.