[asterisk-users] choopy audio when both side talk at the same time

[Ruben Zamora]

Hi

I have a server with the last version of asterisk branches, zaptel 
branches, 2 Digium Card with TDM800P
16 HPEC channels (Echo Cancelation), 40 Grandstream BT200 and 10 
Grandstream GXP2000.     

zapata.conf
echocancel=64
rxgain=0
txgain=0

when i place a call o receive a call, I finish a sentence i hear a 
ssssssss,    AND  when the both side talks at
the same time i have choppy audio.

Any help i appreciate.

Thanks Ruben