Table of Contents
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1 Introduction
Congratulations on your purchase of a Digital Subscriber Line
(DSL) modem. The DSL modem is part of a system that
provides an integrated end-to-end solution for data
connectivity, multimedia services, and high-speed Internet
access services using asymmetrical digital subscriber line
(ADSL) transmission over your current telephone wiring. With
ADSL technology, information can be processed at speeds up to
250 times faster than today's analog modems.
1.1 ADSL Technology
The ADSL technology uses advanced digital modulation to
transmit at high speeds over standard telephone wiring. This
technology can download data at speeds up to 8 megabits per
second and upload data at speeds up to 768 kilobytes per
second.
Phone
PC with
Ethernet
NIC
POWER
MODEM
DATA
DSL Modem
By using a DSL modem, Internet service providers and local
telephone companies can offer high-speed Internet access,
virtual private networks (VPNs), telecommuting, video on
demand, and other broadband services.
There are two methods of installing the DSL modem service in
the home. Both methods are explained in the following
chapters. The first method, using microfilters, is explained in
Chapter 3. The microfilter removes high-frequency noise from
Local Telephone
Company
1
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