Neither, nor. We have network in central part of USA. There some traffic is flowing. Monitoring equipment is located in Central Europe (there are plenty of reasons for placing it there). Signals from USA are backhauled via optical fibre cable to this monitoring equipment. Monitoring equpment represents NTP client which gets the time from NTP server also located in Central Europe. All signals from network in States are timestamped at their arrival at the interface of monitoring equipement. Now, as the timestamp should show the time as the signals were indeed on wire in States and not the time they were on wire in States + network latency time the clock on the monitoring equipment must be slightly behind (150 ms) from the real time. So how we intend to do this is to feed the monitoring equipment with the time from NTP server with GPS unit locally attached with the the fudge value of -150 ms. Is it workable approach?
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