Trunked radio systems

Terrestrial Trunked Radio (TETRA; formerly known as Trans-European Trunked Radio), a European standard for a trunked radio system, is a professional mobile radio and two-way transceiver specification. TETRA was specifically designed for use by government agencies, emergency services, (police forces, fire departments, ambulance) for public safety networks, rail transport staff for train radios, transport services and the military. TETRA is the European version of trunked radio, similar to Project 25.

German multinational electronics company

Integrated Digital Enhanced Network (iDEN) is a mobile telecommunications technology, developed by Motorola, which provides its users the benefits of a trunked radio and a cellular telephone. It was called the first mobile social network by many technology industry analysts. iDEN places more users in a given spectral space, compared to analog cellular and two-way radio systems, by using speech compression and time-division multiple access (TDMA).

class of a radio system

Standards for public safety digital mobile radio used in North America

TETRAPOL (short for TErrestrial TRunked RAdio POLice) is a digital professional mobile radio standard, as defined by the TETRAPOL Publicly Available Specification (PAS), used by professional user groups such as public safety, military, industry and transportation organizations throughout the world. Airbus Defence and Space is the main supplier of this technology.

MPT 1327 is an industry standard for trunked radio communications networks.