Abstract: Disclosed are different terminals involved in a conference and arranged in a tree topology. Each terminal stores a list of participating terminals, the types of media streams of each terminal, and a media diagram referring to the processing actions of the terminals, in order to allow the conference to be conducted without a server and in a self-organized manner, providing fault tolerance such that the conference as a whole can overcome the failure of any of the participating terminals, allowing the conference to be reconfigured when a user leaves the same, either because it ceases to respond owing to a problem in the terminal or because the user so desires.

Abstract: This invention refers to a method for providing presence information in telecommunication systems. It comprises the steps of: classifying the plurality of presence information statuses, generated by a plurality of telecommunication services associated to a user A, in groups depending on the telecommunication service; publishing simultaneously the plurality of presence information statuses of user A on a presence server; and notifying a set of presence information statuses from the plurality of the presence information statuses of user A, to a client of the presence server which is a watcher of user A. Finally the set of presence information statuses, notified by the presence server to the watcher, may be displayed on means adapted for displaying content according to their corresponding relevance, priority and expiration time.

Abstract: The method and system for synchronizing social networks and Personal Contact Cards (PCC) update the profile of a user published in an Open Mobile Alliance Converged Address Book (OMA CAB) system with the information published and updated on one or more social networks to which the user subscribes, by means of synchronization by polling or synchronization by subscription/notification. To do so, the user sends prior authorization to access the user profile published in the social network to a telecommunication services provider operating the OMA CAB system.

Abstract: Disclosed are different terminals involved in a conference and arranged in a tree topology. Each terminal stores a list of participating terminals, the types of media streams of each terminal, and a media diagram referring to the processing actions of the terminals, in order to allow the conference to be conducted without a server and in a self-organized manner, providing fault tolerance such that the conference as a whole can overcome the failure of any of the participating terminals, allowing the conference to be reconfigured when a user leaves the same, either because it ceases to respond owing to a problem in the terminal or because the user so desires.