�1����
Scope�
�2���� References
�3���� Terms and definitions���
�4���� Abbreviations�
�5���� Reference models��������
������� 5.1���� Hypothetical reference performance
models for international 64 kbit/s connections����
������� 5.2���� Hypothetical reference performance
model for international primary and higher order paths����
�6���� Performance objectives�
������� 6.1���� Connections operating below the
primary rate��
������� 6.2���� Primary rate and higher bit rates�
�7���� Allocation principles����
�8���� Evaluation of error performance
events
������� 8.1���� Evaluation of ES/SES events from
in-service measurements�����
������� 8.2���� Evaluation of ES/SES events from
out-of-service measurements
������� 8.3���� Definition of ratios��������
�9��� �Performance limits � General considerations���
������� 9.1���� Relationship
between performance limits and objectives
������� 9.2���� Type of limits����
10���� Performance limits for bringing-into-service���
������ 10.1���� Calculation of the BIS limits�����
����� �10.2���� BIS limits values�
11���� Performance limits for maintenance����
������ 11.1���� Performance levels and limits����
������ 11.2���� Performance thresholds��
12���� Long-term quality monitoring/measurement���
13���� Effects of timing impairments on error performance���
14���� Availability and unavailability�
������ 14.1���� Definitions of available and
unavailable states��
������ 14.2���� Consequences for error performance
measurements�����
������ 14.3���� Inhibiting performance monitoring
during unavailable time������
������ 14.4���� Unavailability limits�����
Annex A � Example
applications of PO allocation from Tables 2a and 2b����
Annex B � In-service
ES and SES event evaluation criteria����
Annex C � Values for
bringing-into-service limits for international digital paths����
Annex D � Default
unacceptable performance level thresholds for international digital paths����