Method of managing data streams on a communications network

The subject of the invention is a method of managing data streams on a communications network, which network comprises at least one user Ui and at least one data source Si, in which method each user is assigned one or more services Wi, each service consisting of the association of a data source Si with a characteristic Qi of the quality of transmission of the data sent by this source to this user and in which the network access rights are managed dynamically by reducing the quality of transmission of the data of at least one service in progress and/or by suspending or stopping the transmission of the data of at least one service in progress so as to be able to incorporate a new user Ui or a new service Wi, characterized in that, when it is not possible to sufficiently downgrade the services in progress in order to incorporate a new service, a request for confirmation of use of his service or services in progress Wi is transmitted to at least one user Ui concerned, and then the service or services for which no positive response has been given after a given period is or are suspended or halted.