[Asterisk-Users] Huge Echo

[Marek Zachara]

>
> I'd recommend the following link for the start:
> http://www.voip-info.org/tiki-index.php?page=Causes+of+Echo
>
I have read the echo related info on voip-info. But this didn't help me much.
thats why i send my initial post to this list. I know the problem is related 
to the FXO card, but none of the hints there helped. 
I'm wondering however why the echo cancellation doesn't work as expected in 
asterisk. Any way to debug it?

Marek