Calix competitors

Chad Engelgau serves as Acxiom’s Chief Executive Officer, providing strategic leadership to the organization, which focuses on helping brands use data, identity and technology solutions to better understand people and create value through every interaction.

Thomas R. Stanton joined ADTRAN in 1995 as vice president of marketing for the Carrier Networks (CN) Division. Since that time, he has held a number of senior management positions within the company including senior vice president and general manager of the CN Division. He was named ADTRAN’s chief executive officer in September 2005, and chairman of the board in 2007. Prior to joining ADTRAN, he served as vice president of marketing and engineering at Transcrypt International and held several senior management positions with E. F. Johnson Company. Stanton holds a Bachelor of Science degree in Computer Engineering from Auburn University.

Patrick Harshman has served as President and Chief Executive Officer of Harmonic since May 2006. As CEO Patrick has driven Harmonic’s strategic re-positioning as the worldwide leader in video delivery infrastructure, and overseen the rapid expansion of the company’s customer base, international presence, and video product portfolio. He joined Harmonic in 1994 and prior to being appointed CEO held several other executive management positions for the company. Patrick earned a Ph.D. in Electrical Engineering from the University of California, Berkeley and a B.S. in Electrical Engineering from the University of Florida.

Frank Plastina was appointed President and CEO of Tekelec in February 2006. He brings more than 19 years of senior executive and management experience in the telecommunications industry with companies including Proxim Corporation, Warburg Pincus LLC and Nortel Networks Corporation. Prior to joining Tekelec, Mr. Plastina was executive in residence at Warburg Pincus, where he was responsible for evaluating potential investments and providing executive support to its portfolio companies. Previously, Mr. Plastina was executive chairman of Proxim, a provider of Wi-Fi and broadband wireless access products. During Mr. Plastina’s 15-year career at Nortel, he held a series of executive-level positions in the company’s Wireless, Internet Service Providers, Signaling Solutions, Mergers & Acquisitions and Finance Groups. Most recently, he was president of Nortel’s multi-billion dollar Metro and Enterprise Networks business unit, in which he led the successful development and marketing of the company’s VoIP products to service providers, enterprises and government entities.