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Explain the difference between Rotary and Dual Tone Multi-frequency.
The major difference between Rotary and Dual Tone Multi-frequency(DTMF) is the method by which they are executed to the phone system. Rotary uses interrupted pulses to communicate the characters or digits on the rotary dial. Rotary systems were different depending on the country in which it was used having certain amounts of pulses to represent certain digits on the rotary dial. For example, in the United States, dialing a number five on a rotary dial set would open and close electrical contacts on the phone five times thus sending five pulses...
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