The DECT ULE ontology describes the DECT ULE HF standard, which is based on a star network topology of network entities. A HFNetworkEntity can be a HFConcentrator, which is the network’s master device, or a HFDevice. There are up to thousands of devices supported by the concentrator and connected to it. The HF protocol supports several types of HF messages exchanged between network entities (i.e., commands, requests, responses), and each of these messages has a message type code. A HFMessage is structured in 3 fields (i.e., network, transport and application layers