[time-nuts] Re: NTP via Passive Optical Network (PON)

[Pluess, Tobias]

This is actually a very interesting question. I have the impression that
the latency with PON is much lower than with DSL and other techniques, so
for this reason I wonder if the lower latency could, to a certain degree,
compensate for the jitter?

For example, before I had GPON FTTH internet, a ping google.com took some
~12ms. Now it is quite consistently just below 7ms. So while my speed is
the same, I would guess that now the latency is smaller somehow.


On Thu, 24 Jul 2025, 21:02 Kapp, Francois B. via time-nuts, <
time-nuts at lists.febo.com> wrote:

> I was wondering if anyone has measured, or has seen results of
> measurements of the effect of a passive optical network on time transfer
> over NTP (or PTP). Intuitively, the fact that return communications are
> time division multiplexed should insert some jitter in the round trip time
> - any pointers to more concrete information?
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