TETRA - Digital Trunked Radio

The European standard Terrestrial Trunked Radio (TETRA) was developed by the European Telecommunications Standards Institute ETSI to meet the needs of a variety of Professional Mobile Radio (PMR) user organisations.

TETRA sets a new standard for efficiency of security or business related telecommunication applications. For many companies, the ability to make a group call for controlling vehicle fleets opens up new potentials for increased efficiency. The data transmission can be used to optimize the organisation of maintenance and service or to transmit mobile telemetry data. The only recurring costs are a basic monthly fee, which is a big advantage of trunked radio systems.

Aside from the fact that radio devices in a TETRA network can be used independently from a manufacturer and that communication with subscribers in other TETRA networks or other public and private networks is possible, its advanced manipulation, interference and bug proofness make it increasingly interesting to emergency and rescue services. 

Police, firemen, rescue services as well as the military can define their own encryption algorithms und parameters and, if needed, change them during operation.

The DMO mode also allows subscribers to establish a direct radio connection without the need for an infrastructure.  Compared to commercial use, emergency and rescue services have higher expectations in the areas of default probability, connection time and coverage, especially in sparsely populated areas, inside of buildings and at the edge of radio cells.

TETRA is also becoming increasingly interesting to industrial clients. Energy providers, for example, often operate their own communication networks.

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