👉 Untrunked, also known as a "closed-loop system," refers to a system where all physical links between components are closed and there is no exchange of energy or information. In other words, it's an isolated system without any external inputs or outputs. In the context of electrical systems, untrunked systems can be found in applications such as power distribution networks, where only one cable connects two substations. This type of system would have no direct connections to other components and therefore lacks
