3.0 Circuit Descriptions
RS8953B/8953SPB
3.5 HDSL Channel
HDSL Channel Unit
Figure 3-17. 2E1 Frame Format
2E1 FRAME
3503 OR 3505 QUATS
7Q
1Q
12 X 72.5 = 870Q 5Q
870Q
5Q
870Q
5Q
870Q
0,2Q
S
Q
1
S
Q
2
H
O
H
B
0
1
B
0
2
B
1
2
H
O
H
B
1
3
B
1
4
B
2
4
H
O
H
B
2
5
B
2
6
B
3
6
H
O
H
B
3
7
B
3
8
B
4
8
S
Q
1
S
Q
2
SYNC
WORD
SYNC
WORD
“6-”
“6+”
1/584 MS
ZN
1B
BYTE1
8 BITS
BYTE3
BYTE4
BYTE5
BYTE35
0 MS
CH1
CH2
6 MS
LEGEND:
BNN = PAYLOAD BLOCKS 1-48
HOH = HDSL OVERHEAD
SQN = STUFF QUAT
ZN BYTE2
BYTE6
BNN
145/1168 MS
BYTE36
Figure 3-18. 3E1 Frame Format
3E1 FRAME
2351 OR 2353 QUATS
7Q
1Q
12 X 48.5 = 582Q 5Q
582Q
5Q
582Q
5Q
582Q
0,2Q
S
Q
1
S
Q
2
H
O
H
B
0
1
B
0
2
B
1
2
H
O
H
B
1
3
B
1
4
B
2
4
H
O
H
B
2
5
B
2
6
B
3
6
H
O
H
B
3
7
B
3
8
B
4
8
S
Q
1
S
Q
2
SYNC
SYNC
WORD
WORD
“6-”
“6+”
1/392 MS
ZN
1B
BYTE1
8-BITS
BYTE4
BYTE5
BYTE6
BYTE7
BYTE34
BYTE35
BYTE36
0 MS
CH1
CH2
CH3
6 MS
LEGEND:
BNN = PAYLOAD BLOCKS 1-48
HOH = HDSL OVERHEAD (SW,EOC,CRC...)
SQN = STUFF QUAT
ZN
BYTE2
BYTE8
BYTE9
ZN = Z BITS 1-48
ZN BYTE3
BNN
97/784 MS
3-22
Conexant
N8953BDSB
CONEXANT [ CONEXANT SYSTEMS, INC ]
