I am working on RN52 bluetooth module, for normal audio streaming(song/A2DP), i am getting analog values at speaker output( SPK L and SPK R both), When i am pausing the song, analog values getting changed on SPK L side.which is distinguishable that song is playing or not. But for call (HSP) the output is very much confusing, as When i am calling a number, i am getting analog values(XYZ) from SPK L side while talking, if he mutes the call, still i am getting the same analog output(XYZ) from (SPK L), my purpose is that, i want to know when the call is getting muted, the analog value should change my side when someone mutes the call as there should be nothing on my speaker when the person i dialed mutes the call , may be from some other pins or by using some other protocol, i can get my desired output. PLEASE HELP