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