Private Integrated Services Network (PISN) - Inter-exchange signalling protocol; Advice of Charge (AoC) supplementary services (ISO/IEC 15049 (1997), modified) - Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification (Endorsement of the English version EN 301483-1 V 1.2.2 (2000-09) as German standard)
Edition 2001-05

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol; Cordless Terminal Location Registration (CTLR) supplementary service - Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification (Endorsement of the English version EN 301454-1 V 1.1.4 (2000-09) as German standard)
Edition 2001-05

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol; Diversion supplementary services (ISO/IEC 13873 (1995), modified) - Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification (Endorsement of the English version EN 301453-1 V 1.1.2 (2000-11) as German standard)
Edition 2001-05

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol; Call completion supplementary service for the VPN "b" service entry point - Part 1: Test Suite structure and Test Purposes (TSS&TP) (Endorsement of the English version EN 301452-1 V 1.1.4 (2000-09) as German standard)
Edition 2001-05

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol; Diversion supplementary services - Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma (Endorsement of the English version EN 301453-2 V 1.2.1 (2002-01) as German Standard)
Edition 2002-11

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol; Call offer supplementary service - Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (Endorsement of the English version EN 301491-2 V 1.2.1 (2002-01) as German Standard)
Edition 2002-11

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Short message service [ISO/IEC 21990 (2002) modified] (Endorsement of the English version EN 301991 V1.1.1 (2003-06) as German standard)
Edition 2004-03

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call offer supplementary service (ISO/IEC 14843 (2003), modified) (Endorsement of the English version EN 300362 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Name identification supplementary service [ISO/IEC 13868 (2003), modified] (Endorsement of the English version DIN 300238 V1.3.1 (2004-01) as German standard)
Edition 2004-12

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Do not disturb and do not disturb override supplementary services (ISO/IEC 14844 (2003), modified) (Endorsement of the English version EN 300364 V1.3.1 (2004-01) as German standard)
Edition 2004-12