Hi I have an application running on windows 7, pjsip version 1.10, and sometimes the application is writting "Master/sound underflow, buf_cnt=0, will generate one frame" the line is written very fast, and all the time, and no audio is sent. The application is never getting out of that mode, unless it is closed and restartet. What can I do to prevent the application to get into that mode ? -- Best Regards Kresten Tolstrup