Yup.. This is the "vCard Bursting" concept.
One of the designs we're working on at the Homebrew Mobile Phone Club
includes a mobile phone where the audio path goes through the apps
processor so it can start sending data over the GSM voice channel.
There's a little more info on that at:
http://www.hbmobile.org/wiki/index.php?title=Data_over_GSM_Voice
vCard bursting is described at:
http://www.hbmobile.org/wiki/index.php?title=VCard_burst
Great minds think alike! One of my objectives for building my own
phone was so I could have control over the audio path so I could
implement something like this without having to sell the handset
vendors on the concept.
-Cheers
-Matt H.
On Mar 14, 2007, at 12:15 PM, Ole Tange wrote:
I am not sure if this idea is already described.
When you have a conversation with another OpenMoko user you may want
to transfer some data. It may be a business card or an URL or
something similar.
My idea is to have the smartphone send a synchronizing sound and then
do the data transfer. During the transfer the voice quality will be
degraded or completely missing. After the data transfer the call will
continue normally.
When the receiving smartphone gets the synchronizing sound it will
present to the recipient: "The caller want to transfer 'foo'. It will
take approx 20 seconds to transfer. Do you want to accept?"
The actual data transfer may be done with some modem technology or
simply DTMF-sounds.
/Ole
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