|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Non-GPS derived timing sources (was Re: NTp sources that work in adatacenter)
On Sat, 31 May 2003, Peter Lothberg wrote: > Time2.Stupi.SE and Time4.Stupi.SE are both stratum-1 accessable through > the Internet, tracable to UTC-SP (part of TAI) without use of GPS or slaving > to CDMA (that slaves to GPS). I was wondering about everyone using GPS-derived timing sources last week. I looked at 23 different American backbone providers and I think 19 were traceable back to a GPS clock. 3 were traceable back to USNO/NIST NTP servers on the Internet synched to their respective master clocks. And one claimed to be using the ACTS dialup time service. I don't expect GPS to spin out of control soon, but I did wonder how hard it is to find a another reliable clock source of similar quality to GPS to double check GPS. US clocks account for 40% of the input to TAI.
|