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What is the operating principle of coin box telephone?

Anonymous

∙ 15y ago

Updated: 11/4/2022

When you insert a coin into a public phone it generates a tone for each type of coin inserted. therefore cannot be cheated by penies or nickels for quarters. The proper tone feedback tell s the phone co. the correct amount inserted.

Wiki User

∙ 15y ago

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Q: What is the operating principle of coin box telephone?

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