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by 462436347
818 days ago
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> FYI - 2600 Hz is a common handshake tone used in telco. Was a common supervision tone used by the NA toll network prior to the introduction of SS7. Also practically everyone here knows (or ought to) that already, given that Jobs and Woz dabbled in making Blue Boxes for profit, and Blue Boxes produced 2600hz (along with the set of MF tones used to encode numbers). The fact you posted your redundant FYI with a mobile wikipedia link (phoneposting) is even more egregious. |
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