{HEAD ~ The response message reading part} reads {TAIL ~ a response message} associated with the transmission period per unit cost 
{ HEAD ~ The response message reading part } reads { TAIL ~ a response message } associated with the transmission period per unit cost
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH