What is TETRA?

  • Terrestrial Trunked Radio (TETRA) is the modern digital private mobile radio (PMR) technology.
  • It can be infrastructure like GSM network of infrastructureless like mobile ad hoc network.
  • TETRA offers services addressing mainly to public safety and security services.
  • This technology is used by the police, fire, ambulance, transport, security, and other emergency services.


  • Provides usual cellular services (One-to-One)
  • Professional radio services (group communication)
  • Instantaneous communication, both between individuals and within a group of an unlimited size.
  • Priority calls can be made.
  • Field workforce management services (Graphical Dispatcher Workstation)
  • Limited data services.
  • Maximum security.
  • Services cost less than other communications.
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