A method for improving system availability in data replication environments is disclosed herein. For example, a web page may be stored on a digital terminal for access by a user of a client device to request specific actions to be performed or to request information. The method and apparatus for controlling inter-plan handover to a CSG cell according to the present invention is characterized in that a control apparatus of a core network acquires the allowed CSG lists for determining a User Equipments capability of access to a CSG cell and determines whether to permit inter-PLMN handover based on the allowed CSG lists. A first inner passage extends along an interior of the housing from the first lead aperture to the second end of the housing. A left side edge of the overlap sheet is joined to a right side part of the left side sheet.