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ETSI EN 300 392-11-12

Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 12: Call Hold (CH)
standard by European Telecommunications Standards Institute, 01/01/2001
Publisher: ETSI

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To define the Stage 2 requirements for TETRA SS Call Hold

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