Category: 4 Architecture model and concepts
- 4.2.4 Service-based interfaces
- 4.3 Functional entities
- 4.2.2 Roaming reference architecture
- 4.2.3 Inter-PLMN reference architecture
- 4.2.3 Reference points
- 4.2 Architectural reference model
- 4.2.1 Non-roaming reference architecture
- 4.1 General concept
- 4.3 Functional entities
- 4.2.3 Inter-PLMN reference architecture