Patent ID: 8121625

Claim:
A two-way communication system for enabling messages to be sent from a computer to a device, and for a reply message to be sent from the device to the computer, said system comprising: (a) means for sending an outgoing message including a reply address from a source computer to a destination device, (b) a plurality of regions, each region having associated therewith means for receiving a reply message from a destination device, said receiving means having multiple associated receiving addresses any one of which may be used as a reply address to which said destination device may send a reply message, (c) means for selecting one of said plurality of regions based on a location of said destination device and for selecting one of said multiple associated receiving addresses of said selected region as the reply address to which said destination device may send a reply message, and (d) means for forwarding a reply message received by said receiving means from said destination device to said source computer.