Recommendation ITU-T D.285 (11/2023) – Guiding principles for charging and accounting for intelligent network supported services Summary History FOREWORD Table of Contents 1 Scope 2 References 3 Definitions 3.1 Terms defined elsewhere 3.2 Terms defined in this Recommendation 4 Abbreviations and acronyms 5 Conventions 6 Background 7 Charging 8 Billing 9 International traffic accounting 10 International accounting for IN-facilities required for the provision of IN-specific service elements 11 Guidelines for specific service elements Annex A Number translation A.1 Applications A.2 Implementation A.3 Resources required A.4 Impact on international accounting A.4.1 Call circuit function A.4.1.1 Call set-up time A.4.1.2 Ratio of successful/unsuccessful calls A.4.2 Translation function Annex B Validation, authentication and authorization (VAA) B.1 Applications B.2 Implementation B.3 Resources required B.4 Impact on international accounting B.4.1 Call circuit function B.4.1.1 Ratio of conversation time/call holding time B.4.1.2 Ratio of unbillable/billable calls B.4.2 VAA functions Annex C Database manipulation (DM) C.1 Applications C.2 Implementation C.3 Resources required C.4 Impact on international accounting C.4.1 DM functions