. 5,5 , DSL . 5,5 - , , DSL .
, , 5,5 , DSL .
. (Local Exchange Carrier, LEC) , . DSL.
, . , , 5,5 . , , DSL, .
. LEC . DSL, DSL .
- . DSL , (. . ). , , .
Digital Loop Carrier (DLC) Subscriber Loop Carrier (SLC, , DLC). - DLC, DSL .
, - (mini-Remote Access Multiplexer, -RAM) DSL , DLC. -RAM , DLC, DSL.
, -RAM 5,5 , , -RAM. , , -RAM.
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: aDSL, R-DSL, ADSL Lite, IDSL, HDSL, SDSL, VDSL)
DSL , . , , , . , , , , ( ) ( ) .
DSL :
ADSL (Asymmetric Digital Subscriber Line )
R-ADSL (Rate-Adaptive Digital Subscriber Line )
G. Lite (ADSL.Lite) ADSL, 1,5 / 512 / 256 / .
IDSL (ISDN Digital Subscriber Line IDSN)
HDSL (High Bit-Rate Digital Subscriber Line )
SDSL (Single Line Digital Subscriber Line )
VDSL (Very High Bit-Rate Digital Subscriber Line )
ADSL
, , . , ( ), ADSL , () .. , . ADSL 1,5 / 8 / 640 / 1,5 /. ADSL 1,54 / 5,5 . 6 8 / 3,5 0,5 .
ADSL ( ). . ADSL . (Frequency Division Multiplexing - FDM). FDM "" , "" . "" . "" .
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ADSL , , , . , . ( POTS - Plain Old Telephone Service).
, , (.. , ..) . , . ADSL 3,5 - 5,5 0,5 .
, , ADSL, , , . 14,4 56 /. ISDN 64 / ( , 128 /.
ADSL , , .
ADSL . . ADSL "" 99% . . () ( 4 ), .
ADSL- :
,
ADSL-,
,
,
, .
ADSL- ( ) . 2 : Ethernet USB. , Ethernet- .
, : . , ADSL-. , .
, , ADSL-. , .
, , , . ADSL- () , ADSL. ADSL, " ".
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: USB- - ( USB) UTP 5- ( "" Ethernet). .
R-ADSL
R-ADSL , ADSL, . R-ADSL . , , .
RADSL xDSL-, . . , , . RADSL , DSL. RADSL . , , . ADSL , . , (.. ) , . ( ) . , , , . RADSL , ADSL.
RADSL :
;
.