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775-2600 --
2600 for Northern Nevada
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About 775-2600
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2600 for Northern Nevada
2600 is the frequency in hertz (cycles per second) that AT&T formerly put as a steady signal on any long-distance telephone line that was not currently in use. Prior to widespread use of out-of-band signaling, AT&T used in-band signaling, meaning that signals about telephone connections were transmitted on the same line as the voice conversations. Since no signal at all on a line could indicate a pause in a voice conversation, some other way was needed for the phone company to know when a line was free for use. So AT&T put a steady 2600 hertz signal on all free lines. Knowing this, certain people developed a way to use a whistle or other device to generate a 2600 hertz tone on a line that was already in use, making it possible to call anywhere in the world on the line without anyone being charged.
To see the collection of prior postings to the list,
visit the 775-2600
Archives.
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Using 775-2600
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To post a message to all the list members, send email to
775-2600@dasbistro.com.
You can subscribe to the list, or change your existing
subscription, in the sections below.
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Subscribing to 775-2600
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Subscribe to 775-2600 by filling out the following
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775-2600 Subscribers
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