Table of Contents - G.988 (2022) Amd. 2 (05/2025) -

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 model and terms
	6.1	OMCI in the access network
	6.2	ONU functions
	6.3	Support of multicast connection
	6.4	Voice over Internet protocol management
7	Requirements of the management interface specification
	7.1	Configuration management
	7.2	Fault management
	7.3	Performance management
	7.4	Security management
8	Protocol-independent MIB for the OMCI
	8.1	Managed entities
	8.2	Managed entity relation diagrams
9	MIB description
	9.1	Equipment management
	9.2	ANI management, traffic management
	9.3	Layer 2 data services
	9.4	Layer 3 data services
	9.5	Ethernet services
	9.6	This clause is intentionally left blank
	9.7	xDSL services
	9.8	Time division multiplex services
	9.9	Voice services
	9.10	Premises networks
	9.11	This clause is intentionally left blank
	9.12	General purpose managed entities
	9.13	Miscellaneous services
	9.14	Mid-span passive optical network reach extender
	9.15	RS232/RS485 interface service
	9.16	ITU-T G.989.3 TWDM and ITU-T G.9804.2 TWDM/TDM PON
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10	This clause is intentionally left blank
11	ONU management and control protocol
	11.1	Baseline and extended messages
	11.2	Common message characteristics
Annex A – OMCI message syntax and common features
	A.1	General
	A.2	Extended message set
	A.3	Baseline message set
Annex B – OMCI in ITU-T PON systems
	B.1	Establishing the ONU management and control channel (OMCC)
	B.2	OMCI handling within the ONU
Annex C – OMCI in Ethernet PON systems
	C.1	Establishing the ONU management and control channel (OMCC)
	C.2	Encapsulating OMCI messages in Ethernet frames
	C.3	Relationship between the OMCI and OAM defined in clause 57 of [IEEE 802.3]
	C.4	Adaptation of the G-PON information model to EPON
Appendix I – OMCI common services
	I.1	ONU MIB management
	I.2	Equipment management
	I.3	Software upgrade
	I.4	Performance monitoring
Appendix II – G-PON mechanisms and services
	II.1	Layer 2 data service according to [b-BBF TR-156]
	II.2	Dual-managed ONUs
	II.3	Traffic management
	II.4	Voice services
	II.5	Extended layer 2 data service model
Appendix III – This appendix is intentionally left blank
Bibliography