| 摘要 |
To enable hearing or speech impaired persons to transmit text over a mobile communications device, the invention provides for a mobile communication device with a text input means and an integrated cellular text modem (CTM) that has (i) a transmitter for converting input text data into CTM signals transmittable over a speech channel of a mobile communication network; and (ii) a receiver to convert received CTM signals into received text and display such received text on a display means integrated into the mobile communications device.
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