CONTENTS

 1     Scope
 2     References
 3     Terms and definitions
        3.1     Definitions
        3.2     Terms defined in other Recommendations
 4     Abbreviations
 5     General optical safety considerations
 6     Procedures
        6.1     General
        6.2     Single-channel point-to-point SDH without line amplifiers
        6.3     Single-channel point-to-point SDH with line amplifiers
        6.4     Multichannel and OTN applications
        6.5     Bidirectional applications