Definition of Adsl - asymmetrical digital subscriber line

ADSL - Asymmetrical Digital Subscriber Line
The phone company's answer to cable modems and in the future even an alternative to ISDN . An ADSL circuit connects two specific locations (similar to a leased line ) but it is much faster than a regular phone connection. In theory ADSL allows download speeds of up to 9 Mbps and upload speeds of up to 640 Kbps.