Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Private Integrated Network eXchange (PINX) clock synchronization (ISO/IEC 15507 (1997), modified) (Endorsement of the English version EN 301259 V 1.1.1 (1998-10) as German standard)
Edition 2000-03

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 - Advice of charge supplementary services (ISO/IEC 15050 (2003), modified) (Endorsement of the English version EN 301264 V1.2.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call interception Additional Network Feature (ANF) (ISO/IEC 15054 (2003), modified) (Endorsement of the English version EN 301265 V1.2.1 (2004-01) as German standard)
Edition 2004-12

Digital Enhanced Cordless Telecommunications (DECT) - Integrated Services Digital Network (ISDN); ISDN Mobility protocol Interworking specification Profile (IMIP) - Part 1: DECT/ISDN interworking for Cordless Terminal Mobility (CTM) support (Endorsement of the English version EN 301361-1 V 1.1.1 (1999-10) as German standard)
Edition 2000-07

Digital Enhanced Cordless Telecommunications (DECT) - Integrated Services Digital Network (ISDN); ISDN Mobility protocol Interworking specification Profile (IMIP) - Part 2: DECT/ISDN interworking for Global System for Mobile communications (GSM) support (Endorsement of the English version EN 301361-2 V 1.1.1 (2000-02) as German standard)
Edition 2000-09

Universal Personal Telecommunication (UPT) - UPT phase 2 - Functional specification of the interface of a UPT Integrated Circuit Card (ICC) and Public Switched Telephone Network (PSTN), Integrated Services Digital Network (ISDN) and Global System for Mobile communications (GSM) terminals (one pass and multiple pass authentication); Conformance test specification (Endorsement of the English version EN 301363 V 1.1.2 (1999-05) as German Standard)
Edition 2001-08

Universal Personal Telecommunication (UPT) - UPT phase 2 - Functional specification of the interface of a UPT Integrated Circuit Card (ICC) and Card Accepting Devices (CADs); UPT card accepting Dual Tone Multiple Frequency (DTMF) device; Conformance test specification (Endorsement of the English version EN 301366 V 1.1.2 (1999-05) as German Standard)
Edition 2001-08

Digital Enhanced Cordless Telecommunications (DECT) - Integrated Services Digital Network (ISDN) - Attachment requirements for terminal equipment for DECT/ISDN interworking profile applications (Endorsement of the English version EN 301440 V 1.2.2 (1999-01) as German Standard)
Edition 1999-12

Private Integrated Services Network (PISN) - Cordless Terminal Mobility (CTM); Inter-exchange signalling protocol; Cordless terminal outgoing call additional network feature (ANF-CTMO) for the VPN "b" service entry point - Part 1: Test Suite structure and Test Purposes (TSS&TP) (Endorsement of the English version EN 301451-1 V 1.1.4 (2000-09) as German standard)
Edition 2001-05