has an allocated second database 16 2 in both databases 16 1 16 2 la ra cell crs mapping information is stored the first rnas 5 1 receives idle mode paging requests for the first location area la 1 and serves as a default rnas in an initial access the cgw functionality 12 of the ip bts 10 is responsible for the cells belonging to the first location area la 1 as indicated by the arrows in fig4 an idle mode paging request is issued by the cn to the default first rnas 5 1 which routes the idle mode page request to the crs functionality 11 of the ip bts 10 the crs functionality 11 responds to the first rnas 5 1 with an initial access message which is routed by the first rnas 5 1 based on the mapping information of the first database 16 1 to a selected or allocated rnas e g the second rnas 5 2 in response thereto the second rnas 5 2 issues a response message to the crs functionality 11 and the rrc connection can be established in the connected mode pagings are also routed from the core network via the default first rnas 5 1 to the crs functionality 11 of the ip bts 10 the access network architecture may differ from the architectures shown in fig3 and 4 in particular the access network could be implemented without rncs or rnass then the lu interface is connected directly to the base station 10 in the following an idle paging scenario is described in an utran environment with reference to fig5 a to 5 d wherein a ue 17 having a connection to a first core network cn 1 and being in an idle.