Integrated Services Digital Network (ISDN) - Explicit Call Transfer (ECT) supplementary service - Functional capabilities and information flows (Endorsement of the English version EN 300368 V 1.2.2 (1998-12) as German standard)
Edition 2000-12

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call intrusion supplementary service [ISO/IEC 14845 (1996) modified] (Endorsement of the English version EN 300425 V1.3.1 (2003-06) as German standard)
Edition 2004-03

Digital Enhanced Cordless Telecommunications (DECT) - Global System for Mobile Communications (GSM); DECT/GSM interworking profile (IWP) - General description of service requirements; Functional capabilities and information flows (Endorsement of the English version EN 300466 V 1.2.1 (2001-01) as German Standard)
Edition 2002-05

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Transit counter additional network feature [ISO/IEC 15055 (1997) modified]; English version EN 301047 V 1.1.1 (1997.09)
Edition 1998-10

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Circuit-mode multi-rate bearer services [ISO/IEC 11584 (1996) modified]; English version EN 301049 V 1.1.1 (1997.09)
Edition 1998-10

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Support of Virtual Private Network (VPN) applications with Private network Q reference point Signalling System number 1 (PSS1) information flows - Part 1: Protocol specification (ITU-T Recommendations Q.765.1 and Q.699.1, modified); (Endorsement of the English version EN 301062-1 V 1.2.3 (1999-10) as German standard)
Edition 2002-11

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Support of Virtual Private Network (VPN) applications with Private network Q reference point Signalling System number 1 (PSS1) information flows - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301062-2 V 1.1.1 (2000-08) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Support of Virtual Private Network (VPN) applications with Private network Q reference point Signalling System number 1 (PSS1) information flows - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification (Endorsement of the English version EN 301062-3 V 1.1.1 (2000-08) as German Standard)
Edition 2001-09

Integrated Services Digital Network (ISDN) - Signalling System No. 7; Support of Virtual Private Network (VPN) applications with Private network Q reference point Signalling System number 1 (PSS1) information flows - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (Endorsement of the English version EN 301062-4 V 1.1.1 (2000-10) as German Standard)
Edition 2001-09

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)
Edition 2004-03