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Work item:
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G.8264/Y.1364 (2017) Amd. 2
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Subject/title:
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Distribution of timing information through packet networks - Amendment 2
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Status:
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Approved on 2024-01-13 [Issued from previous study period]
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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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-
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Supporting members:
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-
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Summary:
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Recommendation ITU-T G.8264/Y.1364 outlines aspects of distribution of timing information through packet networks and initially focuses on Ethernet networks. A number of methods may be used to transfer frequency which may be physical-layer based or protocol-layer based. This Recommendation provides information on architectural aspects of timing flows in Ethernet networks which will form the basis for future work related to time and phase transfer.
This Recommendation specifies the synchronization status message (SSM) protocol and formats for use with synchronous Ethernet. Adherence to the SSM formats specified in this Recommendation is required in order to ensure interoperability between synchronous Ethernet equipment involved in frequency transfer.
Amendment 2 to ITU-T G.8264 (08/2017) includes the following changes:
Add explanation on the use of the terms ETH and ETY in the conventions
Correction of references to tables 11-8 and 11-9 to refer to 11-7 and 11-8, respectively
Clarification of wording of the processing of SSM code with enhanced SSM code in 11.3.2.1
Change non-inclusive terms
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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:
2018-06-05 09:45:57
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Last update:
2024-02-21 10:36:59
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