{HEAD ~ A plurality} of data blocks is received over a transmission time interval and the count of data blocks is stored in {TAIL ~ memory} 
{ HEAD ~ A plurality } of data blocks is received over a transmission time interval and the count of data blocks is stored in { TAIL ~ memory }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL