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<span class="postbody">Greetings,<br>
I am running Asterisk 1.4.25 with Dahdi Complete
2.2.0, on a Digium TE121B PCI express card with a </span>VPMADT032<span
class="postbody"> echo
cancellation module, connected to an AT&T 24 channel PRI.</span><br>
<br>
When I run dahdi show channel X on an active channel, I see this:<br>
<blockquote>Echo Cancellation: 128 taps unless TDM bridged, currently ON<br>
</blockquote>
So I know the echo cancellation is working, however when I call a local
analog land line, I get discernible echo.<br>
<br>
Here is my chan_dahdi.conf:<br>
<br>
[channels]<br>
; configuration for T1 card as PRI<br>
language = en<br>
<br>
group = 1<br>
echocancel = yes<br>
echotraining = yes<br>
signalling = pri_cpe<br>
switchtype = 4ess<br>
usecallerid = yes<br>
context = incoming<br>
channel => 1-23<br>
<br>
Someone has to have had some experience with these hardware echo
cancellers, any ideas? Should I adjust my rx and tx gains? Any advice
would be very helpful. Thank you.<br>
<div class="moz-signature">-- <br>
<title></title>
<p><font face="Arial, Helvetica, sans-serif"><b>Jason Baker<br>
</b><font color="#660000"><span style=""><i>IT
Coordinator</i></span></font></font></p>
<font color="#000099" face="Arial, Helvetica, sans-serif"><b>
Glastender, Inc.</b></font><br>
<font size="2">5400 North Michigan Road<br>
Saginaw,
Michigan 48604 USA<br>
Phone: 989.752.4275 ext.
228<br>
Fax: 989.752.4276</font><br>
<a href="http://www.glastender.com/">www.glastender.com</a>
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