| 摘要 |
A method for sending one or more telephone numbers between a first telephonic device and a second telephonic device while a telephone call is in progress comprises initiating a telephone call between a first telephonic device and a second telephonic device, entering a plurality of digits into a keypad of the first telephonic device to generate a plurality of dual-tone multi-frequency signals, measuring an elapsed time between the entry of each of the digits, comparing the elapsed time between the entry of each of the digits with a standard inter-digit time gap, determining a number of digit sequences entered based upon the comparison of the elapsed time between the entry of each of the digits and the standard inter-digit time gap, wherein the number of digit sequences entered corresponds with one or more telephone numbers, detecting the dual-tone multi-frequency signals with the digital signal processor of the second telephonic device, decoding the detected dual-tone multi-frequency signals with the digital signal processor in order determine the one or more telephone numbers typed into the keypad, storing the one or more decoded telephone numbers in the temporary memory of the second telephonic device, displaying the one or more telephone numbers on the display of the second telephonic device, terminating the telephone call between the first and second telephonic devices, accessing the one or more decoded telephone numbers stored in the temporary memory, and storing the one or more decoded telephone number in the non-volatile memory of the second telephonic device.
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