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Asymmetric Digital Subscriber Line
is designed to deliver more bandwidth downstream (from the PoP to the customer site) than upstream. Downstream rates are up to 8Mbps, while upstream rates are up to 1Mbps, depending on line length and line condition. ADSL transmissions work at distances of up to 5km over a single copper twisted pair.
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Asynchronous Transfer Mode
An International Telecommunication Union - Telecommunication Standardisation Sector (ITU-T) standard for cell relay wherein information for multiple service types, such as voice, video or data, is conveyed in small, fixed size (53-byte) cells. ATM is connection orientated.
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