The selection of timing masters is based on the synchronization signals received from one or more of {HEAD ~ the timing servers} of {TAIL ~ the multiple pluralities} of timing servers and on a relationship among the unique constants stored in each timing server 
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The selection of timing masters is based on the synchronization signals received from one or more of { HEAD ~ the timing servers } of { TAIL ~ the multiple pluralities } of timing servers and on a relationship among the unique constants stored in each timing server
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH