[Asterisk-Users] Echo canceller on TE406 & Asterisk

[Eric Bishop]

I replaced a TE410P (1st Gen) with a TE411P (2nd gen with hardware echo
canceller) and the echo actually got much worse! Very disappointing!


On 10/28/05, Boris Bakchiev <boris at jildent.com.au> wrote:
>
> Hi,
>
> I have TE406P (2nd gen card with echo cancellation on-board).
> We still notice quite often echo on our PBX that is connected to one of
> the spans on TE406P (with calls routers to PRI provider on another
> span).
>
> I've tried to experiment with the echo cancellation on asterisk.
>
> I enabled echo cancellation in Zapata.conf to see if I can improve the
> situation and users started reporting "warping bubble" (description I
> got from one of the users) sound on calls from PABX->Asterisk->PRI (and
> other way).
>
> I was expecting that asterisk would disable its echo cancellation once
> it find on-board module.
>
> The strange thing I noticed that after system reboot things are now
> better.
> Although I cannot say for sure because the system was ever rebooted 2
> times.
>
> Can anyone shed some light on this? Has anyone had similar problems?
> Or point me into right direction for troubleshooting?
>
> Regards
> Boris
>
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