ADSL in IT Glossary

Short for asymmetric digital subscriber line, a new technology
that allows more data to be sent over existing copper telephone lines
(POTS). ADSL supports data rates of from 1.5 to 9 Mbps when receiving
data (known as the downstream rate) and from 16 to 640 Kbps when
sending data (known as the upstream rate).

ADSL requires a special ADSL modem.

ADSL is growing in popularity as more areas around the
world gain access.