TETRA applications
for ACCESSNET®-T IP

A good and flexible radio solution for professional users is judged on its ability to integrate and adapt. The ACCESSNET®-T IP TETRA radio system from HMF can be supplemented by numerous functions via an application interface.

The powerful functions of our ACCESSNET®-T IP TETRA radio system are easy to access thanks to the ACCESSNET®-T Common Application Programming Interface (A-CAPI). With the help of A-CAPI, applications can participate in the communication via the trunked radio system like a radio subscriber with voice and data services and call up further functions.

Dispatcher: TETRA control rooms
with ACCESSNET®-T IP

Dispatchers are an important component of professional radio solutions. These are required to coordinate and conduct the radio subscribers and their communication in the network. They can also be used as logistic and control rooms or can serve as a centre for monitoring alarm functions.

Dispatchers administer operation data, call groups and radio subscribers and manage operational communication. The working environment of the dispatcher is made up of a PC workstation with the dispatcher software, the corresponding audio accessories and optional expansions such as a foot-operated PTT button or headsets. To be able to meet the requirements of the different user groups, the dispatcher can flexibly be adapted optimally to the various demands in terms of availability, scalability and network size.

Voice Recorder: Voice and SDS Recording

Especially in TETRA systems serving public safety and passenger transport, proof of communication may be a legal requirement for the deployment of security forces or for the operation of the means of transport. The use of voice and data recording helps to reconstruct sequences and procedures afterwards and thus makes it possible to clarify circumstances.

The Voice Recorder is a professional multi-channel voice and data recording system that is especially tailored to archiving digital audio data and short data messages (SDS). Digital audio data from a TETRA network is efficiently TETRA-coded. This ensures the largest possible recording capacity. Recorded audio data can be played back directly via the voice recorder or exported to downstream IT applications.

AVL: Locating persons and terminals via Automatic Vehicle Location (AVL)

Using AVL-expansions, it is possible to display current topical position data of terminals on a map. In this case, the terminals determine their position via GPS at intervals and automatically send this data via SDS to the dispatcher to be displayed on a digital map. This also allows motion profiles to be displayed for individual terminals to optimize operational sequences and processes.

The AVL system can either be used as a dispatching and assignment control unit to control and manage emergency forces and vehicle fleets or it serves as an alarm centre for monitoring, alarming or control functions. In this way it is possible to record numerous operational vehicle characteristics such as the filling level in gritting trucks. Due to the information being refreshed continuously, vehicle fleet managers and dispatchers can optimally plan and control the operations of their vehicles.

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