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Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional modem can provide.
The distinguishing characteristic of ADSL over xDSL is that the volume of data flow is greater in one direction than the other, i.e. it is asymmetric. Providers usually market ADSL as a service for people to connect to the Internet in a relatively passive mode: able to use the higher speed direction for the "download" from the Internet but not needing to run servers that would require bandwidth in the other direction.
There are both technical and marketing reasons why ADSL is in many places the most common type offered to home users. On the technical side, there is likely to be more crosstalk from other circuits at the DSLAM end (where the wires from many local loops are close together) than at the customer premises. Thus the upload signal is weakest at the noisiest part of the local loop, while the download signal is strongest at the noisiest part of the local loop. It therefore makes technical sense to have the DSLAM transmit at a higher bit rate than does the modem on the customer end. Since the typical home user in fact does prefer a higher download speed, the telephone companies chose to make a virtue out of necessity, hence ADSL.
More on [ Asymmetric Digital Subscriber Line ]
OMG! I just remembered our internet is being upgraded tomorrow to ADSL 2+! MULTI MEGABIT PER SECOND DOWNLOADS HERE I COME!
10rdBen (10rdBen) Sun, 08 Nov 2009 00:05:37 -0000
OMG! I just remembered our internet is being upgraded tomorrow to ADSL 2+! MULTI MEGABIT PER SECOND DOWNLOADS HERE I COME!
@tohuko ¿Ya pasó por ADSL Zone? http://www.adslzone.net/
joseluisserrano (José Luis Serrano) Sat, 07 Nov 2009 23:50:08 -0000
@tohuko ¿Ya pasó por ADSL Zone? http://www.adslzone.net/
@pedromoreno Anda, que chistosos los de Vodafone, no? Vaya tela como esta el mercado del ADSL...
lobotenaz (ArDoN) Sat, 07 Nov 2009 23:32:00 -0000
@pedromoreno Anda, que chistosos los de Vodafone, no? Vaya tela como esta el mercado del ADSL...
New blog entry: Sky Broadband ADSL username/password hardware lock-in http://stu.ie/?p=2222
essteeyou (Stu) Sat, 07 Nov 2009 23:30:20 -0000
New blog entry: Sky Broadband ADSL username/password hardware lock-in http://stu.ie/?p=2222
joer con el Francisco Ros... http://bit.ly/3g7q41, la cuestión es que hasta los utilitarios tienen última tec. y calidad, no como la ADSL...
pUaTrOn (David Gomez) Sat, 07 Nov 2009 23:07:50 -0000
joer con el Francisco Ros... http://bit.ly/3g7q41, la cuestión es que hasta los utilitarios tienen última tec. y calidad, no como la ADSL...
TA EXPLICADA A MORAL DO DILUVIO! O @infinitahighway vai por ADSL. O juizo final é logo ali...
AdrianHomrich (Adrian Homrich) Sat, 07 Nov 2009 23:05:59 -0000
TA EXPLICADA A MORAL DO DILUVIO! O @infinitahighway vai por ADSL. O juizo final é logo ali...
ADSL Forum - A group promoting DSL with explanations on all DSL technologies and the ADSL market.
ADSL Research Report - Report on ADSL, its history, how it works and what the future may hold.
Dan Kegel's ADSL Page - ADSL information page with many links and brief history of DSL.
Jupitermedia Corporation - Artical about technology also known as G.992.2. Describes how it works with the Digital Loop Carrier, the local loop infrastructure that connects customers located more than 18,000 feet from the central office.
Meta Description: [ Until now, one of the impediments to the spread of Digital Subscriber Line service has been the lack of a universal standard. That all changed this week with Tuesday's approval of G.lite.
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