The Precise Networked Clock Synchronization (PNCS) Working Group, also known as P1588 Working Group, is charged with the maintenance and any future revisions of the IEEE 1588 Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems also known at Precision Time Protocol (PTP).

Sponsoring Standards Committee

Sponsored by the IEEE Instrumentation and Measurement Society, Technical Committee on Sensor Technology (TC-9).

Current Activities

  • The P1588 Working Group is working on six projects to develop amendments to IEEE Std 1588-2019, described in the Project Authorization Requests (PARs) approved by the IEEE-SA NesCom in September 2020, see more in Active Projects.
  • Outreach activities aim at promoting the 2019 edition of the standard and include preparation of articles for various industry sectors and a logo for the Precision Time Protocol.

P1588 Subcommittees

Various PAR Study Groups have been charged to provide information and specific to come up with amendment PARs for IEEE Std 1588-2019. Each P1588 Subcommittee consist of a subset of P1588 WG members that are interested in the specific aspect. The P1588 Subcommittees prepare and recommend proposals for consideration by the P1588 WG.

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The PTP Icon (visible in the page header) by the IEEE 1588 website is licensed under a Creative Commons Attribution 4.0 International License.

P1588 Working Group Officers

Douglas Arnold

Vice Chair
Rodney Cummings

Silvana Rodrigues

John MacKay

I&M Society TC-9 Sponsor
Kang Lee

IEEE Program Manager
Vanessa Lalitte

Contact to P1588 Officers

Events 2022

March 13-16: WSTS 2023, Vancouver, Canada


30 Oct – 2 Nov: ITSF 2023, Antwerp, Belgium

IEEE1588-2019 amendments

1588b-2022 – PTP Mapping for Transport over the OTN
1588g-2022 – Master-Slave Optional Alternative Terminology