A method, a system and a network element for performing a handover of a mobile equipment from a source network to a target network in a mobile telecommunication system, wherein data, which may be transferred via the source network to the mobile equipment when it is linked to the source network, are going to be buffered in a network element in case a need for a handover arises, and the data buffered in the network element are forwarded from the network element to the target network for transferring them to the mobile equipment after it has been linked to the target network.