Integrated Services Digital Network (ISDN) - Call Waiting (CW) supplementary service - Service description; English version ETS 300056:1991/A1:1996
Edition 1997-10

Electrical measuring instruments - X-Y recorders (IEC 61028:1991/A1:1995); German version EN 61028:1993/A1:1995
Edition 1996-06

Integrated Services Digital Network (ISDN) - Attachment requirements for terminal equipment to connect to an ISDN using ISDN basic access - Layer 3 aspects; English version ETS 300104:1991/A1:1994
Edition 1994-11

Self-ballasted lamps for general lighting services - Performance requirements (IEC 60969:1988 + A1:1991 + A2:2000); German version EN 60969:1993 + A1:1993 + Corrigendum 1993 + A2:2000
Edition 2001-06

Test methods for the determination of bond strength of impregnating agents to an enamelled wire substrate (IEC 61033:1991 + A1:2006); German version EN 61033:2006
Edition 2007-11

Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989 + A1:1999 + A2:2013); German version EN 60529:1991 + A1:2000 + A2:2013
Edition 2014-09

Audio, video and audiovisual systems; domestic digital bus (D2B) (IEC 61030:1991 + A1:1993); German version EN 61030:1993
Edition 1993-12

Sound system equipment - Part 2: Explanation of general terms and calculation methods (IEC 60268-2:1987 + A1:1991); German version HD 483.2 S2:1993
Edition 1994-08

Classification of environmental conditions; part 3: classification of groups of environmental parameters and their severities; ship environment (IEC 60721-3-6:1987 + A1:1991); German version EN 60721-3-6:1993
Edition 1994-06

Sound system equipment - Part 12: Application of connectors for broadcast and similar use (IEC 60268-12:1987 + A1:1991 + A2:1994); German version EN 60268-12:1995 + A2:1995
Edition 1995-06