Abstract: A mediation unit (2, 3, 4, 5) in a telecommunications network for mediating between an application service provider (1) and a plurality of service providers (6), said unit (2, 3, 4, 5) comprising recovery means (2, 3) for recovering data concerning users from various service providers (6) and acquiring indications qualifying a user and qualifying one or types of data required on that user, such indications being issued by the application service provider (1), which mediation unit is characterized in that it comprises means (4, 5) for identifying a selection of service providers (6) containing the type of data required by the user, the recovery means (2, 3) further taking account of this selection so as to interrogate only service providers (6) selected in this way.

Abstract: A mediation unit (2) for mediating between application service providers (1) and resource providers (3) in a telecommunications network, which mediation unit (2) comprises means for receiving a resource allocation request (a) from the service provider (1) and requesting the corresponding resource from the resource provider (3) and is characterized in that it comprises means for receiving and taking into account an acknowledgement message (c?, d?, e?, f?, g?, h?, i?, j?) from the resource provider (3) to the effect that the resource necessary for supporting the quality of service has been implemented and means for receiving resource allocation requests from an application service provider (1) and requesting corresponding resources from resource providers (3) and receives and takes into account acknowledgement messages (c?, d?, e?, f?, g?, h?, i?, j?) coming from each resource provider and sends a notification to the application service provider (1) to the effect that all of the requested resources have been im

Abstract: A mediation unit (2, 3, 4, 5) in a telecommunications network for mediating between an application service provider (1) and a plurality of service providers (6), said unit (2, 3, 4, 5) comprising recovery means (2, 3) for recovering data concerning users from various service providers (6) and acquiring indications qualifying a user and qualifying one or types of data required on that user, such indications being issued by the application service provider (1), which mediation unit is characterized in that it comprises means (4, 5) for identifying a selection of service providers (6) containing the type of data required by the user, the recovery means (2, 3) further taking account of this selection so as to interrogate only service providers (6) selected in this way.