Although IEEE 1588v2 can be used on a network that is not PTP-aware, the use of PTP-aware network elements (boundary clocks) within the packet switched network improves synchronization performance by reducing the impact of PDV between the grand master clock and the slave clock.
The grand master clock is the master clock for the network. The best master clock is the clock that the slave clock selects as its master. For example, the slave clock’s best master clock may be a boundary clock, which is connected to a grand master clock.
A 7705 SAR equipped with a GNSS receiver can function as a grand master clock.
The performance objective is to meet the synchronization interface maximum time interval error (MTIE) mask. Similar to ACR, the number of factors with the PSN contributes to how well PTP can withstand, and still meet, those requirements.