A wireless terminal that communicates across a radio interface with at least one radio access node and to one or more management entities of core networks via the radio access node, the wireless terminal comprising: receiver unit configured to receive, from the at least one radio access node, first access control information and separately to receive, from the at least one radio access node, second access control information; the first access control information comprising one or more access categories and access barring status for each of the access categories, the second access control information comprising one or more access categories and access barring status for each of the access categories, processor unit configured to: register to a first core network; upon initiating an access attempt associated with an access category, determine whether or not the access attempt is allowed for the first core network based on the access barring status of the access category included in the first access control information; in a case that the access attempt is barred for the first core network, determine whether or not the access attempt is allowed by a second core network based on the access barring status of the access category included in the second access control information, and; in a case that the access attempt is allowed for the second core network, perform an inter-system change procedure to switch a registered core network from the first core network to the second core network by sending a non-access stratum, NAS, layer message to a management entity of the second core network. receiver unit configured to receive, from the at least one radio access node, first access control information and separately to receive, from the at least one radio access node, second access control information; the first access control information comprising one or more access categories and access barring status for each of the access categories, the second access control information comprising one or more access categories and access barring status for each of the access categories, the first access control information comprising one or more access categories and access barring status for each of the access categories, the second access control information comprising one or more access categories and access barring status for each of the access categories, processor unit configured to: register to a first core network; upon initiating an access attempt associated with an access category, determine whether or not the access attempt is allowed for the first core network based on the access barring status of the access category included in the first access control information; in a case that the access attempt is barred for the first core network, determine whether or not the access attempt is allowed by a second core network based on the access barring status of the access category included in the second access control information, and; in a case that the access attempt is allowed for the second core network, perform an inter-system change procedure to switch a registered core network from the first core network to the second core network by sending a non-access stratum, NAS, layer message to a management entity of the second core network. register to a first core network; upon initiating an access attempt associated with an access category, determine whether or not the access attempt is allowed for the first core network based on the access barring status of the access category included in the first access control information; in a case that the access attempt is barred for the first core network, determine whether or not the access attempt is allowed by a second core network based on the access barring status of the access category included in the second access control information, and; in a case that the access attempt is allowed for the second core network, perform an inter-system change procedure to switch a registered core network from the first core network to the second core network by sending a non-access stratum, NAS, layer message to a management entity of the second core network.