DEX Data from Vending Machines

Hi all,

I'll be the first to admit I am new to this. I've been assigned to figure out a way to extract DEX data remotely from vending machines and send it out via an external cellular modem. Does anyone know if this has been accomplished with the Arduino or if the Arduino would be required to accomplish this? The cellular modem we have can be connected to the DEX data port via serial connection and encapsulate the serial data to transfer over the internet but the problem here is that I cannot figure out how to actually extract the data or if we need a proprietary application to accomplish this. Currently they use a proprietary application on a handheld directly connected to the machine to retrieve this data.

Any help would be appreciated, kind of a neat project as if I figure this part out I'd like to mesh the machines together.

Anyway, I'm looking to get my hands on some of these components.

Thanks again for any help!