- Dialogue units (ISO 22.21.09)
- Manufacturer: Manufacturer unknown; see the original database for national suppliers
- Insert date: 15/12/2015
- Latest update: 13/05/2020
- Source database: ATAust (AU)
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.