MUX / . - - DXC. , , () , -, . SDH VC-n, ( ) .
3 . SMUX:
- : - :
- ( SDH). SDXC ( ).
,
- (routing) VC, ;
- (consolidation/hubbing) VC, /;
- (translation) , , (point-to-multipoint), "-";
- (grooming) VC, , , , VC VC, ;
- VC (test access), ;
- / (drop/insert) , /.
SDH.
" - " , /, 1+1, ( /).
, TDM
, , . , , 1+1, . " "
"", .
, SDH , , , , .
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"". SDH SDH (155 622 /). - 1+1, SMUX /: - , .