The network employs a Ring Wiring Center which includes {HEAD ~ a single optical fiber} attached to {TAIL ~ a processor} 
attached to
The network employs a Ring Wiring Center which includes { HEAD ~ a single optical fiber } attached to { TAIL ~ a processor }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL