A method for providing radio access to a communication network for one or more mobile terminals, T, at a local site, the method comprising: - receiving, by a local transition unit at the local site, analog signals from at least one antenna and associated radio head installed at the local site, when the at least one antenna receives the signals from the one or more mobile terminals, - converting, by the local transition unit, the analog signals into optical form, - sending, by the local transition unit, the signals in optical form over an optical link to a central office comprising or being connected to a set of radio units, wherein the radio units in the set of radio units are capable of communicating data carried by the signals to and from the communication network according to different radio technologies and/or for different network operators, - converting, by a central transition unit at the central office, the signals into a form adapted for reception by a radio unit in the set of radio units, characterized in that the method further comprises: - instructing or having instructed, by a control unit, the central transition unit to route the signals to at least one of the radio units based on configuration data which maps the at least one antenna and associated radio head to said at least one of the radio units, wherein the configuration data is used to identify which network operator and radio technology the at least one antenna and associated radio head is associated with, wherein said configuration data has been registered (7:5) at the control unit when said configuration data was received in control signalling (7:4) from the at least one antenna and associated radio head, and - forwarding, by the central transition unit, the signals according to the instruction from the control unit to said at least one of the radio units for digital processing and transmission over the communication network. - receiving, by a local transition unit at the local site, analog signals from at least one antenna and associated radio head installed at the local site, when the at least one antenna receives the signals from the one or more mobile terminals, - converting, by the local transition unit, the analog signals into optical form, - sending, by the local transition unit, the signals in optical form over an optical link to a central office comprising or being connected to a set of radio units, wherein the radio units in the set of radio units are capable of communicating data carried by the signals to and from the communication network according to different radio technologies and/or for different network operators, - converting, by a central transition unit at the central office, the signals into a form adapted for reception by a radio unit in the set of radio units, - instructing or having instructed, by a control unit, the central transition unit to route the signals to at least one of the radio units based on configuration data which maps the at least one antenna and associated radio head to said at least one of the radio units, wherein the configuration data is used to identify which network operator and radio technology the at least one antenna and associated radio head is associated with, wherein said configuration data has been registered (7:5) at the control unit when said configuration data was received in control signalling (7:4) from the at least one antenna and associated radio head, and - forwarding, by the central transition unit, the signals according to the instruction from the control unit to said at least one of the radio units for digital processing and transmission over the communication network.