The 5G System — topology, scenarios, real flows
Click any node in the topology below to open the Node Inspector: full role, every reference point it speaks, and an editable configuration form with per-parameter guidance. Pick a scenario, then watch the messages animate across a proper sequence diagram with protocol colours, activation bars and timing.
5G System architecture (3GPP TS 23.501)
Service-Based Architecture. Click any NF to inspect it. Lines are labelled with reference-point or SBI service names.
Pick a procedure to step through
Each card lists the network functions involved, real-world use cases, and the relevant 3GPP reference.
5G Initial Registration (Attach)
The full 4G/5G/IMS procedure library at launch.
Inter-RAT & Xn / N2 handover, PDU Session modification & release, periodic registration update, paging, IMS registration, MO/MT VoNR & VoLTE call setup, SMS-over-NAS — every procedure authored at the same depth and animated with the same engine.