D-Link DSL-504 User Manual - Introduction

DSL-504 ADSL Router User’s Guide 

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Introduction 

This chapter describes the DSL-504 ADSL Router and its features and gives a 

brief introduction to ADSL technology. 

Router Description and Operation 

The DSL-504 ADSL Router is designed to provide a simple, cost-effective and 

secure ADSL Internet connection for your small to medium sized corporate LAN. 

The DSL-504 combines the benefits of high-speed ADSL connection technology 

and TCP/IP routing with Ethernet capabilities in one compact and convenient 

package. ADSL connection technology enables many interactive multimedia 

applications such as video conferencing and collaborative computing.  

The Router is easy to install and use. The DSL-504 offers four dedicated Ethernet 

LAN ports using standard RJ-45 connectors. The ADSL connection is made using 

ordinary twisted-pair telephone line with standard RJ-11 connectors. This 

arrangement means that several PCs can be networked and connected to the 

Internet.  

The Router can be used for IP packet routing over the WAN and also supports 

transparent bridging. The Router is ideal for secure telecommuting through the 

use of virtual private networks (VPN). Cost saving capabilities of the Router 

includes NAT (Network Address Translator) and DHCP (Dynamic Host 

Configuration Protocol), which allow you connect several hosts to the Internet 

using a single global IP address.  

ADSL Technology 

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 copper telephone lines forgoes the need

for 

upgrading or adding expensive new cable. 

ADSL devices use digital coding techniques that greatly increase the potential 

capacity of phone lines without interfering with regular telephone services. For 

the ADSL user, this means much faster data communications and the potential 

for interactive video capabilities. ADSL devices make it possible to enjoy benefits 

such as high-speed Internet access, telecommuting (remote LAN access), 

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. 

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