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Glenn Wellbrock is the director of optical transport network architecture, design and planning at Verizon, where he is responsible for the development and deployment of new technologies for both the metro and long haul transport infrastructure. Prior to this position, Wellbrock ran the advanced technology lab, established evaluation criteria and set engineering guidelines for all backbone transport equipment as well as various positions within network operations. In addition to his more than 20 years at Verizon (1984-2001 and 2004-present), Wellbrock was responsible for product architecture within the U.S. optical networks group at Marconi and product planning at Qplus Networks with a specific focus on developing alternative modulation techniques.