| Author |
Dialing frequencies?
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| Dan Bolser 2005-08-26, 5:48 pm |
| Hi, I am not sure if this is land line only or even UK-BT only, but
where can I get a list of the frequencies used to dial telephone numbers?
I want to try something like a MIDI hookup so I can dial using the sound
of a violin :)
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| Rich Elgin 2005-08-26, 11:48 pm |
| Dan
I did a quick GOOGLE search and found this link
http://en.wikipedia.org/wiki/DTMF
There is a chart of frequencies and also sound clips of each button.
Rich
"Dan Bolser" <dan.bolser@gmail.com> wrote in message
news:den7js$si4$1@ge
mini.csx.cam.ac.uk...
> Hi, I am not sure if this is land line only or even UK-BT only, but where
> can I get a list of the frequencies used to dial telephone numbers?
>
> I want to try something like a MIDI hookup so I can dial using the sound
> of a violin :)
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| Joseph 2005-08-26, 11:48 pm |
| On Fri, 26 Aug 2005 15:05:47 +0100, Dan Bolser <dan.bolser@gmail.com>
wrote:
>Hi, I am not sure if this is land line only or even UK-BT only, but
>where can I get a list of the frequencies used to dial telephone numbers?
>
>I want to try something like a MIDI hookup so I can dial using the sound
>of a violin :)
Look up: DTMF (dual tone multi frequency) in wikipedia.org or in
google. And good luck on having a single violin dial a phone. You
need at least two! :)
- -
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| Dan Bolser 2005-08-27, 5:48 pm |
| Joseph wrote:
> On Fri, 26 Aug 2005 15:05:47 +0100, Dan Bolser <dan.bolser@gmail.com>
> wrote:
>
>
>
>
> Look up: DTMF (dual tone multi frequency) in wikipedia.org or in
> google. And good luck on having a single violin dial a phone. You
> need at least two! :)
> - -
>
Hey hey! Thanks guys! This looks like an interesting project! Now...
Anyone want to buy my 'easy dial' / 'soothe sound' technology? ;)
Dan.
P.S. Regarding the 'robustness' of the system - I managed to get at
least some numbers down the line by whisling!
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| Thus spake Dan Bolser:
> P.S. Regarding the 'robustness' of the system - I managed to get at
> least some numbers down the line by whisling!
Not likely. DTMF means *dual* tone (2 tones simultaneously).
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.
DaveC
me@privacy.net
This is an invalid return address
Please reply in the news group
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| Dan Bolser 2005-08-31, 5:48 pm |
| DaveC wrote:
> Thus spake Dan Bolser:
>
>
>
>
> Not likely. DTMF means *dual* tone (2 tones simultaneously).
Perhaps I am a two tone whistler? I guess the sound I was making was
complex enough to confuse the 'other end', because I am sure I got off
the dial tone and managed to get a 'wrong number' message... I must try
again (it was years ago now)...
Dan.
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| Joseph 2005-09-01, 2:48 am |
| On Wed, 31 Aug 2005 17:08:43 +0100, Dan Bolser <dan.bolser@gmail.com>
wrote:
>Perhaps I am a two tone whistler? I guess the sound I was making was
>complex enough to confuse the 'other end', because I am sure I got off
>the dial tone and managed to get a 'wrong number' message... I must try
>again (it was years ago now)...
Years ago when the networks were different the frequency 2600 was used
to control the network and is the principal used in Blueboxen. There
was a phone phreak "Captain Crunch" who was notorious for the toll
fraud he managed over the network using a "Captain Crunch" whistle.
- -
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| Dan Bolser 2005-09-01, 5:48 pm |
| Joseph wrote:
> On Wed, 31 Aug 2005 17:08:43 +0100, Dan Bolser <dan.bolser@gmail.com>
> wrote:
>
>
>
>
> Years ago when the networks were different the frequency 2600 was used
> to control the network and is the principal used in Blueboxen. There
> was a phone phreak "Captain Crunch" who was notorious for the toll
> fraud he managed over the network using a "Captain Crunch" whistle.
>
> - -
>
Yeah, I read about that on Wiki (also years ago when my friend gave me a
copy of the Jolly Roger). Do any phreak 'free-phone' conferences still
go on?
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