Precision Time Protocol/PTP IEEE 1588

Used to synchronize clocks throughout a computer network. Clock accuracy of sub-microsecond on LANs. Designed for achieving accuracies on local network beyond those attainable by NTP. Useful at places & on machines where having a GPS based receiver is not practical due to circumstances

IEEE Defines if as: “Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems”