Abstract: A method of managing the sending of multimedia contents to a mobile terminal (2) equipped with a security module (3), the multimedia contents being sent in encrypted form from a broadcast server (1) and via a communications network (4). The method comprises the following steps: a) sending to the mobile terminal (2) rights-of-use data for a multimedia content, b) storing said rights-of-use data in the security module (3) of the mobile terminal (2), c) generating a series of encryption/decryption keys, the series of decryption keys being generated from rights-of-use data stored in the security module (3), d) sending the multimedia content to the mobile terminal (2), the content being encrypted with successive keys from the series of encryption keys that has been generated, and e) the mobile terminal receiving the multimedia content and decrypting the multimedia content using the decryption keys from the series of decryption keys generated in the security module of the mobile terminal.

Abstract: A system for sending an instant message to a terminal that is not compatible with the instant messaging (IM) service. The system comprises a first terminal (10, 10?, 10?) that is compatible with said IM service, a second terminal (20, 20?, 20?) that is not compatible with said IM service and is compatible with a short message, an IM server (100) having means for managing said instant messaging service for said second terminal (20, 20?, 20?), and a short message center (200) including means for managing short messages coming from said IM server (100).

Abstract: This PTT (Push-To-Talk) mode telecommunications system linking users of a wireless telephone network includes a management module (26) which can determine the rights of the participants to participate in and talk in a PTT session as a function of the telecommunications service quality level used by each user to participate in the PTT session and as a function of a predefined telecommunications service quality level required to participate in that PTT session.

Abstract: A method of managing the sending of multimedia contents to a mobile terminal (2) equipped with a security module (3), the multimedia contents being sent in encrypted form from a broadcast server (1) and via a communications network (4). The method comprises the following steps: a) sending to the mobile terminal (2) rights-of-use data for a multimedia content, b) storing said rights-of-use data in the security module (3) of the mobile terminal (2), c) generating a series of encryption/decryption keys, the series of decryption keys being generated from rights-of-use data stored in the security module (3), d) sending the multimedia content to the mobile terminal (2), the content being encrypted with successive keys from the series of encryption keys that has been generated, and e) the mobile terminal receiving the multimedia content and decrypting the multimedia content using the decryption keys from the series of decryption keys generated in the security module of the mobile terminal.

Abstract: A method of creating a secure link between a data processing device (MOB) and a security module (USIM), the data processing device being adapted to communicate with a security module storing a secret data item (k) necessary for the execution by the device of a data processing task, the data processing device and the security module being adapted to communicate with a telecommunications network (RES), wherein the method comprises the steps of: identifying the data processing device (MOB) and the module (USIM) for which a secure link is to be set up in order to send said secret data item (k) from the module to the device; a step of delivering an encryption key (K) in which a trusted server (SC) connected to the telecommunications network delivers an encryption key (K) both to the module (USIM) and to the data processing device (MOB) that have been identified; an encryption step in which said secret data item (k) is encrypted in the module by means of said encryption key (K); a transmission step in which the res

Abstract: A method, system, and computer program product for informing an application server whether or not a mobile subscriber is present on a mobile telecommunication network includes a first step for sending a first distinctive signal from the mobile subscriber to the mobile telecommunication network, intended for the mobile subscriber. A second step determines a present or not present binary state according to a reaction of the mobile telecommunication network to the first signal. A third step communicates to the application server the state determined in the second step.