CORRECTING and REPLACING EXFO: Investor/Media Advisory - Financial Res

    Business Editors/High-Tech Writers
    CORRECTION...by EXFO Electro-Optical Engineering Inc.

    QUEBEC CITY, Canada--(BUSINESS WIRE)--March 15, 2005--In BW5348 issued March 2, 2005: Please replace the release dated March 2, 2005 with the following corrected version due to multiple revisions.

    The corrected release reads:

    EXFO: INVESTOR/MEDIA ADVISORY - FINANCIAL RESULTS FOR SECOND QUARTER OF FISCAL 2005, TUESDAY, MARCH 29, 2005, 5 P.M. EASTERN TIME

    EXFO Electro-Optical Engineering Inc. (NASDAQ:EXFO) (TSX:EXF.SV) announced today that it will release financial results for the second quarter of fiscal 2005 after the close of stock markets on Tuesday, March 29, 2005, and not on March 30, 2005, as previously announced.

    The press release will be followed by a conference call at 5 p.m. (Eastern time) to review EXFO's second-quarter results. To listen to the conference call and participate in the question period via telephone, dial 1-416-695-9716.

    Germain Lamonde, Chairman, President and CEO, and Pierre Plamondon, CA, Vice-President of Finance and Chief Financial Officer, will participate in the call. An audio replay of the conference call will be available until April 5, 2005. The replay number is 1-416-695-5275. The audio Webcast of the conference call will also be available on EXFO's Website at www.exfo.com, under the Investors section.

WHO: Germain Lamonde, EXFO's Chairman, President and CEO Pierre Plamondon, CA, Vice-President of Finance and CFO

WHAT: Second-quarter financial results for fiscal 2005

WHEN: Tuesday, March 29, 2005, 5 p.m. (Eastern time)

HOW: Via telephone (1-416-695-9716) and Webcast (www.exfo.com/investors)

    About EXFO

    EXFO is a recognized test and measurement expert in the global telecommunications industry through the design and manufacture of advanced and innovative solutions as well as best-in-class customer support. The Telecom Division, which represents the company's main business activity, offers fully integrated and complete test solutions to network service providers, system vendors and component manufacturers in approximately 70 countries. One of EXFO's strongest competitive advantages is its PC/Windows-based modular platforms that host a wide range of tests across optical, physical, data and network layers, while maximizing technology reuse across several market segments. The Photonics and Life Sciences Division mainly leverages core telecom technologies to offer value-added solutions in the life sciences and high-precision assembly sectors. For more information about EXFO, visit www.exfo.com.

    EXFO Electro-Optical Engineering Inc. (TSX:EXF.SV) (NASDAQ:EXFO)

--30--LC/na*

CONTACT: EXFO Electro-Optical Engineering Inc. Vance Oliver Manager, Investor Relations (418) 683-0913, Ext. 3733 vance.oliver@exfo.com

KEYWORD: NEW YORK INTERNATIONAL CANADA INDUSTRY KEYWORD: TELECOMMUNICATIONS EARNINGS CONFERENCE CALLS SOURCE: EXFO Electro-Optical Engineering Inc.

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