[ntp:questions] NTP vs RADclock?

[David Woolley]

skillzero at gmail.com wrote:

> 
> 2. Separate offset sync from rate sync. What I wasn't sure about is
> why the rate sync would be so much more stable than offset sync since
> they seem to both come from the same packet exchanges. Is the
> advantage that the rate sync is smoothed over time whereas the offset
> sync isn't?
> 
I seem to remember that NTPV3 had a fast loop for phase and a slower 
loop for frequency.