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001 Generating DTMF | Telecom Series
16:23
YouTubeCAXRAMEDIA
001 Generating DTMF | Telecom Series
Dual-tone multi-frequency signaling (DTMF) is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other communications devices and switching centers. DTMF was first developed in the Bell System in the United States, and became known under the trademark Touch-Tone for use in ...
4.2K viewsMar 17, 2021
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How DTMF Works: Understanding the Dual-Tone Multi-Frequency System #DTMF #gsm #diy
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