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Work item:
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G.8272.1 (2024) Amd.2
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Subject/title:
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Timing characteristics of enhanced primary reference time clocks - Amendment 2
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Status:
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Approved on 2026-08-29
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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-
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Equivalent number:
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-
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Timing:
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-
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Liaison:
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ITU-R, IEEE1588, ATIS SYNC, IEEE 802.1,3GPP, IEEE P1952
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Supporting members:
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-
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Summary:
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Recommendation ITU-T G.8272.1 specifies the requirements for enhanced primary reference time clocks (ePRTCs) suitable for time, phase and frequency synchronization in packet networks. These requirements apply under the normal environmental conditions specified for the equipment.
This amendment provides the following updates:
Adds the synchronous Ethernet interface along with associated performance requirements.
Edits to clause 6.1 including reference to [ITU-T G.8272] Appendix V Considerations on the use of GNSS for the PRTC.
New note added to clause 8.2.
Note added to Appendix I.
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Comment:
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-
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Reference(s):
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Historic references:
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
2025-05-21 10:51:29
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Last update:
2026-07-22 14:41:47
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