Title: Timing and synchronization aspects in packet networks
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Table of Contents minLevel 2
Summary
Defines network limits on SyncE and CES for both jitter and wander
Describes a modified synchronization chain to accommodate SyncE and packet-based timing
Describes general issues with packet-based synchronization
Defines test scenarios for packet-based timing systems (Appendix VI tests)
Status
- Current version: 3rd. Edition, August 2013, plus Amendment 1, January 2015, and Corrigendum 1, April 2016
- Download from: http://www.itu.int/ITU-T/recommendations/rec.aspx?rec=12015
- Enhancements in progress: definition of network limits for chains of enhanced SyncE clocks
Key Contents
Modified Synchronization Reference Chain:
- SyncE clocks (EECs) have identical performance to SECs, and can be used interchangeably
- Packet timing protocols (e.g. NTP or PTP) may replace a segment of the chain (typically the last)
SyncE Network Limits:
Performance Tests For Packet Timing:
