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