Table of Contents - G.8274 (11/2025) - Architecture and requirements for packet-based time and phase distribution

1	Scope
2	References
3	Definitions
4	Abbreviations and acronyms
5	Conventions
6	General introduction to packet-based time/phase distribution
	6.1	Requirements for packet-based time and phase distribution
7	Architecture of packet-based time/phase distribution
	7.1	Packet-based time and phase distribution
	7.2	Time/phase protection aspects
	7.3	Packet network partitioning
8	Resiliency aspects
9	Management aspects
Annex A – Time/phase models based on ITUT G.805
Appendix I – Architecture for time and phase distribution over a packet network  providing PTS at the protocol level
	I.1	Architecture for PTS
Appendix II – An example of PRTC switching by the alternate BTCA in a ring network
Appendix III – Deployment examples and the use of partially aware deviceTypes
Appendix IV – cnPRTC deployment scenarios
Appendix V – Flexible synchronization network based on cnPRTC
Appendix VI – UTC usage in timing and synchronization networks
	VI.1	UTC and UTC(k) laboratories
	VI.2	Methods for telecommunication network UTC supply
	VI.3	UTC performance considerations
	VI.4	ITU-T specified primary reference clock functions
	VI.5	ITU-T specified interfaces and UTC(k)
	VI.6	Performance engineering
	VI.7	Reliability engineering
Bibliography