, 2 /. 30 ᒺ 30 64 / . , , 8 /.
' , . ֳ . , ᒺ 4 30, 120, 480, 1920 ..
1920, 2000 . , , , , . . , , . 120 33- .
, . , . . . . (PDH). , . , .
SDH- ᒺ 155 /.
STM-1. (frame) 9 270 . 9 , 9 . . SOH (Section Over Head). , . RSOH, . 9 4 . . 125 , 8 .
|
|
SDH- .
г | STM | |
STM-1 | 155.520 | |
STM-4 | 622.080 | |
STM-16 | 2468.320 | |
STM-64 | 9953.280 |
:
. , 30 -4 260 260 9 , STM-1, STM-4, STM-8, STM-16 1 , 261 . VC-4. , AU-4. , 2 /. -12 VC-12.
STM-1 63 VC-12. PTR 12.
ᒺ , 155 /. 3 12 ᒺ . 7 TUG-2 TUG-3. 3 TUG-3 ᒺ VC-4.
ᒺ STM-1.
, , , , 480 ( ) 120 ( ). PTR , -1. ADM.