Introduction; What Is Adsl; What Exactly Is Dlan - Devolo MicroLink dLAN ADSL Modem User Manual

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Introduction

1.1

What is ADSL?

The sheer speed of development of computer technology over the last few
years has resulted in a huge increase in the volume of electronic data traffic.
More users every day want to send and receive a constantly increasing vol-
ume of data. Conventional transmission technologies (analog modems or
ISDN devices) are no longer equal to the demand.
New technologies are eliminating the restrictions and are offering the user
true broadband communications at significantly higher transfer speeds. An
important criterion for the spread of these access technologies is their avail-
ability in as many offices and private households as possible. One of the tech-
nologies is transfer by ADSL, which bridges the section of the network that
connects to the customer ("the last mile") over standard copper wires. ADSL
can thus be used for broadband access to the Internet, for example.
ADSL (Asymmetric Digital Subscriber Line) technology uses three different
ranges of a conventional copper telephone line—two for data communica-
tions and one for telephone service. The term 'Asymmetric' indicates that the
transmitting and receiving channels can carry different quantities of data:
b
b
1.2

What exactly is dLAN?

There is now a new alternative to the well-known wired LAN and Wireless
LAN network technologies: dLAN (direct LAN, i.e. directly networked). dLAN
is networking using the electric wiring already installed in the building.
When the user surfs the Internet, the data sent to the Internet Service
Provider (ISP) tend to carry less information (e.g. addresses of web sites
or e-mails). The transmission rate of up to 1 Mbps is generally sufficient
for this purpose.
To load multimedia content (video sequences, animations, images etc.)
onto the computer from the Internet at acceptable quality and speed, a
transmission rate of up to 8 Mbps brings a significant saving in cost and
time.
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devolo MicroLink dLAN ADSL Modem Router
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Introduction
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