<br><br><div class="gmail_quote">On Tue, Nov 24, 2009 at 11:29 AM, Steve Howes <span dir="ltr"><<a href="mailto:steve-lists@geekinter.net">steve-lists@geekinter.net</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;">
<div class="im"><br>
On 24 Nov 2009, at 13:05, jefferson alexandre wrote:<br>
> I'm running some asterisks in a small voip provider in Brazil and<br>
> we're having some problems with a analogic channel bank.<br>
> When I make calls using analogic extensions, I have a crystal<br>
> clear quality, but the receptor have a lot of noise and echo.<br>
<br>
</div>Does the channel bank have onboard echo cancellation?<br></blockquote><div><br>Steve, the hardware don't have echo cancellation. <br>Is a TDMoE hardware, plugged directly in asterisk using a straight cable. <br>
In asterisk side, the network card haven't auto negotiation, the speed is adjusted to 100mbps full duplex. <br>All electrical sources and ground are ok. <br></div></div>