Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control - Part 2: Specification and Description language (SDL) diagrams (Endorsement of the English version EN 300403-2 V 1.3.1 (2000-11) as German standard)
Edition 2001-05

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1); Signalling network layer for circuit-mode basic call control - Part 3: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 300403-3 V 1.4.1 (2001-05) as German Standard)
Edition 2002-11

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control - Part 6: Test Suite Structure and Test Purposes (TSS&TP) specification for the network (Endorsement of the English version EN 300403-6 V 1.2.2 (2000-02) as German Standard)
Edition 2002-12

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control - Part 7: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (Endorsement of the English version EN 300403-7 V 2.1.2 (2000-02) as German standard)
Edition 2000-12

Transmission and Multiplexing (TM) - Generic requirements for synchronization networks - Part 3-1: The control of jitter and wander within synchronization networks (Endorsement of the English Version EN 300462-3-1 V 1.1.1 (1998-05) as German Standard)
Edition 2000-07

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol, Circuit mode basic services, Network Layer (NL) - Part 1: Test Suite Structure and Test Purposes (TSS&TP) (Endorsement of the English version EN 300805-1 V 1.2.1 (2000-05) as German standard)
Edition 2001-06

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol, Circuit mode basic services, Network Layer (NL) - Part 2: Abstract Test Suite (ATS) (Endorsement of the English version EN 300805-2 V 1.2.1 (2000-05) as German standard)
Edition 2001-06

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Generic functional protocol for the support of supplementary services at the "b" service entry point for Virtual Private Network (VPN) applications - Part 1: Protocol specification (Endorsement of the English version EN 301061-1 V 1.2.2 (1998-04) as German standard)
Edition 2000-01

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Generic functional protocol for the support of supplementary services at the "b" service entry point for Virtual Private Network (VPN) applications - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (Endorsement of the English version EN 301061-2 V 1.1.3 (1998-10) as German standard)
Edition 2000-04

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Generic functional protocol for the support of supplementary services at the "b" service entry point for Virtual Private Network (VPN) applications - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the use (Endorsement of the English version EN 301061-3 V 1.1.3 (1998-10) as German standard)
Edition 2000-04