PTP

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Precision Time Protocol is an IP network protocol distribute accurate time around an IT network. It is defined in IEEE Std 1588-2 with SMPTE ST 2059 building on that to define profiles used in media applications. SMPTE ST 2059 describes how PTP time can be used as a replacement for Black and Burst, Digital Audio Reference, Timecode etc in a media facility. The timing of all these signals are derived from the SMPTE Epoch defined in that standard.

See also: SMPTE ST 2059, SMPTE Epoch, IEEE 1588, PTP Grand Master