I would seriously doubt that you can actually squeeze 12 channels through
that dsl and obtain anything reasonable for quality, regardless of which
asterisk codec you choose. But, it certainly would not be that hard to
test it and validate assumptions.


It would be wiser to know that it has a good chance of working rather than "let's do it anyway" :-) I was wondering if anybody on the list has similar experience with lots of channels / little bandwith / IAX trunking.

If that dsl is used for anything else (including hackers/scanners hitting
the IP associated with the circuit), quality will vary. Don't forget to
add the IP packet overhead to the codec bandwidth estimates.


Of course if somebody starts to flood the pipe with bogus traffic, sound will be garbage... but then again it could be true with any kind of public internet connection. It's just that bigger pipes are harder to flood :-/

For the IP/UDP overhead, isn't it something IAX2 trunking is supposed to be good for?

Cheers,
Jean-Michel.

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