DSL Overview
( copied from web site of FreeDSL.com ( They offer free DSL service- click on the link)
A Digital Subscriber Line (DSL) delivers high-speed Internet access using existing copper telephone lines already installed in hundreds of millions of homes and businesses worldwide. With DSL, consumers and small businesses take advantage of having a dedicated, always-on connection to the Internet. What this means to you…no more having to dial-in to get connected. DSL provides broadband speeds of up to 8Mbps; that’s up to 50 times faster than conventional dial-up connections.
Your existing copper telephone lines are made up of different bandwidth channels. The lower bandwidth channel carries your voice communication (telephone), which leaves the higher bandwidth channel available for two-way high-speed data transmission utilizing DSL technology. There is no need for an additional phone line because DSL uses the higher bandwidth channel your telephone doesn’t. Therefore, you can talk on the phone at the same time you are accessing the Internet at DSL Speed!
In order to make it work, your digital modem or router located at your location accesses the local telephone companies’ central office (CO) where the telephone company has installed a DSLAM that translates your DSL signal. The signal is then transmitted from the copper telephone line onto a network backbone, and directed to our location where we verify your access to our network and deliver you to the Internet through our relationship with a backbone network provider.
Broadband Digital Group utilizes a National Fiber Optic Network to provide you with the most reliable, high-speed Digital Subscriber Line service in just about every DSL supported area in North America.
In order to make it work, your digital modem or router, located at your location, accesses the local telephone companies’ central office (CO) where the telephone company has installed a DSLAM that translates your DSL signal. The signal is then transmitted from the copper telephone line onto our network backbone and directed to Broadband Digital Groups DSL aggregation routers where we verify your access to our network and deliver you to the Internet through our relationship with a backbone network provider.