Asynchronous Digital Subscriber Line: Difference between revisions

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'Asynchronous Digital Subscriber Line' is a misnomer for Asymmetric Digital Subscriber Line or ADSL

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-'''Asynchronous Digital Subscriber Line''' (ADSL), a form of [[DSL]], is a high speed data communications technology enabling use of existing analog telephone lines for access to the Internet and other services.
+'Asynchronous Digital Subscriber Line' is a misnomer for '''Asymmetric Digital Subscriber Line'''  or [[ADSL]]
-Using bandwidth higher that that of voice signals on the telephone line, it is always on, requiring no dialing to initiate a connection.  To optimize performance in typical applications, it is asymmetric: the received or downstream rate is higher than the transmitted or upstream rate.  Data and analog voice communications occur simultaneously on the same telephone line.
-Upstream rates are typically 256 kbps.
-Downstream rates can be as high as 6 Mbps over short ranges, although 2 Mbps is more common.
-Because of the relatively low data rate (compared to optical backbone networks) [[ATM]] is an appropriate technology for multiplexing time-critical data such as digital voice with less critical data such as Web traffic; ATM is widely employed over ADSL technology to ensure that this remains a possibility.
-See also:
-*[[DSL]]
-*[[SDSL]]
-*[[ISDN]]