I've got two customers on the same broadband provider. Same Asterisk box on my end.
Same CLEC.
One has an IAXy and the other has an Asterisk box with an array of devices
(Grandstream, Cisco, ATCOM, xten, etc.).
The people behind the Asterisk box have had no audio quality issues. The person with
the IAXy often encounters an echo.
The echo is only heard on the remote side and it only contains the remote caller's
voice. This echo has been heard with the
remote side being varying LECs. The echo is not always there. I'd almost say that
the echo is not there more than it is.
Troubleshooting next step?
I haven't changed out the IAXy because I don't have any other ATAs to put in place.
Best guess... the iaxy doesn't have an echo can in it, and probably relies
on asterisk to do the cancellation.
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