This part of IEC 61334 covers the services required of, or by, the DCP network layer (N) sublayer entity at the logical interfaces with the N user layer and the LLC sublayer, using the connectionless N procedures. Services are specified showing the information flow between the N user and the LLC service, by describing the service primitives and parameters which characterize each service. The primitives in this standard are associated with the connectionless N protocol, providing connectionless services.