UNE-ETS 300969 Ed1:2023 Digital cellular telecommunications system;Half rate speech;Half rate speech transcoding (GSM 06.20 version 5.0.1) (Endorsed by Asociación Española de Normalización in March of 2023.)
2023UNE-ETS 300969 Ed2:2023 Digital cellular telecommunications system (Phase 2+) (GSM);Half rate speech;Half rate speech transcoding (GSM 06.20 version 5.1.1) (Endorsed by Asociación Española de Normalización in March of 2023.)
2023UNE-ETS 300969 Ed1:2023 Digital cellular telecommunications system;Half rate speech;Half rate speech transcoding (GSM 06.20 version 5.0.1) (Endorsed by Asociación Española de Normalización in March of 2023.)