A Precision Time Protocol (PTP) clock is compliant with the IEEE 1588 V2 protocol and can realize synchronization of frequency and time. Hence, the scheduled synchronization index of the entire network is greatly improved. The PTP clock is mainly used in the preceding scenarios and provides precise time synchronization to meet service requirements.
The IEEE 1588 standard has made great progress in time precision. IEEE 1588 is usually referred to as PTP, that is, Precision Time Protocol. A PTP clock can realize synchronization of frequency and time, and the precision of the PTP clock is accurate to within nanoseconds. Synchronization of frequency and time based on the IEEE 1588 protocol is one of the technical revolutions and innovations that carrier-class IP networks make for transformation. The equipment that has the PTP clock function can realize synchronization of frequency and time network-wide on the synchronous optical transmission network. Telecommunications networks need to carry services of different types. Certain services require time synchronization and high precision. For example, the CDMA system and unknown location service. The PTP clock is mainly used in the preceding scenarios and provides precise time synchronization to meet service requirements.