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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…

History, Operation & Special codes

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Overview

History

Operation

Frequencies and timings

Special codes

Advanced semantic analysis

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Map overview Semantic statistics

Blue box

Nodes101
Edges100
Triples120
Avg. degree1.98
Density0.019802
Components1

How this topic connects Entity context

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Blue box

Top relations

related to External links · 40
Blue box → Archived January, Archived October, Bell System Technical Journal, Bell Telephone Magazine, Blue, Blue Boxing, Breen, Control, Dahlbom, Das Logbuch, Denis, Dick, Edward Oxford, Evrim, German, Hackerland, In-Band Single-Frequency Signaling, ISBN, It, Jane
related to Subculture · 15
Blue box → Al Bernay, Apple Computer, Captain Crunch, Famous, Henry Kissinger, Kissinger's German, Mark Bernay, On, Pope, Some, Steve Jobs, Steve Wozniak, The, Vatican City, Wozniak
related to In the media · 13
Blue box → All, Blue-boxing, Captain Crunch, Esquire, In June, Little Blue Box, October, Pacific Bell, Ramparts, Ron Rosenbaum, Secrets, Suddenly, The
related to References · 13
Blue box → Esquire, Little Blue Box, Lock-gray-alt-2, Lock-green, Lock-red-alt-2, NET, No, October, PDF, Ron, Rosenbaum, Secrets, Wikisource-logo
related to Countermeasures · 11
Blue box → After, Armed, At, Bell, Bell Telephone, Billing, Blue, For, In, When, While
related to Decline · 11
Blue box → Depending, Hz, It, Recall, Simply, T1, The, The T1, These, This, Thus
related to Blue boxing · 7
Blue box → However, Hz, The, To, Using, Usually, When
see also · 7
Blue box → Documentary, FalsingOperation Cybersnare, Hacking, Steve Wozniak, Story, Telephones, United StatesThe Secret History
is a · 1
Blue box → 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 an…

Important terminology Word statistics

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Important terminology

blue would tone system box telephone line tones call number hz long-distance used could phone network 2600 calls signaling using

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Blue boxis aelectronic 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 an…0.90text
Amigainstance ofand blue boxes were available for other platforms0.80text
directory assistanceinstance ofthis initial call would be to a 1-800 number or some other non-supervising telephone number0.80text
Blue boxrelated to Blue boxingThe0.60section
Blue boxrelated to Blue boxingTo0.60section
Blue boxrelated to Blue boxingUsually0.60section
Blue boxrelated to Blue boxingUsing0.60section
Blue boxrelated to Blue boxingWhen0.60section
Blue boxrelated to Blue boxingHz0.60section
Blue boxrelated to Blue boxingHowever0.60section
Blue boxrelated to CountermeasuresBlue0.60section
Blue boxrelated to CountermeasuresAt0.60section

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    Min side: 3
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