Private Integrated Services Network (PISN) - Service description, functional capabilities and information flows - Circuit-mode 64 kbit/s bearer services [ISO/IEC 11574 (2000) modified] (Endorsement of the English version EN 300171 V1.3.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Name identification supplementary services [ISO/IEC 13864 (1995) modified] (Endorsement of the English version EN 300237 V1.3.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call diversion supplementary service (ISO/IEC 13872 (2003), modified) (Endorsement of the English version EN 300256 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Path replacement additional network feature [ISO/IEC 13863 (1998), modified] (Endorsement of the English version EN 300258 V1.3.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Specification, functional models and information flows - Call transfer supplementary service (ISO/IEC 13865 (2003), modified) (Endorsement of the English version EN 300260 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call offer supplementary service [ISO/IEC 14841 (1996) modified] (Endorsement of the English version EN 300361 V1.3.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Do not disturb and do not disturb override supplementary services [ISO/IEC 14842 (1996) modified] (Endorsement of the English version EN 300363 V1.3.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call completion supplementary services [ISO/IEC 13866 (1995) modified] (Endorsement of the English version EN 300365 V1.3.1 (2003-06) as German standard)
Edition 2004-03

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