A “client machine” is used to perform tests on {HEAD ~ network products} that may be located within a communications test network using a variety of {TAIL ~ test cases} 
A “ client machine ” is used to perform tests on { HEAD ~ network products } that may be located within a communications test network using a variety of { TAIL ~ test cases }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL