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Jean-Christophe Pupin is currently the R&D team leader at Cirpack, responsible for software development and validation of the 'Voice Trunk & Access' product line. Previously, Jean-Christophe worked as an R&D project manager at Cirpack, focusing on 'Voice Over IP' software development. Before that, Jean-Christophe worked as a software engineer at Nortel Networks, Lucent Technologies, and Thales Raytheon Systems. Jean-Christophe graduated from ISTY - Institut des Sciences et Techniques des Yvelines in 1999.