asterisk users - Feb 2003 - Generic echo cancellation module?

hi all

I'm using an AVM C2 with CAPI today, and sometimes (but not all the 
time), we're having problems with echo. The users complain, and I 
really don't know what to do but try the newest CVS, which usually 
doesn't help much.

I heard the echo cancellation code for zaptel is pretty neat. Is it 
possible to rewrite this so it can be generic/shared by other channels?

roy