ETSI TR 146 085
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 4.0.0 Release 4)
standard published 03/01/2001 by European Telecommunications Standards Institute
