Understanding the Advantages and Disadvantages of PoC or Push-To-Talk Over Cellular

 PoC or Push-To-Talk Over Cellular use apps to turn smartphones into walkie-talkies. Many of these apps can connect with two-way radio repeaters extending the range far beyond that of the local repeater. 

Many rugged smartphones like the Sonim XP8 Handheld and Siyata Uniden UV350 Mobile Mount smartphones include a dedicated PTT button for PoC. The Uniden UV350 also has external celular and GPS antennas and it's hardwired to the vehicle, so never a dead battery.

Another advantage of PoC or Push-To-Talk Over Cellular is the reduced capital expenditure for companies. Push to Talk Over Cellular can operate on any device, Android, iOS and even desktop PC's using a PoC App or software. 

There is no need for the company to invest in expensive repeater systems and two-way radios. PoC Apps can be easily integrated into an employee's personal device saving the expense of $5000 Motorola handheld radios in some cases.

Some of the disadvantages of PoC is limited battery life in handheld devices, the range is limited by the cellular network's coverage, and vulnerability to attack like conventual two-way radio systems. 

Push to Talk Over Cellular enables those in the field to skip dialing phone numbers in an emergency and gain help at the press of a button.

If using FirstNet's Band 14 for first responders, they have backup portable cell towers that can replace down cell towers in an emergency.

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