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ADSL or Asymmetric Digital Subscriber Line is a
broadband technology that leverages the existing telephone network to
provide high-speed Internet service to homes and businesses.
The telephone exchange equipment must be upgraded and connected to the
Internet. A special ADSL modem must be used at the subscriber's site to
connect the computer to the phone network.
ADSL broadband service is comparatively inexpensive, dependable and
provides sufficiently fast Internet access. The distance from the
telephone exchange to the subscriber's computer must, however, be under
5.5 kilometers. Much faster connection speeds are possible when the
distance is less.
Because speed to download data is faster than to upload data to the
Internet, ADSL is well suited for surfing the web and for using
applications that don’t require huge volumes of data to be uploaded. It
is not as good for interactive services such as teleconferencing or for
publishing large volumes of data to the Internet. SDSL or Symmetric
Digital Subscriber Line technology is superior for such applications.
 
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