I thought that I had the echo problems licked but after a reboot they came back. I have run fxotune -i before and there is a /etc/fxotune.conf file and I have a backup of it. However the echo problems came back after being gone for months. I ran fxotune -i and the compared the backup fxotune.conf with the new one and there is no difference, but the echo is gone. Do the TDM modules just like attention ever few months??