Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Quality of Service Class and Parameters indication at call/connection establishment - Part 1: Protocol specification (ITU-T Recommendation Q.2965.1 (1999) and Q 2965.2 (1999), modified) (Endorsement of the English version EN 301815-1 V 1.1.1 (2000-12) as German standard)
Edition 2001-05

Integrated Services Digital Network (ISDN) - Generic keypad protocol for the support of supplementary services - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 300122-2 V 1.2.4 (1998-06) as German standard)
Edition 2000-01

Integrated Services Digital Network (ISDN) - Supplementary service interactions; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300195-5 V 1.3.3 (2000-05) as German standard)
Edition 2000-10

Integrated Services Digital Network (ISDN) - Advice of Charge (AOC) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300182-5 V 1.4.1 (2001-06) as German Standard)
Edition 2002-03

Integrated Services Digital Network (ISDN); Direct Dialling In (DDI) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 300064-2 V 1.3.4 (1998-06) as German standard)
Edition 1999-12

Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300185-5 V 1.2.4 (1998-06) as German standard)
Edition 2000-01

Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300185-4 V 1.3.3 (2000-05) as German standard)
Edition 2000-10

Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol - Closed User Group (CUG) supplementary service - Part 1: Protocol specification (ITU-T Q.2955.1:1996, modified) (Endorsement of the English version ETS 300770-1:1998 as German standard)
Edition 2000-01

Integrated Services Digital Network (ISDN) - Supplementary service interactions; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsement of the English version EN 300195-4 V 1.2.1 (2000-11) as German standard)
Edition 2001-05

Integrated Services Digital Network (ISDN); User-to-User Signalling (UUS) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (Endorsement of the English version EN 300286-6 V 1.4.1 (2003-01) as German standard)
Edition 2003-11