Cost-effectivenesss of highly-accurate clocks for NTP

Valdis.Kletnieks at vt.edu Valdis.Kletnieks at vt.edu
Sun May 15 17:58:14 UTC 2016


On Sun, 15 May 2016 15:21:02 -0000, Mel Beckman said:
> But a more critical deployment of rubidium clocks is in cash-strapped public
> safety institutions, such as local police dispatch centers. Timing is crucial
> for the squad car communication systems, which these days are all digital,
> based on wireless T1/T3 trunks to remote repeaters. The clocking on these
> trunks can't drift much before voice communication fails due to repeater
> outages. The telecom gear has OXCO clocks that can provide a few hours
> holdover. A rubidium clock onsite provides coverage for longer outages.

That may be the scariest entry on "Things I was not aware of" for quite
some time....
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