How does it work?

ADSL (Asymmetric Digital Subscriber Line) is a high speed Internet service that runs on your existing copper telephone line at speeds of 1.5 to 4 megabits per second. It utilizes the higher frequencies of the line not used by your voice service and does not interrupt the telephone connection. Therefore, you can talk on the phone and be online at the same time. There is no need for an additional line, as your telephone line will not be tied up by your Internet service.

DSL (digital subscriber line) is one of the two most common ways of going broadband, accelerating your Internet access to speeds that can be many times faster than a conventional dialup modem. DSL refers to a group of technologies that deliver higher speeds over standard telephone lines.

One advantage of ADSL is that it can share an existing phone line with voice (and even a conventional dialup modem), minimizing cost. There are two principal and incompatible forms of ADSL, CAP (carrierless amplitude and phase modulation) and DMT (discrete multitone transmission), although DMT now predominates.