Howtosignalprocessing
- What is PTP synchronization?
- How often does PTP synchronize?
- What is frequency synchronization?
- Is PTP more accurate than NTP?
- Is PTP compatible with NTP?
What is PTP synchronization?
The synchronization process involves ToD (Time of Day) offset correction and frequency correction between a master clock and a slave clock. The slave clock collects necessary data to synchronize its clock with master's clock through event messages.
How often does PTP synchronize?
PTP TimeStamp
There is a sync message transmitted typically every two seconds from the Master, and a delay request message from the Slave less frequently, about one request per minute.
What is frequency synchronization?
Frequency or timing synchronization is the ability to distribute precision frequency around a network. In this context, timing refers to precision frequency, not an accurate time of day. Precision frequency is required in next generation networks for applications such as circuit emulation.
Is PTP more accurate than NTP?
Precision Time Protocol
Overall, its structure is similar to NTP in that there are different levels within it and GPS satellites can serve as its time source. However, the major difference between NTP and PTP is that PTP is accurate to microseconds., meaning that it is more exact than NTP.
Is PTP compatible with NTP?
Programs from the linuxptp package can be used in a combination with an NTP daemon. A PTP clock on a NIC is synchronized by ptp4l and is used as a reference clock by chronyd or ntpd for synchronization of the system clock.
