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Red and Blue box tones
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<=-=*=-------------------------------------------------------------------=*=-=>
| Red and Blue Box Tones |
| Written by The Pyro |
<=-=*=-------------------------------------------------------------------=*=-=>
<=-=*=----------------------------OVERVIEW-------------------------------=*=-=>
| In this short section, I will attempt to list some tones that Ma Bell |
| uses and what they are. |
<=-=*=-------------------------------------------------------------------=*=-=>
<=-=*=----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. |
| |
<=-=*=---------------------------=*=-=>
<=-=*=-------------------------------------------------------------------=*=-=>
| 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!)) |
<=-=*=-------------------------------------------------------------------=*=-=>
<=-=*=-------------------------------------------------------------------=*=-=>
| TASI Locking Frequency |
<=-=*=-------------------------------------------------------------------=*=-=>
| |
| 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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