Alcatel Carrier Internetworking Solutions 3EC 16807 AAAA TCZZA ED. 07 manual

1 Speed Touch USB Installation Guide

What is ￿DSL ADSL provides simultaneous high9speed Internet access and regular phone services over the existing telephone line already in your house. With downloads at up to 8Mbps it's up to 200 times faster than traditional modems. What's more, your connection to the Internet is established immediately and busy tones are a thing of the past.

ADSL is short for Asymmetric Digital Subscriber Line. This somewhat cryptic name is best explained in straightforward terms:

￿Line: ADSL uses the ordinary existing copper line, known as •local loop", running between your local premises and the telephone Central Office￿(CO).

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Subscriber: That's you, the end user. Because this is what Service Provider￿(SP)s, or operators call their customers.

Digital: ADSL is a digital transmission technology. To a certain extend, digital information is not affected by impairments on the telephone line, thus achieving a higher reliability.

￿Asymmetric: ADSL can transmit data much faster from the Internet towards the end user than vice versa.

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