Cellular telephone with text telephone functionality and method thereof

摘要

A radio communication device (102) provides for full TTY functionality by providing TTY capture (526) and TTY mapping (528) that allows the communication device (102) to transmit and receive TTY data. An external keyboard (108) provides for additional ease of use in TTY character entry. A method is also provided for the communication device (102) to transmit and receive TTY data. Optionally, a keyboard detection circuit can detect if the external keyboard (108) is connected to the radio communication device (108) and if so, transmit any TTY data that has been entered, or alternatively if no keyboard is connected, send the TTY data to a connector (510) so that the data can be sent to an external TTY.