1 Scope
1.1 Application of this Recommendation
1.2 Transport network layers
1.2.1 PDH and SDH transport networks
1.2.2 ATM connections
1.3 Allocation of end-to-end performance
2 References
3 Abbreviations
4
Terms and definitions
4.5 Error performance events for paths
4.6 Error performance events for connections
4.7 Error performance parameters
5
The measurement of the block
5.1 In-service monitoring of blocks
5.2 Out-of-service measurements of blocks
6
Performance assessment
6.1 Implications for error performance measuring devices
6.2 Performance monitoring at the near end and far end of a path
7
Error performance objectives
7.1 End-to-end objectives
7.2 Apportionment of end-to-end objectives
7.2.1 Allocation to the national portion of the
end-to-end path or connection
7.2.2 Allocation to the international portion
of the end-to-end path or connection
Annex A – Criteria
for entry and exit for the unavailable state
A.1 Criteria for a single direction
A.2 Criterion for a bidirectional path or connection
A.3 Criterion for a unidirectional path or connection
A.4 Consequences on error performance measurements
Annex B –
Relationship between PDH path performance monitoring and the block-based parameters
B.1 General
B.1.1 Block size for monitoring PDH paths
B.1.2 Anomalies
B.1.3 Defects
B.2 Types of paths
B.3 Estimation of the performance parameters
B.4 In-service
monitoring capabilities and criteria for declaration of the performance
parameters
B.5 Estimation of performance events at the far end of a path
B.6 Differences between this Recommendation and ITU-T Rec. M.2100
concerning path performance
B.6.1 General
B.6.2 Allocation methodology
Annex C –
Relationship between SDH path performance monitoring and the block-based parameters
C.1 General
C.1.1 Converting BIP measurements into errored
blocks
C.1.2 Block size for monitoring SDH paths
C.1.3 Anomalies
C.1.4 Defects
C.1.5 Measurement of performance events using
aggregate parity error counts
C.2 Estimation of the performance parameters
C.3 Estimation of performance events at the far end of a path
Annex D –
Relationship between cell-based network performance monitoring and the block-based
parameters
D.1 General
D.1.1 Block size for monitoring cell-based
paths
D.1.2 Anomalies
D.1.3 Defects
D.2 Types of paths
D.3 Estimation of the performance parameters
D.4 Estimation of performance events at the far end of the path
Appendix I – Flow
chart illustrating for digital paths the recognition of anomalies, defects, errored blocks, ES and SES
Appendix II – Bit
errors and block errors, merits and limitations
Appendix III –
Applicability of this Recommendation to non-public networks