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|                            Red and Blue Box Tones                           |
| Written by                                                         The Pyro |
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<=-=*=----------------------------OVERVIEW-------------------------------=*=-=>
|     In this short section, I will attempt to list some tones that Ma Bell   |
| uses and what they are.                                                     |
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<=-=*=----BLUE BOX FREQUENCIES---=*=-=> <=-=*=----RED BOX FREQUENCIES----=*=-=>
| 2600 hz - Used to get on/off trunk  | |  Use 1700 hz and 2200 hz combined.  |
|                                     | |                                     |
|  Tone matrix to use after 2600 hz.  | | Dime: 66 ms on, 66 ms off, 66 ms on |
|  700:  1  :  2  :  4  :  7  :  11  :| |                                     |
|  900:  +  :  3  :  5  :  8  :  12  :| | Nickel: 66 ms on                    |
| 1100:  +  :  +  :  6  :  9  :  KP  :| |                                     |
| 1300:  +  :  +  :  +  :  10 :  KP2 :| | Quarter: 33 ms on, 33 ms off        |
| 1500:  +  :  +  :  +  :  +  :  ST  :| |          repeated five times        |
|      900  :1100 :1300 :1500 : 1700 :| |                                     |
|                                     | |         (ms = millisecond)          |
|     Use KP (1700+1100) to start a   | |                                     |
| call and ST (1500+1700) to stop.    | <=-=*=---------------------------=*=-=>
|                                     |
|      Use 2600 hz to disconnect.     |
|                                     |
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|     For those of you who don't know, a Red Box simulates money being put    |
| into a pay phone.  You must put in some money first, though (the operator   |
| can tell if money was put in, but as to how much was deposited, only the    |
| computer knows. (yeah for the computer!))                                   |
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|                            TASI Locking Frequency                           |
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|                                                                             |
|     TASI (Time Assignment Speech Interpolation) is used on sattelite trunks,|
| and basically allows more than one person to use a trunk at one time by     |
| putting them on while the other person isn't talking.  Of course, you never |
| hear the other person talking on your trunk.                                |
|                                                                             |
|     When you start to talk, however, the TASI controller has to find an open|
| trunk for you.  Because of this delay in finding a trunk, some of your      |
| speech is lost; this is called clipping.                                    |
|                                                                             |
|     If you were transmitting data over a trunk, clipping would really fuck  |
| up the data.  So, there is something called a TASI locking frequency which  |
| keeps the TASI from putting anyone else on your trunk or you on anyone      |
| else's trunk.  In any case, the frequency is 1850 hz, sent before the       |
| transmission).                                                              |
|                                                                             |
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