Abstract: A system for locating a communications terminal (10). The system comprises a location hybridization module (14) which comprises: a spatial filter (142); a temporal filter (141) for the geographical location adapted to compare a time corresponding to the age of the latest geographical location with a first predetermined maximum time and, in the event of a positive comparison result, to compare said time corresponding to the age of the latest geographical location with a second predetermined maximum time greater than said first predetermined maximum time; a speed filter (145) adapted to compare the speed at which said terminal (10) is moving with a predetermined maximum speed; a module (144) for estimating the uncertainty as to the geographical location; and a selection module (143) adapted to select either the area defined by the latest geographical location or the network-location area. Application is to mobile telephone services that need to know the location of the terminals.