| Subject | English | German |
| comp. | communication application | Übertragungstechnik-Anwendung |
| tech. | communication application | Kommunikationsanwendung |
| comp. | communication application | Nachrichtenverkehrsanwendung |
| commun. | Communication Application Specification CAS protocol | CAS-Kommunikationsprotokoll (G3 fax compatible PC communication, Intel) |