| Subject | English | German |
| IT | voice frequency interface | Sprachfrequenzinterface |
| IT | voice frequency interface | Analoginterface |
| IT | voice frequency interface 4-wire | analoge Vierdraht-Schnittstelle |
| IT | voice frequency interface 4-wire | Tonfrequenz-Vierdraht-Schnittstelle |
| comp., MS | Voice User Interface | Benutzerschnittstelle für Spracheingabe (An interface that is used to navigate the menus of a Unified Messaging (UM) system using speech inputs) |
| IT | voice/fax interface board | Schnittstellenkarte für die Sprach-und Telefaxübermittlung |