... International Conference on Informatics‘2007, pp. 32-35, Bratislava, June 2007.[6] BAROŇÁK, I. – HALÁS, M. – ORGOŇ, M.Mathematical model of VoIP con-nection delay. In: Telecommunications, Networks ... of the adopted security measure. We described twovirtual testbed, one developed using a traffic emulator and the second one based on a network simulator. Both the virtual environments were implemented ... Ixia, which consists of the IxChariot console and IxChariot endpoints.e IxChariot console allows a selection of several test configurations, such as theused codec, timing, number of concurrent...