Is the LAN port on your laptop connected to the WAN port on your router, or the LAN port on your router? Are you using a crossover cable?
What's the full output of "ipconfig/all" look like on your laptop.[Since your VOIP data is already compressed, your attempt to use the satellite modem 'accelleration' software with it, and to use a VOIP connection over a satellite data connection may never be successful. It's not just about the latency, it's the real bandwidth you get before they play all their games with the "accelerator" software that tries to trick you into thinking you've got a high-speed connection. Way more info than you could ever want on the satellite data newgroups...]