Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurement on terrestrial radio relay-systems - Section 5: Digital signal processing sub-system (IEC 60835-2-5:1993); German version EN 60835-2-5:1995
Edition 1995-04

Integrated Services Digital Network (ISDN) - Three-party (3PTY) supplementary service - Digital Subscriber Signalling System No. 1 (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300188-1 V 1.2.4 (1998-06) as German standard)
Edition 2000-01

Integrated Services Digital Network (ISDN) - Call Hold (HOLD) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300141-1 V 1.2.4 (1998-06) as German standard)
Edition 2000-01

Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems - Section 9: Services channels (IEC 60835-2-9:1995); German version EN 60835-2-9:1995
Edition 1996-06

Digital cellular telecommunications system (Phase 2) - Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface (Endorsement of the English version ETS 300559:1996-09 as German standard)
Edition 2001-04

Digital audio tape recorder reel to reel system, using 6,3 mm magnetic tape, for professional use; part 2: format A (IEC 61120-2:1991); German version EN 61120-2:1993
Edition 1994-02

Methods of measurement for equipment used in digital microwave radio transmission systems - Part 3: Measurement on satellite earth stations; section 12: Overall system performance (IEC 60835-3-12:1993); German version EN 60835-3-12:1995
Edition 1995-04

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) - Generic functional protocol for the support of 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 300196-2 V 1.3.2 (2001-06) as German Standard)
Edition 2002-03

Integrated Services Digital Network (ISDN) - Security tools (SET) procedures; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user (Endorsement of the English version EN 301002-3 V 1.2.1 (2001-11) as German Standard)
Edition 2002-11