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Landline
The public telephone network has evolved over the decades from manually switched wires carrying analog-encoded voice to an electrically switched, computer-controlled grid of wires, fiber optics, and radio carrying digitally encoded voice and other data.
Owning a landline telephone switch is nothing new. It's just that not many people have the skills to do it anymore. And that's why The Don can charge top dollar for his services, often with repeat customers. Phone phreaking (that is, hacks and exploration of telephone systems) never really died, it has just been overshadowed by high-speed Internet connections and wireless networks. But if you look closely, it's still here.
Probably the most well-known exploits of phreaking were done by Kevin Poulsen in the mid-1980s. Kevin had access to many of California's Pacific Bell switches and routinely tapped lines and rerouted calls. And, there were the radio station contest grand prizes he won from KIIS-FM in Los Angeles, where famous DJ Rick Dees gave away Porsches to the 102nd caller during his morning show. Kevin used a clever trick that would guarantee his win every time.

  

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