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Somebody in the thread at some point said:
| While stating it being unlikely, I have no dout that it can be done,
| given enough effort. But it requires a lot of work by somebody with
Alright, that's all I was saying too.
| lots of knowledge and
On Monday 14 April 2008 21:00:34 Harald Welte wrote:
On Sun, Apr 13, 2008 at 07:57:02PM -0500, Hans L wrote:
[...]
AFAIR, the DTMF key press is encoded and send over the Um (air)
interface to the BTS/BSC/MSC and then in the end converted into
actual audible sounds.
Please see Page 22 of
Hans L wrote:
This thread gave me an idea which I haven't seen discussed before,
though it's probably not useful for the situation the original poster
had in mind.
Although the transfer of audio data over cell phone audio is very
lossy, there is at least one standard, proven way of
On Sun, Apr 13, 2008 at 07:57:02PM -0500, Hans L wrote:
Although the transfer of audio data over cell phone audio is very
lossy, there is at least one standard, proven way of transferring data
by phone: DTMF(http://en.wikipedia.org/wiki/DTMF).
please note though, that if you send DTMF over
Just to give you a summary judgement:
Running any kind of voice-encoded data over a regular voice channel of a
GSM phone is _extremely_ unlikely to work.
There are a number of different codecs in use. Which codec is
determined by the network. There is echo cancellation at potentially
multiple
Harald Welte wrote:
Just to give you a summary judgement:
Running any kind of voice-encoded data over a regular voice channel of a
GSM phone is _extremely_ unlikely to work.
There are a number of different codecs in use. Which codec is
determined by the network. There is echo cancellation
Harald Welte wrote:
Just to give you a summary judgement:
Running any kind of voice-encoded data over a regular voice channel of a
GSM phone is _extremely_ unlikely to work.
There are a number of different codecs in use. Which codec is
determined by the network. There is echo cancellation at
On Mon, Apr 14, 2008 at 10:15:06PM +0200, Adrian-Ken Rueegsegger wrote:
Harald Welte wrote:
Just to give you a summary judgement:
Running any kind of voice-encoded data over a regular voice channel of a
GSM phone is _extremely_ unlikely to work.
There are a number of different codecs in
This thread gave me an idea which I haven't seen discussed before,
though it's probably not useful for the situation the original poster
had in mind.
Although the transfer of audio data over cell phone audio is very
lossy, there is at least one standard, proven way of transferring data
by phone:
Am Fr 11. April 2008 schrieb Stefan Misch:
Hi,
I just talked about this issue with a colleague who uses an HTC PDA with
windows
mobile. For the data connection he uses a dial-up connection as a modem. He
doesn't have a data plan but a flat fee for voice calls into land lines.
He says
That's not all, there are even more factors:
Mic - A/D converter - Codec (depends on net and quality: up to 5 different
codecs possible) - Radio - Air-Interface - Radio -Codec - Voice Quality
Enhancer (VQE - who knows what this will do with your data, maybe just
dropping it at all) - and the same
Hi,
I just talked about this issue with a colleague who uses an HTC PDA with windows
mobile. For the data connection he uses a dial-up connection as a modem. He
doesn't have a data plan but a flat fee for voice calls into land lines.
He says he gets about up to 4K/s which is not much of
Diego Fdez. Durán wrote:
snip
Can't you initiate a voice call between to FreeRunners and then use the
mic and mixer devs to modulate the data as sound?
Broadly yes.
The problem is:
A human making mobile - mobile call looks something like this.
1 microphone
2 analog-digital converter
3 GSM
On Tue, Apr 08, 2008 at 10:22:10AM -0400, Dan Staley wrote:
Does anyone know if it is legal (in the standard TOS) with providers
(such as ATnT) to send data over a normal phone call?
this is not possible, since regular voice calls for GSM are not
bit-transparent, i.e. the voice signal is coded
By applying some sort of modulation (fm? am? psm?) it should be
possible to transfere data over gsm, but on a much lower speed then
through the data channel.
On Thu, Apr 10, 2008 at 7:34 PM, Harald Welte [EMAIL PROTECTED] wrote:
On Tue, Apr 08, 2008 at 10:22:10AM -0400, Dan Staley wrote:
Does
Does anyone know if it is legal (in the standard TOS) with providers
(such as ATnT) to send data over a normal phone call?
I have plenty of cell minutes (not to mention free calls between certain
numbers...) but I dont want to pay for a data planso I figure if I
wanted to, I could just have
I don't know about specific cases, but I think that cell phone
companies are more concerned about people using VOIP over data over
gsm voice calls.
There was talk earlier about writing a fax program that uses incoming
calls to receive faxes, and that GSM couldn't transmit decent faxes
because of
On ti, 2008-04-08 at 10:22 -0400, Dan Staley wrote:
I have plenty of cell minutes (not to mention free calls between certain
numbers...) but I dont want to pay for a data planso I figure if I
wanted to, I could just have my phone call my computer and transfer data
over the line.
There has
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Somebody in the thread at some point said:
| On ti, 2008-04-08 at 10:22 -0400, Dan Staley wrote:
| I have plenty of cell minutes (not to mention free calls between certain
| numbers...) but I dont want to pay for a data planso I figure if I
|
On ti, 2008-04-08 at 16:02 +0100, Andy Green wrote:
I think you're right, but just a thought if you could issue ready-coded
GSM codec frames, you can put the data direct in there for 1KBytes/sec
Yeah, but you can't.
--
Mikko Rauhala [EMAIL PROTECTED]
University of Helsinki
Mikko Rauhala wrote:
On ti, 2008-04-08 at 10:22 -0400, Dan Staley wrote:
I have plenty of cell minutes (not to mention free calls between certain
numbers...) but I dont want to pay for a data planso I figure if I
wanted to, I could just have my phone call my computer and transfer data
over
Tilman Baumann wrote:
Maybe CSD is billed like a voice call. I never used it, but i don't
remember any special charges for that.
I dug deeper. Seems like this is true.
But this raises the question if the Neo can do CSD. Probably it does,
since the GSM module does not appear to be somehow
On ti, 2008-04-08 at 17:16 +0200, Tilman Baumann wrote:
Maybe CSD is billed like a voice call. I never used it, but i don't
remember any special charges for that.
Doubtful for the US drop your pants and bend over, please carriers'
minutes; I presume the original poster was in this situation
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Somebody in the thread at some point said:
| On ti, 2008-04-08 at 16:02 +0100, Andy Green wrote:
| I think you're right, but just a thought if you could issue ready-coded
| GSM codec frames, you can put the data direct in there for 1KBytes/sec
|
|
Mikko Rauhala wrote:
A quick glance finds mostly mentions of 1st gen analog mobiles having
been used with modems, and notably At the same time, the speech
oriented audio compression used in GSM actually meant that data rates
using a traditional modem connected to the phone would have been even
On Tue, April 8, 2008 18:02, Joe Pfeiffer wrote:
Andy Green writes:
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Somebody in the thread at some point said:
| On ti, 2008-04-08 at 16:02 +0100, Andy Green wrote:
| I think you're right, but just a thought if you could issue
ready-coded
| GSM
Diego Fdez. Durán writes:
On Tue, April 8, 2008 18:02, Joe Pfeiffer wrote:
Andy Green writes:
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Somebody in the thread at some point said:
| On ti, 2008-04-08 at 16:02 +0100, Andy Green wrote:
| I think you're right, but just a thought if you could
Am Di 8. April 2008 schrieb Tilman Baumann:
Tilman Baumann wrote:
Maybe CSD is billed like a voice call. I never used it, but i don't
remember any special charges for that.
I dug deeper. Seems like this is true.
But this raises the question if the Neo can do CSD. Probably it does,
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Somebody in the thread at some point said:
| Diego Fdez. Durán writes:
| On Tue, April 8, 2008 18:02, Joe Pfeiffer wrote:
| Andy Green writes:
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|
| Somebody in the thread at some point said:
| | On ti,
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