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TechSpec
  • Foreword
  • 1 Scope
  • 2 References
  • 3 Definitions, symbols and abbreviations
  • 4 Main Concepts
    • 4.1 General
    • 4.2 Call Control
    • 4.3 H.248
    • 4.4 MGW Selection
      • 4.4.1 Principles
      • 4.4.2 Optimised MGW Selection
      • 4.4.3 Deferred MGW selection
      • 4.4.4 Mobile to Mobile Call
      • 4.4.5 MGW bypass
  • 5 General Circuit Switched Core Network Domain Architecture
  • 6 Call Establishment
    • 6 Call Establishment
    • 6.1 Basic Mobile Originating Call
    • 6.2 Basic Mobile Terminating Call
  • 7 Call Clearing
    • 7.1 General
    • 7.2 Visited MSC Server Procedures
      • 7.2.1 Call Clearing when Visited MSC Server has Forwarded/Deflected Call
      • 7.2.2 Call Clearing received from core network
      • 7.2.3 Call Clearing received from UE
      • 7.2.4 Call Clearing initiated by V-MSC Server
      • 7.2.5 Call clearing received from MGW
      • 7.2.6 Call Clearing procedures towards MGW
      • 7.2.7 Call Clearing for Iu Interface on IP
    • 7.3 Gateway MSC Server Procedures
  • 8 Handover/Relocation
  • 9 Compatibility Issues
  • 10 General (G)MSC server-MGW Procedures
  • 11 Identities
  • 12 Operational Aspects
  • 13 Interactions with Other Services
  • 14 Interactions with Other Network Features and Services
  • 15 Messages/Procedures and their contents
  • 16 Bearer Redirect
  • 17 (G)MSC MGW Tandeming
  • 18 Timers for SIP-I based CS core network
  • 19 Multiple IP Realms

5 General Circuit Switched Core Network Domain Architecture

23.2313GPPRelease 17SIP-I based circuit-switched core networkStage 2TS

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

The General CS core network domain architecture is specified in 3GPP TS 23.205 [7].