SDH.
SDH, SDH. SDH. - , SDH.
SDH, , : , , , . , :
- , SDH - , - ;
- / / - , / - ADM, , - , ;
- , , - , -, - - DXC;
- - ( ) - , ;
- () , , - , - , LAN;
- SDH - , - , , , , , ..
.
. SDH .
SDH , , PDH . , , .. , . SDH - SMUX, , . , , SDH : /.
TM SDH , PDH SDH (.3.1.). , .. , , .. .
/ ADM , (.3.1.). / . , , ADM , ("" "") . , ( ) . ADM .
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. 3.1. (SMUX):
/ ADM.
, - , STM-N (.3.2.).
SDH . 15 - 40 . 1300 40 - 80 . - 1500 .
. 3.2. .
. SDH, . .3.3., , TU , . , , , , (.3.4.), . , , , .. , (.3.4.).
- SDXC, , () STM-N (.3.5). , TU TU. .
. 3.3. / .
. 3.4. / .
. 3.5. .
, :
--- (routing) VC, ROH ;
--- (consolidation/hubbing) VC, /;
--- (translation) , , " - ";
--- (drooming) VC, VC VC, ;
--- VC, ;
--- / (drop/insert) , /;
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SDH.
SDH. . .