Entropia integrates 4 (& later 5G) with TETRA and ComBus Push-to-talk [06/12/2019]

Entropia integrates ComBus Push-to-Talk and TETRA with 4 and 5G

The ComBus system consists of an easy-to-use application ComBus PTT that can be easily installed on a smartphone (with or without TETRA capability) and with a single user or a group of users can set up super fast communication. The smartphone application uses the 2G, 3G or 4G networks of mobile providers and WIFI. The voice message is hereby rapidly converted into data, encrypted and sent via the network of your mobile operator or WIFI to the recipient (s) of the voice message.

In addition, it is also possible to send or receive text messages and multimedia messages and you can stream video images from one point to one user or a group of users with our system. All call communication can also be recorded as standard without having to invest in expensive recording equipment and there is an availability module available so that you can easily and quickly see which users are available or not.

ComBus Dispatcher software can be supplied as standard on which all the functions already described above are also available. ComBus Dispatcher is a simplified yet complete control room application with integrated voice communication and card software that can be installed on a Windows computer or tablet. Via the built-in cartography it is possible to locate the users based on their GPS position. By pressing a button you can define an area on the map (geofencing) and create temporary conversation groups based on the location data of the users within this area.

The ComBus Push-to-Talk solution is a robust and complete system where the smartphone application, control room software and ComBus server are coordinated in such a way that calls are made super-fast. The platform is fully IP-based and is hosted in a secure cloud environment in our own state-of-the-art data centers. The system is built according to the international 3GPP MCPTT standard and is therefore ready for the evolution towards 5G. With ComBus PTT, a user can exchange information easily, quickly and real-time. This not only contributes to business productivity and efficiency, it also increases user safety.

A whole ecosystem of devices and accessories is available - which are also used with traditional radios (we think of headsets, earphones, speaker microphone, multi slot chargers, etc.) - allowing us to make a logical evolution from traditional Walkie-Talkies to our PTT service make it extremely easy for you.

Voice communication in group:


  • ability to communicate with a group of users at the touch of a button;
  • multiple groups: different groups can be created within your own fleet. From the smartphone you can switch between these groups. These discussion groups work completely independently of each other and will never disturb or hear each other;
  • scan conversation groups: it is possible to listen to different conversation groups at the same time;
    dynamic groups: the control room has the possibility to create a temporary discussion group and to communicate with it ad hoc and based on the GPS location of a group of smartphones;
  • individual calls: In addition to voice communication in a group, it is also possible to make individual calls. Users can then selectively call each other and have a one-to-one conversation without disturbing the rest of the conversation group.


Emergency calls

By simply pressing a button, an emergency call is established with which the person in need comes into direct contact with the control room and any users who scan the emergency call group. The control room receives a special notification in the ComBus software and the person in need is immediately visualised on the map.

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