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About: Blue box     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatPhreakingBoxes, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingyago:WikicatTelecommunicationsyago:Artifact100021939yago:Box102883344yago:Container103094503yago:Instrumentality103575240yago:Medium106254669yago:Object100002684yago:PhysicalEntity100001930deviceyago:Telecommunication106271778yago:Whole100003553yago:WikicatPhreakingBoxes New Facet based on Instances of this Class

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. This allowed the user, referred to as a "phreaker", to surreptitiously place long-distance calls that would be billed to another number or dismissed entirely as an incomplete call. A number of similar "color boxes" were also created to control other aspects of the phone network.