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| English | German |
| public switched telephone network | Telefonfestnetz, Public Switched Telephone Network (Public switched telephone network (PSTN) is used by standard analog telephone lines, available worldwide) |
| telephone device for the deaf | Gehörlosentelefon (A device that enables the transmission of typed messages over phone lines. These devices typically include keyboards for typing messages to send and display and/or printers to receive messages from one device to another) |
| telephone typewriter device | Schreibtelefon (A device that enables the transmission of typed messages over phone lines. These devices typically include keyboards for typing messages to send and display and/or printers to receive messages from one device to another) |
| Telephone User Interface | Benutzerschnittstelle für Telefoneingabe (An interface that is used to navigate the menus of a Unified Messaging (UM) system using DTMF or touchtone inputs) |
| text telephone | Schreibtelefon (A device that enables the transmission of typed messages over phone lines. These devices typically include keyboards for typing messages to send and display and/or printers to receive messages from one device to another) |
| UM access telephone number | Telefonnummer für den UM-Zugriff (A telephone number that points to a hunt group and is the access number for calls that are routed to Unified Messaging servers) |