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DTMF Decoding
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IY> Телефонную линию на микрофонный вход можно IY> пускать через резистор на 100 kОм. Вход звуковой карточки IY> можно защитить от 60 вольт сигнала вызова шунтирующими IY> диодами со стороны карточки.
А без транса разделительного возможна некоторая порча карточки - особенно во время грозы и пьяных электриков ;-)
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