Mitel Confirms Preliminary Third Quarter Fiscal 2013 Results

February 11, 2013

Mitel® (Nasdaq:MITL) (TSX:MNW), a leading provider of cloud and premises-based unified communications software solutions, today announced that for the third quarter of fiscal 2013, ended January 31, 2013, revenue will be approximately $142M, which is within the guidance range provided during the company's second quarter fiscal 2013 earnings announcement on November 29, 2012.

The company also confirmed that preliminary gross margin is within the guidance range previously provided, and that non-GAAP operating expenses for the quarter are expected to be 42%-43% of revenue, which is favorable to previously provided guidance.

Preliminary third quarter results are being disclosed in conjunction with Mitel's ongoing market discussions with potential lenders related to the refinancing of its existing senior secured credit facilities. Mitel routinely monitors the credit markets to evaluate the merits of refinancing its senior secured credit facilities and from time to time explores available options.

In addition, Mitel announced that Philip Keenan, Executive Vice President of Sales for North America, is leaving the company. Mitel President and CEO Richard McBee will assume responsibility for the North American sales organization on an interim basis until a permanent replacement is identified.

Preliminary and Unaudited Results

The financial results presented above are preliminary and subject to completion. Mitel's expectations with respect to these unaudited results are based upon management estimates and information available at this time. As a result, these preliminary results may be different from the actual results that will be reflected in Mitel's consolidated financial statements for the quarter when they are released.

This release includes references to non-GAAP financial measures. Non-GAAP measures are among the primary indicators management uses as a basis for our planning and forecasting of future periods. Investors are cautioned that non-GAAP financial measures should not be relied upon as a substitute for financial measures prepared in accordance with generally accepted accounting principles.

About Mitel

A global market leader in business communications powering more than two billion business connections, helps businesses and service providers connect, collaborate and provide innovative services to their customers. Our innovation and communications experts serve more than 70 million business users in more than 100 countries. For more information, go to www.mitel.com and follow us on Twitter @Mitel.

Mitel is the registered trademark of Mitel Networks Corporation

All other trademarks are the property of their respective owners

Información de contacto

Sandrine Quinton, Media

Tel: +33 (0)130-964-301

Email: sandrine.quinton@mitel.com

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