A method for use in a cellular telephony network, said network comprising • a first number of cells of a first kind, wherein each cell of the first number of cells is adapted to accommodate at least a first number of user terminals, with traffic of the user terminals in a cell of the first kind being controlled by a corresponding base station, • a second number of cells of a second kind, wherein each cell of the second number of cell is adapted to accommodate at least a second number of user terminals, with traffic of the user terminals in a cell of the second kind being controlled by a corresponding base station, said second number of cells of the second kind having a coverage which at least partially coincides with the coverage of one or more cell of the first kind, the network also being adapted to control the corresponding base stations (111; 125-127), and to hand over control of user terminals (123, 112) from one base station to another base station, the method being used when control of a user terminal in the cell of the second kind is handed over to a target base station of the cell of the first kind, wherein the method comprises: receiving a request for handover, the request indicating that the control of the user terminal in the cell of the second kind is to be handed over to the target base station of the cell of the first kind, the method being characterized in that it comprises the step of: sending, by a control function associated with the target base station of the cell of the first kind, instructions to a control function associated with a serving base station of the cell of the second kind, said instructions comprising information regarding at least one of the following: • one or more frequencies on which the base station of the second kind may operate, and • an identity code which may be used by the base station of the second kind, wherein said instructions are only sent if the request for handover comprises specific information which makes it possible to determine the identity of the cell of the second kind. • a first number of cells of a first kind, wherein each cell of the first number of cells is adapted to accommodate at least a first number of user terminals, with traffic of the user terminals in a cell of the first kind being controlled by a corresponding base station, • a second number of cells of a second kind, wherein each cell of the second number of cell is adapted to accommodate at least a second number of user terminals, with traffic of the user terminals in a cell of the second kind being controlled by a corresponding base station, said second number of cells of the second kind having a coverage which at least partially coincides with the coverage of one or more cell of the first kind, the network also being adapted to control the corresponding base stations (111; 125-127), and to hand over control of user terminals (123, 112) from one base station to another base station, the method being used when control of a user terminal in the cell of the second kind is handed over to a target base station of the cell of the first kind, wherein the method comprises: receiving a request for handover, the request indicating that the control of the user terminal in the cell of the second kind is to be handed over to the target base station of the cell of the first kind, the method being characterized in that it comprises the step of: sending, by a control function associated with the target base station of the cell of the first kind, instructions to a control function associated with a serving base station of the cell of the second kind, said instructions comprising information regarding at least one of the following: receiving a request for handover, the request indicating that the control of the user terminal in the cell of the second kind is to be handed over to the target base station of the cell of the first kind, the method being characterized in that it comprises the step of: sending, by a control function associated with the target base station of the cell of the first kind, instructions to a control function associated with a serving base station of the cell of the second kind, said instructions comprising information regarding at least one of the following: • one or more frequencies on which the base station of the second kind may operate, and • an identity code which may be used by the base station of the second kind, wherein said instructions are only sent if the request for handover comprises specific information which makes it possible to determine the identity of the cell of the second kind.