Abstract: A method and a Packet Data Service Node (PDSN) of restricting geographical use of a service for a mobile terminal (MT) in a packet data telecommunications network. The PDSN receives from an access node (AN), a registration request message having a cell information for requesting. The PDSN translates the cell information into a zone ID, stores the zone ID in a first table and sends to a AAA server, an access request message for authenticating the MT. PDSN further receives from the AAA server, an access accept message for authorizing the MT to receive packet data service, wherein the access accept message includes an allowance information. Afterwards the PDSN compares the allowance information with the zone ID. If the allowance information is different from the zone ID in the first table, the PDSN set up a filter for the MT and rejects packet data for the requested packet data service.

Abstract: A method and a Packet Data Service Node (PDSN) of restricting geographical use of a service for a mobile terminal (MT) in a packet data telecommunications network. The PDSN receives from an access node (AN), a registration request message having a cell information for requesting. The PDSN translates the cell information into a zone ID, stores the zone ID in a first table and sends to a AAA server, an access request message for authenticating the MT. PDSN further receives from the AAA server, an access accept message for authorizing the MT to receive packet data service, wherein the access accept message includes an allowance information. Afterwards the PDSN compares the allowance information with the zone ID. If the allowance information is different from the zone ID in the first table, the PDSN set up a filter for the MT and rejects packet data for the requested packet data service.

Abstract: A method of call control in a packet-switched radio telecommunication network that minimizes delays in launching a voice call from a first Internet Protocol (IP)-based mobile station (MS) to a second IP-based MS. The method includes the steps of preventing voice traffic from being routed to an Internet Service Provider (ISP), and setting up an optimized path for voice traffic from the first MS to the second MS. The optimized path may be set up by creating a shortest route tunnel between a first serving GPRS service node (SGSN1) serving the first MS and a second SGSN (SGSN2) serving the second MS. Alternatively, the tunnel may be established between the base station controllers (BSCs) of each MS's serving radio base station.

Abstract: The present invention relates to a system, a method and a service node for providing a pre-paid service to a mobile station for data transmission in a packet data cellular telecommunication network. A connection is established between the mobile station and the service node in the packet data cellular telecommunication network. Upon establishment of the connection, at least one pre-paid connection limit parameter is obtained from a subscriber account database. The at least one pre-paid connection limit parameter is indicative of a limit at which the connection must be terminated. Then, the service node monitors the connection to determine whether the data transmission exceeds the at least one pre-paid connection limit parameter. If the data transmission exceeds the at least one pre-paid connection limit parameter, the connection is terminated.