12. IP multimedia session handling with an Charging Server

23.2183GPPIM call modelIP Multimedia (IM) session handlingRelease 17Stage 2TS

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

This clause describes the functional architecture needed to support interactions with the S-CSCF in the IP Multimedia Subsystem and Charging Server. The Charging Server is a specific SIP Application Server that performs the role of online charging mechanism for the Event Charging Function (ECF) and Session Charging Function (SCF).

The detailed procedures for Charging Server are specified in 3GPP TS 32.240 [20] and 3GPP TS 32.260 [21].