TETRA is one of the leading standards in digital radio, an abbreviation of Terrestrial Trunked Radio. It has been defined and approved by the European Telecommunications Standards Institute (ETSI) to be the official European Standard for digital Professional Mobile Radio (PMR). TETRA offers both the usual cellular services as well as professional radio services such as group communication, field workforce management services (dispatching) and efficient data services.

                                                                 PROFESSIONAL RADIO COMMUNICATIONS

TETRA is a unique combination of group voice communications, mobile telephony and mobile data services specifically designed for authority use. TETRA is a purpose built technology that offers public safety and security organisations major advantages over conventional radio systems to. 

It was developed to meet the needs of the most demanding professional radio users who need fast one-to-one and one-to-many radio communication using voice and data in their daily work.TETRA fulfils the needs of professional users and replaces old analogue and proprietary radio communication systems that no longer meet professional radio communication needs. 


Instant call connection and push to talk operation to set up a call is probably one of the most important features in TETRA. In TETRA, a call is initiated with a push to talk button and connection is established in less than half a second. In addition, there is no need to answer the call – the calling party can start talking right away.

Another differentiating feature between TETRA and cellular services is group communication. In addition to individual calls, TETRA also supports group calls. The members of the groups are predefined and a group may consist of tens or even hundreds of members. With dynamic group number assignment and priority scanning, the terminal won’t miss important calls.

Direct mode operation (DMO) is a special operating mode in a TETRA terminal, in which TETRA radios can communicate directly with each other without the TETRA network. DMO enables communication in areas where network coverage is not available, for example in the basement of a building, where radio waves cannot propagate. 

                                                            TETRA APPLICATIONS

Typical TETRA users are public safety and security organisations such as police, fire and rescue forces.
TETRA can maintain effective radio communications in even the most extreme situations. Where other communications networks may fail, TETRA’s fault-tolerant design can survive the failure of individual network components, and continue to provide an unbroken service.

In disasters, people’s natural reaction is to call their relatives and friends. Public telephony and cellular services can become choked quickly. However, TETRA has built-in priority mechanisms that can be set up in advance to maintain communication between critical rescue units. 


Server/Base Station Gateways/Monitoting Tools Terminals Application
Taira TETRA Server TETRA Voice Gateway TH1n Slimline TETRA Radio Tactilon® Suite
DXTA TETRA Server Mobile Data Gateway TH9 Handheld  Tactilon Suite Secure MVNO
TB3 TETRA base station Inter-System Interface THR9 Ex Handheld  Tactilon Management
TB3C TETRA base station NetBoss XT® THR880i Handheld Tactilon Suite for hybrid nwks
CDD Server Element Monitor THR9i Handheld Tactilon Suite for dedicated bb
TETRA Connectivity Server   TPH900 Tetrapol Radio Tactilon Agnet
Tetrapol network modernization   Tactilon Dabat Smart Device TETRA System Rel 7
Tetrapol MBS      
IP Backbone