Where ICT with real-time voice includes real-time two-way video, it must provide total conversation: RTT meeting 6.2, voice meeting 6.1 and video meeting 6.5, together with 6.3 and 6.4. ETSI ES 204 009 gives guidance.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.