The full corporate name, jurisdiction of incorporation and registered and beneficial ownership of the issued and outstanding shares of each direct and indirect Subsidiary is as follows:
| | | | |
Name of Subsidiary | | Jurisdiction of Incorporation | | Ownership of Securities |
| Mitel U.S. Holdings, Inc. | | Delaware | | Wholly-owned by the Corporation |
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| Mitel (Delaware), Inc. | | Delaware | | Wholly-owned by Mitel U.S. Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| Mitel Cloud Services, Inc. | | Texas | | Wholly-owned by Mitel (Delaware), Inc., which is in turn wholly-owned by Mitel U.S. Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| Mitel Communications Inc. | | Delaware | | Wholly-owned by Mitel (Delaware), Inc., which is in turn wholly-owned by Mitel U.S. Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| Mitel Technologies, Inc. | | Arizona | | Wholly-owned by Mitel (Delaware), Inc., which is in turn wholly-owned by Mitel U.S. Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| Mitel Leasing, Inc. | | Arizona | | Wholly-owned by Mitel (Delaware), Inc., which is in turn wholly-owned by Mitel U.S. Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| Mitel Business Systems, Inc. | | Arizona | | Wholly-owned by Mitel (Delaware), Inc., which is in turn wholly-owned by Mitel U.S. Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| Mitel Networks, Inc. | | Delaware | | Wholly-owned by Mitel (Delaware), Inc., which is in turn wholly-owned by Mitel US Holdings, Inc. which is in turn wholly-owned by the Corporation |
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| Mitel Europe Limited | | United Kingdom | | Wholly-owned by the Corporation |
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| Mitel Networks Holdings Limited | | United Kingdom | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel Networks Limited | | United Kingdom | | Wholly-owned by Mitel Networks Holdings Limited, which is in turn wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel Deutschland GmbH | | Germany | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| DeTeWe Communications GmbH | | Germany | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel France SAS | | France | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel Italia SpA | | Italy | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel Schweiz AG | | Switzerland | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Aastra Telecom Europe A/S | | Denmark | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel Spain, S.L. | | Spain | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
| | | | |
Name of Subsidiary | | Jurisdiction of Incorporation | | Ownership of Securities |
| Mitel Belgium SA | | Belgium | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
| | |
| Mitel Lease SA | | Belgium | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel Sweden AB | | Sweden | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Telepo Limited | | United Kingdom | | Wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Telepo Holding AB | | Sweden | | Wholly-owned by Telepo Limited, which is in turn wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel Communications AB | | Sweden | | Wholly-owned by Telepo Holding AB, which is in turn wholly-owned by Telepo Limited, which is in turn wholly-owned by Mitel Europe Limited, which is in turn wholly-owned by the Corporation |
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| Mitel do Brasil Comercio e Servicos de Telecomunicacoes Ltda. | | Brasil | | Wholly-owned by the Corporation |
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| Mitel Incorporated Mexico S.A. de C.V. | | Mexico | | Wholly-owned by the Corporation |
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| Mitel Mobility Inc. | | Delaware | | Wholly-owned by Mitel US Holdings, Inc., which is wholly-owned by the Corporation |
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| Mitel Mobility UK Limited | | United Kingdom | | Wholly-owned by Mavenir Systems Holdings Limited, which is wholly-owned by Mitel Mobility Inc. which is wholly-owned by Mitel US Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| TigerTMS Limited | | United Kingdom | | Wholly-owned by Connected Guests Limited, which is wholly-owned by Connected Hotels Limited, which is wholly-owned by Mitel Europe Limited, which is wholly-owned by the Corporation |
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| Mitel Communication Technologies (Beijing) Company Limited | | China | | Wholly-owned by Mitel (Far East) Limited, which is wholly-owned by the Corporation |
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| Mitel Mobility Co., Ltd (Shanghai) | | China | | Wholly-owned by Mitel Mobility Inc. which is wholly-owned by Mitel US Holdings, Inc., which is in turn wholly-owned by the Corporation |
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| Mavenir Systems Private Limited | | India | | Wholly-owned by Mitel Mobility Inc. which is wholly-owned by Mitel US Holdings, Inc., which is in turn wholly-owned by the Corporation |
