Report of Foreign Issuer

Washington, D.C. 20549
Pursuant to Rule 13a-16 or 15d-16 under
the Securities Exchange Act of 1934
For the month of September, 2009
Commission File Number: 000-49984
Mitel Networks Corporation
350 Legget Drive, Ottawa, Ontario K2K 2W7
(Address of Principal Executive Offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F þ           Form 40-F o
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): o
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): o
Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes o           No þ
If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82 —



Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
  Mitel Networks Corporation
  By:   /s/ Steven Spooner   
    Name:   Steven Spooner   
    Title:   Chief Financial Officer   
Date: September 29, 2009



The following is a list of Exhibits included as part of this Report on Form 6-K.
Description   Exhibit No.
Press Release dated September 24, 2009 announcing year-end financial results for fiscal year 2009


Exhibit 99.1
Mitel Reports Year-End Financial Results for Fiscal Year 2009
Company posts 6.2 percent revenue growth, demonstrates strong operating performance
OTTAWA, Ontario — Sept. 24, 2009 — Mitel ®, the trusted provider of unified communications solutions in conjunction with its Annual General Meeting, today announced year-end financial results for the fiscal year ended April 30, 2009 (all figures in U.S. dollars).
Mitel reported revenue in fiscal year 2009 of $735.1 million, an increase of 6.2 percent over the previous fiscal year. This was primarily due to growth in the U.S. market. Operating spending as a percentage of revenue declined by 3.4 percent, driven by cost reduction measures taken midway through fiscal year 2009. Earnings before interest, taxes, depreciation, and amortization (EBITDA*) was $85.3 million which represented an increase of $21 million or 33 percent over the previous fiscal year.
“In fiscal 2009, Mitel made proactive business decisions to ensure that the company remained strong in light of current and forecasted economic conditions,” says Don Smith, CEO, Mitel . “Our market share growth and industry position is a testament to the strength and commitment of our team.”
In fiscal 2009, Mitel incurred a net loss of $193.7 million. This net loss included a non-cash goodwill write-down of $284.9 million. In accordance with GAAP, goodwill is tested for impairment annually. This non-cash goodwill impairment charge does not affect the company’s liquidity, cash flows, or future operations. A $23 million charge for integration and restructuring activities also contributed to the net loss.
“Within a challenging economy Mitel continues to demonstrate its strength in the market with a solid five-year growth trend in both revenues and EBITDA*,” says Steve Spooner, CFO, Mitel . “ Mitel is well positioned for growth, and remains focused on delivering industry-leading solutions to meet the needs of our customers.”
(Amounts in millions $US)
    Year ended April 30  
    2009     2008  
  $ 735.1     $ 692.0  
Cost of Revenue
  $ 390.6     $ 367.9  
Gross Margin
  $ 344.5     $ 324.1  
Gross Margin %
    46.9 %     46.8 %
Operating Expenses:
Selling, General and Administrative
    248.5       246.6  
Research & Development
    60.1       62.6  
Special Charges and Merger Related Costs
    23.3       16.0  
Impairment of Goodwill
Loss on Sale of Manufacturing Operations
In-process Research and Development
Operating Loss
  $ (272.3 )   $ (7.1 )
as a % of revenue
    -37.0 %     -1.0 %
Interest Expense
    40.1       34.7  
FVA on Derivative Instruments
    (100.2 )     (61.9 )
Debt and Warrant Retirement Costs
Other Expense (Income)
    0.8       (1.6 )
Tax Recovery
    (19.3 )     (12.3 )
Net Income (Loss)
  $ (193.7 )   $ 13.2  
as a % of revenue
    -26.4 %     1.9 %




    Year ended April 30  
    2009     2008  
  $ 85.3     $ 64.2  
as a % of revenue
    11.6 %     9.3 %
*Reconciliation of EBITDA (Non-GAAP Measure)
Operating Loss
  $ (272.3 )   $ (7.1 )
Add: Impairment of Goodwill
Add: Amortization and Depreciation
    38.0       32.6  
Add: Special Charges and Merger Related Costs
    23.3       16.0  
Add: In-process Research and Development
Add: Other Items
    11.4       17.7  
  $ 85.3     $ 64.2  
About Mitel
Mitel delivers flexibility and simplicity in smart unified communications solutions and applications for organizations of all sizes. Combined with a full range of managed services that include voice and data network design and traffic provisioning, custom application development, and attractive financing options, Mitel is reinventing how successful organizations gain competitive advantage by easily collaborating and communicating over distance and time with customers, colleagues and partners. Mitel’s ( ) U.S. headquarters are in Phoenix, Arizona. Global headquarters are in Ottawa, Canada, with offices, partners, and resellers worldwide.
Forward Looking Information
Some of the statements in this press release are forward-looking statements that reflect our current views with respect to future events and financial performance. Statements that include the words “may,” “should,” “could,” “estimate,” “continue,” “expect,” “intend,” “plan,” “predict,” “potential,” “believe,” “project,” “anticipate” and similar statements of a forward-looking nature, or the negatives of those statements, identify forward-looking statements. Forward-looking statements are subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual events or results to differ from those expressed or implied by the forward-looking statements, including, without limitation, those identified under the heading “Forward Looking Information” in our most recent annual report on Form 20-F. That list is not exhaustive of the factors that may affect any of our forward-looking statements. In evaluating these statements, you should carefully consider the risks outlined under Item 3.D. “Key Information — Risk Factors” of our most recent annual report on Form 20-F. The forward-looking statements contained in this press release are based on the beliefs, expectations and opinions of management as of the date of this press release. We do not assume any obligation to update forward-looking statements to reflect actual results or assumptions if circumstances or management’s beliefs, expectations or opinions should change, unless otherwise required by law. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements.