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I personally ended up removing the hardware canceler from our TDM404E
and just used OSLEC. I tried unsuccessfully for a month to get the
hardware canceler to work, but no matter what I still ended up with
echo is some scenarios. OSLEC has been the best solution from my
experience.<br>
<br>
Greg<br>
<br>
Matt Sales wrote:
<blockquote
cite="mid:42058ff00910101047r6856bd2cw724d3bd92a439112@mail.gmail.com"
type="cite">It has been my experience in the past that running fxotune
on your system will clear up most echo issues. Read more about it here:<br>
<br>
<a moz-do-not-send="true"
href="http://www.voip-info.org/wiki/view/Asterisk+fxotune">http://www.voip-info.org/wiki/view/Asterisk+fxotune</a><br>
<br>
<br>
<br>
<div class="gmail_quote">On Fri, Oct 9, 2009 at 3:58 PM, Bob Crandell
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:robert@assuredcomp.com">robert@assuredcomp.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Andrew,<br>
<br>
These are POTS lines.<br>
<br>
If it's glare then what do I change?<br>
<br>
I'm kind of hoping I can make these adjustments in the GUI. Is it
possible?<br>
<br>
How do you have yours set?<br>
<br>
Thanks
<div>
<div class="h5"><br>
<br>
<div class="gmail_quote">On Fri, Oct 9, 2009 at 10:55 AM, Andrew
Latham <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:Andrew.Latham@tuxtone.com" target="_blank">Andrew.Latham@tuxtone.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Bob<br>
<br>
On to the fun topic of audio quality.... The (echo, glare, volume)<br>
canceler is getting "trained" during your call so that is why it fixes<br>
its self. If you are using POTS for your trunk lines then you will<br>
want to work on the DAHDI/Zaptel settings to resolve any issues. You<br>
may be dealing with glare instead of echo.<br>
<br>
<a moz-do-not-send="true"
href="http://en.wikipedia.org/wiki/Echo_%28phenomenon%29"
target="_blank">http://en.wikipedia.org/wiki/Echo_(phenomenon)</a><br>
<br>
To fix you can enable and fine tune settings in your DAHDI/Zaptel<br>
settings files and restart both Asterisk and DAHDI/Zaptel.<br>
<br>
<br>
~<br>
Andrew "lathama" Latham<br>
<a class="moz-txt-link-abbreviated" href="mailto:Andrew.Latham@TuxTone.com">Andrew.Latham@TuxTone.com</a><br>
<br>
* Learn more about OSS <a moz-do-not-send="true"
href="http://en.wikipedia.org/wiki/Open-source_software"
target="_blank">http://en.wikipedia.org/wiki/Open-source_software</a><br>
* Learn more about Linux <a moz-do-not-send="true"
href="http://en.wikipedia.org/wiki/Linux" target="_blank">http://en.wikipedia.org/wiki/Linux</a><br>
* Learn more about Tux <a moz-do-not-send="true"
href="http://en.wikipedia.org/wiki/Tux" target="_blank">http://en.wikipedia.org/wiki/Tux</a><br>
<div>
<div><br>
<br>
<br>
On Fri, Oct 9, 2009 at 1:43 PM, Bob Crandell <<a
moz-do-not-send="true" href="mailto:robert@assuredcomp.com"
target="_blank">robert@assuredcomp.com</a>> wrote:<br>
> Hi,<br>
><br>
> My next challenge is canceling the echo when I make or receive a
call.<br>
> Right now the echo lasts for the first few seconds after the call
is<br>
> answered then stops.<br>
> There is no echo when calling an extension.<br>
> Under Configure hardware is software echo canceller. I tried a
couple of<br>
> things there that didn't make a noticable difference.<br>
> Under Advanced Options/SIP Settings there is Jitter Buffer which
might have<br>
> made a tiny difference.<br>
><br>
> What are you guys doing about this?<br>
><br>
> Thanks<br>
> --<br>
> Bob Crandell<br>
> Assured Computing, Inc.<br>
> 541-868-0331<br>
> ComputerBase<br>
> 541-349-0404<br>
><br>
</div>
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</blockquote>
</div>
<br>
<br clear="all">
<br>
</div>
</div>
-- <br>
<div>
<div class="h5">Bob Crandell<br>
Assured Computing, Inc.<br>
541-868-0331<br>
ComputerBase<br>
541-349-0404<br>
</div>
</div>
<br>
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