[Asterisk-Users] Echo cancelling with Adit 600

[Peter Svensson]

On Fri, 22 Apr 2005, Daniel Nyström wrote:

> Do anyone have experience with echo cancelling on Adit 600?
> My Adit 600 consist of 5*8 FXS cards and 1 CMG Router using MGCP to Asterisk.
> I've turned on Echo Cancelling with 64ms as longest delay (that's maximum).
>
> But there still are great echo with delay when dialing through the telco
> (through an E1 and EuroISDN).

I suspect a channel bank normally only cancels the echo on the extension
side. To handle echo on a voip link you would need an echo canceler with
several times longer span.

You can try to reduce the size of any jitterbuffer in the Adit. That may 
make the echo latency lowe enough.

Peter