Abstract: Apparatus for connecting telephone switch to fixed telephone network or PSTN via a radiotelephone network of GSM type or type derived therefrom. A fixed radiotelephone terminal (RT) has a processor that identifies calls containing an identity belonging to a predetermined set of international mobile subscriber identities (IMSIs), and calls containing an identity belonging to a predetermined set of temporary mobile subscriber identities (TMSIs), both of the sets corresponding to user terminals (UT1, . . . , UT10) which are connected to the switch. The radiotelephone network issues a distinct invoice for each user terminal (UT1, . . . , UT10) even though the same fixed radiotelephone terminal (RT) is used by a plurality of different users, and the radiotelephone network can perform direct inward dialing to each user terminal (UT1, . . . , UT10).

Abstract: In a method of sharing physical resources associated with a server system between the server system and a client system, a respective associated address designating a given location in a program memory and identifying the start of one of a plurality of tasks which access the physical resources is associated with the value assumed by a first parameter contained in a first field of the access request message. Respective values assumed by or associated with second parameters contained in a second field of the access request message with predetermined first locations are written in a data memory. The associated address is loaded into an execution register of the processor circuit in order to initiate the task. The steps of this method are implemented by an interface device and a program required for operation of the interface device is dissociated from each task of the plurality of tasks.