ADSL Lite (, ) ADSL, "" 1 / "" 512 /. ADSL Lite , ADSL, , .
ADSL Lite, G.Lite, . . , . 15 ITU (International Telecommunications Union ) G.992.2 1998 . , , ANSI, ATM ADSL.
IDSL
IDSL 144 /. ADSL IDSL . , IDSL, ISDN, 2B1Q, . ISDN IDSL , . IDSL ( , DSL), ISDN .
HDSL
HDSL , . (1,544 / 2,048 / ) HDSL T1/E1. ( 1 1,544 /, 1 2,048 /.) , HDSL ( 3,5 4,5 ), , ADSL, , , HDSL . HDSL , , .. HDSL2 HDSL. , HDSL, .
SHDSL - Simmetric High Speed Digital Subscriber Line ( ) xDSL ADSL , , .
|
|
SHDSL , .
? , :
- , ;
- - ;
, xDSL ( , , ) ..
SHDSL ( / ) 2 /c. .
SHDSL , ( ). SHDSL Prestige 791R EE Zyxel. .
SDSL
HDSL, SDSL , 1/1, SDSL . -, , -, 3 . SDSL , , , . SDSL HDSL2.
SDSL" - , . SDSL 2,3 /. SDSL , , ( ), . SDSL , , , SDSL . SDSL , , . SDSL , . .
|
|
SDSL . Lucent DSL Pipe. : Zyxel Prestige 782 R, PairGain 300 S, Agate - 200.
VDSL
VDSL xDSL. 13 52 /, 1,5 2,3 /, . 26 /. VDSL - . , 300 1300 . , , - (, , ). VDSL , ADSL; , (HDTV), ..
VDSL :
;
, , .
VDSL . - . (). 300 VDSL , ADSL. VDSL (Very-High Digital Subscriber Line ) " " ADSL. VDSL . , VDSL, , : . VDSL ADSL, .
VDSL 52 /. , ADSL, 8 /.
, VDSL , , , , , ADSL.
VDSL :
;
;
;
;
.
VDSL (Very-High Digital Subscriber Line ) , ADSL. , ADSL, VDSL , . ADSL VDSL : 13 52 /, , 1,5 / . VDSL 26 / . VDSL 300 1,3 .
|
|
, , VDSL.
: .
FITL (Fiber In The Loop " "). FITL FTTA FTTZ:
FTTA (Fiber To The Apartment) ;
FTTB (Fiber To The Building) ;
FTTB (Fiber To The Curb) ;
FTTH (Fiber To The Home) ;
FTTO (Fiber To The Office) ;
FTTOpt (Fiber To The Optimum) / ;
FTTR (Fiber To The Remote) , , ;
FTTZ (Fiber To The Zone) .
VDSL ( xDSL) . , (, , ) , FTTC (Fiber to the Curb), - . , VDSL ( ).
, , , -, , -, .