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Paper

DTMF (Dual Tone Multiple Frequency)

by hasd 2012. 3. 22.



  • ITU-T Recommendation Q.24 - Multifrequency push-button signal reception (PDF document)
  • http://www.ti.com/lit/an/slaae16/slaae16.pdf
  • http://www.ti.com/lit/an/snoa782/snoa782.pdf



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