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How Telephones Work
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Telephones are one of the most important and useful modern inventions. Learn about telephone operation, creating a telephone network and tones and bandwidth.
How Telephone Country Codes Work
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Telephone country codes make it easy to call another country. Learn more about telephone country codes at HowStuffWorks.
How Hearing Impaired Telephones Work
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Hearing impaired people have a number of options to use telephone technology. Learn about hearing impaired telephones in this article at HowStuffWorks.
What do the yellow and black wires in a home telephone jack do?
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With all the different colored wires used in communications, what do the yellow and black wires in a home telephone jack do?
What is digital spread spectrum as used in cordless telephones?
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DSS technology has evolved into the technology of choice for the cordless phone. What is digital spread spectrum as used in cordless telephones?
Why is the keypad arrangement different for a telephone and a calculator?
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It's one of those seemingly-unexplainable lapses in logic -- Why do these two digit-based devices order their number keys in exactly opposite ways?
Will the U.S. Ever Run Out of Telephone Numbers?
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The list of usable phone numbers runs into the billions, but the number is not infinite. So, what happens if we run out?
Why Does the Phone Still Work When the Electricity Goes Out?
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The power goes out fairly often for most people, but your telephone, is always working. Learn why the phone works even when the electricity goes out.
How Prison Telecommunications Work
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Prison telecommunications is tricky business when there's a risk prisoners will use telephone calls to commit crimes. Learn about prison telecommunications.
How To Tell if Your Phone Is Tapped
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It's possible and relatively easy for someone to tap into your phone line or cell phone. With a few tips, it's also easy to tell if someone tapped your phone.