OCTOBER 9, 2007, PETALUMA, CALIFORNIA—Calix, the largest telecom solution supplier focused solely on access, today announced the addition of Michael Everett to the company's board of directors. Everett is currently a financial executive at Cisco Systems, Inc. and was chief financial officer of WebEx Communications, Inc., the web collaboration leader recently acquired by Cisco for $3.2 billion. Everett has over 30 years of financial, legal, and general management experience, including two separate postings in China.

According to Calix president and CEO Carl Russo, "Michael adds tremendous experience to our board, especially in the areas of regulatory and financial compliance. And with his extensive experience guiding a number of public and private companies, Michael will be a valuable board addition."

"Calix is truly unique among large, private, high-tech companies," stated Everett. "Employing public company disciplines, procedures, and practices, Calix is well positioned to continue its growth while maintaining a strong focus on technical innovation and customer responsiveness."

Prior to joining WebEx, Everett was CFO of several public and private companies, including Netro Corporation, a broadband wireless equipment manufacturer that he led through a successful IPO in 1999, and Raychem Corporation, a Fortune 500 telecommunications and electronic components supplier. Before joining Raychem in 1987, he practiced securities law as a partner at Heller, Ehrman, White & McAuliffe. Michael holds a BA from Dartmouth College and a JD from the University of Pennsylvania Law School.

About Calix
Calix is the largest telecom equipment supplier focused solely on access solutions for broadband service delivery. Service providers deploy Calix access systems to enable a rich set of information, communication, and entertainment services and to expand their revenue base beyond connectivity. Calix access innovation helps service providers transform their networks from circuit to packet, narrowband to broadband, and copper to fiber. Calix has deployed millions of ports and tens of thousand of systems into hundreds of service provider networks throughout North America. For more information, visit the Calix website at www.calix.com.

This shareholder release may contain forward-looking statements that are based upon management's current expectations and are inherently uncertain. Forward-looking statements are based upon information available to us as of the date of this release and we assume no obligation to revise or update any such forward looking statement to reflect any event or circumstance after the date of this release. Actual results and the timing of events could differ materially from current expectations.

For additional information contact:
Jeannette Bitz
Engage PR
510-748-8200 x207
jbitz@engagepr.com