What is ADSL

Asymmetrical digital subscriber line (ADSL) uses existing copper wire telephone lines to deliver a broadband service to homes. It is one of the most viable forms of digital subscriber lines due to its effectiveness over distance, that is, it does not require the user to be as close to an exchange as other forms of DSL. Asymmetric refers to the fact that it provides a faster downstream (towards the consumer) than upstream (towards the exchange) connection.

Asymmetric Digital Subscriber Line.

ADSL (Asymmetric Digital Subscriber Line) allows voice and data to be sent simultaneously over the existing copper-based telephone line (ITU-T Recommendation G.992.1), with speeds up to 6Mbps downstream and 640Kbps upstream. In July 2002, the ITU completed G.992.3 and G.992.4, two new standards for ADSL technology collectively called “ADSL2”, allowing for a maximum 12Mbps downstream speed and 1.3Mbps upstream. In January 2003, a new standard called ADSL2+ (ITU G.992.5) doubled the bandwidth used for downstream data transmission, achieving rates of 20 Mbps on phone lines as long at 1,5Km.

Standing for asymmetric digital subscriber line, it is a technique for transmitting large amounts of data rapidly on twisted pairs of copper wires, with the transmission rates for downstream access much greater than for the upstream access

Asymmetrical digital subscriber line.

Asymmetric digital subscriber line. This is the most used form of DSL.

Asymmetrical digital subscriber line.