private boolean handleCallDeflectionIncallSupplementaryService(String dialString)
      throws CallStateException {
    if (dialString.length() > 1) {
      return false;
    }

    if (getRingingCall().getState() != GsmCall.State.IDLE) {
      if (LOCAL_DEBUG) Log.d(LOG_TAG, "MmiCode 0: rejectCall");
      try {
        mCT.rejectCall();
      } catch (CallStateException e) {
        if (LOCAL_DEBUG) Log.d(LOG_TAG, "reject failed", e);
        notifySuppServiceFailed(Phone.SuppService.REJECT);
      }
    } else if (getBackgroundCall().getState() != GsmCall.State.IDLE) {
      if (LOCAL_DEBUG) Log.d(LOG_TAG, "MmiCode 0: hangupWaitingOrBackground");
      mCT.hangupWaitingOrBackground();
    }

    return true;
  }
 public void rejectCall() throws CallStateException {
   mCT.rejectCall();
 }