Abstract: A method and system for providing prepaid data service. A subscriber terminal may establish a connection with a communications network. Based on a balance of a prepaid account, traffic from the subscriber terminal may be directed to a self-service portal. At the self-service portal, a user of the subscriber terminal may provide a credit card to add value to a prepaid account and to select a type of prepaid data service. The subscriber terminal may then be granted access to a data network. The balance of the prepaid account may be adjusted in accordance with the prepaid data service that is provided. When the balance of the prepaid account meets a threshold, the subscriber terminal's access to the data network may be redirected back again to the self-service portal.

Abstract: A mobile station is identified by a mobile directory number (MDN) and by a mobile station identifier (MSID). To communicate with a packet-switched network, the mobile station transmits its MSID, and a network access server, such as an interworking function (IWF), assigns an IP address to the mobile station and correlates the IP address with the MSID. A gateway receives a communication from the mobile station that includes the mobile station's IP address. The gateway identifies the mobile station's MDN based, at least in part, on the IP address, a correlation between IP address and MSID, and a correlation between MSID and MDN.

Abstract: A method and system for providing prepaid data service. A subscriber terminal may establish a connection with a communications network. Based on a balance of a prepaid account, traffic from the subscriber terminal may be directed to a self-service portal. At the self-service portal, a user of the subscriber terminal may provide a credit card to add value to a prepaid account and to select a type of prepaid data service. The subscriber terminal may then be granted access to a data network. The balance of the prepaid account may be adjusted in accordance with the prepaid data service that is provided. When the balance of the prepaid account meets a threshold, the subscriber terminal's access to the data network may be redirected back again to the self-service portal.