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The difference between rotary and dual tone multi-frequency telephones is that rotary send interrupted electrical pulses and the DTMF is a method of instructing a telephone switching system. The main difference between the two types is that rotary is analog and DTMF is digital. A rotary type phone also is a mechanical switch type that uses clicks rather then tones. It is very easy to distinguish which type is which just by the appearance of the phone. I rotary phone will have a dial that you manually rotate clockwise to dial the numbers and a DTMF type phone will have push buttons.
Wide Area Telecommunications Service or WATS is a line of service that is very similar to an 800 number...
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If You Were James Gorman, The New Head Of Global Wealth Management, What Information Systems Would You Invest In? Why? Do You Think Morgan Stanley’S Plans For An Integrated Client Information System Are Worthwhile?
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