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I am using the VPMADT032 echo cancellation module
attached to a Digium
TE121B PCI express card. The incoming phone service is a PRI. Can I
still use fxotune if my incoming lines are all digital?<br>
I will try echocancel=256.<br>
I have also tried OSLEC and still get echo with that also.<br>
Thank you.<br>
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<title>Jason Baker - Signature</title>
<p><font face="Arial, Helvetica, sans-serif"><b>Jason Baker<br>
</b><font color="#660000"><span><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/" target="_blank">www.glastender.com</a>
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<br>
<br>
Vinícius Fontes wrote:
<blockquote cite="mid:17581566.10531252090639931.JavaMail.root@mail"
type="cite">
<pre wrap="">No it's not a fact of life. VoIP works as fine as conventional telephony once it's correctly set up.
Try echocancel=256 instead of echocancel=yes and also run fxotune (check the man page). If that all fails, install OSLEC. It's an excellent free software echo canceller, that works much better than Asterisk's default MG2.
Vinícius Fontes
<a class="moz-txt-link-abbreviated" href="http://www.asteriskforum.com.br">www.asteriskforum.com.br</a> - Informações e discussão sobre Asterisk e telefonia IP
----- "Jason Baker" <a class="moz-txt-link-rfc2396E" href="mailto:jbaker@glastender.com"><jbaker@glastender.com></a> escreveu:
</pre>
<blockquote type="cite">
<pre wrap="">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?
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.
Jason Baker
IT Coordinator Glastender, Inc.
5400 North Michigan Road
Saginaw, Michigan 48604 USA
Phone: 989.752.4275 ext. 228
Fax: 989.752.4276
<a class="moz-txt-link-abbreviated" href="http://www.glastender.com">www.glastender.com</a>
Doug Lytle wrote:
Jason Baker wrote:
language = en
group = 1
echocancel = yes
echotraining = yes
signalling = pri_cpe
switchtype = 4ess
usecallerid = yes
context = incoming
channel => 1-23 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
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</pre>
</blockquote>
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