Carl is president and CEO of Calix and a member of the board of directors. Carl has over 25 years of experience in the networking and telecommunications industries. Prior to taking an active role with Calix in December, 2002, Carl was a member of the Calix board of directors. Before that, Carl was vice president of optical strategy and group vice president of optical networking for Cisco. Carl joined Cisco in 1999 as a result of the acquisition of Cerent Corporation, where he was president and CEO. Before Cerent, Carl was COO at Xircom (later acquired by Intel), where he was responsible for sales, marketing, development, and manufacturing of all Xircom products. Carl has also held executive management positions at Network Systems Corporation (later acquired by StorageTek) and at AT&T Paradyne. At Network Systems, Carl was the senior vice president and general manager for the Hyperchannel Networking Group, and at AT&T Paradyne he was vice president and general manager of the data networking products division. Carl sits on the board of directors for the Alliance for Telecommunications Industry Solutions (ATIS). Carl is an alumnus of Swarthmore College and serves on its board of trustees.