1995ETSI PRETS 300 392-2-1995 Radio Equipment and Systems (RES); Trans-European Trunked Radio (TETRA); Voice Plus Data (V+D); Part 2: Air Interface (AI)
1994ETSI PRETS 300 392-2-1994 Radio Equipment and Systems (RES); Trans-European Trunked Radio (TETRA); Voice Plus Data (V + D) Part 2: Air Interface (AI)