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Write a short note on Dual Tone Multi-Frequency Signal Detection.
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written 7.2 years ago by
teamques10
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• Dual Tone Multi-Frequency or DTMF is a method for instructing a telephone switching system of the telephone number to be dialed, or to issue commands to switching systems or related telephony equipment.
• The DTMF dialing system follow the technique proposed by AT&T in the 1950s called MF (Multi-Frequency) …
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