m_emptyDataFrame.client = 1; // lock
if (call CoordCapTx.transmit(&m_emptyDataFrame) != IEEE154_SUCCESS)
m_emptyDataFrame.client = 0; // unlock
m_emptyDataFrame.client = 1; // lock
if (call CoordCapTx.transmit(&m_emptyDataFrame) != IEEE154_SUCCESS)
m_emptyDataFrame.client = 0; // unlock