- Dialogue units (ISO 22.21.09)
- Manufacturer: Manufacturer unknown; see the original database for national suppliers
- Insert date: 22/10/2018
- Latest update: 23/08/2021
- Source database: Vlibank (BE)
Based on expert resources provided by the following Organisations:
Also with the help of the EASTIN Associate Partners and National Contact Organizations from many countries across the world.