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Terrestrial Trunked Radio (TETRA). Voice plus Data (V+D). Part 11: Supplementary services stage 2. Sub-part 20: Discreet Listening (DL)
Standard published on 1.7.2002
Selected format:Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 21: Ambience Listening (AL)
Standard published on 1.12.2003
Selected format:Terrestrial Trunked Radio (TETRA). Voice plus Data (V+D). Part 11: Supplementary services stage 2. Sub-part 22: Dynamic Group Number Assignment (DGNA)
Standard published on 1.4.2001
Selected format:Terrestrial Trunked Radio (TETRA). Voice plus Data (V+D). Part 11: Supplementary services stage 2. Sub-part 23: Call Completion on No Reply (CCNR)
Standard published on 1.4.2001
Selected format:Terrestrial Trunked Radio (TETRA). Voice plus Data (V+D). Part 11: Supplementary services stage 2. Sub-part 24: Call Retention (CRT)
Standard published on 1.8.2001
Selected format:Terrestrial Trunked Radio (TETRA). Voice plus Data (V+D). Part 12: Supplementary services stage 3. Sub-part 1: Call Identification (CI)
Standard published on 1.7.2002
Selected format:Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 1: Call Identification (CI)
Standard published on 1.7.2004
Selected format:Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 1: Call Identification (CI)
Standard published on 1.2.2008
Selected format:Terrestrial Trunked Radio (TETRA). Voice plus Data (V+D). Part 12: Supplementary services stage 3. Sub-part 2: Call Report (CR)
Standard published on 1.1.2002
Selected format:Terrestrial Trunked Radio (TETRA). Voice plus Data (V+D). Part 12: Supplementary services stage 3. Sub-part 3: Talking Party Identification (TPI)
Standard published on 1.9.2000
Selected format:Latest update: 2026-07-13 (Number of items: 2 286 490)
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