Digital Mobile Radio

From the good old days that we know radio, it is actually an analog radio, and now it has emerged as a digital radio.

Most call it PTT over Cellular, although it works it through Wi-Fi, Satellite Broadband, Fiber Internet Services, usual Telco Internet, GSM, LTE, 4G, 5G or any Internet connectivity that let's you communicate to a server elsewhere like on Cloud, or your facility with a static IP.