How is DSL different from todays analog modems?
In order to achieve data transmission rates of up to 300 times faster than analog modems, DSL technologies use a wider band of frequencies. Also, because DSL uses a digital signal, unlike today’s analog modems, DSL transmissions do not pass through the regular analog voice telephone network. This element of DSL can clear the “congestion” that a lot of dial-up Internet traffic causes (the cause of delayed dial tone in certain high-Internet use areas).