3 ms·
PTP is mostly used for industrial control systems that need to have very precisely synchronized timing. The precision you can achieve depends a great deal on th
by _moof 2y ago
PTP is mostly used for industrial control systems that need to have very precisely synchronized timing. The precision you can achieve depends a great deal on the clock hardware you're using. Network hardware, i.e. whether timing in network hardware is deterministic, also plays an important role. So the question is less "what can PTP do," it's more "what can my hardware do with PTP." Fundamentally PTP is just measuring network latency and applying that correction. But the quality of that measurement is critical, and there's nothing PTP can do to mask a crummy oscillator or a switch with non-deterministic timing.
- sciencesama 2y agoYou will be amazed how many things ptp ! Having ptp signals to test networks is a god send many errors are due to wrogn timing syncs ! Spirent loves ptp ! They partnered a lot with calnex !! We saw 80% data base write miss reduction in postgres once we started using ptp master clock across servers !
- jpc0 2y agoFrom my industry PTP is used for video and audio sync down to single sample accuracy for audio. See AES67/SMPTE ST 2110/IPMX.
- immibis 2y agoPTP is used in cellphone networks to coordinate radio timeslots between multiple base stations. They need at least microsecond accuracy.
- ssl-3 2y agoIn my little universe, PTP gets used for audio-over-IP systems like AES67, Dante, and AVB, which in turn get used for stage and studio (both very big and also quite small). These systems are commonly used to trunk audio between points. Using them and a strand or two of glass or a cat6 cable is most of all that is needed to distribute dozens (or hundreds, and potentially thousands) of low-latency uncompressed audio signals. PTP is part of how latency is kept low, and audio in-phase (which is a task that, itself, requires accuracy on the order of microseconds).