ADSL ==>
Asymmetric Digital Subscriber Line
<communications, protocol> (ADSL, or Asymmetric Digital Subscriber Loop)
A form of Digital Subscriber Line in which the bandwidth available for
downstream connection is significantly larger then for upstream. Although
designed to minimise the effect of crosstalk between the upstream and downstream
channels this setup is well suited for web browsing and client-server
applications as well as for some emerging applications such as video on demand.
The data-rate of ADSL strongly depends on the length and quality of the line
connecting the end-user to the telephone company. Typically the upstream data
flow is between 16 and 640 kilobits per second while the downstream data flow is
between 1.5 and 9 megabits per second. ADSL also provides a voice channel.
ADSL can carry digital data, analog voice, and broadcast MPEG2 video in a
variety of implementations to meet customer needs.
["Data Cooks, But Will Vendors Get Burned?", "Supercomm Spotlight On ADSL" &
"Lucent Sells Paradine", Wilson & Carol, Inter@ctive Week Vol. 3 #13, p1 & 6,
June 24 1996].
See also Carrierless Amplitude/Phase Modulation, Discrete MultiTone.
ADSL Forum.
(1998-05-18)
Nearby terms:
Astral « AST Research, Inc. « asymmetrical
modulation «
Asymmetric Digital Subscriber Line » Asymmetric
Digital Subscriber Loop » asynchronous »
Asynchronous Balanced Mode
|
