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TechSpec
  • Foreword
  • 1 Scope
  • 2 References
  • 3 Abbreviations
  • 4 Cross phase compatibility
  • 5 Network initiated unstructured supplementary service
  • 6 Mobile initiated unstructured supplementary service data
    • 6.1 Handling of mobile initiated USSD
    • 6.2 Functions and information flows
      • 6.2 Functions and information flows
      • 6.2.1 Handling of USSD request at MS
      • 6.2.2 Handling of USSD request at MSC
      • 6.2.3 Handling of USSD request at VLR
      • 6.2.4 Handling of USSD request at HLR
      • 6.2.5 Processing the USSD request
    • 6.3 Information stored in the HLR
    • 6.4 Information stored in the VLR
    • 6.5 Handover
    • 6.6 Cross-phase compatibility

6.4 Information stored in the VLR

23.0903GPPRelease 17Stage 2TSUnstructured Supplementary Service Data (USSD)

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

The VLR shall not store any information specific to the use of USSD, although information may be stored for services which are offered by USSD applications.