Terrestrial Radiophone (conventional or trunking)
Terrestrial communication Service in UHF and VHF, conventional or via trunking.
Aeronautic communication service via radio in HF e VHF.
Maritime communication Service via radio in HF e VHF.
Trunked Digital Tetra Radiophone
It is a digital radio communication service for mobile communications including two radio ways (full-duplex), telephony, and messages and data transference. The transmission of Tetra radio is carried out by TDMA (Time Division Multiple Access)