| Subject | English | German |
| commun. | asynchronous dial-up data link via telephone network | Datex-P20-Wählanschluß (DBT X.28 300-1200 kbit/s) |
| commun. | asynchronous dial-up data link via tieline | Datex-P20-Hauptanschluß (DBT, 300-1200 kbit/s) |
| el.gen. | asynchronous link | asynchrone Verbindung |