Abstract: A method of updating a user presence status at at least one terminal connected to a telecommunications network, on the basis of presence status information provided by at least one status source of said terminal. The presence status is determined during an aggregation step comprising collecting a plurality of unit presence probability values provided by a plurality of status sources associated with said terminal; and calculating an aggregated presence status probability resulting from a linear combination of said unit presence probability values.

Abstract: A method of processing the presence status of a user at at least one terminal connected to a telecommunications network on the basis of presence status information provided by at least one status source of said terminal. The presence status is weighted as a function of a pertinence value that is calculated as a function of time. The invention makes it possible over time to correct the pertinence of presence information to as maximize the reliability of a presence status calculated on the basis of said information.