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TechSpec
  • Foreword
  • 1 Scope
  • 2 References
  • 3 Definitions, symbols and abbreviations
  • 4 Messaging overview
  • 5 Protocol using SIP for page-mode messaging
  • 6 Protocol using SIP for session-mode messaging
  • 7 Protocol using SIP for session-mode messaging conferences
  • 8 Protocol using SDP for session-mode messaging and session-mode messaging conferences
  • 9 Protocol using MSRP for session-mode messaging and session-mode messaging conferences
  • 10 Void
  • A.1 Scope of signalling flows
  • A.2 Introduction
  • A.3 Signalling flows demonstrating immediate messaging
  • A.4 Signalling flows demonstrating session-based messaging
  • A.5 Flows demonstrating session-based messaging conferences

A.3 Signalling flows demonstrating immediate messaging

24.2473GPPMessaging service using the IP Multimedia (IM) Core Network (CN) subsystemRelease 17Stage 3TS

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

The signalling flow for immediate messaging is shown in clause 10.6 of 3GPP TS 24.228 [4].