The user processes are configured for execution on {HEAD ~ the processors} for interfacing {TAIL ~ a plurality} of subscriber locations 
for interfacing
The user processes are configured for execution on { HEAD ~ the processors } for interfacing { TAIL ~ a plurality } of subscriber locations
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH