COMPUTER CONTROLLED SUBSCRIBER DEVICE FOR OPERATION IN TELECOMMUNICATION NETWORKS, IN PARTICULAR MOBILE RADIO NETWORKS, WITH DIFFERENT SYSTEM TECHNOLOGY

摘要

A computer-controlled radiotelephone, whose software is stored in storage modules, is extended by different system engineering for operation in mobile radio networks. For this purpose, several storage areas (10) are provided with the software (A, B, C, D) appropriate to the relevant mobile radio network and optionally designed so that they can be activated. The optional commutation can be effected manually or automatically by means of an evaluation device (7). The evaluation criterion can be derived via the evaluation device (7) from the quality of the contact with the mobile radio network or from the network characteristic signals emitted by said network. In the case of manual commutation, the evaluation device (7) can temporarily or permanently block unsuitable mobile radio networks (Fig. 1). According to one embodiment, the HF part can be interchanged by unskilled persons without the use of tools.