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$&'()5!8%4#&5Cj(: 5!%H`;?LFa+%0(LFa0]`LFaJ(: 1()$"5!/48(.+5C0! v `6w!?LFa+%(!+&*(.+5#`>L!D+!(E%#+ >I+!(E4 2(.+5#`!Q8C!(.+5# +;  B#0"C1:="X1 4$0X1N0 10<bx0+%%(:><oE; *+,-./01 2Modem ADSL:!(B?LFa4%!&'()5!>\]+%+!+ +!!E%&'()% 3%0; 2Mạch vòng/Local Loop:a%$&'()5! R&'f &'Cj(:%(:; *+,-./+**34*56 + DSLAM (DSL Access Multiplexer):W0("4 !CM+%0  1LFa&*-/%(:; LFa?+"(.+5f$\LFa%3*%$+" 0!Q&K[x[!-0o<Mh>[TT CEd"&GBB (.+5; + BAS (Broadband Access Server):+% -.LFa?%bobGFb; :W?F+%J/!%#+$!6J&4%! 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