39 IMS White Paper Acronyms CDRCharging Data Records CGFCharging Gateway Function CLECCompetitive LEC CNCore Network COPS Common Open Policy Service CPECustomer Premises Equipment CSCircuit-switched CSCFCall Session Control Function CTIACellular Telecommunications and Internet Association DBDatabase DHLRDistributed Home Location Register DIAMETERAAA or HSS protocol; successor/upgrade of RADIUS DMSDual Mode Services DNSDomain Name System DSLDigital Subscriber Line E9-1-1Emergency Services ECFEvent Charging Function EDGEEnhanced Data Rates for GSM Evolution EIAElectronics Industry Association ENUMTelephone Number Mapping GGSNGateway GPRS Support Node GPRSGeneral Packet Radio Service GSAGlobal Mobile Suppliers Association GSMGlobal System for Mobile Communication HLRHome Location Register HSSHome Subscriber Server
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