D-Link DSL-200 Uživatelský manuál stáhnout pdf (Strana 14)

DSL-200 ADSL USB Modem User’s Guide

2 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.

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