Has anyone tried FreePBX or its variants over Satellite Internet?

General Help
1

Just wondering if anyone has tried FreePBX or any of its variants over a static satellite Internet connection. I will have the opportunity in the Spring to try such in a wilderness area but we worry about latency in a sat connection and how that might affect the call, its quality etc.

We figure that the Satellite is geo-synchronous at an altitude of about 26.4K miles. 4 round trips (up and back twice…), so a normal hello being transmitted and answered might require 105760 miles of speed of light transmittance. Light travels at a speed of 186K miles/second. If the total 4 X satellite-only path is 106K miles, the time for this satellite-only delay is 106/186 X 1 second or 0.57 seconds. So the theoretical best lag, assuming zero Internet server exchange times (which is a bad assumption), would be about 600 mSecs. We could get times of 1 second which might be bad.

Just thought I’d ask before hand what we might expect if anyone has tried it.

Thanks.

2

You are absolutely right in your analysis, anything more than about 120 milliseconds and a duplex voice solution approaches unacceptability subjectively . You need to think of that link as a simplex (one way at a time) communication path for voice much like an old fashioned shortwave link. (been there, done that)