A single unified method call is made to policy adapters in response to the mediated customer request, {HEAD ~ each} of {TAIL ~ the policy adapters} in communication with a policy server 
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A single unified method call is made to policy adapters in response to the mediated customer request , { HEAD ~ each } of { TAIL ~ the policy adapters } in communication with a policy server
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH