For long, the enterprise communications conversation has focused primarily on office and knowledge workers. Cloud calling, video conferencing, team messaging, contact centers, and AI-powered collaboration have transformed how employees communicate from desks, home offices, and meeting rooms.
While those are all necessary tools and technologies, they overlook a large part of the enterprise workforce that operates somewhere else entirely.
Security officers, warehouse employees, drivers, construction crews, facilities teams, field technicians, hospitality workers, and healthcare support staff frequently need to communicate while moving through buildings, job sites, vehicles, campuses, and cities. They may be wearing gloves, working in loud environments, responding to urgent incidents, or coordinating groups of people who cannot stop to place a phone call or join a video meeting.
For these workers, one of the simplest communications experiences remains one of the most effective: Press a button, speak to an individual or group, and continue working.
For decades, the two-way radio filled that need. Radios were rugged, immediate, and easy to operate. At the same time, their usefulness was often constrained by the reach of an organization’s repeaters, base stations, and radio infrastructure. Once employees moved beyond that coverage area, communications became more difficult or disappeared altogether.
Push-to-Talk over Cellular (PoC) removes much of that geographic limitation by combining the immediacy of two-way radio with the collective reach of cellular and Wi-Fi networks. It does not replace every phone, radio, or collaboration platform — that’s not its intent. Instead, it is becoming an important part of the broader enterprise communications environment, particularly for organizations with distributed and frontline workforces.
Radio Simplicity Meets Broadband Connectivity
PoC provides individual and group communications over 4G/LTE (News - Alert ) and 5G cellular networks, and Wi-Fi networks. Rather than requiring an enterprise to build and maintain its own network of repeaters and towers, PoC uses existing carrier and IP infrastructure to create a radio-style communications network that can extend across a facility, a metropolitan region, or the country.
The concept traces its commercial roots to Nextel, which helped popularize cellular push-to-talk through its iDEN network. Sprint (News - Alert ) eventually acquired Nextel and shut down the iDEN network in 2013, but the demand it demonstrated for instant, wide-area group communications never disappeared.
Modern PoC builds on the same concept, carrying the PTT experience forward using broadband IP networks and cloud-based platforms.
PoC is sometimes described as Radio over IP (RoIP). The comparison to VoIP is useful. A dedicated PoC radio, rugged smart device, smartphone application, or vehicle-mounted unit connects to the internet through a cellular data plan or Wi-Fi network. A cloud-hosted or privately operated PoC platform then manages users, talk groups, permissions, device status, messaging, location services, and dispatch operations.
What’s important is the user experience remains intentionally simple. A worker selects a person or talk group, presses the push-to-talk button, and speaks. Everyone authorized to participate in that group can hear the message almost immediately.
Behind that familiar interaction, however, is an increasingly sophisticated software environment.
Modern PoC platforms can support one-to-one and group calling, predefined and dynamically created talk groups, text and image messaging,
GPS location tracking, geofencing, emergency alerts, route histories, device management, and dispatcher visibility. Some platforms also provide video calling, media sharing, and support for body-worn cameras.
Because many PoC devices run Android (News - Alert ), they may also support operational applications in addition to voice communications. A rugged smart device, for example, could potentially combine push-to-talk with work orders, barcode scanning, inventory applications, fleet management, video surveillance, or other business workflows.
That convergence is important because it allows enterprises to think about PoC as more than a replacement for an older radio system. It can become part of a broader operational communications platform connecting employees, supervisors, dispatchers, devices, and applications. There’s real value in that integration capability.
Market projections continue to reflect growing demand. Persistence Market Research estimates the global PoC market was worth approximately $3.54 billion in 2025 and projects it will reach $6.99 billion by 2032, representing a compound annual growth rate of 9.7%. Fortune Business Insights projected growth from $1.9 billion in 2024 to $4.0 billion in 2032, a similar 9.98% CAGR. IMARC Group offers a somewhat larger estimate, valuing the market at $5.9 billion in 2025 and forecasting it will reach $11.6 billion by 2034. Although research firms define and measure the market differently, the consistency across them is growth: PoC adoption is expected to expand steadily through the coming decade.
Several factors are driving that momentum. Frontline workforces are more geographically distributed, enterprises are operating across more sites, and organizations increasingly want communications systems that can be centrally managed as software. Expanding cellular coverage, more capable rugged devices, improved enterprise Wi-Fi, and the adoption of private wireless networks are also making PoC practical in more environments.
In other words, the experience has always been desirable. Now, there is a greater need than ever, and modern technology makes it easier to deploy reliably and at enterprise scale.
PoC Is Still a Network Quality Project
The ability to use existing cellular and Wi-Fi infrastructure is one of PoC’s biggest advantages. But, “existing” should not be confused with “automatically ready.”
Real-time voice is sensitive to latency, jitter, packet loss, congestion, and inconsistent coverage. A network that performs adequately for email, web browsing, and other ordinary applications may not deliver clear and consistent push-to-talk voice.
PoC devices typically use a combination of UDP (News - Alert ) and TCP traffic. Because real-time UDP voice packets are not retransmitted in the same way as conventional data, delayed or lost packets can cause clipped, broken, or robotic-sounding audio.
The bandwidth requirements of an individual radio are relatively modest. A transmitting device may send approximately 50 Kbps of voice traffic, while each participating radio receives its own stream. In a ten-person talk group with one person speaking, that can mean roughly 50 Kbps upstream from the transmitting radio and a combined 450 Kbps downstream to the other nine devices.
At enterprise scale, however, multiple talk groups may be operating simultaneously alongside video surveillance, guest Wi-Fi, IoT systems, business applications, and other network traffic. Video calls and media sharing can add considerably more demand than voice alone.
That means organizations relying on Wi-Fi should validate coverage everywhere employees will use PoC devices — not just in offices and conference rooms. Warehouses, loading docks, stairwells, parking structures, elevators, basements, outdoor work zones, and transition points between buildings may all be operationally significant.
Voice traffic may need QoS prioritization or separation from less critical applications through dedicated network segments or VLANs. Roaming between access points should also be tested, along with the transition between Wi-Fi and cellular service when users enter or leave a facility.
This makes PoC both an enterprise communications project and an RF and IP networking project. IT departments should work with experienced wireless and communications specialists to perform coverage surveys, identify dead zones, validate network capacity, test roaming, and assess how the system performs under actual working conditions.
Carrier coverage should also be considered. A provider may describe a service as “nationwide,” but we all know performance in certain locations isn’t optimal. It’s something everyone has experienced. Even on a nationwide network, performance at a specific warehouse, construction site, rural route, or concrete building will depend on local signal strength and network conditions. Enterprises may need to consider carrier diversity, redundant connectivity, private LTE or 5G, or fallback procedures for locations where public cellular service is unreliable. Modern PoC devices help by supporting multi-carrier SIM cards, which enable connectivity to three different mobile operator networks. That means, if a call is dropped or a signal is lost, the device can switch over to another carrier.
Not all PoC deployments require the same degree of resilience. For many commercial organizations, standard cloud-based PoC provides more than enough reliability. Public safety agencies, utilities, critical infrastructure operators, and other organizations with stringent operational requirements may need to evaluate standards-based Mission Critical Push-to-Talk (MCPTT).
3GPP completed its initial MCPTT work as part of Release 13 in March 2016, establishing specifications intended to support mission-critical group communications over LTE. Subsequent releases expanded those capabilities to include mission-critical data, video, and additional architectural improvements.
None of this should be seen as a negative. All communications systems need network reliability commensurate with their needs. Not every commercial PoC service complies with MCPTT standards, nor does every enterprise need it. But, it makes sense for enterprise buyers to distinguish between communications that are important to business operations and those that must meet formal mission-critical requirements involving priority, availability, interoperability, and defined performance.
The PoC Subscription Deployment Model
PoC is typically delivered through a subscription-based cloud service. The platform provider operates the servers and supporting infrastructure, while the customer pays for devices and recurring service. This model is attractive to organizations that want rapid deployment, broad coverage, and limited infrastructure maintenance responsibility. It’s the same reason the managed IT services market continues to grow. Business simply want the technology they need to be there and to work.
Hytera’s HORIZON portfolio provides one example of how vendors are packaging these capabilities into a broader enterprise PoC environment.
HORIZON is a subscription-based service providing nationwide individual and group calling over cellular and Wi-Fi networks. Hytera positions the platform around cloud-based PoC servers, its family of dedicated radios and smart devices, and the HORIZON Dispatch web application.
HORIZON Dispatch gives supervisors and dispatchers centralized visibility into communications and field personnel. The platform supports instant voice and video calling, GPS location tracking, messaging, emergency monitoring, geofencing, and the creation of temporary or permanent talk groups. The HORIZON architecture includes geographically diverse failover infrastructure designed to ensure service resilience.
That combination illustrates how PoC has evolved beyond basic voice. A dispatcher can see where employees are located, contact a specific worker, broadcast instructions to a team, review travel routes, receive an emergency alert, and potentially view video or images from the field.
Hytera also supports different endpoint types for different jobs. Compact devices such as the PNC360S retain the familiar form and physical push-to-talk button of a traditional radio, while adding 4G/LTE, Wi-Fi, GPS, Bluetooth, and IP-based communications. Larger smart devices, such as the PNC560S, combine PoC with an Android mobile computing environment that can support business applications as well as voice, video, and messaging.
This flexibility is important. Enterprise deployments rarely involve one kind of worker. A warehouse employee may need a compact radio with long
battery life and one-handed operation. A delivery driver may need a vehicle-mounted device. A security supervisor may require video, maps, and business applications. A dispatcher needs a desktop interface that brings all of those users together.
Another feature of PoC systems is cross-enterprise calling. This enables two different companies on the same PoC system to create a shared group call between them. This is especially useful because many operations involve more than one company.
For example, a security contractor may need to communicate with a property manager. A school district may need to communicate with a transportation provider. A venue may need to connect event staff, security, parking, and maintenance contractors. A logistics company may need to coordinate with warehouse teams or third-party carriers.
Cross-enterprise calling helps solve a common interoperability problem. Instead of forcing every organization to use the same private radio system or carry multiple radios, approved users can join shared talk groups while still keeping their internal communications separate.
Modernization Does Not Have to Mean Replacement
Many enterprises considering PoC already operate analog or Digital Mobile Radio (DMR), analog, or other two-way radio systems. Those networks may continue to provide dependable local coverage and represent significant investments in radios, repeaters, antennas, and operating procedures.
Replacing everything at once may be unnecessary — not to mention financially difficult.
Gateways and integrated dispatch platforms can connect existing land-mobile radio systems with PoC services. Local workers can continue using traditional radios inside a facility, while employees outside the coverage area use cellular-capable PoC devices. Both groups can potentially communicate through shared talk groups or a unified dispatch environment.
This phased approach is often more practical than a complete rip-and-replace project. It gives organizations a way to extend the reach of an existing radio system, equip remote or mobile employees, and gradually modernize devices and workflows.
For enterprises looking at PoC systems, interoperability should be a central consideration. Can a PoC platform can connect to an existing analog or DMR infrastructure? Can dispatchers manage both environments from a single platform? What additional gateways, licenses, or integration services will be required?
It’s also wise to consider other integrations, beyond radio. Because PoC platforms are software-based and many devices run on Android, they may connect with telephony, video surveillance, body cameras, alarms, fleet management, workforce applications, and other operational systems.
The longer term opportunity is not simply to replace one radio with another, but to understand the broader value of building an operational communications environment in which people, locations, devices, and applications all work together.
Choosing the Right PoC Approach
Naturally, there are many variables to think about. For any business, the appropriate PoC architecture will depend on workforce size, geographic requirements, existing infrastructure, security policies, device needs, and the consequences of a service disruption. But, there are several considerations that should be key to any purchasing decision.
Before selecting a system, enterprises should determine where employees will use it, which cellular networks provide adequate coverage, how well Wi-Fi performs in operational areas, and what should happen when neither network is available.
From a security and management perspective, buyers should understand encryption, user authentication, role-based permissions, device provisioning, audit records, remote disablement, data retention, and platform redundancy.
Larger companies can benefit from managing their own PoC system. Companies with hundreds or even thousands of users, multiple facilities, regional operations, and diverse departments require centralized administration and the ability to manage communications consistently across the organization. In those cases, it’s important to choose a platform that provides access to the PoC System Operations Management software and complete control over the PoC system deployment, administration, and ongoing management. This way, companies can configure call groups by job type or location, update radios with over-the-air programming, add and remove users, and generate detailed usage and traffic reports.
Dispatch capabilities should be evaluated in the context of actual workflows. Can supervisors create or change groups without involving IT? Can dispatchers locate workers, establish geofences, monitor emergencies, share media, and coordinate multiple sites? Can the platform integrate with existing radio networks and business applications?
When is comes to the devices themselves, there are options. Battery life, speaker volume, noise suppression, durability, physical controls, camera support, accessory availability, and operation while wearing gloves may matter more to frontline users than an extensive software feature list. Other groups may have different needs. That’s why choosing a vendor who can support different device types matters.
Maybe most important is a live test. Organizations should test PoC under real working conditions. A conference-room demonstration cannot reproduce a noisy manufacturing floor, crowded warehouse, concrete stairwell, moving vehicle, rural service route, or large event venue. It’s important to understand how a platform is going to perform in an organizations live environment.
None of that should be a deterrent. It’s the same kind of due diligence that should go into any technology investment — make sure what you’re buying will work for your needs.
The reality is PoC has matured beyond being a niche alternative to conventional radio. The networks are widely available, the devices are increasingly capable, and the platforms provide the centralized administration, visibility, and integration enterprises expect from modern communications technology.
Its strongest value proposition is not that it eliminates every radio, smartphone, or collaboration application — because it doesn’t and it’s not intended to. Its value is that it fills a very real and persistent gap in enterprise communications — immediate, group-oriented coordination for employees whose work does not happen at a desk.
The workforce has already become mobile and distributed. For enterprise communications leaders, the question is whether the communications environment supporting that workforce has kept pace.
Edited by
Erik Linask
