Abstract: Methods and systems are provided for secure Mobile-IP traffic traversing network address translation (NAT). A virtual-private-network (VPN) tunnel extending between the mobile node and the home agent is established, wherein the home agent comprises a VPN function. Establishing the VPN tunnel comprises (i) the mobile node communicating with the home agent at a public address of the home agent via a private network, a NAT device, and a public network and (ii) the home agent assigning the mobile node a first public address. The mobile node is registered with the home agent. Registering the mobile node comprises (i) the mobile node communicating via the VPN tunnel with the home agent at the public address of the home agent and (ii) establishing the first public address as a home address for the mobile node for, for example, purposes of Mobile-IP communication.

Abstract: Methods and systems are provided for encapsulating upper layers of CDMA signaling messages between a multi-mode device and a signaling gateway. In an exemplary embodiment, a multi-mode device has a CDMA mode and a Wi-Fi mode. In Wi-Fi mode, the device generates an upper-layer portion of a CDMA signaling message. The device then encapsulates the first upper-layer portion in at least one packet-switched-protocol, such as SIP. The device then transmits the encapsulated upper-layer portion of the CDMA signaling message via a Wi-Fi network and a packet-switched network to a signaling gateway, which then translates the upper-layer portion into an SS7 message, and transmits the SS7 message over an SS7 network.

Abstract: A call system comprising an interface system configured to receive a call request, and a processing system coupled to the interface system and configured operate in a current mode of a plurality of modes, to determine if the call is for an emergency service while in the current mode, if the call is for the emergency service determine a preferred mode for the call from a one of the plurality of modes, and initiate the call in the preferred mode.

Abstract: Methods and systems are provided for encapsulating upper layers of CDMA signaling messages between a multi-mode device and a signaling gateway. In an exemplary embodiment, a multi-mode device has a CDMA mode and a Wi-Fi mode. In Wi-Fi mode, the device generates an upper-layer portion of a CDMA signaling message. The device then encapsulates the first upper-layer portion in at least one packet-switched-protocol, such as SIP. The device then transmits the encapsulated upper-layer portion of the CDMA signaling message via a Wi-Fi network and a packet-switched network to a signaling gateway, which then translates the upper-layer portion into an SS7 message, and transmits the SS7 message over an SS7 network.

Abstract: Methods and systems are provided for encapsulating upper layers of CDMA signaling messages between a multi-mode device and a signaling gateway. In an exemplary embodiment, a multi-mode device has a CDMA mode and a Wi-Fi mode. In Wi-Fi mode, the device generates an upper-layer portion of a CDMA signaling message. The device then encapsulates the first upper-layer portion in at least one packet-switched-protocol, such as SIP. The device then transmits the encapsulated upper-layer portion of the CDMA signaling message via a Wi-Fi network and a packet-switched network to a signaling gateway, which then translates the upper-layer portion into an SS7 message, and transmits the SS7 message over an SS7 network.

Abstract: A communication network for emergency service call handling, the communication network comprising a mobile switching center (MSC) configured to receive an emergency call from a wireless end device and transmit first call signaling indicating a call key for the emergency call and a public safety answering point (PSAP) for the call, and a gateway system configured to receive the first call signaling, process the first call signaling to generate second call signaling indicating the call key and the PSAP, transmit the second call signaling to a routing system, and connect the emergency call from the MSC to the routing system.

Abstract: A communication system comprising an access system configured to provide a plurality of end devices with access to a packet communication network, a first end device of the plurality of end devices configured to transmit a first query to the access system, receive a first response indicating a first identifier for the access system, transmit a registration message indicating the first identifier and a second identifier for the first end device, and transmit a first call request for a call wherein the first call request indicates the second identifier, and a call processing system in communication with the first end device and configured to receive the registration message, store the first identifier in association with the second identifier, receive the first call request, process the second identifier to determine the first identifier stored in association with the second identifier, and transmit a second call request indicating the first identifier.

Abstract: Methods and multi-mode devices are provided for temporarily overriding a preferred roaming list (PRL) in a multi-mode device, in favor of a wireless local area network (WLAN) access point. A triggering event is detected. In response to detecting the triggering event: (i) a first connection with a first WLAN access point is established; (ii) the multi-mode device is authenticated with the first access point; (iii) access data corresponding to the first access point is stored; and (iv) the PRL is deactivated for a discrete time period, such that, during the time period, the device does not use the PRL to seek to establish a second connection with any communication system. After the time period, the PRL is automatically reactivated.

Abstract: An emergency information system comprises an interface and a processing system. The interface is configured to receive first call signaling for an emergency call from a call processing system wherein the first call signaling indicates a call back number. The processing system is configured to process the first call signaling to determine a destination for the emergency call, generate second call signaling indicating a key and the destination, and generate a database message indicating the key and the call back number. The interface is further configured to transfer the second call signaling to the call processing system and transfer the database message to a database system.

Abstract: A method and apparatus are disclosed for dynamically selecting a complete or referenced group indication when initiating a group communication session in a communication system. A client device may include logic through which the device will decide, at the time of group session initiation, whether to initiate the session by reference to a complete group listing or rather whether to initiate the session by reference to a group identifier (e.g., group-ID). The client device may be capable of maintaining group data in order to indicate whether the client device and a communication server have agreed on a group-ID to correspond with a particular group. When a user directs the client device to initiate a session with a particular group, the client device will initiate the session by reference to the group-ID if the client device and communication server have agreed on a group-ID to correspond to the particular group.

Abstract: Methods and systems are provided for secure Mobile-IP traffic traversing network address translation (NAT). A virtual-private-network (VPN) tunnel extending between the mobile node and the home agent is established, wherein the home agent comprises a VPN function. Establishing the VPN tunnel comprises (i) the mobile node communicating with the home agent at a public address of the home agent via a private network, a NAT device, and a public network and (ii) the home agent assigning the mobile node a first public address. The mobile node is registered with the home agent. Registering the mobile node comprises (i) the mobile node communicating via the VPN tunnel with the home agent at the public address of the home agent and (ii) establishing the first public address as a home address for the mobile node for, for example, purposes of Mobile-IP communication.

Abstract: Methods and systems are provided for automatic over-the-air updating of a preferred roaming list (PRL) in a multi-mode device, based on an account association between the device and a wireless local area network (WLAN) access point. For each of a plurality of subscriber accounts, a set of subscriber account data is maintained in data storage, indicating an association between the subscriber account and one or more telecommunication devices. A determination is made that a given subscriber account is associated with both (i) a multi-mode device and (ii) a WLAN access point. In response to the determination, a PRL for the multi-mode device is automatically updated to include access data for the WLAN access point.

Abstract: A method for a WLAN access point to allocate telephone numbers for use by mobile stations. The access point includes stored data indicating one or more allowed telephone numbers. When a mobile station associated with the access point and acquires an IP address, the mobiles station sends a telephone number allocation-request to the access point, seeking allocation of a particular telephone number for use by the mobile station. If the telephone requested number is one of those allowed, then the access point associates the telephone number with the mobile station. On the other hand, if the requested telephone number is not one of those allowed, then the access point provides the mobile station with a list of the available telephone numbers, to allow a user to select a desired telephone number, and the mobile station may then send a new telephone number allocation-request, seeking allocation of the selected telephone number.

Abstract: Methods and systems are provided for encapsulating upper layers of CDMA signaling messages between a multi-mode device and a signaling gateway. In an exemplary embodiment, a multi-mode device has a CDMA mode and a Wi-Fi mode. In Wi-Fi mode, the device generates an upper-layer portion of a CDMA signaling message. The device then encapsulates the first upper-layer portion in at least one packet-switched-protocol, such as SIP. The device then transmits the encapsulated upper-layer portion of the CDMA signaling message via a Wi-Fi network and a packet-switched network to a signaling gateway, which then translates the upper-layer portion into an SS7 message, and transmits the SS7 message over an SS7 network.

Abstract: A method for a WLAN access point to allocate telephone numbers for use by mobile stations. The access point includes stored data indicating one or more allowed telephone numbers. When a mobile station associated with the access point and acquires an IP address, the mobiles station sends a telephone number allocation-request to the access point, seeking allocation of a particular telephone number for use by the mobile station. If the telephone requested number is one of those allowed, then the access point associates the telephone number with the mobile station. On the other hand, if the requested telephone number is not one of those allowed, then the access point provides the mobile station with a list of the available telephone numbers, to allow a user to select a desired telephone number, and the mobile station may then send a new telephone number allocation-request, seeking allocation of the selected telephone number.