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TechSpec
  • Foreword
  • 1 Scope
  • 2 References
  • 3 Definitions and abbreviations
  • 4 Presence service overview
  • 5 SIP related procedures
  • 6 Protocol for data manipulation at the Ut reference point
  • 7 Presence information model of the 3GPP subscriber
  • A.1 Scope of signalling flows
  • A.2 Introduction
  • A.3 Signalling flows demonstrating how watchers subscribe to presence event notification
  • A.4 Signalling flows demonstrating how presentities update presence information
  • A.5 PS notifying watcher of updates to presence information
  • A.6 PUA subscribing to his own watcher list and receiving notification of new watcher subscriptions
  • A.7 PNA subscription for the reg-event package
  • A.8 Example signalling flows of HTTP based presence service operation

A.1 Scope of signalling flows

24.1413GPPPresence service using the IP Multimedia (IM) Core Network (CN) subsystemRelease 17Stage 3TS

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

This annex gives examples of signalling flows for the presence service within the IP Multimedia (IM) Core Network (CN) subsystem based on the Session Initiation Protocol (SIP) and SIP Events.

These signalling flows provide detailed signalling flows, which expand on the overview information flows provided in 3GPP TS 23.141 [4].