ETSI ETS 300 392-10-20
- Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 20: Discreet Listening (DL)
- standard by European Telecommunications Standards Institute, 05/01/1999
- Publisher: ETSI
$13.00$25.50
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