the present invention relates generally to a cellular telecommunications network . each cell has at least one base station for sending messages on a downlink of a frequency division duplex to end user equipments within the cell and for receiving messages on an uplink from end user equipments within the cell . other end user equipment located within the cell which have no or only poor communication directly with the base station over the fdd communicate with the base station indirectly via an intermediate end user equipment , such as a mobile telephone . the intermediate end user equipment includes an fdd transceiver and a time division duplex transceiver and an fdd / tdd interface . the intermediate end user equipment receives signals from the base station over the fdd using the fdd transceiver and relays them via the fdd / tdd interface and the tdd transceiver towards a relevant one of the other end user equipments over a tdd and receives signals from the other end user equipment over the tdd using the tdd transceiver and relays them via the fdd / tdd interface and the fdd transceiver to the base station over the fdd . the network provider thereby improves capacity and coverage by utilising tdd channels without having to deploy and tdd infrastructure .