This is the CodeSystem that contains all the codes in MADO Endpoint Connection Types Code System (https://profiles.ihe.net/RAD/MADO/CodeSystem/MadoEndpointConnectionTypes) and MADO Endpoint Connection Types Code System (https://profiles.ihe.net/RAD/MADO/CodeSystem/MadoEndpointConnectionTypes). E.g. what you have to deal with if you get resources containing codes in either of them