No Echo But Background Static Noise

Ive managed to eliminate most of the echo using fxotune etc but when a call comes in I have to increase the volume on my phone and I hear a lot of background static. Ive checked the phone and its ok. Ive plugged in a normal phone and used BTs quiet line test and thats fine so it seems like the static is coming from asterisk. Calling asterisk mail etc does not have the static noise.

What can I do ? if I don?t want to hear static I have the volume low but I cant hear the other party ? put the volume high and I can hear static !!!