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ADSL

By Jennifer Spencer

ADSL is the acronym for Asymmetric Digital Subscriber Line, and they are used to enact data transmission at high speed to the internet. Invented by AT&T and adopted by ANSI as standard T1.413 in 1995. Like all DSL broadband technologies, enables a standard telephone line (copper twisted-pair) to simultaneously carry voice and data.

Asymmetric bandwidth is ideal for Internet access because users typically download much more information than they upload. ADSL’s other advantages include: it is always on (you don’t need to “dial up” to the Internet), it works over existing telephone lines, you can talk on the phone and surf the Internet at the same time, and it offers increased security. The actual performance you receive from depends on many factors. See also modem, DSL, G.lite.

Technipages Explains ADSL

Asymmetric Digital Subscriber Line is a technology that provides a high-speed digital network with the use of the Plain Old Telephone Service (POTS). The copper cable used by POTS is most being used in most home and offices. ADSL allows transmission of both data and voice at the same time.

ADSL allows a faster download speed and a slower upload speed in order to utilize the copper wires more effectively. Before the advent of ADSL, SDSL was in operation, SDSL (Symmetrical Digital Subscriber Line) only allows for upload speed and download speed to be at same speed rate. The downside to this was that it caused traffic over the lines to stop.

ADSL works best with users who download content from the internet, as ADSL would be stressful to use for users who will need to upload contents data. ADSL technology relies on the ability of copper telephones lines to transmit signals, this was introduced by Joseph Lechleider in the 1980s. At the time Joseph Lechleider worked at Bellcore, a research firm broken out from AT&T. Commercialization of ADSL began in the 1990s, and this can be credited to John Cioffi.  ADSL was the implementation of Joseph Lechleider’s work.

Common Uses of ADSL

  • ADSL was a very insightful exploration of an already available base material, copper wires being used in the local landlines.
  • The Advent of ADSL has now made downloading of files from the internet much more enjoyable as it ensures a high download speed
  • With the usage of POTS copper cables, ADSL can be used at both home and high-speed offices

Common Misuses of ADSL

  • With ADSL it is impossible to surf the internet and make voice calls at the same time
  • ADSL technology is best suited for uploading of data over the internet as it features high upload speed and slow download speed.

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Who’s Behind Technipages?

Baby and Daddy My name is Mitch Bartlett. I've been working in technology for over 20 years in a wide range of tech jobs from Tech Support to Software Testing. I started this site as a technical guide for myself and it has grown into what I hope is a useful reference for all.

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