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| FORWARD LOOKING AND DISCLOSURES SAFE HARBOR STATEMENT This document contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934. In some cases, you can identify forward-looking statements by terminology such as “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “should,” “plan,” “expect,” “predict,” “potential,” or the negative of these terms or other similar expressions. Forward-looking statements include, without limitation, Occam’s or Calix’s expectations concerning the timing and ability of the parties to consummate the proposed transaction, the outlook for their respective businesses, productivity, plans and goals for future operational improvements and capital investments, operational performance, future market conditions or economic performance and developments in the capital and credit markets and expected future financial performance, as well as any information concerning possible or assumed future results of operations of Calix and Occam as set forth in the sections of this presentation. Forward looking statements also include statements regarding the expected benefits of the proposed acquisition of Occam by Calix. These statements are not guarantees of future performance, involve risks, uncertainties and assumptions that are difficult to predict, and are based upon assumptions as to future events that may not prove accurate. The following factors, among others, could cause actual results to differ materially from those described in the forward-looking statements: failure of the Occam Networks stockholders to approve the proposed transaction; the challenges and costs of closing, integrating, restructuring and achieving anticipated synergies; the ability to retain key employees; and other economic, business, competitive, and/or regulatory factors affecting the businesses of Calix and Occam generally, including those set forth in the filings of Calix and Occam with the Securities and Exchange Commission, especially in the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of Calix’s Registration Statement on Form S-4 containing a proxy statement/prospectus and the other SEC filings of Occam and Calix. These forward-looking statements speak only as of the date hereof (December 20, 2010). Calix and Occam are under no obligation to (and expressly disclaim any such obligation to) update or alter their forward-looking statements whether as a result of new information, future events, or otherwise. IMPORTANT ADDITIONAL INFORMATION AND WHERE YOU CAN FIND IT Calix filed a Registration Statement on Form S-4 containing a proxy statement/prospectus and other documents concerning the proposed acquisition with the Securities and Exchange Commission (the “SEC”) and Occam Networks mailed its stockholders a definitive proxy statement/prospectus in connection with the transaction. Investors are urged to read the proxy statement/prospectus and any amendments thereto and other relevant documents filed with the SEC because they will contain important information. Security holders may currently obtain a free copy of the proxy statement/prospectus and will be able to obtain a free copy of any amendments thereto as well as the definitive proxy statement/prospectus and other documents filed by Calix and Occam with the SEC at the SEC’s web site at www.sec.gov. The proxy statement/prospectus, as amended from time to time, and other documents filed with the SEC may also be obtained for free by contacting Calix Investor Relations by e-mail at Carolyn.Bass@Calix.com, by telephone at 415-445-3232 or by mail at Investor Relations, Calix, Inc., 1035 N. McDowell Blvd., Petaluma, CA 94954 or by contacting Occam Investor Relations by e-mail at ir@occamnetworks.com, by telephone at 805-692-2957 or by mail at Occam Networks Investor Relations 6868 Cortona Drive, Santa Barbara, CA 93117. PARTICIPANTS IN THE ACQUISITION OF OCCAM NETWORKS Calix, Occam Networks, certain of their respective directors, executive officers, members of management and employees may, under the rules of the SEC, be deemed to be participants in the solicitation of proxies in favor of the proposed merger. Information regarding the persons who may be considered “participants” in the solicitation of proxies are set forth in Calix’s Registration Statement on Form S-4 containing a proxy statement/prospectus and the other SEC filings of Occam and Calix. Information regarding certain of these persons and their beneficial ownership of Calix common stock as of December 31, 2009 is also set forth in the prospectus filed by Calix on March 24, 2010 with the SEC. This document is available free of charge at the SEC’s web site at www.sec.gov or by going to Calix’s Investor Relations page on its corporate website at www.calix.com. Information concerning Occam’s directors and executive officers is set forth in Occam’s proxy statement for its 2010 Annual Meeting of Stockholders, which was filed with the SEC on April 8, 2010. This document is available free of charge at the SEC’s website at www.sec.gov or by going to Occam’s Investor Relations page on its corporate web site at www.occamnetworks.com. Additional information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of proxies in connection with the proposed merger, and a description of their direct and indirect interests in the proposed merger, which may differ from the interests of Calix stockholders or Occam stockholders generally is set forth in Calix’s Registration Statement on Form S-4 containing a proxy statement/prospectus and the other SEC filings of Occam and Calix. |