Dirk Borowski, Manager Support Services, has been working in the area of testing private branch exchanges with Fraunhofer Institute FOKUS for many years. As testing expert, he is strongly involved in TTCN-3 standardization activities of 3GPP/ETSI working groups and was certified as TTCN-3 specialist by iSQI in 2007. He holds a Master in Electrical Engineering from Technical University Berlin.
Yuchuan Liu, Senior Support Engineer, joined the Professional Services team of Spirent in 2010, bringing in expertise in telecommunication technique and international audience. Two weeks after his entry he achieved the TTCN-3 Certificate issued by iSQI and has been holding numerous training courses since then. Yuchuan holds a Master in Economic Engineering from Technical University Berlin.
Madalina Tepelmann, Support Engineer, has over 14 years of experience in multiple software engineering departments: from quality assurance, designing and implementing test systems, to teaching and assisting customers and colleagues with TTCN-3 language and products developed across different domains. She is certified as TTCN-3 specialist by iSQl and holds a M. Sc. degree in Computer Science from Politehnica University of Bucharest.
Axel Rennoch works as computer scientist and manager of validation and testing projects on next generation networks and software technologies at Fraunhofer Institute FOKUS. His strong technical experience includes the development and validation of industrial test solutions using the standardized test technology TTCN in the telecom and automotive domain as well as functional and non-functional service and protocol tests. Axel participates actively in national and international standardization groups and is leading the ASQF section on Software Testing in Berlin/Brandenburg.