Acme Packet competitors

Dave Sipes serves as 8x8’s Chief Executive Officer. Sipes has an extensive twelve-year history in business management at RingCentral, most recently he was Chief Operating Officer where he led innovation, engineering, global sales, marketing, customer care, international operations, corporate development, and business development. Prior to that he oversaw a variety of key functions, including Chief Revenue Officer and, prior to that, Vice President of Corporate Development. Before joining RingCentral, Sipes was co-founder and COO of Branders.com, the nation’s largest online B2B seller of promotional items. Prior to that, Sipes worked in brand management at PepsiCo and was a principal at Booz Allen Hamilton in their marketing intensive group, providing strategic guidance to marketing and media companies such as Heinz Company, Callaway Golf, and Universal Pictures. Sipes also serves on the board of directors of PandaDoc, an all-in-one document automation company that streamlines the process of creating, approving, and eSigning proposals, quotes, and contracts. Sipes holds a master’s degree in business administration with an emphasis in marketing from Kellogg School of Management at Northwestern University, as well as a bachelor’s degree in business from the University of California, Berkeley.

Mr. Russo has served as Calix’s president and chief executive officer since December 2002. As Calix’s president and chief executive officer, Mr. Russo brings substantial expertise and knowledge regarding our business strategy, markets and operations to Calix’s board of directors. He also brings to the Board an extensive background in the telecommunications and networking technology industries. From November 1999 to May 2002, Mr. Russo served as vice president of optical strategy and group vice president of optical networking of Cisco Systems, Inc. From April 1998 to October 1999, Mr. Russo served as president and chief executive officer of Cerent Corporation, which was acquired by Cisco. From April 1995 to April 1998, Mr. Russo served in various capacities, including as chief operating officer, at Xircom, Inc., which was acquired by Intel Corporation. Previously, Mr. Russo served as senior vice president and general manager for the hyperchannel networking group of Network Systems Corporation and as vice president and general manager of the data networking products division of AT&T Paradyne Corporation. Mr. Russo served on the board of directors of Vital Network Services, Inc., a privately-held company delivering network lifecycle services, and Xirrus, Inc., a privately-held company providing products that enable high-performance wireless networks. Mr. Russo attended Swarthmore College and previously served on its board of managers.

Gary B. Smith is a British-American executive, currently serving as the Chief Executive Officer of Ciena, an American telecommunications networking multinational.

Mr. Meyercord serves as President and Chief Executive Officer of Extreme. He joined our Board of Directors as an independent director in October 2009 and has served as Chairman since March 2011. Prior to assuming an operating role at Extreme, Mr. Meyercord was Chief Executive Officer and Director at Critical Alert Systems, LLC, a software-driven, healthcare information technology company, that he co-founded in July of 2010. Previously, Mr. Meyercord served as CEO, President and Director of both Cavalier Telephone & TV, a privately held voice, video and data services company with an extensive fiber network; and Talk America, Inc., a publicly traded company that provided phone and internet services to consumers and small businesses throughout the U.S. Mr. Meyercord was also a Vice President in the investment banking division of Salomon Brothers (now Citigroup). He previously served on the board of Tollgrade Communications, Inc.

Ken Xie is an American billionaire businessman who founded Systems Integration Solutions (SIS), NetScreen, and Fortinet. He is CEO of Fortinet, a cybersecurity firm based in Silicon Valley. Xie was previously the CEO of NetScreen, which was acquired by Juniper Networks for $4 billion in 2004. He built the first ASIC-based firewall/VPN appliance in 1996.

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.

Rami Rahim is Chief Executive Officer of Juniper Networks and a member of the company's Board of Directors. Rahim was appointed CEO in November 2014. Rahim began his Juniper career in early 1997, as employee No. 32, and worked as an engineer on Juniper's first breakthrough product, the M40 core router. Rahim has progressed through a series of technical and leadership roles at Juniper, applying his engineering acumen to the design and development of Juniper's industry-leading product portfolio. He most recently served as Executive Vice President and General Manager of the Juniper Development and Innovation (JDI) organization, overseeing the company's entire product and technology portfolio. His responsibilities included driving strategy, development and business growth for routing, switching, security, silicon technology, and the Junos operating system. Other leadership positions held over the years include: Executive Vice President and General Manager of Platform Systems Division for routing and switching, Senior Vice President of the Edge and Aggregation Business Unit (EABU), and Vice President and General Manager of EABU. Rahim earned a Bachelor of Science degree in electrical engineering from the University of Toronto and a Master of Science degree in electrical engineering from Stanford University. He completed an intensive six-week executive program at Stanford University's Graduate School of Business. Rahim holds 17 U.S. Patents in networking technologies and is a member of IEEE.