"The phone is a remarkably complex, simple device, and very rarely ever needs repairs, once you fix them." - Dan/Panther
Started by Dennis Markham, October 14, 2009, 09:28:51 PM
Quote from: Phonesrfun on October 14, 2009, 09:58:41 PMSpeaking of phone phreaks, who here knows about those "blue boxes"?-Bill
Quote from: Phonesrfun on October 14, 2009, 10:07:13 PMThere is more written on this than I can sumarize, but it has to do with the old way of in-band signaling using 2600 Hz and the predecessor to DTMF which was MF, or simply multifrequency signalling.Google terms like "phone phreaks" or "Evan Doorbell" or even "Blue Box".It was a way of hyjacking the phone system in the 60's and 70's to make free long distance calls.-Bill
Quote from: Dennis Markham on October 14, 2009, 09:28:51 PMBack in the mid 1960's when I was a kid growing up in northern Alabama it became common knowledge amongst school kids that the phone could be used to meet people in a strange way. If one dialed their own telephone number a busy signal would result. If one were to speak into the phone during the silence between the beeps of the busy signal, other people enjoying the rhythm of that signal could hear what the person said between beeps. Before long it spread like wildfire and the busy signal was a cacophony of shouts, asking "what-is-your-name?" or "what-is-your number?" Guys and girls were meeting, shouting phone numbers between the beeps. The final thing that would be said was "hang up" where the boy would call the girl or vice-versa.