Patent ID: 8688111

Claim:
An apparatus comprising: a first distributed mobile architecture (DMA) system comprising: a processor; a computer-readable storage device storing instructions that, when executed by the processor, cause the processor to perform operations comprising: receiving registration information associated with a mobile subscriber while the mobile subscriber is located within a coverage area associated with a second DMA system of a DMA network; receiving a location update request, wherein the location update request is related to the mobile subscriber and is sent from a third DMA system of the DMA network; sending a second location update request to the second DMA system in response to receiving the location update request from the third DMA system; receiving a destination internet protocol (IP) address associated with the mobile subscriber from the second DMA system; and sending the destination IP address associated with the mobile subscriber to the third DMA system, wherein the third DMA system is configured to place a call to the second DMA system via a peer-to-peer IP connection based on a source IP address associated with the third DMA system and the destination IP address associated with the mobile subscriber.