Network or WLan Radios
Network radios are act like normal two way radios, but they work differently. Their biggest advantage is to extend the communication range beyond the capabilities of an RF system, but it's important to understand the differences. IP radios communicate through the internet via a wireless internet connection. So, your radio's range is only limited by your computer network. If you have offices on the same computer network, radios from one office can talk to the other locations, even if these offices are thousands of miles apart. Also, IP radios can be easier to implement. Most companies already have IT departments, which will readily understand these products. IP radios require a controller, which is connected to your network.
IP radios work well for businesses wanting to communicate within locations covered by their computer network.
LTE or Cellular Radios
LTE radios (also called Push-to-Talk Cellular) connect through a cell phone network (4G or LTE). The advantage, or disadvantage, is your radios work anywhere cell phone coverage exists. This can even allow you to communicate across the country. However, in remote areas with no cell coverage these radios will not work. LTE radios require cellular service, which requires a monthly fee per radio. The monthly service contract is obtained through the radio dealer.
Perfect for those looking for the longest range possible and easy setup, such as companies operating vehicle fleets in large metropolitan areas.
Satellite radios connect through an array of satellites know as the Iridium satellite constellation. The Iridium satellite constellation is a system of 66 active satellites (and 9 spares in space) used for worldwide voice and data communication from hand-held satellite devices and other transceiver units. Satellite radios require a monthly service fee for the satellite usage. These devices can communicate globally and in back-country areas where most other forms of communication are not available.
Perfect for those needing global or back-country remote communications, such as gas and oil exploration, back-country search and rescue operations, or other other companies needing global communications in areas where infrastructure does not exist.