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Model 100 2600hz

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I have completed a 2600hz whistle for the TRS-80 model 100. It emits 2600hz and has a impressive binrev bbs ansii art.

IMG_1335.MOV

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Since you can't easily do MF, why not modify the code to pulse out 2600 when you push the digit keys, like the old pre-MF step tandems used?

 

Timing should be 66 milliseconds of 2600 Hz, followed by 34 milliseconds of silence for each pulse, with about 500 milliseconds between each digit:

 

Digit zero would be 10 sequences of 66ms/34ms 2600, with a 500ms pause before the next digit, for example.

 

You still need to define a key to play 2600 for about 1.5 seconds for trunk seizure.

 

You could also write the code to accept a number, then outpulse the entire number with the correct timings.

 

There is a number on CNET that this can be used to dial with.

 

This is essentially the method used by Cap'n Crunch and Joe Engressia to phreak step tandems or switches that accepted older SF trunks from step tandems. Routes that used this method of tone signalling were already pretty rare back in the late 60's and early 70s when they used this technique. You had to discover a number that routed through a step tandem from your dialing location, usually by trial and error. Vancouver, BC in Canada had one such switch.

 

D.

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Since you can't easily do MF, why not modify the code to pulse out 2600 when you push the digit keys, like the old pre-MF step tandems used?

 

Timing should be 66 milliseconds of 2600 Hz, followed by 34 milliseconds of silence for each pulse, with about 500 milliseconds between each digit:

 

Digit zero would be 10 sequences of 66ms/34ms 2600, with a 500ms pause before the next digit, for example.

 

You still need to define a key to play 2600 for about 1.5 seconds for trunk seizure.

 

You could also write the code to accept a number, then outpulse the entire number with the correct timings.

 

There is a number on CNET that this can be used to dial with.

 

This is essentially the method used by Cap'n Crunch and Joe Engressia to phreak step tandems or switches that accepted older SF trunks from step tandems. Routes that used this method of tone signalling were already pretty rare back in the late 60's and early 70s when they used this technique. You had to discover a number that routed through a step tandem from your dialing location, usually by trial and error. Vancouver, BC in Canada had one such switch.

 

D.

That seems very smart, I am going to attempt to do that. I am new to basic, so this will be a challenge.

Since you can't easily do MF, why not modify the code to pulse out 2600 when you push the digit keys, like the old pre-MF step tandems used?

 

Timing should be 66 milliseconds of 2600 Hz, followed by 34 milliseconds of silence for each pulse, with about 500 milliseconds between each digit:

 

Digit zero would be 10 sequences of 66ms/34ms 2600, with a 500ms pause before the next digit, for example.

 

You still need to define a key to play 2600 for about 1.5 seconds for trunk seizure.

 

You could also write the code to accept a number, then outpulse the entire number with the correct timings.

 

There is a number on CNET that this can be used to dial with.

 

This is essentially the method used by Cap'n Crunch and Joe Engressia to phreak step tandems or switches that accepted older SF trunks from step tandems. Routes that used this method of tone signalling were already pretty rare back in the late 60's and early 70s when they used this technique. You had to discover a number that routed through a step tandem from your dialing location, usually by trial and error. Vancouver, BC in Canada had one such switch.

 

D.

http://sourceforge.net/projects/virtualt/Here is an emulator for model 100/102/200 if you want to try it out. Thanks for the idea!

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