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Cool telephony trivia - why telephones use negative 48v

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Caution: Web Randomness Alert!

Stumbling around the web for something else, I found a little piece of telephony trivia - Why Telephones Use Negative Forty-Eight Volts DC.

This entry was posted on Saturday, August 26th, 2006 at 7:22 pm and is filed under randomness, technology, telecom. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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