[Hampshire] voip over AAISP bonded ADSL lines

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Author: Paul Maunders
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To: hampshire
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Subject: [Hampshire] voip over AAISP bonded ADSL lines

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> I've always been curious, can you run VoIP calls over these sort of
> set-ups without hiccups or delays in the audio? I always assumed that
> this would happen as the packets are reordered?
> Simon


We have had a lot of *fun* with this ourselves :)

If the lines have widely varying latencies then yes this is definitely a
problem, the audio sounds horrible. However, if the latencies are very
similar then the sound is perfect.

Out of our 4 lines, 2 of them have very low latency, and the other 2 are
not so good, so AAISP have allocated us an extra range of IPs that is
only routed over the 2 good lines. Similarly, we have setup our linux
router in our office to only route traffic from this subnet out over the
same 2 lines. Our asterisk server lives in this range.

Our main IP range for web browsing and office workstations is still
routed over all 4 lines to give us the maximum throughput.

So in short, yes you can run VOIP over bonded ADSL lines, as long as the
lines have closely matching speeds and latencies.

Paul