Abstract: The present invention relates to a method of routing a call between a first terminal which is a mobile terminal (5) and a second terminal (4) in a global telecommunications network, it being possible for the call to be routed in the global network a)—at least in part through a satellite telecommunications network (1) using base stations (2, 3) giving access to satellites, and b) —at least in part through a terrestrial telecommunications network (PSTN) connected to the base stations (2, 3), each satellite (1) in the satellite telecommunications network defining an overall coverage area covering a plurality of base stations, the overall coverage area defining a plurality of coverage sub-areas, each of which is associated with a respective one of the base stations (2, 3).