Openwave Systems Inc.

Peter Gerald McNiff

Michael Thomas Wilhoite

A telecommunications service node is connected to a data network using a packet data protocol and a telephone network using a circuit switched protocol. The service node is also connected to a wireless roaming network using the IS-41 signaling protocol. The service node stores status information, including location and registration information, for mobile computing devices connected to the data packet network. The location information includes a temporary data network address for visiting mobile computing devices. The service node manages voice calls to and from the mobile computing devices. If a call is received to a mobile computing device which is not registered, the service node will attempt to connect the call to a wireless telephone associated with the mobile computing device, or a predefined destination established as a preference by the user. In the case of a voice call between a telephone connected to the telephone network and a mobile computing device connected to the data network, the service node acts as a gateway and translates between the data packet protocol and the circuit switched protocol. A personal information manager executing in a mobile computing device may be used for managing call processing functions of the mobile computing device.

Data network computing device call processing

A system and method for registering and deregistering a mobile computing device with a service node, comprising sending a registration request message upon connection to a network, receiving a temporary IP address for the network, sending a registration notification message to the service node, wherein said registration request message includes the temporary IP address, receiving an acknowledgement message from the service node indicating that the mobile computing device is registered with the service node, monitoring an activity level of the mobile computing device to determine when the mobile computing device has been idle for a predetermined period of time, and sending a deregistration message to the service node to deregister with the service node when said mobile computing device has been idle for said predetermined period of time.

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Kirkland, WA, United States of America

Peter Gerald McNiff