[ntp:questions] TrueTime refclock Users?

Kevin Oberman oberman at es.net
Fri Apr 20 14:27:37 UTC 2007

Just a quick note to those thinking about tinkering with the TrueTime

It is used by the currently shipping Endrun Technologies clocks. These
are CDMA clocks and have a "native" mode, but there is no NTP driver for
that mode and they recommend running either Trimble or TrueTime
emulation mode. Since I had several problems making the Trimble
emulation work, we use the TrueTime driver in conjunction with kernel
PPS (FreeBSD) with great success.

Both ESnet and Internet2 make use of these clocks and I'm sure that
there are many others so try not to break anything and don't assume that
it's mostly obsolete.
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751
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