A method of operating a radio access network comprising: acquiring, at a femto radio base station (28 f j) and over a radio interface, system information broadcast in a radio access network wherein the step of acquiring the system information comprises: scanning (4A-1) a surrounding macro coverage area of the femto radio base station (28 f j) for obtaining cell identity information for detected cells; adding (4A-2) the cell identity information for the detected cells to a neighbor data structure; performing (4A-3) measurement of signal strength for each detected cell; adding (4A-3) the measured signal strength value for each detected cell to the neighbor data structure; camping (4B-1) on a macro cell; adding (4B-2) the cell identity information and a signal strength measurement for the camped-on macro cell to the neighbor data structure; using at least one system information block in the camped-on macro cell for obtaining information about a candidate neighboring cell which is not yet present in the neighbour data structure; performing measurement of signal strength for the candidate neighboring cell; and adding (4B-3) cell identity information and the signal strength measurement for the candidate neighboring cell to the neighbor data structure; reporting (4A-4) the neighbor data structure to a radio network controller node and using the neighbor data structure for building (4A-5) a neighbor list at the radio network controller node; transmitting (4A-6) the neighbor list to the femto radio base station (28 fj); and transmitting (4A-8) the neighbor list from the femto radio base station (28 fj) to a user equipment unit served by the femto radio base station (28 fj). acquiring, at a femto radio base station (28 f j) and over a radio interface, system information broadcast in a radio access network wherein the step of acquiring the system information comprises: scanning (4A-1) a surrounding macro coverage area of the femto radio base station (28 f j) for obtaining cell identity information for detected cells; adding (4A-2) the cell identity information for the detected cells to a neighbor data structure; performing (4A-3) measurement of signal strength for each detected cell; adding (4A-3) the measured signal strength value for each detected cell to the neighbor data structure; camping (4B-1) on a macro cell; adding (4B-2) the cell identity information and a signal strength measurement for the camped-on macro cell to the neighbor data structure; using at least one system information block in the camped-on macro cell for obtaining information about a candidate neighboring cell which is not yet present in the neighbour data structure; performing measurement of signal strength for the candidate neighboring cell; and adding (4B-3) cell identity information and the signal strength measurement for the candidate neighboring cell to the neighbor data structure; scanning (4A-1) a surrounding macro coverage area of the femto radio base station (28 f j) for obtaining cell identity information for detected cells; adding (4A-2) the cell identity information for the detected cells to a neighbor data structure; performing (4A-3) measurement of signal strength for each detected cell; adding (4A-3) the measured signal strength value for each detected cell to the neighbor data structure; camping (4B-1) on a macro cell; adding (4B-2) the cell identity information and a signal strength measurement for the camped-on macro cell to the neighbor data structure; using at least one system information block in the camped-on macro cell for obtaining information about a candidate neighboring cell which is not yet present in the neighbour data structure; performing measurement of signal strength for the candidate neighboring cell; and adding (4B-3) cell identity information and the signal strength measurement for the candidate neighboring cell to the neighbor data structure; reporting (4A-4) the neighbor data structure to a radio network controller node and using the neighbor data structure for building (4A-5) a neighbor list at the radio network controller node; transmitting (4A-6) the neighbor list to the femto radio base station (28 fj); and transmitting (4A-8) the neighbor list from the femto radio base station (28 fj) to a user equipment unit served by the femto radio base station (28 fj).