This invention relates to user access device to intelligent services of an intelligent network (IN) comprising a service control point (2) that communicates with at least one group of physical entities (4, 6, 8) designed to provide at least one initial service element, and with several auxiliary platforms (10.sub.i) designed to provide users with additional service elements for completing the initial service element.According to the invention, the device also comprises a communication interface (12) that allows an auxiliary platform (10.sub.i) to send the service control point (2) service element execution queries in real time, and receive the data for executing these additional services from this service control point (2) as a response.