I have been struggling a whole day to understand the real differences of Precise Time Protocol (IEEE 1588) and Synchronous Ethernet (syncE) and their role in the network. Greatly appreciated if you help me.
So, my questions:
1- Does the PTP synchronize both time and frequency over the network? I've read somewhere that PTP is able to synchronize both time and frequency, but I can't understand how frequency get synchronized by packets?
2- In case synchronization is necessary, can one of these protocols synchronize network? for example, just using SyncE suffices for synchronization? Or both protocols are necessary? Maybe each protocol works in a specific and separate part of a network?
3- Is Grand Master clock (PTP term) the same as Primary Reference Clock ( SyncE term)? Are they one device in a network? Equivalently, can we have this mapping for all PTP devices and SyncE devices?