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Well I tried Doug's suggestion and the echo is now better, but when I
call an outside analog line I still get some echo. I can hear my voice
in the ear piece of the phone with a slight delay. Is this just a fact
of life with VoIP, or is there a better way to reduce line echo?<br>
<br>
Again, for reference, I am using the VPMADT032 echo cancellation module
attached to a Digium
TE121 PCI express card. The incoming phone service is a PRI.<br>
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<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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<br>
<br>
Doug Lytle wrote:
<blockquote cite="mid:4A9EC2CD.5020106@drdos.info" type="cite">
<pre wrap="">Jason Baker wrote:
</pre>
<blockquote type="cite">
<pre wrap="">language = en
group = 1
echocancel = yes
echotraining = yes
signalling = pri_cpe
switchtype = 4ess
usecallerid = yes
context = incoming
channel => 1-23
</pre>
</blockquote>
<pre wrap=""><!---->
Just noted that your system is out of Saginaw. The system below is out
of Livonia, with an AT&T PRI as well. Note the rx/txgain entries, it
may be useful as well:
switchtype=national
context=pri
signalling=pri_cpe
echocancel=yes
echotraining=yes
echocancelwhenbridged=yes
rxgain=-1.0
txgain=-4.0
</pre>
</blockquote>
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