Wireless data propagation time

I need a non-continuous low speed (

Reply to
George
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Reply to
John Larkin

On a sunny day (Sat, 13 Oct 2012 11:27:25 -0700 (PDT)) it happened George wrote in :

AFAIK there is no guarantee with internet, packets may even be routed via an other country, even if you connect to next door. Normally it will be fast however.

In the old days you could rent a fixed telephone / audio line, not sure that is still possible.

How about your own WiFi (max) or something like that with a directional beam on the roof?

Why is the 300 ms so important? No way around that?

Reply to
Jan Panteltje

Or packet-based wires/fibers, which is what wireless connects to.

And I (at the moment) get 23-42 ms from the US East coast to John's company on the West coast. Depending what else is going on, delay can exceed (though it rarely does) 1000ms over half a mile.

Best if you can work with the realities of how networks work (can be, often are quick - can be slow, can be lost completely.)

At the moment, a device on my local net about 1/4 mile away has times between 7 and 84ms - based on that particular pair of samples (8 packets each), it can be twice as slow to go 1/4 mile as to go 2500 miles. Welcome to networks 101.

Your likely options are to get away from a hard 300ms limit, or to figure some way to verify transit times when you are doing "whatever it is you need to do" and be able to re-do it if the time slips while you are doing it. Most of the time it will probably work, but guaranteeing it is not really in the cards via normal networking channels.

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Ecnerwal

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whit3rd

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josephkk

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