{TAIL ~ The communications channel} 1 wherein {HEAD ~ said communications channel} is implemented in a data storage system 
{ TAIL ~ The communications channel } 1 wherein { HEAD ~ said communications channel } is implemented in a data storage system
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH