ITU-T G.8275.1 PDF

This Recommendation specifies a profile for telecommunication applications based on IEEE Std 1588™-2008 Precision Time Protocol (PTP). The profile specifies the IEEE Std 1588™-2008 functions that are necessary to ensure network element interoperability for the delivery of accurate phase/time synchronization. The profile is based on the full timing support from the network architecture as described in [ITU-T G.8275] and definitions described in [ITU-T G.8260]. The first version of the profile specifies the high-level design requirements, modes of operation for the exchange of PTP messages, the PTP protocol mapping, the best master clock algorithm options, as well as the PTP protocol configuration parameters.

NOTE The parameters defined in the first version of the profile have been chosen based on the case where physical layer frequency support is provided.

This Recommendation also specifies some aspects necessary for use in a telecom environment that are outside the scope of, and complement the PTP profile.