What is an asymmetric digital subscription line?
2 This is a form of a digital subscriber line that uses a regular telephone line to carry information. Together with the cable, ADSL is one of the two most common ways of providing broadband Internet services. For most Internet users, this is very useful for their use formula. While many people regularly view very detailed websites and download audio or video files, the only large amount of information they usually send are attachments to e-mails or recording through Filesharing. The ADSL allows the average user to gain the benefits of quick downloads without paying unnecessarily for the benefits of fast recording. It is the result of the biggest source of interference for internet data is more closely to telephone exchanges than near the customer's house. This means that the data passing through in exchange towards the customer - in other words, download - must be transmitted faster to get this interference.
In addition to the increased speed, there are several advantages of ADSL. One is that it can be used at the same time as the voice call made on the same line. This is because both types of data are transmitted to different frequencies. However, users must install a filter on the main phone that separates two sets of data. Another advantage is that computers can start accessing the Internet almost immediately, because there is no need to dial an internet company and first connect.
ADSL is not only the name of the technology, but is also used to reflect the specific technical standard. This includes a download speed of at least 8 Mbits per second and recording speed at least 1 Mbit per second. It is important to note that both of these data are theoretical data used to compare services. In practice, customers get lower results due to physical restrictions, such as rows interference or distance between phone and home exchange.
There are many other standards based on asymmetric digital subscription line system. The most common are ADSL2 and ADSL2+. The first has the theoretical download speed of 12 Mbits per second and the speed of 1 Mbit per second or 3.5 Mbity per second depending on the precise system used. It has the same recording speed, but doubles the theoretical download rate to 24 Mbits per second.