> I thought that only worked when transmitted over a serial link, i.e. ATM
> or DVB.
You thought wrong.
> It is not so effective on packet based links such as Ethernet.
All headend distribution systems these days are Ethernet-based. It is
incredibly effective.
> I have never heard of those timestamps being used to synchronize
> multiple endpoints.
I'm sure there are many thing in the Universe of which you have not heard.
This does not mean they do not exist.
> I have only ever seen them used to do synchronization within each
> device in the chain.
This leaves us with one of two possible situations :-
- Timestamps aren't used in this way
- You are not omniscient.
Given that I've worked on these systems for quite a few years, I know
which one I believe to be true.
Vic.
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