Optical fibre cables - Part 2-11: Indoor cables - Detailed specification for simplex and duplex cables for use in premises cabling (IEC 60794-2-11:2019 + A1:2020); German version EN IEC 60794-2-11:2019 + A1:2021
Edition 2022-09

Optical fibre cables - Part 2-31: Indoor cables - Detailed specification for optical fibre ribbon cables for use in premises cabling (IEC 60794-2-31:2019 + A1:2020); German version EN IEC 60794-2-31:2019 + A1:2021
Edition 2022-09

Achieving Customer Delight Through Service Excellence
Edition 2011-07

Optical fibre cables - Part 2-21: Indoor cables - Detailed specification for multi-fibre optical distribution cables for use in premises cabling (IEC 60794-2-21:2019 + A1:2020); German version EN IEC 60794-2-21:2019 + A1:2021
Edition 2022-09

Customer contact centres - Part 1: Requirements for customer contact centres (ISO 18295-1:2017); German version EN ISO 18295-1:2017
Edition 2017-10

Service excellence - Creating outstanding customer experiences through service excellence
Edition 2016-03

Customer contact centres - Part 2: Requirements for clients using the services of customer contact centres (ISO 18295-2:2017); German version EN ISO 18295-2:2017
Edition 2017-10

Quality management - Customer satisfaction - Guidelines for monitoring and measuring (ISO 10004:2018)
Edition 2019-07

Quality management - Customer satisfaction - Guidelines for complaints handling in organizations (ISO 10002:2018)
Edition 2019-07

Service Excellence - Principles and model (ISO 23592:2021); Text in German and English
Edition 2025-03