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Mr. Levy has been a director since March 2006. Mr. Levy most recently served as a Managing Director and Global Head of Communications Technology Research at Lehman Brothers from July 1998 until September 2005. Before joining Lehman Brothers, Mr. Levy was a Director of Telecommunications Research at Salomon Brothers from March 1997 to July 1998, a Managing Director and Head of the Communications Research Team at Oppenheimer & Co. from July 1994 to March 1997, and a senior communications analyst at Hambrecht & Quist from July 1986 to July 1994. Mr. Levy also serves as a member of the board of directors for Zhone Technologies, and Allot Communications. Mr. Levy holds a master degree in business administration and a bachelor of science degree in materials engineering from Rensselaer Polytechnic Institute. | 