CONTENTS

 1     Scope
        1.1     Application of this Recommendation
        1.2     Transport network layers
                  1.2.1     SDH transport networks
                  1.2.2     ATM connections
        1.3     Allocation of end-to-end performance
 2     References
 3     Definitions and abbreviations
        3.1     Abbreviations
        3.2     Terms and Definitions
                  3.2.4     Error performance events
                  3.2.5     Error performance parameters
                  3.2.6     Additional error performance event / performance parameter
 4     Measurement of the block
        4.1     In-service monitoring
        4.2     Out-of-service measurements
 5     Performance monitoring at the near end and far end of a path
 6     Error performance objectives
        6.1     End-to-end objectives
        6.2     Apportionment of end-to-end objectives
                  6.2.1     Allocation to the national portion of the end-to-end path
                  6.2.2     Allocation to the international portion of the end-to-end path
Annex A - Criteria for entry to and exit from the unavailable state
        A.1     Criteria for a single direction
        A.2     Criterion for a bidirectional path
        A.3     Criterion for a unidirectional path
        A.4     Consequences on error performance measurements
Annex B - Relationship between path performance monitoring and the block-based parameters
        B.1     General
                  B.1.1     Converting BIP measurements into errored blocks
                  B.1.2     Block size for monitoring SDH paths
                  B.1.3     Anomalies
                  B.1.4     Defects
        B.2     Estimation of the performance parameters
        B.3     Estimation of performance events at the far end of a path
Appendix I - Flow chart illustrating the recognition of anomalies
Appendix II - Applicability of ITU-T Recommendation G.828 to non-public networks