Table of Contents - G.876 (2021) Amd. 3 (03/2026) -

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
	5.1	Information modelling conventions
6	Optical media layer management requirements
	6.1	Fault management
	6.2	Configuration management
	6.3	Performance management
7	Media information model for the optical media layer and signal
	7.1	High-level overview
	7.2	UML model class diagrams
8	Optical media layer UML information model
Appendix I – Use cases for OTSiA connection management
I.1
I.2
Appendix II – Optical media network examples
Appendix III – Model examples and analysis
	III.1	Use case 1 – In-line amplifiers
	III.2	Use cases 2 – Reconfigurable optical add/drop multiplexer (ROADMs)
	III.3	Use case 3 – Point-to-point interfaces
Appendix IV – OTS, OMS, OTSiA and OCh protection model fragments
Bibliography