3GPP 23.501 v20.2.0 — the document's own text
5.34.2.1 SBA architecture
Taught in 26. Relays, satellites, femtos and shared networks (The 5G system architecture, in depth).
In non-roaming case the SBA architecture described in Figure 4.2.3-1 shall apply. In local breakout scenarios the SBA architecture described in Figure 4.2.4-1 shall apply. In Home Routed scenarios the SBA architecture described in Figure 4.2.4-3 shall apply.