POC Mobile Radios (Push-to-Talk Over Cellular)

What is PoC mobile radio? The Push-to-Talk Over Cellular (PoC) mobile radio (or sometimes called Nationwide PTT or LTE radio systems) is the two-way radios using the existing mobile communication network for interaction. PoC mobile radio system is favorable for group users in vehicles since it eliminates the distance restriction of traditional walkie-talkie devices.