Overhead bytes Function Processing
NU National use 11111111
The next table shows the processing of the POH (Path Overhead) of VC-12:
Overhead bytes Function Processing
V5 (bit 1 to 2) VC-12 BIP-2 error checking Yes
V5 (bit 3) REI path (FEBE) Yes
V5 (bit 4) RFI path Fixed to 0
V5 (bit 5 to 7) Label of VC-12 path Yes
V5 (bit 8) RDI path (FERF) Yes
J2 VC-12 Trace identifier Yes
Z6 Connection/monitoring Fixed to 0
K4 (bit 1 to 4) VC-12 APS path Fixed to 0
K4 (bit 5 to 6) Reserved Fixed to 0
The next table shows the processing of the POH of VC-3:
Overhead bytes Function Processing
J1 VC3 trace identifier Yes
B3 Path bit error monitoring (BIP-8) Yes
C2 Path signal label Yes
G1 REI/RDI path Yes
F2 User channel Fixed to 0
F3 User channel Fixed to 0
H4 Multiframe indicator Fixed to 11111111
K3 (bit 1 to 4) VC-4 APS path Fixed to 0
K3 (bit 5 to 6) Reserved Fixed to 0
Z5 Network control Fixed to 0
The next table shows the processing of the POH of VC-4
Overhead bytes Function Processing
J1 VC4 trace identifier Yes
B3 BIP-8 path Yes
C2 Path signal label Yes
Technical Specifications
System specifications
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10-12
Alcatel-Lucent - Proprietary
See notice on first page
365-312-801R7.2
Issue 3, May 2007
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