A.1 Scope of signalling flows

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

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].