Mitel Announces Third Quarter Fiscal 2013 Financial Results Conference Call

Mitel Announces Third Quarter Fiscal 2013 Financial Results Conference Call

OTTAWA, Feb. 25, 2013 (GLOBE NEWSWIRE) -- Mitel® (Nasdaq:MITL) (TSX:MNW), a
leading provider of cloud and premises-based unified communications and
collaboration (UCC) solutions, today announced that it will release its third
quarter fiscal 2013 financial results after the market closes on Thursday,
February 28, 2013.

The company will host an investor conference call and live webcast at 5:00
p.m. EST (2:00 p.m. PST) on the same day. To access the conference call, dial
866-321-8231. Callers outside the US and Canada should dial 416-642-5213. The
webcast will be accessible on Mitel's investor relations website at
http://investor.mitel.com/.

A replay of the conference call will be available through Tuesday, March 5,
2013. To access the replay, please dial 888-203-1112 and enter pass code
6324700. Callers outside the US and Canada should dial 647-436-0148 and enter
pass code 6324700.

About Mitel

Mitel® (Nasdaq:MITL) (TSX:MNW) is a global provider of unified communications
and collaboration (UCC) software, solutions and services that enable
organizations to conduct business anywhere, over any medium with the device of
their choice. Through a single cloud-ready software stream, Mitel's Freedom
architecture provides customers in over 100 countries the flexibility and
simplicity needed to support today's dynamic work environment. For more
information visit www.mitel.com.

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Mitel and the Mitel logo are registered trademarks of Mitel Networks
Corporation.

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MITL-F

CONTACT: Mitel
         Amy MacLeod (media), 613-592-2122 x71245,
         amy_macleod@mitel.com
         Malcolm Brown (industry analysts),
         613-592-2122 x71246, malcolm_brown@mitel.com
         Cynthia Hiponia and Alice Kousoum (investor relations),
         613-592-2122 x71997, investorrelations@mitel.com

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