T.Flex is an all-in-one Mission Critical communications powerhouse that connects people in a variety of ways in a wide range of situations. Its capabilities comprise Voice and Video Calls, Messaging, Tracking (including Indoor Localization), Task Management and more.

What is T.Flex?

T.Flex is TASSTA’s application designed for smartphones and tablets.

T.Flex runs on IP networks (2G/3G/4G/Wi-Fi) powered by the most popular operating systems Android and iOS. It grants users maximum operational capability with a modern user interface and keeps high availability even on slow data networks.

T.Flex provides always-on PTT operation, Messaging, Status Messages, Voice Recording, and GPS Location Management. T.Flex can run alongside your other business applications, enabling device integration capabilities. Fully managed by T.Commander, instances of the T.Flex application are always under your control. The application also includes additional features for handling critical situations.

T.Flex Features

Group Call

This is the core functionality of any two-way radio system. Push-to-Talk (PTT) allows a single person to reach hundreds of users, organized in groups, with a single button press. TASSTA supports PTT group calls over high-speed IP networks and provides superb audio quality. With T.Rodon, it’s possible to make multiple group calls and see all users on the network on one or more screens.

Individual Call

This type of call allows users to communicate privately outside a group. A one-to-one simplex call is easy and fast to set up; this feature gives dispatchers a means for secure user-to-user simplex voice communications with the press of a button. A private message can be conveyed between a user in the field and the dispatch point. The user rejoins their groups when the personal call is completed.

Priority Call

TASSTA users can be assigned a priority level. Often, dispatchers are given the highest priority on the network, allowing them to take control of the channel to coordinate events. Priority calls give them the ability to take over the channel from subscribers in the field and ensure their messages get through.

Emergency Call

The Emergency Call feature is designed to keep the T.Flex user safe and in contact with help. It is intended for use in emergency or distress situations. The T.Flex user initiates the Emergency Call from the touchscreen or a pre-programmed emergency button on the device. This immediately sends an alarm (tones) to other users and the dispatcher, alerting them of an emergency. The user is immediately granted a voice channel for hands-free communication. The emergency stays in place until the situation is resolved. If GPS is enabled, others know the location of the person in distress.

Remote Control

The T.Flex operator can access the microphone or camera of the desired user remotely. It can be essential for critical environments like security services or the military, where the person can be attacked or is working under high-risk conditions.

Text and Data Exchange

The application provides real-time exchange of free-form text messages among individual users or groups. The addressee of your message gets an instant notification (tone and icon). Messages are color-coded to indicate if they have been read. Offline users receive their messages immediately when they reconnect to the network.

Status Messages

TASSTA Status Messages are predefined or user-defined. Predefined status messages enable the most efficient notification about the most common statuses. T.Flex users can send and receive Status Messages that are preconfigured in T.Commander. Both point-to-point (individual) and point-to-multipoint (group) messages are supported.

Lone Worker Protection

Lone Worker Protection (LWP) is based on automatic emergency notifications (Man Down). The accelerometer on the mobile device is used for detecting a fall, and a text message alert is sent to the emergency contact if this happens. Automated Man Down alerting has proven to be an effective way to make the workplace a safer and healthier place for employees on all levels. TASSTA LWP is an emergency beacon in an employee’s pocket. Whether lone workers are working in a remote or dangerous location or are temporarily separated from their team, it keeps the user connected to people.

Voice Recording and Call History

The TASSTA System has unparalleled voice recording and call history capabilities, allowing users to go back to a missed call or listen to a message that was left while they were offline. TASSTA can maintain call records on the network for months’ worth of voice communication among users. To view call details and replay records, use the T.Flex History interface accessible from the main menu. This feature is managed entirely in T.Commander, putting you 100% in control of the network.

GPS Localization

T.Flex is integrated with the GPS receiver on the mobile device (smartphone or tablet). Tracking information from each user can be uploaded to the network in real-time. Users can track themselves or other users on a map within their T.Flex interface; the data is accurate to the house number. Localization is a great way to maintain location awareness of team members and to help respond quickly in an emergency.

GPS History Tracker

Depending on customer requirements, the mobile devices can quickly turn into a cost-effective, portable communication terminal, with an unlimited coverage area. This is made possible by GPS tracking functionality.

GPS Route

One of the compelling features of T.Flex is the ability to see user locations on the map. On the T.Flex map, you can see TASSTA users’ locations in real time, accurate to the house number. GPS data from each user can be retrieved from the TASSTA server to draw the route for a particular time frame.

Task Management

The application offers advanced capabilities for managing inventory, invoices, and tracking deliveries. The Task Manager provides users with issue management capabilities. It includes manual and automated processing algorithms with real-time status updates, user management, positioning, reporting, and administrative information. What’s more, the data can be integrated into other TASSTA services, web clients, and external databases.

Indoor Localization

Determine your own and other users’ indoor location. Indoor Localization is a significant complement to GPS. Unlike GPS, it does not provide global coverage, but it is more accurate, efficient, and adaptive to local enclosed environments such as airports, metro stations, tunnels and other areas.

T.Flex Certificates

TASSTA T.Flex is FirstNet Certified

FirstNet is the nationwide communications platform dedicated to America’s first responders and public safety community. FirstNet is purpose-built to enable the important work performed by first responders. FirstNet offers technology, features and functionality designed to properly handle the rigorous and unique demands of first responders. With this much-needed technology upgrade, first responders can connect to the critical information they need every day and in every emergency.


The TASSTA LWP passed the German DGUV Test, receiving the GS-certification. This German certification is recognized worldwide and it is very similar to the British BS 8484.