In medical environment, there is a fundamental demand to transfer and store large volumes of image data generated by modern medical devices. Currently the majority of the medical facilities spread around the country have quite limited Internet access. The aim of our work, presented in this article, was to find an optimal solution to transfer large volumes of image date over low-capacity links with regarding to minimum response-times. First we statistically described the traffic generated by the corresponding medical equipment and then evaluated the behaviour of these mathematical models in the OPNET Modeler discrete event simulation environment. The simulation results and their interpretation represent the main contribution of the following text.