In a mobile communications network including an unlicensed radio access portion adapted to communicate with mobile stations over an unlicensed-radio interface an arrangement and method is proposed to permit calls to be handled differently depending on whether the caller and subscriber wishes to connect via the unlicensed radio access network or not. This is achieved by providing a home location register adapted to identify stored subscriber identity information identifying a mobile station from at least two separate dialled numbers and to output mobile station location information associated with the subscriber identity information in response to the dialled number. At least one of these numbers is reserved for connections to a mobile station via the unlicensed radio access network portion only. The mobile communications core network is furthermore arranged to terminate a call using the second dialled number when a mobile station is not connected to the unlicensed radio access network.