Abstract: A System for setting up communications between users of a telecommunication network (1, 10), comprising a central server (2), this server comprising: means (4) for receiving and memorizing user identifiers, associated with information necessary to set up a communication with the user's terminal and profile information based on which the user would like to get into anonymous communication with other service users; means for distributing the received profile information on user terminals (5, 8), and means for receiving requests from user terminals for setting up a communication based on user profile information, and means for setting up on request a communication between two user terminals; each user terminal comprising means for receiving and displaying user profile information sent by the central server, means for selecting the profile information of a user, and means for transmitting to the central server a request to set up a communication with the user corresponding to the selected profile information.