TETRA (English: TErrestrial Trunked RAdio) is a standard defined by the European Telecommunications Standards Institute. Defines a digital mobile radio system and born by decision of the European Union in order to unify several alternative interfaces for digital radio communications professionals.
The application of this global standard tetra is geared to specialized solutions in the Workplace, where features like security, Compatibility and Availability, the quality of the voice or the privacy of communications, are key factors in any public or private organization.
"Although it is a technology designed for large accounts and government, smaller companies and municipalities have also begun to incorporate ".
1.- Using a lower frequency band, which means less need for repeaters equipment to cover the same geographical area.
2.- Own separate infrastructure wireless networks public.
3.- You can work in terminal mode terminal, in case of communication failure.
4.- It is a modern digital system GSM, therefore the audio quality is superior to implement modern voice compression systems.
5.- The data transmission capabilities are defined in the original standard itself and are only comparable to the current standard GPRS.
6.- Better use of the channel, as it allows semi-duplex communications, as conventional radio.
7.- Low degree of saturation, since the standard itself ensures a capacity exceeding twice the default conventional channels in use.
8.- Allows one to many communications, which improves management groups should coordinate emergency communications.
9.- It has specific terminals for every need: Portable (comparable to mobile phones), mobile (vehicles) terminals and base.