Whether you are looking at Virgin Media Broadband, Tiscali Broadband, O2 Broadband, Think Broadband, or any of the other personal and business broadband companies offering connection services throughout the United Kingdom, there are two options when it comes to using a modem to access the Internet: a cable modem and a DSL modem. While the former utilizes the cable television network, a DSL modem works by providing digital data transmissions over the wires of the local telephone network. These days it is mostly referred to as ADSL, or Asymmetrical Digital Subscriber Line. DSL broadband is offered simultaneously with the regular telephone service on the same telephone line, and is differentiated by the fact it uses a higher frequency band that is separated by filtering. This allows an individual to use the telephone in conjunction with the Internet. Transfer rates are limited depending upon the condition of the line, service-level applications, and the DSL technology currently available from the broadband provider.
DSL is one of the most common options in countries that have not yet established a regular fibre-optics network, or for individuals who live in areas where cable TV is not the norm. These days this is mostly in countries that are still developing in comparison to Western standards. While DSL was considered a major player prior to the advent of cable modems, the cable modem has since replaced the DSL as the most common type of Internet modem used on a global basis, although fibre-optic connections are expected to surpass cable in the next few years.