Short Answer
Push-to-Talk over Cellular, or PoC, utilizes LTE, 5G, or WLAN for group calls via an app or special device. It is suitable for cross-location teams, dispatch, logistics, field service, and hybrid communication concepts. Limitations include mobile coverage, priority, battery, app operation, data privacy, latency, and failure scenarios.
PoC is not a traditional operational radio, but it can be a valuable addition for many organizations.
How PoC Works
Rather than operating on its own radio frequencies, voice groups run over IP networks. Users press a PTT button in an app or on a suitable device; the server and platform distribute the group call.
Typical Applications
- Cross-location teams.
- Field service and logistics.
- Dispatchers with map and status functions.
- Supplement to operational radio in hybrid solutions.
Important Limitations
| Topic | Risk |
|---|---|
| Network | No connection without mobile or WLAN. |
| Priority | Not every PoC solution has operational priority. |
| Operation | Smartphones are not always glove-compatible. |
| Resilience | Check blackout and emergency operation separately. |
FAQ
Is PoC the same as radio?
No. It is IP-based group communication with radio-like operation.
When is PoC sensible?
When teams communicate over long distances and mobile coverage is available.
Does PoC replace operational radio?
Sometimes partially, but a careful assessment is necessary for critical local processes.
What is the difference to MCPTT?
MCPTT is a standardized mission-critical service with higher requirements for priority, availability, and integration.
Sources and Timeliness
This page was created on 06.07.2026. Technical and regulatory information must be verified with current manufacturer data, standards, frequency specifications, and location conditions for specific projects.