Android :: How To Receive Broadcasts Of Ringer Mode Action?

I have the following broadcast receiver:
public class MyRingModeReceiver extends BroadcastReceiver {
@Override public void onReceive(Context context, Intent intent) {
Logger.iLog("In my Receiver"); } }

I then have a service that onCreate does the following:
IntentFilter filter = new IntentFilter();
filter.addAction("android.media.RINGER_MODE_CHANGED");
registerReceiver(new MyRingModeReceiver() , filter);

When I place a call to the emulator and use the volume keys to modify (silence) the ringer
nothing happens.