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Push-to-Talk over Cellular (PoC)

Mission-Critical Communication Without Radio Infrastructure

Replace Traditional Two-Way Radios With Nationwide PoC

Instant, secure push-to-talk group communication over LTE/5G - no repeaters, no frequency licenses, no coverage planning.

  

PoC is designed for professional operations that cannot afford communication failure.

Request a PoC Demo

The Problem With Traditional Radio Systems

Most two-way radio systems were designed for: Fixed locations, predictable coverage areas, limited scale - modern operations are none of those. 


  • Coverage gaps between sites
  • Repeaters becoming single points of failure
  • Long deployment times for new teams or locations
  • High upfront infrastructure costs
  • Ongoing licensing 

What Is Push-to-Talk over Cellular?

Push-to-Talk over Cellular (PoC) delivers instant voice communication using existing LTE and 5G networks. It provides the same push-button simplicity as traditional radios, but without the infrastructure limitations.


PoC works across:


  • Cities
  • Provinces
  • Countries


Anywhere there is cellular coverage.

How PoC Works

  • Users communicate using PoC devices or smartphones
  • Voice traffic is transmitted securely over LTE/5G
  • Centralized platforms manage users, groups, and permissions
  • Dispatchers and supervisors maintain full visibility and control


No base stations. No repeaters. No RF licensing.

Who PoC Is Designed For

PoC is ideal for operations that are: Mobile, Multi-site, Time-sensitive.


Common use cases:


  • Security companies managing multiple locations
  • Logistics and fleet operations
  • Construction projects with temporary sites
  • Event operations
  • Facilities and property management

Reliability & Network Resilience

A common concern is dependency on cellular networks.


The operational reality: Most organizations already rely on cellular networks for critical systems. PoC aligns with this reality.


  • LTE/5G networks are geographically redundant
  • Outages are localized, not system-wide
  • Priority SIMs and multi-network options are available

Security & Control

Enterprise-grade PoC platforms provide: 


  • Encrypted voice communication
  • User authentication and access control
  • Remote device disablement
  • Group-based permissions
  • Activity and usage logs


PoC delivers greater control and visibility than analog radio systems.

Dispatching System

Enterprise-grade PoC platforms provide an online web-browser based dispatching system for centralised management of PoC radios in the field:


  • Geolocation & historical route playback
  • Voice recording & playback
  • Radio online/offline & registration status
  • Text messaging
  • Video call & multimedia share/pull/push

Guard Patrol System

Enterprise-grade PoC platforms provide an online web-browser based guard patrol system for security & guarding applications:


  • Patrol route set-up, customisation & live monitoring
  • Rich reporting
  • Works with RFID patrol checkpoint tags and NFC/GPS enabled radios

South African Hosted PoC Infrastructure

Built for Reliability. Built for Stability. Built for Compliance.


Smart Radio Systems operates on Cape Town–based Push-to-Talk over Cellular (PoC) server infrastructure, not an overseas-hosted platform, which means Ultra-Low Latency Communication. For security teams, fleet operators, control rooms, and event command — response time is operationally critical.


Because our servers are hosted locally in Cape Town:


  • Calls connect faster 
  • Audio delay is significantly reduced
  • Voice transmission is more natural and real-time
  • Performance remains stable during peak international congestion
     

Reduced Dependence on International Bandwidth:


Many PoC providers route traffic through Europe, Asia or the United States. When submarine cables experience congestion or outages, performance suffers.


Our locally hosted infrastructure means:


  • Minimized reliance on international routing
  • Reduced exposure to global network disruptions
  • Improved uptime stability within South Africa
  • Direct local technical support
  • Issues are escalated internally
  • There are no overseas support queues
  • Fault diagnosis and resolution are faster

How Smart Radio Systems Delivers PoC

We do not sell generic devices.


We design PoC systems around your operational requirements:


  • Coverage assessment
  • Device selection
  • Group and workflow design
  • Deployment and onboarding
  • Ongoing support


This ensures PoC works in real-world conditions, not just on paper.

Evaluate PoC in Your Environment

The fastest way to determine suitability is through a PoC demo or trial.


What the demo includes:


  • Live PoC system walkthrough
  • Coverage and use-case discussion
  • Comparison with your current radio setup

Request a PoC Demo

Download Our Practical Comparison Guide

Traditional Two-Way Radio vs Push-to-Talk Over Cellular (PoC) (pdf)Download

Smart Radio Systems (Pty) Ltd.

Flamingovlei, 7441, Cape Town, South Africa

+27 83 232 0782

Copyright © 2022 Smart Radio Systems(Pty) Ltd. - All Rights Reserved.

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