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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.   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. 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. Related Categories Internet Access Telecommunications Related Terms broadband DSL G.SHDSL Internet Access Coalition Internet Access Provider microfilter xDSL Shopping ADSL Products Compare Products,Prices and Stores Shop by Category: Routers 246 Model Matches Expansion Modules 2 Model Matches Search: WebMediaBrands Corporate Info Legal Notices, Licensing, Permissions, Privacy Policy. Advertise | Newsletters | Shopping | E-mail Offers | Freelance Jobs Solutions Whitepapers and eBooks Articles: Build a More Agile Business with IBM IBM Articles: Virtualization Delivers a Dynamic Infrastructure Articles: IBM Offers Enhanced Measurement and Management for Energy Usage Articles: IBM Helps Transformation to an Information-Based Enterprise Microsoft Articles: Visual Studio 2010 Adobe Article: Adobe Helps PHP Developers Create Rich Internet Applications Adobe Article: Java Developers Finding a Home at Adobe Flex IBM Articles: A Smarter Business Needs Smarter Technology Intel Xeon Processor Increases Server Efficiency and Capabilities Intel Tech Brief: Automated Energy Efficiency for the Intelligent Enterprise Oracle Whitepapers - Innovation for IT Leaders Avaya Article: Communication-Enabled Mashups--Empowering Both Business Owners and IT Internet.com eBook: IT Manager's Guide to Social Networking Internet.com eBook: Get Ready for Windows 7 Microsoft Article: Expression Web 3--New Features for PHP Developers Whitepapers: Manage Your Business Infrastracture with IBM Whitepaper: Maximize Your Storage Investment with HP Internet.com eBook: Becoming a Better Project Manager Microsoft Article: Stress Free and Efficient Designer/Developer Collaboration MORE WHITEPAPERS, EBOOKS, AND ARTICLES Webcasts SAP Webcast: Crystal Reports Server--Do More. Spend Less. Webcast: Connecting PHP to Microsoft Technologies Video: Microsoft Partner Program Benefits Video: Windows Azure Debugging Tips SAP BusinessObjects Webcast: Unlock the Power of Reporting with Crystal Reports IBM Webcast: Speed Business Innovation with Reduced Cost and Risk Video: Deploy Applications on Windows Azure MORE WEBCASTS, PODCASTS, AND VIDEOS Downloads and eKits Download: Microsoft Visual Studio 2010 Beta 2 Downloads & Free Trials: Microsoft's New Efficiency Resource Center Get the Windows 7 SDK Free Trial: Red Gate SQL Backup Pro 6 Iron Speed Designer Application Generator MORE DOWNLOADS, EKITS, AND FREE TRIALS Tutorials and Demos Internet.com Hot List: Get the Inside Scoop on the Hottest IT and Developer Products All About Botnets MORE TUTORIALS, DEMOS AND STEP-BY-STEP GUIDES