Within the framework of a mobile health care system, an exchange of medical data between a portable medical device (114) and a health care server (150) is required. Therefore, a method for monitoring medical data is disclosed, the method being applicable to a system (110) comprising a portable medical device (114), a mobile communications device (112), and, optionally, a medical care server (150), the portable medical device (114) and the mobile communications device (112) each comprising at least one interface (126, 136) for data transfer. The method comprises a step of establishing a download link (144) between the mobile communications device (112) and a download server (146). Followingly, the method comprises a step of selecting an appropriate communication software package from a plurality of communication software packages for controlling a data transfer between the mobile communications device (112) and the portable medical device (114) from the download server. Further, the method comprises a download step for downloading communication software package from the download server (146) to the mobile communications device (112) and a step of installation of the communication software package on the mobile communications device (112).
