ContentsForewordIntroduction1 Scope2 References3 Abbreviations4 Quality under error conditions (A-law, IRS), Experiment 15 Quality under error conditions (UPCM, No IRS), Experiment 26 Quality under tandeming conditions7 Quality under background noise conditions8 Assessment of equivalent qdu, Experiment 69 Talker dependency, Experiment 810 DTX System11 Performance with DTMF tones12 Performance with signalling tones13 Delay14 Frequency response14 Frequency response15 Half Rate codec complexity16 Summary of results from characterization Phase 1 and 2 13 Delay 3GPP46.008Half rate speechPerformance Characterization of the GSM Half Rate speech codecRelease 17TS Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM [tbd]