2600 Hz is a frequency in hertz (cycles per second) that was used by AT&T as a steady signal to mark currently unused long-distance telephone lines.
A blue box is an electronic device that generates the in-band signaling audio tones formerly used to control long-distance telephone exchanges.
Phreaking is a slang term coined to describe the activity of a culture of people who study, experiment with, or explore telecommunication systems, such as equipment and systems connected to public telephone networks. The term phreak is a sensational spelling of the word freak with the ph- from phone, and may also refer to the use of various audio frequencies to manipulate a phone system. Phreak, phreaker, or phone phreak are names used for and by individuals who participate in phreaking.
Radio FreeK America 1
02/20/02 - Trashing live, dual was "slammed," trouble with Qwest, Qwest releasing customer info then backing off, Rax discusses VOMIT and subsequent fun, start your own telco or isp, Onebox.com, Slingshot pre-paid Internet access, Kondor's Trios tribulations, fun with the phone, and more.