Digital cellular telecommunications system (Phase 2+) (GSM);Full rate speech;Discontinuous Transmission (DTX) for full rate speech traffic channels (GSM 06.31 version 7.0.1 Release 1998) (Endorsed by Asociación Española de Normalización in August of 2021.)
Digital cellular telecommunications system (Phase 2+) (GSM);Full rate speech;Discontinuous Transmission (DTX) for full rate speech traffic channels (GSM 06.31 version 7.0.1 Release 1998) (Endorsed by Asociación Española de Normalización in August of 2021.)
