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