Abstract: The invention concerns a method for interactive exchange between a subscriber identification module, co-operating with a terminal in a radiotelephone, and at least a local device. The invention is characterised in that it provides a step which consists in using a first communication channel between the local device and the subscriber identification module. Said first communication channel carries at least a message enabling the subscriber identification module to receive and/or request information from the local device and/or vice-versa.

Abstract: The invention concerns a method and a system for enabling multiple use of a radiotelephone, also called station, included in a radio communication system. The invention is characterised in that the station can adopt at least the following two operating states, each defined by at least one distinct state parameter: a so-called “mobile station” state, associated with a situation of geographical mobility of the station; and a so-called “fixed station” state, associated with a situation of geographical rigidity of the station within a predetermined fixed site, narrowly delimited in space. Moreover, the inventive method comprises at least a step which consists in a switching over the station, automatically or by user control, based on the presence of the station in a fixed site.