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- BAM - Bundesanstalt für Materialforschung und -prüfung
- DIN Media - DIN Media GmbH
- BMWK - Bundesministerium für Wirtschaft und Klimschutz
- DIN - Deutsches Institut für Normung
- PTB - Physikalisch-Technische Bundesanstalt
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DIN EN 301255
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Message waiting indication supplementary service (ISO/IEC 15506 (2003), modified) (Endorsement of the English version EN 301255 V1.2.1 (2004-01) as German standard)
DIN EN 301256
Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call interception Additional Network Feature (ANF) (ISO/IEC 15053 (2003), modified) (Endorsement of the English version EN 301256 V1.2.1 (2004-01) as German standard)
DIN EN 301254
Private Integrated Services Network (PISN) - Specification, functional model and information flows - Advice of charge supplementary services [ISO/IEC 15049 (1997) modified] (Endorsement of the English version EN 301254 V1.2.1 (2003-06) as German standard)
DIN EN 301253
Fixed radio systems - Point-to-multipoint equipment - Frequency Hopping Code Division Multiple Access (FH-CDMA); Point-to-multipoint digital radio systems in frequency bands in the range 3 GHz to 11 GHz (Endorsement of the English version EN 301253 V 1.2.1 (2001-02) as German Standard)
DIN EN 301251
Digital cellular telecommunications system (Phase 2) - Fault management of the Base Station System (BSS) (GSM 12.11 version 4.2.1) (Endorsement of the English version EN 301251 V4.2.1 (1998-12) as German standard)
DIN EN 301250
Digital cellular telecommunications system (Phase 2) - Test sequences for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.54 version 4.0.1) (Endorsement of the English version EN 301250 V 4.0.1 (1998-09) as German standard)
DIN EN 301249
Digital cellular telecommunications system (Phase 2) - Voice Activity Detector (VAD) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.82 version 4.0.1) (Endorsement of the English version EN 301249 V 4.0.1 (1997-12) as German standard)
DIN EN 301247
Digital cellular telecommunications system (Phase 2) - Comfort noise aspects for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.62 version 4.0.1) (Endorsement of the English version EN 301247 V 4.0.1 (1997-12) as German standard)
DIN EN 301248
Digital cellular telecommunications system (Phase 2) - Discontinuous Transmission (DTX) for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.81 version 4.1.1) (Endorsement of the English version EN 301248 V4.1.1 (2000-04) as German standard)
DIN EN 301246
Digital cellular telecommunications system (Phase 2) - Substitution and muting of lost frames for Enhanced Full Rate (EFR) speech traffic channels (GSM 06.61 version 4.0.1) (Endorsement of the English version EN 301246 V 4.0.1 (1997-12) as German standard)





