(Fixed Issue)the audio prompts are jittery and broken

the audio prompts are jittery and broken, never had this problem before and the phone ring is different. Is a sign of changed codec I belive. Just wanted to know what is the easiest way to change or test codecs to resolve this problem. Or any other ideas you may have.

Also noticed it was just at the beginning of the file . At the end it was clear.

Thanks.

trunk conf file did not include the correct codecs