Push-to-talk over cellular (PoC) technology enables subscribers to make one-to-many calls to different groups of people at the same time over a mobile operator’s network. One person can be in continuous half-duplex PTT communication with one or more active call groups with a single push of a physical button or touch screen.
There is no need for the caller to dial a phone number. The connection is made almost instantly providing a low latency to rival private PTT calls on Professional Mobile Radio (PMR) networks, also known as Land Mobile Radio (LMR). Unlike most PMR networks (unless they are national networks) subscribers also benefit from an almost unlimited coverage range as they can talk to anyone within the mobile network’s national coverage footprint.