Problem solved. :)<br><br>I was adding to the pstn line a gain of 6 DB for both sides.<br>It has to be less than zero. After that the echo almost disappeared. <br><br><br><br><div class="gmail_quote">2010/1/21 Alexandre Rodrigues <span dir="ltr"><<a href="mailto:alex454@gmail.com">alex454@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello all, <br><br>I have a Linksys spa3102 with one FXS and one FXO port.<br><br>The problem is that I have a lot of echo when using the fxo port, the sound is of very low quality.<br>
So, since I am passing from a FXO port to a SIP channel I ask: <br>
<br> is there any Sip echo canceler software for asterisk??<br><br>Thanks in advance.<br><br>Alex <br>
</blockquote></div><br>