ETSI EN 300 972

ETSI EN 300 972
ETSI EN 300 972 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Discontinuous Transmission (DTX) for half rate speech traffic channels (GSM 06.41 version 6.0.1 Release 1997)

standard published 06/01/1999 by European Telecommunications Standards Institute

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