Digital Subscriber Line (DSL)
DSL connections are high-speed data connections over copper wire telephone lines. As with cable connections, with DSL you can look up information on the Internet and make a phone call at the same time but you do not need to have a new or additional cable or line installed. One of the most prominent DSL services is ISDN (integrated services digital network, for more information click here ( http://www.britannica.com/bcom/eb/article/4/0,5716,129614+15,00.html)).
