UNE-ETS 300723 Ed2:2023 Digital cellular telecommunications system;Enhanced Full Rate (EFR) speech processing functions;General description (GSM 06.51 version 5.2.1) (Endorsed by Asociación Española de Normalización in January of 2023.)
2023UNE-ETS 300723 Ed2:2023 Digital cellular telecommunications system;Enhanced Full Rate (EFR) speech processing functions;General description (GSM 06.51 version 5.2.1) (Endorsed by Asociación Española de Normalización in January of 2023.)
2023UNE-ETS 300723 Ed1:2023 Digital cellular telecommunications system;Enhanced Full Rate (EFR) speech processing functions;General description (GSM 06.51) (Endorsed by Asociación Española de Normalización in January of 2023.)