Abstract: A method and a system for connecting a stationary subscriber apparatus selectively to a mobile subscriber apparatus through a telephone subscriber exchange, which includes a call switching function, by means of which incoming calls can be transferred, and which is connected to a number of stationary subscriber apparatus included in the telephone system and a number of mobile subscriber apparatus also included in said system, and computer apparatus included in the switchboard, in response to a call from a stationary subscriber apparatus to a telephone number relating to a plurality of mobile subscriber apparatus, for instance a group number. Upon receipt of a call, the telephone switchboard or subscriber exchange and the computer apparatus ascertain or establish the geographical area and/or geographical location of the stationary subscriber apparatus of each mobile telephone apparatus that is marked unoccupied, wherein the call received is transferred to the selected mobile subscriber apparatus.