1 . 4
xDSL.
Internet , , .
, , .
, DSL (Digital Subscriber Line ).
xDSL:
1. ;
2. ;
3. () Internet;
4. ( Internet) ( ) ISDN ;
5. DSL 32 / 50 /, ;
6. xDSL . DSL ;
7. , , . DSL , Internet.
xDSL .
Downstream (/c) | Upstream (/c) | |
ADSL Asymmetric Digital Subscriber Line | 1,5 -24 | 0,5 3,5 |
HDSL High data rate Digital Subscriber Line | 1,544 - 2,048 | 1,544 - 2,048 |
VDSL Very High Digital Subscriber | 13-52 | 1,5 2,3 |
SDSL Symmetric Line Digital Subscriber Line | 2,048 | 2,048 |
. 1. xDSL
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1. ;
2. ;
3. ;
4. , Internet;
5. ( , , );
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6. (, , ).
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ADSL
ADSL (Asymmetric Digital Subscriber Line) , DSL.
ADSL , ( Internet, , ), . "" "-" (downstream) "-" (upstream ).
, .