xDSL , (Digital Subscriber Line ). , (splitter). ( 3,5 ) ( ), ( 4 ) xDSL-. ( ) 1 , , 56 /, . . (FDM) , . (echo-cancellation) , . , . , ( , - ) ( URL).
ADSL (Asymmetric Digital Subscriber Line), (downstream) 6,1 /, 16-640 /. 1/1 (2,048; 4,096 6,144 / 1 1,544;3,088; 4,632 6,176 / 1). ( , , , . .). 5,5 0,5 (24 AWG) 4,6 0,4 (26AWG). 6,1 / 3,7 0,5 27, 7 0,4 .
UADSL (Universal ADSL), DSL Lite, ADSL c ( 3,5 1,5 / 384 / ; 5,5 640 196 /). .
RADSL (Rate Adaptive Digital Subscriber Line) .
HDSL (High Data-Rate Digital Subscriber Line) , 1,536 2,048 / . 3,7 , .
SDSL (Single-Line Digital Subscriber Line) (1,536 2,048 /), 3 .
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VDSL (Very High Data-Rate Digital Subscriber Line) ( 56 /), . 1,5 . , . ( ), ( ) , .
xDSL, ( ) . , , xDSL , . ADSL UADSL . xDSL , , .
(CATV), 75 . . , . ADSL, : , . (downstream) TV. (upstream) (, ISDN ). ( ) . , . .