INDEX   TOC
Introduction
Product Overview
Settings and Administration
ADSL
SIP Support
Security
  Broadband Security
  Firewall Overview
  The Firewall in
  VPN Pass Through
  Security Log
  Smart Card Reader
Firewall Administration
Troubleshooting

ADSL

ADSL (Asymmetric Digital Subscriber Line) is a technology for transmitting digital information at a high bandwidth on existing phone lines to homes and businesses. Unlike regular dialup phone service, ADSL provides continuously available, "always on" connection. ADSL is asymmetric in that it uses most of the channel to transmit downstream to the user and only a small part to receive information from the user. ADSL simultaneously accommodates analogue (voice) information on the same line. ADSL is generally offered at downstream data rates from 512 Kbps to about 8 Mbps.