PoC Radio — Push-to-Talk over Cellular

PoC Radio over Cellular

Communication Solutions August 27, 2026 TechnoRF

PoC (Push-to-Talk over Cellular) carries radio traffic over mobile broadband instead of dedicated RF infrastructure. Coverage becomes national on day one with no repeaters and no frequency licence, at the cost of depending on the operator network. It suits fleets spread across the country.

Details

PoC — Push-to-Talk over Cellular — carries group radio traffic over mobile broadband instead of over dedicated radio infrastructure. There are no repeaters, no masts, no frequency application, and coverage on the first day is the operator’s national coverage.

What changes and what does not

What does not change is the user experience. A Hytera PoC handset has a physical PTT key, a loud speaker, a rugged sealed body and a battery sized for a shift. The driver presses the key and talks to the group. Nothing about the operation needs retraining.

What changes is everything behind that:

	DMR / TETRA	PoC
Coverage	What you build	The operator’s national footprint
Infrastructure	Repeaters, antennas, sites, power	None
Frequency licence	Required, per frequency	None
Cost model	Capital, then near-zero running	Low capital, monthly per device
Range limit	Your coverage design	Anywhere with mobile data
Dependency	Your own equipment	A commercial network
Behaviour in a major incident	Unaffected	May congest with everyone else

The last two rows are the whole argument. PoC removes the infrastructure problem by outsourcing it, which is excellent value right up until the moment the outsourced network is the thing that fails.

Where PoC is clearly right

Logistics fleets covering the country — a repeater network would cost more than the fleet
Distributed service organisations — technicians working from many cities
Multi-site retail and facility operations under one dispatch position
Temporary or seasonal operations where infrastructure cannot be justified
Extending an existing radio system to vehicles that leave the covered area

That last case is the most common in practice. A site keeps its DMR system for on-site work and adds PoC for the long-distance fleet, with a gateway so both hear the same dispatcher.

What comes with the platform

Because traffic already traverses an IP network, features that would need extra infrastructure on a conventional system come as standard: live position on a map, route history, geofence alerts, voice recording, individual and group calls, text and image messaging, video streaming from the handset, and an operator dispatch console reachable from a browser.

For an operation that has never had visibility of its field fleet, this dispatch layer is frequently worth more than the voice service.

Choosing responsibly

Three questions decide it:

1. Where do the users work? Concentrated on one site favours DMR; scattered across provinces favours PoC. 2. What does an outage cost? If the answer includes safety, PoC alone is not sufficient. 3. What is the horizon? Over five years, subscriptions accumulate; over eighteen months they do not.

TechnoRF supplies Hytera PoC terminals, sets up the dispatch platform, configures groups and geofences, and — where the answer is neither one nor the other — builds the hybrid architecture that runs both. Get in touch.

Frequently Asked Questions

Is PoC a real radio or just an app?

Both exist and they are not equivalent. A PoC handset is built as a radio: a physical PTT key, a loud front-facing speaker, a rugged sealed body, an all-day battery and no distracting applications. A phone app on a consumer handset gives the same protocol with none of those properties, which is why it fails in an actual working environment.

What happens when the mobile network fails?

The system stops. This is PoC’s defining trade and it must be stated plainly: coverage is the operator’s coverage, and during a major incident commercial networks congest exactly when the operation needs them. Where that risk is unacceptable, PoC is combined with DMR or TETRA on infrastructure you own, rather than used alone.

Do PoC radios need a BTK frequency licence?

No. PoC uses the mobile operator’s licensed spectrum, so there is no frequency application and no repeater to authorise. In exchange there is a per-device monthly subscription, which is the cost model to compare against DMR’s higher one-off investment and near-zero running cost.

PoC or DMR — which is cheaper?

It depends entirely on geography and on time horizon. For a fleet scattered across provinces, DMR would need a repeater network that PoC replaces with a subscription, and PoC wins decisively. For one site with a hundred users, DMR pays for itself against subscriptions in roughly two to three years and then costs almost nothing. Calculate over five years, not over the purchase order.