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