Sending & receiving signals from a mobile phone i/o

Dear friends,
I am working on a project to send and retrieve data (electrical signals) to an external hardware circuit using a mobile phone.(My project doesn't use a computer, instead I use a mobile phone that is capable of supporting JVM.)
Can I use the USB(or any other output that can be used to send signals) port of the mobile? Is there an API to handle that?.(there is an API callled jsr-80 but I wasn't able to find that. I found only the specification)
How can I access the port? How can I use the wireless toolkit to do simulation? Please tell me how to program the USB output to send signals?
If u got any tutorials, white papers or any related web links please let me know.
CAn I use Bluetooth instead of USB without using a computer?
Thank You.
Note: I am working under windows platform.

umm i am trying to do the same thing... look into BREW
http://www.devx.com/wireless/Article/11932
but i unno i didn't get into that cause its expensive :S ... but take a look into it any ways :P
you could all wyas use filters and detect like dial tones... or if you have a collor phone change le back ground color and detect it with infreared (the color) or enven black and whit do like a barcode with a barcode reader?
oh if you have the mobile kit from your phone sniff the usb packets and try to pull the data

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Sending & receiving signals from a mobile phone i/o

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