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Welcome to the new web site of DaveNeedham.com |
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ADSL Connections What is ADSL? ADSL (Asymmetric Digital Subscriber Line) is a relatively new way to connect to the Internet, at speeds many times that of current dial-up modems. It is fast, easy to install, 'always-on' and provides unlimited and unmetered access. ADSL is one type of 'broadband' service, which generally refers to high-speed internet connections. How does it work? ADSL works by enabling the current copper wires in your existing telephone lines to carry a larger volume of information. Traditionally, such volumes were not required for simple voice and fax calls, but the wires themselves are capable of carrying much more data. The existing telephone is 'split' by a small micro-filter for each socket, allowing you to use your telephone at the same time. The majority of ADSL users can keep their existing telephone number. Most home ADSL connections run at around 500Kbps, and when compared to the approximately 50Kbps of dial-up modems, this is a significant performance improvement. In practice, dial-up modems often connect at speeds closer to 30 or 40Kbps, and 500Kbps ADSL lines can run well in to the 500s. (Don’t worry about the Kbps - it's just a measure of data transmission speed and is used here for comparative purposes.) ADSL also provides an 'always-on' connection. You can disconnect, but connection times are generally a second or two, rather than the 30 or so for a dial-up modem. Together with the transmission speed, and no line-engaged tones, this truly enhances the appeal and practicalities of the Internet. You really can check a web site in 10 seconds, when before you might not have bothered. How much does it cost? There is a one-off setup and equipment cost, charged by the ADSL provider, that is typically between £50 and £100. Monthly fees are between about £20 and £30, depending on your chosen provider. How do I get it? To use ADSL, you must be within about 3 to 5 kilometres of your local exchange, and this exchange must be 'ADSL enabled'. The majority of UK households meet this requirement, but those in remote, rural areas may have to wait until there is sufficient local interest for the network operator (such as BT Wholesale) to convert the exchange. If you would like to get ADSL, you can either contact the providers directly (who advertise in the media) or |
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