Private Integrated Services Network (PISN) - Specification, functional models and information flows - Message waiting indication supplementary service (ISO/IEC 15505 (2003), modified) (Endorsement of the English version EN 301260 V1.2.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Common information Additional Network Feature (ANF) (ISO/IEC 15772 (2003), modified) (Endorsement of the English version EN 301820 V1.2.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Wireless terminal authentication supplementary service (ISO/IEC 15433 (2003), modified) (Endorsement of the English version EN 301829 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Wireless terminal location registration supplementary service and wireless terminal information exchange Additional Network Feature (ANF) (ISO/IEC 15429 (2003), modified) (Endorsement of the English version EN 301825 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call identification and call linkage Additional Network Feature (ANF) (ISO/IEC 21889 (2001), modified) (Endorsement of the English version EN 301923 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Simple dialog supplementary service (ISO/IEC 21408 (2003), modified) (Endorsement of the English version EN 301921 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Use of QSIG at the C reference point between a PINX and an interconnecting network (ISO/IEC 20161 (2001), modified) (Endorsement of the English version EN 301914 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Single step call transfer supplementary service (ISO/IEC 19460 (2003), modified) (Endorsement of the English version EN 301919 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Corporate telecommunication Networks (CN) - Signalling interworking between QSIG and H.323 - Call transfer supplementary service (ISO/IEC 21410 (2001), modified) (Endorsement of the English version EN 301907 V1.1.1 (2004-01) as German standard)
Edition 2004-12

Acoustics - Software products for the calculation of the sound propagation outdoors - National supplement to DIN ISO 17534-1
Edition 2022-05