ADSL (the acronym in English Asymmetric Digital Subscriber List, which translates as Asymmetric Digital Subscriber Line) is a type of digital data transmission and Internet access technology, which consists of the information by symmetrical pairs of telephone lines in copper. That is, accessing the Internet through the telephone line (switched telephone network, PSTN) that does not prevent regular use of the line for calls.
ADSL is a type of broadband connection, the name of which comes beginning the fact with the intention of the download capacity (starting the network to the computer) in addition to the download capacity (from the computer to the network) do not coincide, but as an alternative that the first is greater than the second. After all, most internet users receive more in order than they emit.
For ADSL to work, you need a telephone line and a modulation system that separates the voice and data frequencies by installing discriminating filters (called splitters, microfilters, or DSL filters) and an ADSL router—provided by the company providing the service.
This type of urban copper cabling is traditionally implementing. Still, in the last decades of the 20th century, fiberglass gradually replaced them. A material offering better conduction and performance, thus giving way to even better methods of transmitting digital information. Such as cable or Ethernet modems.
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What Is ADSL Used Pro
Like other digital broadcast systems, ADSL serves as a channel for transmitting digital data and connecting to the Internet.
It means that it is a virtually limitless source of information and online services, with all that that entails. This mode of connection was decisive in the massification of the Internet in homes and in urban areas during the 1990s.
In an ADSL connection, three autonomous transmission lines are well-known:
• Data sending channel. Where user information will subsist sent over the Internet (download or upload).
• Data reception channel. Information will be traditional from the Internet (download or upload). It determination be the widest of the three channels.
• Standard telephone service channel. Where phone calls will be further.
This separation allows for differentiated processing of data and transmission pulses. It can even be better in the so-called ADSL2 and ADSL2 + versions, in which a channel is also customary for transmission of subscription TV (cable) and video. High HD quality).
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