UNE-ETS 300726 Ed1:2023 Digital cellular telecommunications system;Enhanced Full Rate (EFR) speech transcoding (GSM 06.60) (Endorsed by Asociación Española de Normalización in January of 2023.)
2023UNE-ETS 300726 Ed2:2023 Digital cellular telecommunications system (Phase 2+) (GSM);Enhanced Full Rate (EFR) speech transcoding (GSM 06.60 version 5.2.1) (Endorsed by Asociación Española de Normalización in January of 2023.)
2023UNE-ETS 300726 Ed1:2023 Digital cellular telecommunications system;Enhanced Full Rate (EFR) speech transcoding (GSM 06.60) (Endorsed by Asociación Española de Normalización in January of 2023.)