Introduction To The Router - D-Link DSL-500 User Manual

DSL-500 ADSL Router User's Guide
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Introduction to the Router

This chapter describes the Router and it features and includes an introduction to ADSL technology. Diagrams are
provided detailing the hardware and LED indicators. A list of package contents is presented at the end of the
chapter.
Router Description and Operation
The DSL-500 ADSL Router is designed to provide a simple, cost-effective and secure ADSL Internet connection
for your small- to medium-sized private network. The DSL-500 combines the benefits of high-speed ADSL
connection technology and TCP/IP routing with a conventional Ethernet interface in one compact and
convenient package. ADSL connection technology enables many interactive multi-media applications such as
video conferencing and collaborative computing.
The Router is easy to install and use. The DSL-500 connects to an Ethernet LAN via a standard Ethernet
10BASE-T interface using 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 using a single WAN interface and IP address.
The Router supports transparent bridging and can be used for IP packet routing over the Internet. Cost saving
features of the Router such as NAT (Network Address Translator) and DHCP (Dynamic Host Configuration
Protocol) improve administration efficiency and improve security. The advanced security enhancements, packet
filtering and port redirection, can help protect your network from potentially devastating intrusions by malicious
agents from outside your network.
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. The use of existing copper telephone lines forgoes the need for upgrading
lines 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.
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 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 service provider. The user is always connected thus eliminating dial-up time
and simplifying connectivity issues.
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