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How Can I Convert dtmf card signal coming from teliphone/Mobile to keyboard output?

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Last Modified: 2013-12-21
How Can I Convert dtmf card signal coming from teliphone/Mobile to keyboard output?
actually i have to make one system in which a game will be played on big screen and maximum four user can connect to game using mobile phones and play the game. the signal which mobile generates is usually in dtmf formatt now in between i have to convert this signal into keyboard output so that game could be played and mobile keypad could be used as game controller.

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