I wrote a simple app which starts recording in AMR format when I or the remote party picks up the phone. It works OK but the only thing which goes wrong is that when I start recording I hear some beep every 5 sec or so. I am using CMdaAudioRecorderUtility to record and I think I set it up correctly because when I start the recording manually when there's no call, it goes on OK and is recording nicely and there's no beep. This beep is appearing only in recording during a call. I tried to record a call in amr using the built-it recorder of Nokia (started it manually) and the same beep is there.
Does somebody know how to solve this "beep" problem and how to avoid it?