Sdh - Lower-Order Path Overhead - EXFO FTB-8510B Guia Del Usuario

Glossary

SDH - Lower-Order Path Overhead

SDH - Lower-Order Path Overhead
V5: VC Path Overhead
The V5 byte provides the same functions for VC paths overhead that the B3,
C2, and G1 bytes provide for STM paths.
Note: If the signal label in V5 (bits 5, 6, and 7) is 101 the contents of the extended
signal label is valid and contains in a 32 bit frame multiframe. See K4
Structure shown below.
K4 Structure
J2: Path Trace
The J2 byte is used to repetitively transmit a Lower-Order Access Path
Identifier so that a path receiving terminal can verify its continued
connection to the intended transmitter.
N2: Network Operator Byte
The N2 byte is allocated for Tandem Connection Monitoring for the VC2,
VC-12, and VC-11 level.
641
SONET/SDH Application