Table of Contents - G.9805 (2022) Amd. 2 (11/2025) -

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	Reference architecture of coexistence methods
	6.1	Wavelength coexistence using external CEx device
	6.2	Wavelength coexistence using MPM
	6.3	Wavelength coexistence using M:N splitter
Appendix I – Example of WDM1, WDM1r, CEx and CEMx characteristics
Appendix II – Methods for calculating required isolation for WDM/CE/CEM devices
Appendix III – Multi-PON module with integrated WDM
Appendix IV – Filter considerations for XG(S)-PON OLT and HSP OLT
Appendix V – Crosstalk between PON systems
	V.1	Crosstalk between coexisting PON system
	V.2	Preventing crosstalk
	V.3	Detecting crosstalk
	V.4	Managing crosstalk
Bibliography