This may be of help:<br><br><a href="http://lists.freeswitch.org/pipermail/freeswitch-users/2010-March/055505.html">http://lists.freeswitch.org/pipermail/freeswitch-users/2010-March/055505.html</a><br><br clear="all">Moises Silva<br>
Senior Software Engineer<br>Sangoma Technologies Inc. | 50 McIntosh Drive, Suite 120, Markham ON L3R 9T3 Canada<br>t. 1 905 474 1990 x 128 | e. <a href="mailto:moy@sangoma.com" target="_blank">moy@sangoma.com</a><br>
<br><br><div class="gmail_quote">On Sat, Jun 26, 2010 at 8:57 PM, Jeroen C. van Gelderen <span dir="ltr"><<a href="mailto:jeroeng@thegreek.com" target="_blank">jeroeng@thegreek.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;">
Hi everybody,<br>
<br>
I have a feeling I must be missing the obvious...<br>
<br>
I've been trying to get echo canceling to work with Freeswitch/FreeTDM/DAHDI<br>
but I have been failing miserably for days. When I enable echo cancellation<br>
(MG2 or OSLEC) on a DAHDI/FreeTDM channel (FXS or FXO) that channel goes<br>
silent.<br>
<br>
In absence of better suggestions I was hoping to replicate someone's "known<br>
working" configuration. Is anyone successfully running the following<br>
combination:<br>
<br>
- any x86 hardware<br>
- any recent flavor Linux<br>
- any recent version of DAHDI using FXO ports<br>
- FreeSwitch/FreeTDM trunk from git<br>
- OSLEC echo canceller (or MG2)<br>
- (BONUS:) Xorcom Astribank with FXO/FXS ports.<br>
<br>
I addition to much Googling I've tried most permutations of:<br>
- CentOS 5.4, 5.5, Ubuntu 10.04 LTS, Elastix<br>
- x86 and x64 single and multicore CPUs.<br>
- Non-PAE kernels for 32-bit installs.<br>
- DADHI from SVN (or -in case of Elastix- the built-in 2.2.0.2)<br>
- MG2 and OSLEC echo cancellers<br>
- Freeswitch from Git trunk<br>
<br>
In each case everything configures fine to the point that Asterisk 1.6 will<br>
function with echo cancellation enabled. So we know that DAHDI layer works.<br>
But Freeswitch channels go silent when echo cancellation is enabled.<br>
<br>
Puzzled,<br>
-Slim<br>
<br>
--<br>
Jeroen C. "Slim" van Gelderen<br>
<br>
<br>
<br>
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</blockquote></div><br>