the invention permits service providers to self - configure message or dialogue services on an arrangement provided by an independent network operator . said arrangement comprises a provider device , to which the service provider has access . components or elements of messages or dialogues , altered or newly generated by service providers , stored in the provider device , are transmitted to one or more provision devices , where the above are available for information output devices for the processing of a new or changed message or dialogue service . according to the invention , an interface between service provider and network operator is achieved , which permits the service provider an efficient configuration of the services provided thereby and the use of resources provided by a network operator . as a result of the structure of the interface and by means of security measures undesired viewing or access to the resources of the network operator can be avoided .