�1���� Scope����������
������� 1.1���� Application of this Recommendation��
������� 1.2���� Transport network layers���������
������� 1.3���� Allocation of end-to-end performance��������������
�2���� References���������������
�3���� Terms and Definitions����������
�4���� Abbreviations����������
�5�� ��Measurement of the block
������� 5.1���� In-service monitoring�
������� 5.2���� Out-of-service measurements��������������
�6���� Performance monitoring at the near end and far end of a path���������
�7���� Relationship between path performance monitoring and the block-based
parameters����������
������� 7.1���� General������������
������� 7.2���� Estimation of the performance parameters�����
������� 7.3���� Estimation of performance events at the far end of a path�������
�8���� Error performance objectives�����������
������� 8.1���� End-to-end objectives���������������
������� 8.2���� Hypothetical reference optical path����
������� 8.3���� Allocation of end-to-end performance objectives��������
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
Appendix I � Flow chart illustrating the recognition of anomalies, defects,
errored blocks, and SES����
Appendix II � Example of OTN layer network trails����
Bibliography����