File : PHONEFREQ.TXT Author : Iceman BBS : The Banana Republic BBS 10/04/89 The Good Oil on NZ (CCITT) Phone Tones ====================================== These are *not* touch-tone tones; they are used by Telecom *internally* for signalling between exchanges. They used to be used to get pulse dial to work long-distance, viz: Pulse +----------+ Tones +----------+ To rec. dial ----->| Exchange |--------------------->| Exchange |----> phone. +----------+ +----------+ Frequencies are: Digit: Hz: -> CCITT Numerical code. ====================== 1 700 + 900 2 700 + 1100 3 900 + 1100 4 700 + 1300 5 900 + 1300 6 1100 + 1300 7 700 + 1500 8 900 + 1500 9 1100 + 1500 0 1300 + 1500 Code 11 700 + 1700 \ For inward Code 12 900 + 1700 / operators KP 1100 + 1700 Prime (Start of pulsing) KP2 1300 + 1700 Transit Traffic (?) ST 1500 + 1700 Start (End of pulsing) These are (supposedly) used for international && trunkline signalling. This is how operator-assisted long-distance calls work: - Call operator pulse dial. - Operator hits [KP] (signals start of dialling) dials wanted number hits [ST] (ringing occurs) NB: The connection is made once the number is dialed, but ringing does not occur until [ST] is hit. This is how the guy in Wellington reckons you call long-dist: - Call an 0800 number. - Hit [KP] - Dial wanted number. - Hit [ST] To Telecom it looks as though the call goes to the free number. Notes: - This will only work with calls to other exchangesas it uses the CCITT frequencies. - It should be possible to make a cheap exchange-to-exchange call, eg Auckland to HBC, then dial out to wherever. - You can also do this with subscribers (ie the Auckland ->Hamilton mentioned above). The only thing is that the 'intermediates' phone will be dead while you are abusing it, but if you call a business no. at night it's OK. It will just look like a long call to a business in Hamilton at 34c/minute. - Don't do this to ordinary people - get businesses/govt agencies etc, people that can afford to pay (like stockbrokers etc). Source for tech. details: The Telecom Library in Wellington. ------------------------------------------------------------------------------- AUTHOR: Iceman ------------------------------------------------------------------------------- Brought to the WORLD by The Banana Republic BBS, Auckland, New Zealand. -------------------------------------------------------------------------------