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