Abstract: Systems, products, and methods are disclosed for preregistering with a second network a mobile device that is currently being serviced by a first network that utilizes a different wireless-communications technology than the second network. An embodiment of the method includes facilitating wireless communications with a plurality of wireless devices by way of one or more base stations that form a portion of the second network, which utilizes a first type of wireless technology; and receiving by way of a portion of the internet, and not through any of the one or more base stations, a preregistration request that was sent through the first network and that is associated with the mobile device, which is currently being serviced by the first network, the preregistration request including identifying information that is useable to identify the mobile device and further including a request to prepare the second network to service the mobile device.

Abstract: Methods and computer-readable media are provided to enable an Internet protocol (IP) data session to be established between a mobile device and a telecommunications network. To establish an IP data session, it may be determined, prior to authenticating the device, whether the device is authorized to communicate via IPv4, IPv6, or both. A mobile device may be capable of communicating via both IPv4 and IPv6, such as a dual-stack device, but the device may only be authorized for either IPv4 or IPv6. A request to establish the IP data session may first be received from a mobile device, and an IP version with which the mobile device is authorized to communicate may then be determined by querying a customer-profile database. This authorization information may be communicated to an authentication component that authenticates the devices, and subsequently, an IP data session is initiated.