Abstract: A telecommunications system is disclosed for extending the range of at least two service networks having different specified signalling standards. The telecommunications system includes a radio-based access network which includes at least one port to each service network. The ports are connected to at least one base station in the access network. The access network also includes a radio-based access network part capable of connecting the base station to a radio unit in the access network. The radio unit is registered in one of the service networks, the so-called home network of the radio unit, and a signal carrier in the access network has a first terminal point in the radio unit and a second terminal point in a port which connects the access network with the home network. The port functions to combine the signal carrier in the access network with a signal carrier in the home network.

Abstract: The present invention relates to a method of registering a mobile station in a cellular mobile radio system in which areas, each including a plurality of cells, form registration areas. Each registration area (RA1, RA2, RA3, . . . ) has its own identity (X). According to the proposed method, individual location areas are defined whenever registering a given mobile station with the intention of avoiding an unnecessarily high number of registrations in border areas of the different registration areas. A location area may have the form of a list of registration areas (X1, X2, X3, . . . ), which is stored in a mobile station (MS), or may be stored in the system (HLR, MSC) and transmitted to the mobile station (MS) via a base station (BS) in a given registration area, in conjunction with registration of the mobile station in this area.

Abstract: A method of facilitating interchanging the use of a mobile station and a permanently wired telephone set includes providing the number of the permanently wired telephone set as a bar code near the telephone set. A bar code reader is connected to the mobile station for scanning the bar code for ordering of interchanging the mobile station and the permanently wired set without dialing the number on a keyset of the mobile station. A predetermined interchanging key on the keyset is designated and connected for ordering the interchanging. The interchange is initiated by scanning the bar code with the bar code reader and pressing the interchanging key.