ADSL
PrintAsymmetric Digital Subscriber Line. ADSL is asymmetric because it provides greater bandwidth downstream (from the server to the client) than upstream.
The modern ADSL technology converts existing twisted-pair telephone lines into access paths for multimedia and high-speed data communications. ADSL transmits more than 6 Mbps (optionally up to 8 Mbps) to a subscriber (downstream), and up to 640 kbps (optionally up to 1 Mbps) in both directions. ADSL uses sophisticated modulation schemes of multiple (hundreds of) carrier tones, thereby creating very high requirements for the dynamic range of the test equipment.
ADSL is part of a family of standards known as xDSL.
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