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Phones have come a long way since the old landline days. Our smartphones are light, fast, and have more computing power than NASA used to put a man on the moon.* Some advances came not by adding ...

Telephone dial tones are one aspect of modern life that we take for granted, but there is a history there. Wikipedia offers some interesting reading on the subject. Back in 1954 when Bell Telephone, ...

One late night many decades ago, I chanced upon a technical description of the Touch-Tone system. The book I was reading had an explanation of how each key on a telephone sends a combination of two ...