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| English | Spanish |
| Microsoft text telephone | teléfono de texto de Microsoft (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) |
| plain old telephone service | servicio de telefonía convencional (Basic dial telephone connection to the public switched network, without any added features or functions. Until the 1970s, POTS was the only telephone service offered by local telecommunications providers) |
| public switched telephone network | Red telefónica conmutada (Public switched telephone network (PSTN) is used by standard analog telephone lines, available worldwide) |
| telephone device for the deaf | teléfono para personas con discapacidades auditivas (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 | teletipo (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 | Interfaz de usuario de teléfono (An interface that is used to navigate the menus of a Unified Messaging (UM) system using DTMF or touchtone inputs) |
| text telephone | teléfono de texto (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 | número de acceso telefónico de mensajería unificada (A telephone number that points to a hunt group and is the access number for calls that are routed to Unified Messaging servers) |