Abstract: Network selection techniques for use in a mobile device which is configured for voice and packet data communications are described. The mobile device performs a scanning operation to identify one or more communication networks, and consults a network selection list for selecting, in accordance with assigned priorities of the list, one of the identified networks. The mobile device also determines whether a packet data service interconnection to a home network via the selected network is available. If the interconnection to the home network via the selected network is determined to be available, then the mobile device operates with voice and packet data services in the selected network. Otherwise, if the interconnection to the home network via the selected network is determined to be unavailable, then the mobile device repeats the acts of consulting and determining for the next identified network in the list.

Abstract: A mobile communication device is adapted to provide voice communications with use of a voice service and data communications with use of a data service. The mobile device maintains a preferred network list as well as a service access list in its memory. The preferred network list has a listing of a plurality of networks with assigned priorities for network selection. The service access list has a listing of a plurality of networks that make the data service available to the mobile device. The mobile device performs a scanning operation for identifying one or more communication networks available in a coverage area of the mobile device. When a home network of the mobile device is unavailable in the coverage area, the mobile device consults the preferred network list and the service access list for identifying one of the networks identified by the scanning operation.

Abstract: A mobile communication device is adapted to provide voice communications with use of a voice service and data communications with use of a data service. The mobile device maintains a preferred network list as well as a service access list in its memory. The preferred network list has a listing of a plurality of networks with assigned priorities for network selection. The service access list has a listing of a plurality of networks that make the data service available to the mobile device. The mobile device performs a scanning operation for identifying one or more communication networks available in a coverage area of the mobile device. When a home network of the mobile device is unavailable in the coverage area, the mobile device consults the preferred network list and the service access list for identifying one of the networks identified by the scanning operation.

Abstract: Methods and apparatus for selecting a cellular network to provide one or more communication services for a mobile communication device are disclosed. A scanning operation is performed by the mobile device to identify a plurality of cellular networks that support a voice communication service in a geographic coverage area. The mobile device then identifies which of the cellular networks makes a data communication service available to it. Advantageously, the mobile device assigns priority to or selects a cellular network that makes the data communication service available over a network that fails to make the data communication service available, and may register with that network. The data communication service may include, as examples, an e-mail communication service or an Internet access service. Preferably, the cellular network operates in accordance with GSM (Global System for Mobile) and GPRS (Generalized Packet Radio Service).

Abstract: Methods and apparatus for selecting a cellular network to provide one or more communication services for a mobile communication device are disclosed. A scanning operation is performed by the mobile device to identify a plurality of cellular networks that support a voice communication service in a geographic coverage area. The mobile device then identifies which of the cellular networks makes a data communication service available to it. Advantageously, the mobile device assigns priority to or selects a cellular network that makes the data communication service available over a network that fails to make the data communication service available, and may register with that network. The data communication service may include, as examples, an e-mail communication service or an Internet access service. Preferably, the cellular network operates in accordance with GSM (Global System for Mobile) and GPRS (Generalized Packet Radio Service).

Abstract: A system and method for managing connections between one or more local terminals and one or more remote systems over a packet-switched network is disclosed. The invention includes a gateway computer that forms a bridge between the local terminals and the one or more host systems, the gateway and the local terminals including computer software instructions for embedding and filtering special connection identification information in each transaction request. The local terminals embed connection identification information into each request packet requesting a connection to a remote host system, and the gateway filters this information and verifies that the gateway and local terminal(s) are synchronized. The gateway then manages the communication to the host system using the native protocol of the host, thereby minimizing communication over the packet-switched network.

Abstract: A method and system provides a special purpose or embedded system developer with the ability to confirm the correct operation of a computer program designed to operate on a target system whose processing and storage capabilities may be more austere than the host system upon which the computer program is designed and tested. A key feature of the method and the system enables a developer to execute and debug an application program on a host system while observing and testing the operation of the program through the input/output of the target system. Another feature of the method and system is an application loader that dynamically sizes and, as necessary, reconfigures the available memory to permit multiple applications to reside simultaneously on the target system by resolving addresses in the target system at the time an application of interest is downloaded to the target system.

Abstract: A method and system provides a special purpose or embedded system developer with the ability to confirm the correct operation of a computer program designed to operate on a target system whose processing and storage capabilities may be more austere than the host system upon which the computer program is designed and tested. A key feature of the method and the system enables a developer to execute and debug an application program on a host system while observing and testing the operation of the program through the input/output of the target system. Another feature of the method and system is an application loader that dynamically sizes and, as necessary, reconfigures the available memory to permit multiple applications to reside simultaneously on the target system by resolving addresses in the target system at the time an application of interest is downloaded to the target system.