blue box

electronic device used to illegally place free long-distance telephone calls

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About blue box

A blue box is an electronic device that produces tones used to generate the in-band signaling tones formerly used within the North American long-distance telephone network to send line status and called number information over voice circuits. During that period, charges for long-distance calling were commonplace and could be significant, depending on the time, duration and destination of the call. A blue box device allowed illicit users to circumvent these charges, placing long-distance calls that would be billed to another number or dismissed entirely by the telecom company's billing system as an incomplete call. A number of similar "color boxes" were also created to control other aspects of the phone network, a practice called "phreaking".

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blue box

electronic device used to illegally place free long-distance telephone calls

0members1here now

Ask Genius Site

Not who you're looking for? Others named blue box: album by Kate Ceberano · 2003 novel by Kate Orman · Japanese manga series · Taiki Inomata loves badminton, but he has a long way to go b

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About blue box

A blue box is an electronic device that produces tones used to generate the in-band signaling tones formerly used within the North American long-distance telephone network to send line status and called number information over voice circuits. During that period, charges for long-distance calling were commonplace and could be significant, depending on the time, duration and destination of the call. A blue box device allowed illicit users to circumvent these charges, placing long-distance calls that would be billed to another number or dismissed entirely by the telecom company's billing system as an incomplete call. A number of similar "color boxes" were also created to control other aspects of the phone network, a practice called "phreaking".

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Not who you're looking for? Others named blue box: album by Kate Ceberano · 2003 novel by Kate Orman · Japanese manga series · Taiki Inomata loves badminton, but he has a long way to go b