which phone service will it use?
The service will be any one that uses a sim card basically, and as long as your service supports the freqs of your particular card. I'll be sure to post links to that info eventually when this starts getting widely addopted.
The first modem I'm using is tri band useing 900 1800 and 1900 mhz, In america the service I'll be useing is at&t and it uses 850 and 1900mhz, so I won't get on the 850mhz band just the 1900mhz which will be slower but it will work.
I will make a list of hardware that works, how to edit drivers. For me there are hardware limitations to consider when buying a aircard, I'm learning alot of aircards that don't officially support the ability to use voice actually are able to. (there's a command you send to the card and it responds back with what it's able to do) Due to the nature of the technology voice and data are useally both technically supported. The voice service might be weak or shotty but there are ways to tweak this and over time these methods will be learnt and used for particular aircards.
Until you/we are getting a final pandora, it would be hard to to do the real work and use try-error to get a clean solution
As far as testing without the pandora, testing on windows first to make sure everything works as advertised and see what AT commands the software sends the card and when linux is able to talk to the card, use those same AT commands to dial out and establish voice or data connections.
The commands are not OS specific so this can be done on any platform, these are the same commands that cell phones send to the radios in them to talk to their respective network. These are industry standard commands and will work on every GSM/GPRS/EDGE network as far as I know. Agian as we get a bigger info dump on what networks use what commands the program will get updated and eventually use your networks commands if they are infact different.
Data command set
Voice command set
Good to hear with the "kit". I know someone who knows alot about technic and hopefully would assemble mine
As far as a kit goes for this in the forseeable future its just going to be a card with a piece of velcro on the top of the pandora with a 3 inch right angle usb extension cable I've measured all it out and used a nintendo ds as a dummy and it doesn't look half bad actually, I'll post some pics once i finally get it together (minus pandora of course)
When it comes to a custom module and an actual hadware kit that can be connected internally to the pandora, I'll give my input to what I think it should have as far as capabilities, chips, and who to go through. As far as designing it, I'm not the best guy for that job and there's much more skilled individuals out there for that. Maybe we can get together as a community and design a PCB that has radio gps and accelorometer.