On Mon, 29 Mar 2010 09:43:25 PDT, todd glassey said: > Why would you want a S-0 Clock??? You are not a time-space lab, and so > you would want something like a stratum-2 time source which comes from a > provable provider. There are laws by the way on what are official and > non-official sources of time. In the US for instance these are 15 USC > 271 and 272, and the right to deploy the time is codified in 15 USC 260 > so which source of time is used is important.
Actually reading sections 260, 271, and 272 doesn't seem to actually talk much about it, and unless you really care in a legal sense if your time is derived from a WWVB signal or a GPS clock, it probably doesn't matter. OK, maybe if you're listening to the Canadian radio signal, or the European competitor to the GPS constellation it matters. Does anybody *really* care, given that all these sources are usually synced to each other well enough that it doesn't matter accuracy-wise? The reason he wants a stratum-zero clock source is because when he sets up his server that reads from that clock, it will in NTP-speak end up being a stratum-1 clock, which is what he wants to deploy, then when he distributes it to other servers, they'll become the stratum-2 clocks you mention.
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