Implementation of Radio Over Internet Protocol Gateway for Police Station in Mountainous and Uncovered Areas

Police stations are one of the main assets that need to communicate with one another. The problem that occurs is the location of the police station that separate by mountains/hills areas or uncovered areas. This paper will discuss radio over internet protocol (ROIP) media for police station communication between describing areas before. ROIP functions as an interface between conventional radios and servers supported by the internet network so that old radios can reach a network. This radio gateway itself consists of some components such as a raspberry pi3 microprocessor, soundcards, and simple switching as components that forward voice data and an ISP to communicate via the internet. The test occurs by using different cellular operators in a programmed smartphone with an interface application, especially for ROIP communication.