This article is presented as a news item only. It is not to be taken as an encouragement to make fraudulent telephone calls.
Red boxing consists of simulating the tones produced when coins are deposited in a pay phone. Coin tones are beeps of 2200 Hz + 1700 Hz as follows:
5 cents - 1 beep, 66 milliseconds duration.
10 cents - 2 beeps, each 66 milliseconds duration with 66 millisecond pause between beeps.
25 cents - 5 beeps, each 33 milliseconds duration with a 33 millisecond pause between beeps.
Two methods have commonly been used by phone phreaks to produce these tones and make free calls.
Please note these whistles are available (for test purposes only) from P-80 $35 send orders to P-80 3310 5th Avenue Charleston, WV. 25312
About :COMPUTERWORLD AD. From :MARK HAMILL To :ALL Date :10/15/84
(NOTE, THIS IS A REAL AD. TRY IT!) FROM A COMPUTERWORLD AD: DEAR HACKERS: ...WE AT MICROFRAME HAVE DEVELOPED A DEVICE TO KEEP YOU OUT ...CALLED DATA LOCK AND KEY...OUR OWN COMPUTER IS PROTECTED BY A DATA LOCK. WE INVITE YOU TO DIAL IN (xxx-xxx-xxxx). YOU WILL BE ANSWERED BY A 1200 BAUD MODEM. THE DATA WE GATHER FROM YOUR EFFORTS WILL HELP US...FOR CLUES CALL OUR VOICE LINE (xxx-xxx-xxxx) AND ASK FOR DATA SECURITY. (MICROFRAME, 205 LIVINGSTON AVE., NEW BRUNSWICK, NJ 08901) CAN YOU BEAT THAT!?!?!?!?!?!?!?!?! A COMPANY ASKING FOR US TO TRY AND BREAK IN? WELL, FOR ALL YOU PEOPLE WITH 1200 BAUD MODEMS 'GO FOR IT' THIS HAS BEEN A PUBLIC SERVICE POSTING BY MARK HAMILL.