http://www.dslforum.org/aboutdsl/adsl_tutorial.html
http://www.everythingdsl.com/whatis/
http://www.everythingdsl.com/howfast/
http://www.everythingdsl.com/faq/
http://www.dsllife.com/dsltut.htm
http://www.howstuffworks.com/dsl.htm
to je to:)
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