1. / SDH, , "-", ADM " " , "1+1"; ""; " 1+1" ( ).
2. "1+1" / 1:1.
3. " ()" SDH.
4. "1+1" ?
5. SDH / ( ).
6. ?
7. ?
8. SDH - , "-", " " 1+1 (1:1) / " ". .
9. - SDH 1+1 , . .
10. SDH " " , . .
11. SDH SDXC SDH . .
12. SDH , SDH 4 PDH.
13. ( ) PDH?
14. , SDH.
15. : , , , , ...
16. PDH SDH.
17. : ARCnet; Ethernet; FDD I; 100 VG-Any LAN; SDH; PDH; ; B - ISDN; WAN; LAN; MAN; SMUX; ; ADM; SDM; SLR; DS 0, l, 2, 3; E 1, 2, 3; T-n; STM 1, 4, 16, 64; STS; C-n; VC-n; TU-n; TUG; AU-n; AUG ...
1. SDH PDH SDH.
2. SDH.
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3. SDH.
4. SDH.
5. (10...15¢) .