ITU-T G.8261 (SyncE Network Limits) One-Page Summary

Title: Timing and synchronization aspects in packet networks

On this page:

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

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: