Siemens SRA 4 User Manual page 40

1 - PRELIMINARY INFORMATION
Fig. 1.10
1
P
9
O
H
1 12
8 I 96 I CRRRRROO
9
W
BLOCK 1
1 12 1
8 R 96 I 8 R
9
Y Y
BLOCK 11 BLOCK 12
= RRRRRR C1 C2
1-22
Loading a 140 Mbit/s signal into a VC-4
260
C-4
9 LINES X 13 COLUMNS X 20 BLOCKS
1 12 1 12 1
96 I 8 R 96 I 8 R
X Y
Y
BLOCK 2 BLOCK 3 BLOCK 4
12 1 12 1
96 I 8 R 96 I CRRRRROO
Y X
BLOCK 13 BLOCK 14
I = INFORMATION BIT
R = FIXED STUFFING
S =STUFFING OPPORTUNITY
O = OVERHEAD BIT (=R)
C = STUFFING MESSAGE
VC-4
12 1 12 1 12
96 I 8 R 96 I CRRRRROO 96 I
Y X
BLOCK 5 BLOCK 6
12 1 12 1 12 1
96 I 8 R 96 I 8 R 96 I
8 R
Y Y Y
BLOCK 15 BLOCK 16 BLOCK 17
CCCCC = 00000 : S=I
CCCCC = 11111 : S=R
W = IIIIIIII
X = CRRRRROO
Y = RRRRRRRR
Z = IIIIIISR
SRA 4 - 6/7/8/10/11/13 GHz (WB ODU) - UMN
1 12 1 12 1 12
8 R 96 I 8 R 96 I 8 R 96 I
Y
Y Y
BLOCK 7 BLOCK 8 BLOCK 9
12 1 12 1 12
96 I
96 I CRRRRROO 8 R 96 I
X Y
BLOCK 18 BLOCK 19
911-381/02C0000 - Issue 3, July 2004
1 12
96 I
CRRRRROO
X
BLOCK 10
1 12
96 I
IIIIII SR
Z
BLOCK 20