The remote card processing unit is in {HEAD ~ communication} with a computer network including {TAIL ~ a central computer system} 
The remote card processing unit is in { HEAD ~ communication } with a computer network including { TAIL ~ a central computer system }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL