SYSTEM AND METHOD FOR SCALABLE MEDIA SWITCHING CONFERENCING

A system and a method for exchanging audio, video, and data information between at least two clients in a communication network supported by a central unit. The method comprises the steps of connecting the at least two clients to the central unit using a call control protocol, the call control protocol negotiating video formats and connection information for sending and receiving media streams; transmitting information from a first client to the central unit, the information comprising meta-data describing different media streams the first client is capable of transmitting; transmitting the information received from the first client to the at least one other client; on receiving the information on the different media streams the first client is capable of transmitting, the at least one other client is deciding on which of the available media streams from the first client the at least one other client will subscribe to; transmitting a subscribe message from the at least one other client to the central unit, subscribing to at least one available media stream from the first client; on receiving at least one subscribe message from the at least one other client, the central unit transmits a message requesting the first client to start transmitting media streams subscribed to by the at least one other client; transmitting the media streams subscribed to by the at least one other client from the first client to the central unit; and transmitting the media streams subscribed to by the at least one other client from the central unit to the at least one other client. L'invention porte sur un système et un procédé d'échange d'informations audio, vidéo et de données entre au moins deux clients dans un réseau de communication pris en charge par une unité centrale. Le procédé comprend les étapes consistant à connecter les au moins deux clients à l'unité centrale à l'aide d'un protocole de gestion de communication, le protocole de gestion de communication négociant des formats vidéo et des informations de connexion pour envoyer et recevoir des flux multimédias ; envoyer des informations d'un premier client à l'unité centrale, les informations comprenant des métadonnées décrivant différents flux multimédias que le premier client est capable d'envoyer ; envoyer les informations reçues du premier client à l'au moins un autre client ; lors de la réception des informations sur les différents flux multimédias que le premier client est capable d'envoyer, décider, par l'au moins