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Last modified: Friday, January 25, 2002 

Short for asymmetric digital subscriber line, a new technology that allows more data to be sent over existing copper telephone lines (POTS). ADSL supports data rates of from 1.5 to 9 Mbps when receiving data (known as the downstream rate) and from 16 to 640 Kbps when sending data (known as the upstream rate).

ADSL requires a special ADSL modem.

ADSL is growing in popularity as more areas around the world gain access.

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For pages about ADSL . Also check out the following links!

Related Links

Article on cable modems 
This Byte magazine article, from September 1996, provides information on the development of technologies that will solve bandwidth problems, with information on cable modems, ADSL, copper vs. coaxial, phone and cable problems, and infrastructure debates.

ADSL overview paper
This paper describes the history of ADSL, copper lines, a proposed standard, and ideas on commercial implementations.

ADSL technology paper
This paper provides an introduction of ADSL transmission technology and contains sections on definitions, initials, acronyms, and symbols, ADSL modulation methods, and progress.

ADSL tutorial
Provides an overview of ADSL and then delves into the technical details, including Discrete Multitone (DMT) linecodes and Carrierless Amplitude Phase (CAP) modulation.

ADSL Tutorials and Resources
Good collection of links to ADSL documents, including papers, tutorials, and articles. This page is hosted by the InterOperability Lab at the University of New Hampshire.

Everything DSL
A comprehensive site offering DSL information, glossary, FAQ's, Books, Reference, Technical Reports, News, DSL Request Forms, Messageboard, ISP Lists, Links and more.

Universal ADSL Working Group
Home page of the Universal ADSL Working Group (UAWG), an organization composed of leading PC industry, networking, and telecommunications companies contributing to the present T1.413 standard. The site includes news, questions and answers, announcements and related sites.

Sponsored listings Network Routers - Wholesale supplier of cable and PC products, including cable/DSL routers and wireless broadband routers.

Network Liquidators: Network Routers - An online destination for discount used, refurbished, and new open box network equipment. Up to 90% off list price.

All Internet Now: Asymmetric Digital Subscriber Line (ADSL) - Compare DSL Internet access options from over 25 ISPs. EarthLink, Covad, MCI, MegaPath, the Bells and more. Real-time results, Great ISP price offers.

Priority Electronics: Laptop Modems - Online seller of brand name laptop modems, PC cards, and PCMCIA accessories. Network Routers - Provides database of suppliers for network routers. Includes catalogs, technical information, and supplier contact information.

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