Patent ID: 8437322

Claim:
A mobile communication device for communicating voice data, the mobile communication device comprising: a mobile encapsulator encapsulating a fixed internet protocol (IP) address based voice data packet containing a fixed source IP address of the mobile communication device, a fixed destination IP address of a receiving device, and a voice data payload into a sending network voice data packet containing a sending network source IP address of the mobile communication device, a sending network destination IP address of an intermediate system, and the fixed IP address based voice data packet; and a transmitter for providing the sending network voice data packet over a first dynamic IP address based network to the intermediate system for decapsulating the fixed IP address based voice data packet from the sending network voice data packet, encapsulating the fixed IP address based voice data packet into a receiving network voice data packet and providing the receiving network voice data packet over one of the first dynamic IP address based network and a second dynamic IP address based network to the receiving device.