Hello, everyone and welcome to the first session of our "Expert on-Call" forum! My name is Elena Manatuica and I'm really honored to be the host of the pilot session. Our specialists:Europe TAC engineers Yao Fujian, Tan Li and Florin Enache are looking forward to receiving your questions and requests about today's topic: Network Virtualization. Feel free to ask or send us your remarks and tips starting from now! :)