Thanks guys, I checked verizonwireless but they won't work for me. I also checked globalstar.com, they look very promising, the qualcomm phone is way cheaper than the iridium motorola ($650 vs $1400) but the monthly plan is a bit more ($55/mo vs $30). I am contacting them both directly to get further info.

JustMe, I know they are expensive but for my specific needs there seems to be no other option.

cheers,
Luke