A method of bi-directional communication in a cellular mobile telecommunication network (2) includes a terminal (10) that receives signals transmitted by at least one radio base station (5,7) of a downlink network of the cellular mobile telecommunication network (2) and selects one serving transmitting radio base station (6) among one or more transmitting (5) or transceiving (7) radio base stations of the downlink network, wherein the downlink network operator selects one serving receiving radio base station (8) among one or more receiving radio base stations (3,7) of an uplink network which have received a signalling message (URRA) transmitted by the terminal (10). By way of the serving receiving base station (8) of the uplink network and the serving transmitting base station (6) of the downlink network, the terminal (10) establishes bi-directional connections over the cellular mobile telecommunication network (2).