Siemens SRA 4, Руководство пользователя, Страница: 34 / 50

1
-
P
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E
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IN
A
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F
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6
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G
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(
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2
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ig
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F
ig
.
1
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C
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it
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VC-4
STM-1
MSOH RSOH
POH
C-4
N1 K3 F3 H4 F2
G1
C2 B3 J1
261
5
1
3
261
9
AU-4
AUOH
J
1
Channel identification (path identifier)
B
3
Parity byte for BER detection in the channel
C
2
Indication: channel equipped/not equipped/not used
G
1
Channel status message for the transmitter
F
2
Subscriber messages
H
4
Indication of various connected frames (for special payload signals)
F
3
Subscriber messages
K
3
Byte used for the switching procedure in a multiplex section
N
1
Tandem connection monitoring function