Table of Contents - G.709.1 (2024) Amd. 1 (08/2024) -

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
6	Introduction and applications
	6.1	Short-reach FlexO interfaces
	6.2	Long-reach FlexO interfaces
7	Structure and processes
	7.1	Basic signal structure
	7.2	Processing and information flow
8	FlexO frame and maintenance
	8.1	Frame structure
	8.2	Multi-frame structure
	8.3	Bit rates and frame periods
	8.4	FlexO-x(e) frame structure
	8.5	FlexO maintenance
9	Overhead
	9.1	Alignment mechanism
	9.2	Basic overhead (BOH) description
	9.3	Extended overhead (EOH) description
10	FlexO mapping procedures
	10.1	BMP mapping of OTUCn client into FlexO-n
	10.2	GMP mapping of Ethernet clients into FlexO-ne
	10.3	GMP mapping of OTUCn clients into FlexO-n
	10.4	FlexO-n group alignment and deskewing
	10.5	FlexO payload PRBS test pattern
Annex A – FlexOsec encryption and authentication
	A.1	GCM-AES-256 frame payload encryption
Annex B – Applying generic mapping procedure principles in a FlexO-n(e)
	B.1	Applying GMP in a FlexO-n(e)
Annex C – Transporting Ethernet client and Regen local degrade and remote degrade
	C.1	Ethernet client CSTAT LD/RD
	C.2	Ethernet client CSTAT and Regen RSTAT LD/RD
Appendix I – Example short-reach applications
	Page
Appendix II – Example long-reach applications
Bibliography