Joe Engressia - RIP

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People who remember the phone phreaking scene of the 1980's will no doubt be saddened to hear of the passing of Joe Engressia, who used the name Joybubbles toward the end of his life. Engressia, who was blind since birth, was famous for his sense of perfect pitch that let him whistle a 2600 Hz tone that was used to denote a usable telephony trunk during the days before electronic telephony switching. Playing this tone into a phone line at the time would allow someone with a blue box to manipulate the telephone switching network manually. Engressia was also known …

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