ADSL Last modified: Tuesday, October 13, 2009
Short for asymmetric digital subscriber line, ADSL is a type of DSL broadband communications technology used for connecting to the Internet. ADSL allows more data to be sent over existing copper telephone lines (POTS), when compared to traditional modem lines. A special filter, called a microfilter, is installed on a subscriber's telephone line to allow both ADSL and regular voice (telephone) services to be used at the same time. ADSL requires a special ADSL modem and subscribers must be in close geographical locations to the provider's central office to receive ADSL service. Typically this distance is within a radius of 2 to 2.5 miles. 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). See Types of Internet Connections in Webopedia's Quick Reference section. Also see Cable vs. DSL in Webopedia's "Did You Know...?" section.
•E-mail this definition to a colleague• For internet.com pages about ADSL . Also check out the following links! Webopedia's "Did You Know...?" Section  Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software. 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.	Internet Access Telecommunications broadband DSL G.SHDSL Internet Access Coalition Internet Access Provider microfilter xDSL Give Us Your Feedback Shopping ADSL Products Compare Products,Prices and Stores Shop by Category: Routers 275 Model Matches Expansion Modules 4 Model Matches