asymmetric digital subscriber line
(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 (http://adsl.com/).
- Asymmetric bars
adverb, plural noun (gymnastics) (functioning as pl) a pair of wooden or fibreglass bars placed parallel to each other but set at different heights, for various exercises (functioning as sing) an event in a gymnastic competition in which competitors exercise on such bars
- Asymmetric digital subscriber loop
asymmetric digital subscriber loop Asymmetric Digital Subscriber Line
- Asymmetric warfare
warfare in which opposing groups or nations have unequal military resources, and the weaker opponent uses unconventional weapons and tactics, as terrorism, to exploit the vulnerabilities of the enemy. Contemporary Examples This is an ultimatum seeking a target in the disorienting matrix of asymmetric warfare. The History and Logic of Military Ultimatums, From Suez to […]
- Asymmetric time
noun musical time consisting of an odd number of beats in each bar divided into uneven combinations, such as 3 + 2, 4 + 3, 2 + 3 + 2, etc