Thanks for the reply. I think that device is a little bit different than what I was considering as it doesn't include VOIP.
Basically, what I am after is to be able to use the equivilent of a corporate phone network that links worldwide offices together via VOIP on top of the Internet (TCP/IP or UDP/IP). It is just a simplificaton of what can be done now with Autopatch and repeater linking. Call into a repeater, patch in, dial a number, the autopatch software would then decide which "office" (or repeater in this case) has a phone line that is local to that area and route the call through that repeater using VOIP.
It would require the repeater to have an internet connection in addition to a local phone line to work.
Using the Yaesu device, one could just get on the internet and run a VOIP device in the truck though.
Craig