ADSL (Asymmetric Digital Subscriber Line) 2
ADSL (Asymmetric Digital Subscriber Line) 2 : (TEL, HE) Is one form of the Digital Subscriber Line technology, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voice-band modem can provide. It does this by utilizing frequencies that are not used by a voice telephone call. A splitter, or DSL filter, allows a single telephone connection to be used for both ADSL service and voice calls at the same time. ADSL can generally only be distributed over short distances from the central office, typically less than 4 kilometers (2 mi), but has been known to exceed 8 kilometers (5 mi) if the originally laid wire gauge allows for farther distribution. At the telephone exchange the line generally terminates at a Digital Subscriber Line Access Multiplexer (DSLAM) where another frequency splitter separates the voice band signal for the conventional phone network. Data carried by the ADSL are typically routed over the telephone company's data network and eventually reach a conventional Internet Protocol network
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