Understanding IP Radio: LTE and Beyond

In a world increasingly reliant on fast, secure, and reliable communication, IP-based radios have emerged as powerful tools across industries. This paper introduces the key concepts, types, and advantages of Icom’s IP radio solutions—including LTE, Wi-Fi, and hybrid models—to help you find the right system for your needs.

An IP radio is a two-way communication device that uses cellular networks for communication. The "IP" stands for "Internet Protocol," which is the standard that controls how devices communicate over internet protocol networks using unique IP addresses. Each IP radio is assigned its own IP address, enabling it to transmit and receive voice and data through internet-based networks.

What makes IP radios unique is that they combine the convenience of mobile networks with the key features of conventional two-way radios and advanced push-to-talk capabilities. Users can communicate in group calls using push-to-talk functionality, ensuring seamless coordination among team members. They also support instant voice transmission, so calls are delivered immediately without requiring the recipient to press a button to answer or hear a call. 

There are different names describing the various technologies behind IP radios systems. The term PoC (Push-to-Talk over Cellular) Transceiver highlights its ability to use mobile networks for instant push-to-talk communication, while IP Transceiver emphasizes its reliance on Internet Protocol for connectivity. LTE transceivers refer to the communication network they use.
Additionally, dual-mode IP radios are available that can provide LTE and Wi-Fi connectivity options like smart phones.

Push-to-Talk over Cellular (PoC) technology expands traditional push-to-talk communications by utilizing cellular networks, enabling communication beyond conventional radio range limitations. Advanced solutions offer flexibility through hybrid models that combine push-to-talk radio with conventional radio in dual-mode devices. RoIP (Radio over IP) gateway solutions convert radio signals into IP packets to enable communication over IP networks, enabling IP radios to seamlessly connect with existing conventional radio systems.

One of the biggest advantages of IP radios is their extensive coverage. As long as they are within a mobile network’s service area, they can be used anywhere in the country. If the cellular network is available, IP radios can even work in underground areas like tunnels, subway stations, parking garages, or basements.

IP radios operate over LTE networks and typically do not require a channel license, as they use existing mobile carrier services or wireless LAN connections. This eliminates regulatory paperwork and extra costs, enabling businesses to deploy communication systems quickly. However, ongoing costs are incurred for the required service contracts.

IP radios support simultaneous conversations, group calls, and broadcast messaging. Whereas conventional two-way radios typically require users to take turns speaking, Icom's IP radios provide simultaneous two-way communication, enabling more natural conversations. For more details: Simultaneous TalkListen

Additionally, unlike mobile phones, IP radios facilitate multi-user communication. Teams can create predefined groups for coordinated discussions or use broadcast mode to deliver messages to an entire team at once, ensuring efficient information sharing.

IP radios come equipped with GPS functionality, enabling location tracking. Administrators can monitor the whereabouts of personnel and vehicles, improving operational efficiency and safety. This feature is particularly useful for fleet management, security teams, and field service operations.

GPS mapping software required for GPS data.

IP radios provide secure, interference-free communication with superior audio quality and minimal background noise, ensuring clear conversations even in noisy environments. Icom's IP radios utilize telephony-grade broadband vocoder technology, delivering superior audio quality compared to general POC radios.

With IP radios, users don’t need to manually accept incoming calls like they would on a mobile phone. When a call is received, the audio automatically comes through a speaker or headset, enabling instant communication. This feature is especially beneficial in emergencies or hands-free work situations, ensuring that critical information is received without delay.

Compared to smartphone-based transceiver apps, IP radios offer faster response and easier operation. With a physical push-to-talk (PTT) button, users can start communicating instantly without fumbling with a touchscreen — especially critical in emergencies. Designed specifically for professional use, IP radios also feature long-lasting batteries, making them reliable for extended operations. In addition, IP radios provide higher security, with less risk of data leaks or unauthorized access often associated with smartphone apps.

Like many services nowdays, there is a recurring cost associated with using IP radios on a carrier's mobile network. However, in most cases, the monthly fees for IP radios are lower than standard mobile phone plans, making them a cost-effective alternative for businesses.

IP radios that rely on cellular networks cannot function outside of the carrier’s coverage area. In remote locations, such as mountainous regions or underground facilities where mobile signals are weak or unavailable, IP radios may not be usable. Additionally, if there is a network outage or disruption in the mobile carrier’s system, IP radios will be affected regardless of location. However, there are hybrid IP radios that can switch to land mobile radio or Wi-Fi networks in areas where carrier services are unavailable.

IP radios are available in several categories, each designed for specific use cases.

There are three types of IP radio systems based on the network services they utilize. It's important to know that these devices can operate on different network infrastructures depending on your specific requirements and security needs. Icom offers each of these IP radio system types.

Private LTE availability depends on local regulations in each country.

Thanks to their reliable mobile network connectivity and wide-area coverage, IP radios are also widely adopted by municipalities and government agencies.

IP radios provide numerous advantages. These include wide-area coverage, real-time group communication, and the convenience of radio features without licensing or registration requirements. Their ease of deployment makes them an ideal solution for a wide range of industries and operational environments.

As a leading provider of radio communication solutions, Icom offers high-performance IP radios tailored to business and institutional needs. Our products have been adopted by numerous companies, organizations, and municipalities. We also provide expert consultation to help businesses find the right communication solution. If you’re considering IP radios for your operations, feel free to contact us.