Customer Notification Standard for Product/Process Changes by Electronic Product Suppliers
Edition 2016-07-01

Telecommunications Management Network (TMN) - Functional specification of Customer Administration (CA) on the Operations System/Network Element (OS/NE) interface - Part 1: Single line configurations
Edition 1999-04-01

Telecommunications Management Network (TMN) - Functional specification of Customer Administration (CA) on the Operations System/Network Element (OS/NE) interface - Part 2: Multi line configurations (incl. Diskette!!!)
Edition 2002-05-01

Environmental Engineering (EE) - Measurement method for energy consumption of Customer Premises Equipment (CPE) (ETSI EN 301575 V1.1.1 (2012-05))
Edition 2012-08-01

Access, Terminals, Transmission and Multiplexing (ATTM); Broadband Deployment and Lifecycle Resource Management; - Part 5: Customer network infrastructures; Sub-part 1: Homes (single-tenant) (ETSI EN 305 174-5-1 V1.3.1 (2018-07))
Edition 2018-09-01

Quality management - Customer satisfaction - Guidelines for codes of conduct for organizations
Edition 2022-06-28

BS EN IEC 63402-1. Energy Efficiency Systems. Smart Grid. Customer Energy Management Systems. General Requirements and Architecture
Edition 2023-03-29

BS EN IEC 63402-2-2 Energy efficiency systems - Smart grid - Customer energy management systems - Interface between the home/building CEM and resource manager(s) - Data model and messaging
Edition 2024-03-15

Quality management. Customer satisfaction. Guidelines for codes of conduct for organizations
Edition 2018-07-20

Quality management. Customer satisfaction. Guidelines for complaints handling in organizations
Edition 2018-07-18