A gateway system of a remote-reading apparatus comprising a plurality of metering devices each comprising a metering module and a short-range radiofrequency module ; the gateway system comprising: - a short-range radiofrequency emitter/receiver device ; each radiofrequency module of each metering device being adapted to communicate with this radiofrequency emitter/receiver device , and - a hub device communicating, on the one hand, with said radiofrequency emitter/receiver device and, on the other hand, with at least one external telecommunications network (1, SAT); the radiofrequency emitter/receiver device comprising: - reception means for receiving from the hub device a gateway downlink signal (S1), built from a network synchronisation signal (S sync ) originating from a clock of the telecommunications network, and - processing means for adapting the radiofrequency emissions to the metering device and/or the radiofrequency receptions coming from the metering device, from this received gateway downlink signal (S1), so that these radiofrequency emissions and/or receptions are phase- and/or frequency-synchronised according to the network synchronisation signal (S sync ) ; the radiofrequency emissions being adapted to emit to the metering device , following the reception of metering data (MSG) originating from the metering device , a radiofrequency downlink signal (S2) to phase- and/or frequency-synchronise the radiofrequency emissions and/or receptions of the radiofrequency module of the metering device according to the network synchronisation signal (S sync ) ; and the hub device comprising: - reception means for receiving from said telecommunications network (1, SAT) a network synchronisation signal (S sync ) originating from a clock of this network, - processing means for building the gateway downlink signal (S1) from the network synchronisation signal, and - transmission means for transmitting the gateway downlink signal (S1) to the radiofrequency emitter/receiver device, the processing means being adapted to build the gateway downlink signal (S1) so that the radiofrequency emissions and/or receptions of the radiofrequency emitter/receiver device are adapted from this gateway downlink signal and phase- and/or frequency-synchronised according to the network synchronisation signal. - a short-range radiofrequency emitter/receiver device ; each radiofrequency module of each metering device being adapted to communicate with this radiofrequency emitter/receiver device , and - a hub device communicating, on the one hand, with said radiofrequency emitter/receiver device and, on the other hand, with at least one external telecommunications network (1, SAT); - reception means for receiving from the hub device a gateway downlink signal (S1), built from a network synchronisation signal (S sync ) originating from a clock of the telecommunications network, and - processing means for adapting the radiofrequency emissions to the metering device and/or the radiofrequency receptions coming from the metering device, from this received gateway downlink signal (S1), so that these radiofrequency emissions and/or receptions are phase- and/or frequency-synchronised according to the network synchronisation signal (S sync ) ; - reception means for receiving from said telecommunications network (1, SAT) a network synchronisation signal (S sync ) originating from a clock of this network, - processing means for building the gateway downlink signal (S1) from the network synchronisation signal, and - transmission means for transmitting the gateway downlink signal (S1) to the radiofrequency emitter/receiver device, <EOS>