, 30 VC 12. 12 .
H0 (664/) 12 (30×64/), VC 4 SDH.
PDH 3. (2+D), .
SDH, Ethernet 100/. Ethernet 0.3. . , SDH Ethernet.
H12 (30x64/), VC3 VC4 SDH. .
VC12 VC4, STM256 SDH.
( ), Δf/f0 = 10-8 , f0= 38.88.
(), VC4 VC12 SDH 3 . .
45 () 4.8 / 39.6/.
( AAL1), , ( G.711) 4 .
Ethernet 64000 H0 (6×64 /) 0. .
0 1 100 ppm 50 ppm ?
DCCr DCCm, STM4 STM64 RSOH MSOH.
1 , , .
- 0 , 20 1.
VC12 SDH, 480 , 16/.
Ethernet 100/, Ethernet SDH. .
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SDH, 24 . UI.
PON, 1:16. 0.5/ 1.31 0.3/ 1.55. 26. 0.25. PON.
, , 32.
Ethernet 10/, 20 . ISDN . .
, 1 VC4 16 VC4.
, 1. .
125
10-13.
H.324 . .
SDH STM4. . .
1 SDH. . .
DWDM 4- ( -), . 80 . . .
CWDM 4- ( -), . 16 . 8 . .
STM-16, OU 1 . 4×3807. U 48.971 .