Alcatel Speed Touch USB PPPoE, User Manual

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What is ADSL
1 Speed Touch USB Installation Guide
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3EC 17545 AAAA TCZZA Ed. 02
ADSL provides simultaneous highspeed 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).
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.