Foreword1 Scope2 References3 Definitions, symbols and abbreviations4 Overview5 Architecture6 Procedures7 Void8 Security issues9 Management IssuesA.1 Single private numbering planA.2 Multiple private numbering plans 7 Void 24.5243GPPArchitecture, functional description and signallingHosted enterprise servicesRelease 17TS Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM