// Base Station Address
  // Change these two values to the coordinator node's address
  XBeeAddress64 XBee_Addr64 = XBeeAddress64(0x0013a200, 0x40f317ce);

  //Build Transmit Request Packet
  ZBTxRequest zbTx = ZBTxRequest(XBee_Addr64, (uint8_t*) params, strlen(params));

  //Send the Data packet
  xbee.send(zbTx);

  // We are expecting an ACK packet, time to check for it.
  // Wait up to half second for the status response to be delivered
  if (xbee.readPacket(500)) {
    // got a response!

    // The response should be a Zigbee TX Status Response
    if (xbee.getResponse().getApiId() == ZB_TX_STATUS_RESPONSE) {
      xbee.getResponse().getZBTxStatusResponse(txStatus);

      // Check the delivery status
      if (txStatus.getDeliveryStatus() == SUCCESS) {
        // success.

        sprintf(tempParam, "packetId=1&rssi=%x",
                rx16.getRssi());