Complete Protocol dictionary, glossary and reference

ADSL: Asynchronous Digital Subscriber Line

Asynchronous Digital Subscriber Line (ADSL) is one of the Digital Subscriber Line technologies that allows broadband data access over normal phone lines (twisted pair cables, also called POTS). ADSL allows higher speed for data downstream than upstream and this is why the word "Asynchronous" is there. For conventional ADSL, downstream rates start at 256 kbit/s and typically reach 8 Mbit/s within 1.5 km (5000 ft) of the DSLAM equipped central office or remote terminal. Upstream rates start at 64 kbit/s and typically reach 256 kbit/s but can go as high as 1024 kbit/s. The name ADSL Lite is sometimes used for the slower versions.

Standard Organization

ANSI/ITU-T

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