15 May
2016
15 May
'16
1:58 p.m.
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....