Nokia 7210 SAS-Mxp - Central Synchronization Subsystem

7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
Figure 25: Messaging sequence between the PTP timeReceiver clock and PTP timeTransmitter clocks
6.5.7.1 PTP clock synchronization
The IEEE 1588v2 standard synchronizes the frequency and time from a timeTransmitter clock to one or
more timeReceiver clocks over a packet stream. This packet-based synchronization can be over IP/UDP
unicast or Ethernet multicast.
As part of the basic synchronization timing computation, event messages are defined for synchronization
messaging between the PTP timeReceiver clock and PTP timeTransmitter clock. A one-step or two-step
synchronization operation can be used; the two-step operation requires a follow-up message after each
synchronization message.
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