New Speech Related Features in GSM
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This section introduces and describes the three most recent speech related features which have been, or are being, introduced into GSM; the Enhanced Full Rate Codec (EFR), Tandem Free Operation (TFO), and the Adaptive Multi-rate Codec (AMR).
[1] Etsi Secretariat,et al. Digital cellular telecommunications system (Phase 2+); Enhanced Full Rate (EFR) speech transcoding , 1998 .
[2] R. Steele,et al. Mobile Radio Communications , 1999 .