5.1.8 Charging support for roaming architecture for voice over IMS with local breakout

32.2603GPPCharging managementIP Multimedia Subsystem (IMS) chargingRelease 17Telecommunication managementTS

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

The roaming architecture for voice over IMS with local breakout is described in the TS 23.228 [201]. The corresponding Charging principles are defined in the TS 32.240 [1]. In the present document, charging support for the Transit and Roaming Function (TRF) requisite for roaming architecture for voice over IMS with local breakout is rendered by presuming collocation or standalone.

Figure 5.1.8.1 shows an example for possible signalling and media flows in a roaming architecture for voice over IMS with local breakout.

Figure 5.1.8.1: Signalling and media flows in a roaming architecture for voice over IMS with vocal breakout (example)