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It was Digium's opinion that perhaps the card had a VPM. We got a
replacement TE411P, I implemented it tonight and still the exact same
echo problem. At this point I feel like I can rule out failed
hardware. <br>
<br>
I contacted Digium support and now they are telling me it's something
with my carrier, and I should call them. I called Bellsouth, and they
ran a full stress test on the circuit taking me offline for about 30
minutes. <br>
<br>
The end result is that the circuit test passed with no errors.
Bellsouth says it's not in their network, Digium says its not their
card, and I have a te411p with VPM disabled in the wct4xx kernel module
because something doesn't work the way it should. My customer is
wanting to know about sangoma cards with the echo cancellation, and at
this point I'm nervous to recommend any hardware. I'm going to look
into the sangoma that you suggested. Are there any other kinds of
products that I could look into either Passive or Active.<br>
<br>
Thanks <br>
<br>
Stagg Shelton<br>
<a class="moz-txt-link-abbreviated" href="http://www.oneringnetworks.com">www.oneringnetworks.com</a><br>
<br>
<br>
Matt wrote:
<blockquote cite="mid003001c62c66$8adaf6d0$0301a8c0@bbzlsgmfs2be6y"
type="cite">
<pre wrap="">try sangoma carrier grade 104d hardware EC card. we're using it ourself.
Best Regards
Matt
----- Original Message -----
From: "Anthony Rodgers" <a class="moz-txt-link-rfc2396E" href="mailto:Anthony_Rodgers@dnv.org"><Anthony_Rodgers@dnv.org></a>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<a class="moz-txt-link-rfc2396E" href="mailto:asterisk-users@lists.digium.com"><asterisk-users@lists.digium.com></a>
Sent: Tuesday, February 07, 2006 12:57 PM
Subject: Re: [Asterisk-Users] TE411P Really Bad Echo
</pre>
<blockquote type="cite">
<pre wrap="">For what it's worth, we have been going through very similar issues
with a TE411P - with Digium support, we have basically gone as far as
we can with the HW EC, and are now using MG2 with much better results.
We have a Ditech EC box on order.....
Regards,
--
Anthony Rodgers
Business Systems Analyst
District of North Vancouver
Web: <a class="moz-txt-link-freetext" href="http://www.dnv.org">http://www.dnv.org</a>
RSS Feed: <a class="moz-txt-link-freetext" href="http://www.dnv.org/rss.asp">http://www.dnv.org/rss.asp</a>
On Feb 7, 2006, at 7:36 AM, Matthew Fredrickson wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On Feb 5, 2006, at 9:36 PM, Stagg Shelton wrote:
</pre>
<blockquote type="cite">
<pre wrap="">I just implemented a system using a TE411P hardware echo cancellation
card. Per Digium, I setup zaptel.conf, and zapata.conf the same way
</pre>
</blockquote>
<pre wrap="">as
</pre>
<blockquote type="cite">
<pre wrap="">I always have. To my surprise calls out to the PSTN had a terrible
echo. 1 - 2 second delay, and quite clear. The echo was so bad that
</pre>
</blockquote>
<pre wrap="">I
</pre>
<blockquote type="cite">
<pre wrap="">had to remove the hardware echo cancellation module from the card.
</pre>
</blockquote>
<pre wrap="">We
</pre>
<blockquote type="cite">
<pre wrap="">are only using the 1st span of this card right now, and we have a
tdm400p with 4 fxs modules installed as well.
If anyone has experience with this card, can you tell me if I am
missing
something.
</pre>
</blockquote>
<pre wrap="">
1 to 2 seconds?! That's ridiculously huge. I don't think you'll find
a echo canceler anywhere that can fix your echo problem. If it gets
better with the VPM disabled, then definitely contact Digium
tech-support about it.
Matthew Fredrickson
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<pre wrap=""><!---->
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