In this lab you will build a complete 5G SA architecture from scratch. Place the gNB, and connect it to the 5GC network functions: AMF, SMF, UPF, UDM, AUSF, PCF, NRF, and NSSF. Wire the N2 (control), N3 (user plane), N4 (SMF↔UPF), N6 (UPF↔data network), and internal SBI (Service-Based Interface) connections. This exercise reinforces the SA architecture and SBA service bus model.