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Work item: G.8272.2 Amd.2
Subject/title: Timing characteristics of coherent network primary reference time clocks - Amendment 2
Status: Approved on 2026-08-29 
Approval process: AAP
Type of work item: Recommendation
Version: -
Equivalent number: -
Timing: -
Liaison: ITU-T SG12, ITU-T SG16, Broadband Forum, ETSI ISG F5G
Supporting members: Microchip, DT, NTT, China Unicom
Summary: Recommendation ITU-T G.8272.2 specifies requirements for coherent network primary reference time clocks (cnPRTCs) suitable for time, phase and frequency synchronization in networks. These requirements apply under normal environmental conditions specified for the equipment. This amendment provides the following update: Edits to clause 6.1 including reference to [ITU-T G.8272] Appendix V Considerations on the use of GNSS for the PRTC.
Comment: -
Reference(s):
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Contact(s):
Lee COSART, Editor
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First registration in the WP: 2026-01-14 14:55:49
Last update: 2026-07-22 14:46:24