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ETSI TR 146 085
M00005240
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ETSI TR 146 085 Digital cellular telecommunications system (Phase 2+); Subjective tests on the interoperability of the Half Rate / Full Rate / Enhanced Full Rate (HR/FR/EFR) speech codecs, single, tandem and tandem free operation (3GPP TR 46.085 version 8.0.0 Release 8)
standard by European Telecommunications Standards Institute, 02/01/2009
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