CONTENTS

�1���� Scope
�2���� References
�3���� Abbreviations
�4���� Criteria for detection and clearance of a Loss of Signal (LOS) defect
�5���� Criteria for detection and clearance of an Alarm Indication Signal (AIS) defect condition
�6���� Criteria for detection and clearance of a Remote Defect Indication (RDI) defect
Appendix I � Other criteria that have been used for the detection/clearance of LOS, AIS or RDI defects
������� I.1���� LOS defect detection/clearance criteria
������� I.2���� AIS defect detection/clearance criteria
������� I.3���� RDI defect detection/clearance criteria