Understanding PoC

Push-to-Talk over Cellular (PoC) utilizes commercial cellular and Wi-Fi networks rather than dedicated two-way radio RF repeaters to carry voice transmissions. By turning voice audio into digital IP packets, PoC allows teams to communicate instantaneously at the push of a button—anywhere mobile data or wireless internet is available.

Unlike traditional analog or digital mobile radio (DMR) setups that rely on line-of-sight repeater towers and strict power limitations, PoC eliminates geographic boundaries. A dispatcher in Metro Vancouver can key their microphone and talk directly to mobile crews working across the Fraser Valley, the Okanagan, or northern British Columbia without delay.

When a user presses the dedicated physical Push-to-Talk button on a PoC handset, the radio encodes voice into encrypted IP data packets. These packets are transmitted via local 4G LTE cellular data or building Wi-Fi to a secure cloud dispatch server, which instantly broadcasts the audio stream to all radios assigned to that talkgroup.

The handover occurs in milliseconds—providing the true instantaneous "one-to-many" group broadcast experience that dispatchers and field crews rely on for safety and operational coordination.

For businesses seeking reliable inter-site communications with rapid deployment and manageable operating costs, PoC radio networks deliver substantial benefits over legacy systems:

PoC is an ideal solution for transportation companies, couriers, regional service fleets, property management teams, school bus contractors, and construction outfits operating across large urban or rural corridors where cellular coverage is established.

For remote back-country operations completely outside cellular and satellite range (such as high-altitude forestry cut-blocks or deep underground mines), conventional licensed VHF repeaters or satellite terminals remain standard. Metro Mobile technicians assess your exact operational map to recommend whether pure PoC, digital DMR, or a hybrid bridge is best suited.