ets_30039310e01v.pdf - ETS 300 393-10 - Terrestrial Trunked Radio (TETRA); Packet Data Optimized (PDO); Part 10: SDL model of Air Interface (AI)

ets_30039501e01c.pdf - ETS 300 395-1 - Radio Equipment and Systems (RES); Trans-European Trunked Radio (TETRA); Speech codec for full-rate traffic channel; Part 1: General description of speech functions

ets_30039502e01c.pdf - ETS 300 395-2 - Radio Equipment and Systems (RES); Trans-European Trunked Radio (TETRA); Speech codec for full-rate traffic channel; Part 2: TETRA codec

ets_30039601e01v.pdf - ETS 300 396-1 - Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 1: General network design

ets_3003920403e01c.pdf - ETS 300 392-4-3 - Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 4: Gateways basic operation; Sub-part 3: Data networks gateway