DSL-200 ADSL USB Modem User’s Guide
6
INTRODUCTION
ADSL modem technology is a relatively new technology and may be unfamiliar to the reader. In
this section, we introduce you to ADSL technology and give a brief description of its key attributes.
We also give a general description of the D-Link DSL-200 USB Modem and its main features.
What is ADSL?
Asymmetric Digital Subscriber Line (ADSL) is an access technology that utilizes ordinary copper
telephone lines to enable broadband high-speed digital data transmission and interactive
multimedia applications for business and residential customers. Using existing phone lines avoids
the need for adding expensive new cable.
ADSL modems use digital coding techniques that greatly increase the bandwidth capacity of
telephone lines without interfering with regular telephone services. For the ADSL modem user,
this means much faster data communications. ADSL modems make it possible to enjoy benefits
such as high-speed Internet access, telecommuting, collaborative computing, distance learning,
movies on demand and multi-player video gaming without experiencing any loss of quality or
disruption of voice/fax telephone capabilities.
ADSL provides a dedicated service over a single telephone line operating at speeds of up to 8
Mbps downstream (to the user) and up to 640 Kbps upstream, depending on the type of service and
local telephone line conditions. These conditions are ideal for many user applications. A secure
point-to-point connection is established between the user and the central office of the local
telephone company. The user is always connected, thus eliminating dial-up time and simplifying
connectivity issues.
D-Link ADSL devices incorporate the recommendations of the ADSL Forum (www.adsl.com)
regarding framing, data format, and upper layer protocols.
Modem Description and Operation
The DSL-200 ADSL USB Modem is easy to install and use. Please note that you must first install
the software driver for the device by following the instructions in Chapter 3. Once the driver has
been installed you can connect the Modem to your computer. The Modem connects directly to any
functional USB port on a PC with standard USB cable.
Software drivers for D-Link ADSL USB Modems can be fully upgraded by simply loading newer
versions onto your PC. This will allow you to update the modem and use new features and
enhancements as they are developed and standardized. Online information regarding the latest
downloadable software and improvements can be found at http://tsd.dlink.com.tw.
