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Hi Shykhan, A WATTS Line is like an 800 number. These are generally no longer in use because of the nature of telecom today. These were widely used in the 60's through the 90's. Much of this has been replaced with WAN systems (Wide area...
http://en.allexperts.com/q/Geography-1729/newworking-4....
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No companies in this country should still be using rotary phones anymore. 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.
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www.oppapers.com/essays/Telecommunication-Systems/16561...
www.oppapers.com/essays/Telecommunication-Systems/165615
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Free Essays on Rotary And Dual Tone Multi Frequency for students. Use our papers to help you with yours 1 - 8. ... Ntc360 Course: NTC 360 Use short answers to explain the difference between: • Rotary and Dual Tone Multi-frequency (DTMF) • Wide Area Telecommunications Service (WATS) and le... Save Paper...
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www.oppapers.com/subjects/rotary-and-dual-tone-multi-fr...
www.oppapers.com/subjects/rotary-and-dual-tone-multi-frequency-page1.html
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What is the difference between Rotary and Dual Tone Multi-frequency (DTMF)? ... Explain the following types of Networks and Telecommunication principles - Use short answers to explain the difference between: 1. Synchronous and asynchronous 2. Analog and digital 3. XON and XOFF 4. Simplex and duplex 5.
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www.brainmass.com/homework-help/computer-science/networ...
www.brainmass.com/homework-help/computer-science/networks/79465
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What are the differences between Wide Area Telecommunications Service (WATS) and leased. ... What are the differences between Wide Area Telecommunications Service (WATS) and leased lines? ... Rotary and Dual Tone Multi-frequency (DTMF) - What is the difference between Rotary and Dual Tone Multi-frequency (DTMF)?
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www.brainmass.com/homework-help/computer-science/networ...
www.brainmass.com/homework-help/computer-science/networks/79466
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bandwidth - (1) The difference between the top and bottom limiting frequencies of a continuous frequency band. (2) Indicates the information-carrying capacity of a channel. Analog transmission usually expressed in kHz or MHz;
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www.itcom.itd.umich.edu/glossary.html
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The differences between Rotary and Dual Tone Multi-frequency (DTMF are with Rotary relates to rotation, part that rotates around and axis. Rotary are one of the oldest phones used since the 1920’s and they are still used by some. ... For every number dial around the rotary it turns on and off the switch at the phone company.
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www.radessays.com/viewpaper/12342/Love.html
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Old phones, with a rotary dial, generated sequences of on-off pulses. However, it was easy to fake the pulses and hack into the system. ... Electronic Touchtone phones generate DTMF tones which are sent to the telephone exchange as you press the keys.
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www.talking.co.uk/dtmf.htm
www.talking.co.uk/dtmf.htm
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The DTMF system uses eight different frequency signals transmitted in pairs to represent sixteen different numbers, ... No frequency is a multiple of another, the difference between any two frequencies does not equal any of the frequencies, and the sum of any two frequencies does not equal any of the frequencies. ... Rotary dial...
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www.absoluteastronomy.com/topics/Dual-tone_multi-freque...
www.absoluteastronomy.com/topics/Dual-tone_multi-frequency
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