Ciena Announces Reporting Date and Conference Call for Fiscal 2005 Fir

    Business Editors

    LINTHICUM, Md.--(BUSINESS WIRE)--Feb. 3, 2005--Ciena Corporation (NASDAQ:CIEN) will announce final results for its fiscal 2005 first quarter on Wednesday, February 23, 2005, via Business Wire before the open of the financial markets. The press release also will be available on Ciena's website at www.ciena.com.
    In conjunction with the announcement, Ciena's management will host a conference call beginning at 8:30 AM (Eastern) on February 23, 2005. Interested listeners may access the live web broadcast at www.ciena.com.

    Rebroadcast Information

    For those listeners unable to participate in the live web broadcast on Wednesday, February 23, 2005, an archived version of the conference call will be available shortly following the conclusion of the live call in the Investor Relations section of Ciena's website at: www.ciena.com.

    ABOUT CIENA

    Ciena Corporation is the network specialist, focused on expanding the possibilities for its customers' networks while reducing their cost of ownership. The company's systems, software and services target and cure specific network pain points so that telcos, cable operators, governments and enterprises can best exploit the new applications that are driving their businesses forward. For more information, visit www.ciena.com.

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CONTACT: Ciena Corporation Jessica Towns (Investor), 888-243-6223 ir@ciena.com or Nicole Anderson (Press), 410-694-5786 pr@ciena.com

KEYWORD: MARYLAND INDUSTRY KEYWORD: NETWORKING EARNINGS CONFERENCE CALLS SOURCE: Ciena Corporation

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