Business Wire (Sept. 8) -- Polycom, Inc., a global leader in helping organizations achieve new levels of teamwork, efficiency and productivity by unleashing the power of human collaboration, and Siris Capital Group, LLC, announced that Mary McDowell will succeed Peter Leav as Polycom’s CEO effective and contingent on the closing of the merger of Polycom with an affiliate of Siris Capital. McDowell earned her bachelor's degree in computer science from Illinois in 1986.