Document:

EX-10.1

 Exhibit 10.1 
 EXECUTION VERSION 
 MITEL NETWORKS CORPORATION 

AND 

AASTRA TECHNOLOGIES LIMITED 
  

 
 ARRANGEMENT
AGREEMENT 
  
  

Dated November 10, 2013 

 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
	 Article 1 INTERPRETATION
	  	 	1	  
			
	 1.1
	 	Definitions	  	 	1	  
	 1.2
	 	Interpretation Not Affected by Headings	  	 	14	  
	 1.3
	 	Number and Gender	  	 	15	  
	 1.4
	 	Date for Any Action	  	 	15	  
	 1.5
	 	Currency	  	 	15	  
	 1.6
	 	Accounting Matters	  	 	15	  
	 1.7
	 	Knowledge	  	 	15	  
	 1.8
	 	Schedules	  	 	15	  
		
	 Article 2 THE ARRANGEMENT
	  	 	16	  
			
	 2.1
	 	Arrangement	  	 	16	  
	 2.2
	 	Mitel Approval	  	 	16	  
	 2.3
	 	Aastra Approval	  	 	16	  
	 2.4
	 	Obligations of Mitel	  	 	16	  
	 2.5
	 	Interim Order	  	 	17	  
	 2.6
	 	Aastra Meeting	  	 	18	  
	 2.7
	 	Aastra Circular	  	 	19	  
	 2.8
	 	Aastra Shareholder Rights Plan	  	 	20	  
	 2.9
	 	Final Order	  	 	21	  
	 2.10
	 	Court Proceedings	  	 	21	  
	 2.11
	 	Articles of Arrangement and Effective Date	  	 	21	  
	 2.12
	 	Payment of Consideration	  	 	22	  
	 2.13
	 	Announcement and Shareholder Communications	  	 	22	  
	 2.14
	 	U.S. Securities Law Matters	  	 	23	  
		
	 Article 3 REPRESENTATIONS AND WARRANTIES OF AASTRA
	  	 	24	  
			
	 3.1
	 	Representations and Warranties	  	 	24	  
	 3.2
	 	Survival of Representations and Warranties	  	 	39	  
		
	 Article 4 REPRESENTATIONS AND WARRANTIES OF MITEL
	  	 	40	  
			
	 4.1
	 	Representations and Warranties	  	 	40	  
	 4.2
	 	Survival of Representations and Warranties	  	 	56	  
		
	 Article 5 COVENANTS
	  	 	56	  
			
	 5.1
	 	Covenants of Aastra Regarding the Conduct of Business	  	 	56	  
	 5.2
	 	Covenants of Mitel Regarding the Conduct of Business	  	 	60	  
	 5.3
	 	Mutual Covenants of the Parties Relating to the Arrangement	  	 	64	  
	 5.4
	 	Supplemental Listing Application	  	 	66	  
	 5.5
	 	Pre-Arrangement Reorganization	  	 	66	  
	 5.6
	 	Board of Directors of Mitel	  	 	67	  
	 5.7
	 	Financing	  	 	67	  
	 5.8
	 	Financing Assistance	  	 	68	  
	 5.9
	 	Regulatory Approvals	  	 	70	  
	 5.10
	 	Non-Solicitation	  	 	71	  
	 5.11
	 	Access to Information; Confidentiality	  	 	75	  
	 5.12
	 	Insurance and Indemnification	  	 	76	  

 TABLE OF CONTENTS 
  

							
	 	 	 	  	Page	 
	 5.13
	 	Equity-Based Compensation Plans	  	 	76	  
	 5.14
	 	Section 85 Elections	  	 	77	  
	 5.15
	 	Fees and Expenses	  	 	77	  
		
	 Article 6 CONDITIONS
	  	 	77	  
			
	 6.1
	 	Mutual Conditions Precedent	  	 	77	  
	 6.2
	 	Additional Conditions Precedent to the Obligations of Mitel	  	 	78	  
	 6.3
	 	Conditions Precedent to the Obligations of Aastra	  	 	79	  
	 6.4
	 	Satisfaction of Conditions	  	 	79	  
		
	 Article 7 TERM, TERMINATION, AMENDMENT AND WAIVER
	  	 	79	  
			
	 7.1
	 	Term	  	 	79	  
	 7.2
	 	Termination	  	 	80	  
	 7.3
	 	Expenses and Termination Fees	  	 	81	  
	 7.4
	 	Amendment	  	 	86	  
	 7.5
	 	Waiver	  	 	86	  
		
	 Article 8 GENERAL PROVISIONS
	  	 	86	  
			
	 8.1
	 	Notices	  	 	86	  
	 8.2
	 	Governing Law	  	 	88	  
	 8.3
	 	Injunctive Relief	  	 	88	  
	 8.4
	 	Time of Essence	  	 	88	  
	 8.5
	 	Entire Agreement, Binding Effect and Assignment	  	 	88	  
	 8.6
	 	No Liability	  	 	89	  
	 8.7
	 	Severability	  	 	89	  
	 8.8
	 	Counterparts, Execution	  	 	90	  
	 8.9
	 	Waiver of Jury Trial	  	 	90	  

 ARRANGEMENT AGREEMENT 

THIS ARRANGEMENT AGREEMENT dated November 10, 2013  
 BETWEEN: 
 Mitel Networks Corporation, a corporation existing under
the laws of Canada with its head office in the City of Ottawa, in the Province of Ontario (“Mitel”) 
 - and -

 Aastra Technologies Limited, a corporation existing under the laws of Canada with its head office in the City of
Vaughan, in the Province of Ontario (“Aastra”) 
 RECITALS: 

 

	A.	The board of directors of each of Mitel and Aastra has determined that it would be in the best interests of Mitel and Aastra, as applicable, to combine their respective
businesses; 

  

	B.	This combination will be effected by way of a plan of arrangement under the provisions of the Canada Business Corporations Act; 

 

	C.	Upon the effectiveness of the plan of arrangement, common shareholders of Aastra will receive 3.6 common shares of Mitel and $6.52 in cash for each Aastra common share
held; 

  

	D.	The parties hereto have entered into this Agreement to provide for the matters referred to in the foregoing recitals and for other matters related to the transaction
herein provided for; 

 THEREFORE, the Parties agree as follows: 

ARTICLE 1 

INTERPRETATION 
  

	1.1	Definitions 

 Whenever used in this
Agreement, the following words and terms have the meanings set out below: 
 “Aastra 2006 Option Plan” means the stock option
plan of Aastra adopted by the Aastra shareholders on May 23, 2006, as amended; 
 “Aastra Balance Sheet” has the
meaning ascribed thereto in Section 3.1(m); 
 “Aastra Benefit Plans” means any pension or retirement income plans or
other employee compensation arrangement (other than equity- or security-based compensation arrangements), or benefit plans, agreements, policies, programs, arrangements or practices, whether written or oral, which are maintained by or binding upon
Aastra or any of its Subsidiaries for which Aastra or its Subsidiaries could have any liability or contingent liability, or pursuant to which payments are 

 
made, or benefits are provided to, or an entitlement to payments or benefits may arise with respect to any of its employees or former employees, directors or officers, individuals working on
contract with Aastra or other individuals providing services to Aastra of a kind normally provided by employees (or any spouses, dependants, survivors or beneficiaries of any such persons), excluding Statutory Plans; 

“Aastra Board” means the board of directors of Aastra as the same is constituted from time to time; 

“Aastra Change in Recommendation” has the meaning ascribed thereto in Section 7.2(a)(iii)(A); 

“Aastra Circular” means the notice of the Aastra Meeting and accompanying management information circular, including all
schedules, appendices and exhibits thereto and enclosures therewith, to be sent to the Aastra Shareholders in connection with the Aastra Meeting, as amended, supplemented or otherwise modified from time to time; 

“Aastra Data Room” means the secure website at www.rrdvenue.com as of 12:00 p.m. (Toronto time) on November 10, 2013; 

 “Aastra DSU Plan” means the deferred share unit plan for independent directors and senior officers of Aastra
dated July 17, 2012;  
 “Aastra DSUs” means deferred share units issued under the Aastra DSU Plan;

 “Aastra Employee Share Plans” means the Aastra 2006 Option Plan, Aastra DSU Plan and Aastra SAR Plan; 

“Aastra Expense Fee” has the meaning ascribed thereto in Section 7.3(b)(iv); 

“Aastra Expense Fee Event” has the meaning ascribed thereto in Section 7.3(d); 

“Aastra Information Technology” means computer programs (including source code, object code and data) and related documentation
and materials in each case as are necessary for operating the relevant party’s business and other information technology systems owned, leased or held for use in or relating to the business of Aastra or any of its Subsidiaries;

 “Aastra Intellectual Property” means all Intellectual Property Rights that are used or held for use by Aastra or
any of its Subsidiaries; 
 “Aastra Licensed Intellectual Property” means all Aastra Intellectual Property which
is used by Aastra or any of its Subsidiaries under license from a third Person; 
 “Aastra Licensed Technology”
means all Aastra Technology which is used by Aastra or any of its Subsidiaries under license from a third Person; 
 “Aastra
Material Adverse Effect” means any event, change, occurrence, effect or state of facts, that, individually or in the aggregate with other events, changes, occurrences, effects or states of facts is, or would reasonably be expected to be,
material and adverse to the business, operations, 

  
 - 2 -

 
results of operations, capital, property, assets, liabilities, obligations (whether absolute, accrued, conditional or otherwise) or financial condition of Aastra and its Subsidiaries taken as a
whole except to the extent of any fact or state of facts, event, change, occurrence or effect resulting from or arising in connection with: 
  

	 	(a)	any change or development affecting the industries in which Aastra and its Subsidiaries operate; 

 

	 	(b)	any change or development in global, national or regional political conditions (including any act of terrorism or any outbreak of hostilities or war or any escalation
or worsening thereof), any natural disaster or in general economic, business or regulatory conditions or in global financial, credit, currency or securities markets; 

 

	 	(c)	any adoption, proposed implementation or change in applicable Law or any interpretation thereof by any Governmental Entity; 

 

	 	(d)	any change in IFRS or changes in applicable regulatory accounting requirements applicable to the industries in which it conducts business; 

 

	 	(e)	the announcement of the entering into of this Agreement and the transactions contemplated herein; 

 

	 	(f)	actions or inactions expressly required by this Agreement or that are taken with the prior written consent of the applicable Party; 

 

	 	(g)	any change in the market price or trading volume of any securities of Aastra (it being understood, without limiting the applicability of paragraphs (a) through
(f), that the causes underlying such changes in market price or trading volume may be taken into account in determining whether an Aastra Material Adverse Effect has occurred), or any suspension of trading in securities generally or on any
securities exchange on which any securities of Aastra trades; or 

  

	 	(h)	the failure, in and of itself, of Aastra to meet any internal or public projections, forecasts or estimates of revenues or earnings (it being understood, without
limiting the applicability of paragraphs (a) through (f), that the causes underlying such failure may be taken into account in determining whether an Aastra Material Adverse Effect has occurred); 

provided, however, that any such event, change, occurrence, effect or state of facts referred to in clauses (a), (b), (c) or (d) above does not
primarily relate only to (or have the effect of primarily relating only to) Aastra and its Subsidiaries, taken as a whole, or disproportionately adversely affects Aastra and its Subsidiaries, taken as a whole, compared to other companies of similar
size operating in the industries in which Aastra and its Subsidiaries operate; references in this Agreement to dollar amounts are not intended to be and shall not be deemed to be illustrative or interpretative for purposes of determining whether an
Aastra Material Adverse Effect has occurred; 

  
 - 3 -

 “Aastra Meeting” means the special meeting of Aastra Shareholders, including any
adjournment or postponement thereof, to be called and held in accordance with the Interim Order to consider the Arrangement Resolution; 

“Aastra Optionholders” means the holders of Aastra Options; 
 “Aastra Options” means the outstanding options to purchase Aastra Shares granted under the Aastra 2006 Option Plan;  

“Aastra Owned Intellectual Property” means all Aastra Intellectual Property which is not Aastra Licensed Intellectual
Property; 
 “Aastra Owned Technology” means all Aastra Technology which is not Aastra Licensed Technology;

 “Aastra Public Documents” means all forms, reports, schedules, statements and other documents filed by Aastra
(and for the purposes of Section 3.1(k) those required to be filed) since December 31, 2011, with all applicable Governmental Entities which are publicly filed (and for the purposes of Section 3.1(k) those required to be publicly
filed); 
 “Aastra SAR Plan” means Aastra’s share appreciation rights plan dated July 28, 2010;

 “Aastra SARs” means stock appreciation rights issued under the Aastra SAR Plan; 

“Aastra Shareholder Rights Plan” means the amended and restated shareholder rights plan agreement dated May 3, 2010 between
Aastra and Computershare Investor Services Inc., as rights agent; 
 “Aastra Shareholders” means the holders of
Aastra Shares; 
 “Aastra Shareholder Approval” means the approval of the Arrangement Resolution by the Aastra
Shareholders at the Aastra Meeting in accordance with Section 2.5(c); 
 “Aastra Shares” means the common shares
in the authorized share capital of Aastra; 
 “Aastra Technical Information” means all trade secrets,
confidential information and other proprietary know-how and related technical knowledge owned, used or held for use in or relating to the business of Aastra or any of its Subsidiaries, including documented research, forecasts, studies, marketing
plans, budgets, market data, developmental, demonstration or engineering work, information that can be used to define a design or process or procure, produce, support or operate material and equipment, methods of production and procedures, all
formulas and designs and drawings, blueprints, patterns, plans, flow charts, parts lists, manuals and records, specifications, and test data; 
 “Aastra Technology” means all Aastra Intellectual Property and Aastra Technical Information and Aastra Information Technology; 

“Aastra Termination Fee” has the meaning ascribed thereto in Section 7.3(b)(v); 

  
 - 4 -

 “Aastra Termination Fee Event” has the meaning ascribed thereto in Section
7.3(c); 
 “Acquisition Proposal” means, other than the transactions contemplated by this Agreement and other
than any transaction involving only a Party and/or one or more of its wholly-owned Subsidiaries, any offer, proposal or inquiry from any Person or group of Persons, whether or not in writing and whether or not delivered to the shareholders of a
Party, after the date hereof relating to: (a) any acquisition or purchase, direct or indirect, through one or more transactions, of (i) the assets of that Party and/or one or more of its Subsidiaries that, individually or in the aggregate,
constitute 20% or more of the consolidated assets of that Party and its Subsidiaries, taken as a whole, or which contribute 20% or more of the consolidated revenue of a Party and its Subsidiaries, taken as a whole, or (ii) 20% or more of any
voting or equity securities of that Party or any one or more of its Subsidiaries that, individually or in the aggregate, contribute 20% or more of the consolidated revenues or constitute 20% or more of the consolidated assets of that Party and its
Subsidiaries, taken as a whole; (b) any take-over bid, tender offer or exchange offer that, if consummated, would result in such Person or group of Persons beneficially owning 20% or more of any class of voting or equity securities of that
Party; or (c) a plan of arrangement, merger, amalgamation, consolidation, share exchange, share reclassification, business combination, reorganization, recapitalization, liquidation, dissolution or other similar transaction involving that Party
and/or any of its Subsidiaries whose assets or revenues, individually or in the aggregate, constitute 20% or more of the consolidated assets or revenues, as applicable, of that Party and its Subsidiaries, taken as a whole; 

“affiliate” has the meaning ascribed thereto in the NI 45-106; 
 “Agents” means, collectively, Jefferies Finance LLC, TD Securities (USA) LLC and the Toronto-Dominion Bank and their respective successors and assigns; 

“Agreement” means this arrangement agreement, including all schedules annexed hereto, as the same may be amended, supplemented or
otherwise modified from time to time in accordance with the terms hereof; 
 “Arrangement” means the arrangement
of Aastra under Section 192 of the CBCA on the terms and subject to the conditions set out in the Plan of Arrangement, subject to any amendments or variations thereto made in accordance with Section 7.4 hereof or the Plan of Arrangement or
made at the direction of the Court in the Final Order (provided that any such amendment or variation is acceptable to both Aastra and Mitel, each acting reasonably); 
 “Arrangement Resolution” means the special resolution of the Aastra Shareholders approving the Arrangement which is to be considered at the Aastra Meeting substantially in the form
of Schedule B hereto; 
 “Articles of Arrangement” means the articles of arrangement of Aastra in respect of the
Arrangement to be filed with the Director after the Final Order is made, which shall be in form and content satisfactory to Aastra and Mitel, each acting reasonably; 
 “Authorization” means any authorization, order, permit, approval, grant, licence, registration, consent, right, notification, condition, franchise, privilege, certificate,
judgment, writ, injunction, award, determination, direction, decision, decree, by-law, rule or regulation, of, from or required by any Governmental Entity; 

  
 - 5 -

 “Business Day” means any day, other than a Saturday, a Sunday or a statutory or
civic holiday in the Province of Ontario; 
 “Canadian Securities Laws” means the Securities Act, together with
all other applicable securities Laws, rules and regulations and published policies thereunder or under the securities laws of any other province or territory of Canada as now in effect and as they may be promulgated or amended from time to time;

 “CBCA” means the Canada Business Corporations Act and the regulations made thereunder, as
now in effect and as they may be promulgated or amended from time to time; 
 “Certificate of Arrangement” means
the certificate of arrangement to be issued by the Director pursuant to Section 192(7) of the CBCA in respect of the Articles of Arrangement; 
 “Confidentiality Agreement” means the mutual confidentiality agreement between Mitel and Aastra dated September 17, 2013 pursuant to which each of Mitel and Aastra has
provided confidential information about its business to the other;  
 “Consideration” means the consideration to
be received by the Aastra Shareholders pursuant to the Plan of Arrangement as consideration for their Aastra Shares, consisting of 3.6 Mitel Shares and $6.52 in cash for each Aastra Share held; 

“Consideration Shares” means the Mitel Shares to be issued pursuant to the Arrangement; 

“Contract” means any contract, agreement, license, franchise, lease, arrangement, commitment, understanding, joint venture,
partnership or other right or obligation (written or oral) to which a Party or any of its Subsidiaries is a party or by which it or any of its Subsidiaries is bound or to which any of their respective properties or assets is subject;

 “Court” means the Ontario Superior Court of Justice (Commercial List); 

“Depositary” means the depositary as will be set out in the Letter of Transmittal; 

“Director” means the Director appointed pursuant to Section 260 of the CBCA; 

“Dissent Rights” means the rights of dissent in respect of the Arrangement described in the Plan of Arrangement;

 “Effective Date” means the date shown on the Certificate of Arrangement giving effect to the Arrangement; 

 “Effective Time” means 12:01 a.m. (Toronto time) on the Effective Date, or such other time as the Parties agree
to in writing before the Effective Date; 
 “Eligible Holder” means a beneficial holder of Aastra Shares that is:
(i) a resident of Canada for purposes of the Tax Act and not exempt from tax under Part I of the Tax Act; or (ii) a partnership, any member of which is a resident of Canada for purposes of the Tax Act and not exempt from tax under Part I
of the Tax Act; 

  
 - 6 -

 “Fee” has the meaning ascribed thereto in Section 7.3(b)(i); 

“Final Order” means the final order of the Court pursuant to Section 192 of the CBCA, in a form acceptable to Aastra and
Mitel, each acting reasonably, approving the Arrangement, as such order may be amended by the Court (with the consent of both Aastra and Mitel, each acting reasonably) at any time prior to the Effective Date or, if appealed, then, unless such appeal
is withdrawn or denied, as affirmed or as amended (provided that any such amendment is acceptable to both Aastra and Mitel, each acting reasonably) on appeal; 
 “Financing Sources” shall mean each Person (including, without limitation, each Agent and arranger) that has committed to provide or otherwise entered into agreements in connection
with the Mitel Commitment Letter or other financings in connection with the transactions contemplated hereby, including (without limitation) any commitment letters, engagement letters, credit agreements, loan agreements or indentures relating
thereto, together with each affiliate thereof and each officer, director, employee, partner, controlling person, advisor, attorney, agent and representative of each such Person or affiliate and their respective successors and assigns;

 “French Determination” means the approval of the French Ministry of Finance and Economy pursuant to articles L
151-2 et seq of the French monetary and financial code; 
 “Governmental Entity” means: (a) any
multinational, federal, provincial, territorial, state, regional, municipal, local or other government, governmental or public department, central bank, court, tribunal, arbitral body, commission, board, ministry, bureau or agency, domestic or
foreign; (b) any stock exchange, including TSX and NASDAQ; (c) any subdivision, agent, commission, board or authority of any of the foregoing; or (d) any quasi-governmental or private body, including any tribunal, commission,
regulatory agency or self-regulatory organization, exercising any regulatory, antitrust, foreign investment, expropriation or taxing authority under or for the account of any of the foregoing; 

“IFRS” means International Financial Reporting Standards; 
 “including” means including without limitation, and “include” and “includes” have a corresponding meaning; 

“Intellectual Property Rights” means: (a) all Canadian, United States, international and foreign patents and applications therefor
and all reissues, divisions, divisionals, renewals, extensions, provisionals, continuations and continuations-in-part thereof, and all patents, applications, documents and filings claiming priority thereto or serving as a basis for priority thereof
and all inventions (whether or not patentable), invention disclosures, improvements; (b) all copyrights, copyright registrations and applications therefor, and all other rights corresponding thereto throughout the world; (c) all industrial
designs and any registrations and applications therefor throughout the world; (d) all trade-marks, service marks and certification marks (whether or not registered), domain names, trade dress, trade-names, business names and other indicia of
origin (including any registration and applications to register any of the foregoing in any jurisdiction and any extensions, modifications or renewals thereof) and including the goodwill associated with any of the foregoing throughout the world;
(e) all moral and economic rights of authors and inventors, however denominated, throughout the world; and (f) any similar or equivalent rights to any of the foregoing anywhere in the world; 

  
 - 7 -

 “Interim Order” means the interim order of the Court contemplated by
Section 2.5 of this Agreement and made pursuant to Section 192 of the CBCA, in a form acceptable to Aastra and Mitel, each acting reasonably, providing for, among other things, the calling and holding of the Aastra Meeting, as the same may
be amended by the Court with the consent of Aastra and Mitel, each acting reasonably; 
 “Investment Canada
Act” means the Investment Canada Act (Canada), R.S.C. 1985, c.28 (1st Supp.), as amended;  

“Investment Canada Act Approval” means approval or deemed approval pursuant to the Investment Canada Act by the Minister of
Industry; 
 “Law” or “Laws” means all laws (including common law), by-laws, statutes, rules,
regulations, principles of law and equity, orders, rulings, ordinances, judgments, injunctions, determinations, awards, decrees or other legally binding requirements, whether domestic or foreign, and the terms and conditions of any Authorization of
or from any Governmental Entity, including for this purpose a self-regulatory authority (including, except for the purposes of Section 6.1(d), TSX and NASDAQ), and, for greater certainty, includes Canadian Securities Laws and U.S. Securities
Laws; and the term “applicable” with respect to such Laws and in a context that refers to a Party, means such Laws as are applicable to such Party and/or its Subsidiaries or their business, undertaking, property or securities and emanate
from a Person having jurisdiction over the Party and/or its Subsidiaries or its or their business, undertaking, property or securities; 

“Lenders” means the Agents and a group of lenders participating in the syndication of the credit facilities as arranged by the Agents;

 “Letter of Transmittal” means the letter of transmittal for use by Aastra Shareholders in the form that will
accompany the Aastra Circular; 
 “Liens” means any hypothecs, mortgages, pledges, assignments, liens, charges,
security interests, encumbrances and adverse rights or claims, other third party interest or encumbrance of any kind, whether contingent or absolute, and any agreement, option, right or privilege (whether by Law, contract or otherwise) capable of
becoming any of the foregoing;  
 “Mailing Deadline” means December 20, 2013; 

“Material Contracts” means in respect of a Party any Contract: (a) that if terminated or modified or if it ceased to be in effect,
would reasonably be expected to have a Mitel Material Adverse Effect or Aastra Material Adverse Effect (as the case may be) on such Party; (b) under which such Party or any of its Subsidiaries has directly or indirectly guaranteed any
liabilities or obligations of a third party (other than ordinary course endorsements for collection) in excess of $5,000,000 in the aggregate; (c) relating to indebtedness for borrowed money, whether incurred, assumed, guaranteed or secured by
any asset, with an outstanding principal amount in excess of $5,000,000; (d) under which such Party or any of its Subsidiaries is obligated to make or expects to receive payments in excess of $5,000,000 over the remaining term of the contract;
or (f) that is a collective bargaining agreement, a labour union contract or any other memorandum of understanding or other agreement with a union; 

  
 - 8 -

 “material fact” and “material change” have the meanings ascribed
thereto in the Securities Act; 
 “Meeting Deadline” means January 17, 2014;  

“MI 61-101” means Multilateral Instrument 61-101—Protection of Minority Security Holders in Special
Transactions; 
 “Minority Shareholders” means all Aastra Shareholders other than (i) Francis Shen,
Anthony Shen, Shen Capital Corporation, the Shen Family Charitable Foundation and 1615282 Ontario Inc., (ii) any related party of any of the foregoing within the meaning of MI 61-101, subject to the exceptions set out therein, (iii) any
other interested party to the Arrangement within the meaning of MI 61-101, and (iv) any person that is a joint actor with any of the foregoing for the purposes of MI 61-101; 
 “Mitel 2006 Equity Incentive Plan” means Mitel’s incentive plan dated September 7, 2006, as amended, that permits grants of stock options, deferred share units, restricted stock
units, performance share units and stock-based awards; 
 “Mitel Benefit Plans” means any pension or retirement income
plans or other employee compensation arrangement (other than equity- or security-based compensation arrangements), or benefit plans, agreements, policies, programs, arrangements or practices, whether written or oral, which are maintained by or
binding upon Mitel or any of its Subsidiaries or for which Mitel or any of its Subsidiaries could have any liability or contingent liability, or pursuant to which payments are made, or benefits are provided to, or an entitlement to payments or
benefits may arise with respect to any of its employees or former employees, directors or officers, individuals working on contract with Mitel or other individuals providing services to Mitel of a kind normally provided by employees (or any spouses,
dependants, survivors or beneficiaries of any such persons), excluding Statutory Plans; 
 “Mitel Balance Sheet”
has the meaning ascribed thereto in Section 4.1(n); 
 “Mitel Board” means the board of directors of Mitel as the
same is constituted from time to time; 
 “Mitel Commitment Letter” means the commitment letter between Mitel and the
Agents dated November 10, 2013, including the summaries of the terms attached thereto and the fee letter associated therewith; 

“Mitel Data Room” means the secure website at www.rrdvenue.com as of 12:00 p.m. (Toronto time) on November 10, 2013; 

 “Mitel Employee Share Plans” means the Mitel 2006 Equity Incentive Plan and inducement Mitel Options to acquire 515,175
Mitel Shares; 

  
 - 9 -

 “Mitel Expense Fee” has the meaning ascribed thereto in Section 7.3(b)(ii);

 “Mitel Expense Fee Event” has the meaning ascribed thereto in Section 7.3(e); 

“Mitel Financing” means the agreement of the Lenders to lend, subject to the terms and conditions of the Mitel Commitment Letter, the
amounts set forth therein, a portion of the proceeds of which will be used by Mitel for purposes of financing the aggregate cash component of the Consideration; 
 “Mitel Information Technology” means computer programs (including source code, object code and data) and related documentation and materials in each case as are necessary for
operating the relevant party’s business and other information technology systems owned, used or held for use in or relating to the business of Mitel or any of its Subsidiaries; 
 “Mitel Intellectual Property” means all Intellectual Property Rights that are used or held for use by Mitel or any of its Subsidiaries;  

“Mitel Licensed Intellectual Property” means all Mitel Intellectual Property which is used by Mitel or any of its Subsidiaries
under license; 
 “Mitel Licensed Technology” means all Mitel Technology which is used by Mitel or any of its
Subsidiaries under license from a third Person; 
 “Mitel Material Adverse Effect” means any event, change, occurrence,
effect or state of facts, that, individually or in the aggregate with other events, changes, occurrences, effects or states of facts is, or would reasonably be expected to be, material and adverse to the business, operations, results of operations,
capital, property, assets, liabilities, obligations (whether absolute, accrued, conditional or otherwise) or financial condition of Mitel and its Subsidiaries taken as a whole except any such event, change, occurrence, effect or state of facts
resulting from or arising in connection with:  
  

	 	(a)	any change or development affecting the industries in which Mitel and its Subsidiaries operate; 

 

	 	(b)	any change or development in global, national or regional political conditions (including any act of terrorism or any outbreak of hostilities or war or any escalation
or worsening thereof), any natural disaster or in general economic, business or regulatory conditions or in global financial, credit, currency or securities markets; 

 

	 	(c)	any adoption, proposed implementation or change in applicable Law or any interpretation thereof by any Governmental Entity; 

 

	 	(d)	any change in U.S. GAAP or changes in applicable regulatory accounting requirements applicable to the industries in which it conducts business;

  

	 	(e)	the announcement of the entering into of this Agreement and the transactions contemplated herein; 

  
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	 	(f)	actions or inactions expressly required by this Agreement or that are taken with the prior written consent of the applicable Party; 

 

	 	(g)	any change in the market price or trading volume of any securities of Mitel (it being understood, without limiting the applicability of paragraphs (a) through (f),
that the causes underlying such changes in market price or trading volume may be taken into account in determining whether a Mitel Material Adverse Effect has occurred), or any suspension of trading in securities generally or on any securities
exchange on which any securities of Mitel trades; or 

  

	 	(h)	the failure, in and of itself, of Mitel to meet any internal or public projections, forecasts or estimates of revenues or earnings (it being understood, without
limiting the applicability of paragraphs (a) through (f), that the causes underlying such failure may be taken into account in determining whether a Mitel Material Adverse Effect has occurred); 

provided, however, that any such event, change, occurrence, effect or state of facts referred to in paragraphs (a), (b), (c) or (d),
above does not primarily relate only to (or have the effect of primarily relating only to) Mitel and its Subsidiaries taken as a whole, or disproportionately adversely affects Mitel and its Subsidiaries, taken as a whole, compared to other companies
of similar size operating in the industries in which Mitel and its Subsidiaries operate; references in this Agreement to dollar amounts are not intended to be and shall not be deemed to be illustrative or interpretative for purposes of determining
whether a Mitel Material Adverse Effect has occurred; 
 “Mitel Option” means any subsisting option or other right to
acquire Mitel Shares granted under the Mitel Employee Share Plans; 
 “Mitel Owned Intellectual Property” means
all Mitel Intellectual Property which is not Mitel Licensed Intellectual Property; 
 “Mitel Owned Technology” means all
Mitel Technology which is not Mitel Licensed Technology; 
 “Mitel Public Documents” means all forms, reports,
schedules, statements and other documents filed by Aastra (and for the purposes of Section 4.1(l) those required to be filed) since April 30, 2012, with all applicable Governmental Entities which are publicly filed (and for the purposes of
Section 4.1(l) those required to be publicly filed); 
 “Mitel Shareholders” means the holders of Mitel
Shares; 
 “Mitel Shares” means the common shares in the authorized share capital of Mitel; 

“Mitel Shareholder Approval” means the approval of the Mitel Shareholders by ordinary resolution of the issuance of Mitel Shares
pursuant to the Arrangement, as required by section 611 of the TSX Company Manual, which approval shall be obtained either at a special meeting of the Mitel Shareholders or through a written consent satisfactory to the TSX; 

  
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 “Mitel Technical Information” means all trade secrets, confidential information and
other proprietary know-how and related technical knowledge owned, used or held for use in or relating to the business of Mitel or any of its Subsidiaries, including documented research, forecasts, studies, marketing plans, budgets, market data,
developmental, demonstration or engineering work, information that can be used to define a design or process or procure, produce, support or operate material and equipment, methods of production and procedures, all formulas and designs and drawings,
blueprints, patterns, plans, flow charts, parts lists, manuals and records, specifications, and test data; 
 “Mitel
Technology” means all Mitel Intellectual Property and Mitel Technical Information and Mitel Information Technology; 

“Mitel Warrants” means the Mitel warrants to acquire 2,478,326 Mitel Shares issued and outstanding as of November 10, 2013;

 “misrepresentation” has the meaning ascribed thereto in the Securities Act; 

“Multi-Employer Plan” means in respect of a Mitel Benefit Plan or Aastra Benefit Plan, a multi-employer pension plan as that term
is defined in applicable pension standards legislation, or any other benefit plan to which Mitel or Aastra or their respective Subsidiaries, as applicable, are required to make contributions pursuant to a collective bargaining agreement,
participation agreement or trust agreement and which are not maintained or administered by Mitel or Aastra (as applicable) or their affiliates;  
 “NASDAQ” means The NASDAQ Global Market; 

“NI 45-106” means National Instrument 45-106 – Prospectus and Registration Exemptions;

 “Option Shares” means the Mitel Shares issuable on exercise of Replacement Options; 

“Outside Date” means March 14, 2014 or such later date as may be agreed to by the Parties, provided however that if at that time
all conditions to closing of the Arrangement shall have been satisfied or waived, other than the condition set forth in Section 6.1(f) (and those conditions that by their terms are to be satisfied at the Effective Time), then either Party may
postpone the Outside Date by an additional 30 days by giving written notice to the other Party to such effect no later than 5:00 p.m. (Toronto time) on March 14, 2014, or such later date as may be agreed to in writing by the Parties;

 “Parties” means Aastra and Mitel, and “Party” means any of them; 

“Person” includes an individual, partnership, association, body corporate, trustee, executor, administrator, legal
representative, government (including any Governmental Entity) or any other entity, whether or not having legal status; 

“Plan of Arrangement” means the plan of arrangement of Aastra, substantially in the form of Schedule A hereto, and any amendments
or variations thereto made in accordance with Section 7.4 hereof and the Plan of Arrangement or upon the direction of the Court in the Final Order with the consent of Aastra and Mitel, each acting reasonably; 

  
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 “Pre-Arrangement Reorganization” has the meaning ascribed thereto under Section
5.5; 
 “Proposed Agreement” has the meaning ascribed thereto under Section 5.10(e); 

“Regulatory Approvals” means those approvals, sanctions, rulings, consents, determinations, orders, exemptions, permits and other
approvals (including the lapse, without objection, of a prescribed time under a statute or regulation that prohibits a transaction from being implemented until such prescribed time has lapsed, without objection, following the giving of notice
thereunder), waivers, early terminations, authorizations, clearances, or written confirmations of no intention to initiate legal proceedings from Governmental Authorities required to complete the Arrangement, including the Investment Canada Act
Approval and the French Determination; 
 “Replacement Option” has the meaning ascribed thereto under
Section 1.1 of the Plan of Arrangement; 
 “Representatives” has the meaning ascribed thereto under Section
5.10(a); 
 “Response Period” has the meaning ascribed thereto under Section 5.10(e)(vi); 

“Securities Act” means the Securities Act (Ontario) and the rules, regulations and published policies made
thereunder, as now in effect and as they may be promulgated or amended from time to time; 
 “Statutory Plans”
means statutory benefit plans which Aastra or Mitel, as applicable, are required to participate in or comply with, including any benefit plan administered by any federal or provincial government and any benefit plans administered pursuant to
applicable health, tax, workplace safety insurance, and employment insurance legislation; 
 “Subsidiary” has the
meaning ascribed thereto in the NI 45-106; 
 “Superior Proposal” means an unsolicited bona fide written
Acquisition Proposal to acquire all of the shares of a Party or all or substantially all of the assets of a Party and its Subsidiaries made by a third party after the date of this Agreement: (a) that is not subject to any financing condition
and in respect of which any required financing to complete such Acquisition Proposal has been demonstrated to be available to the satisfaction of the Aastra Board or the Mitel Board, as applicable, acting in good faith after consultation with its
financial advisor(s) and outside legal counsel; (b) that is not subject to a due diligence and/or access condition; (c) in respect of which the Aastra Board or the Mitel Board, as applicable, determines in good faith after consultation
with its financial advisor(s) and outside legal counsel and after taking into account all the terms and conditions of such Acquisition Proposal, including all legal, financial, regulatory and other aspects of such Acquisition Proposal and the Person
making such Acquisition Proposal, would, if consummated in accordance with its terms (but not assuming away any risk of non-competition), result in a transaction that is more favourable, from a financial point of view, to the Aastra Shareholders or
Mitel Shareholders, as applicable, than the Arrangement (including any adjustment to the terms and conditions of the Arrangement proposed by the other Party pursuant to Section 5.10(f); (d) that, after consultation with its financial
advisor(s) and outside counsel, is reasonably likely to be consummated without undue delay, taking into account all legal, financial, regulatory and other aspects of such Acquisition Proposal and the Person making such

  
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Acquisition Proposal; and (e) after receiving the advice of outside counsel, that failure to recommend such Acquisition Proposal to the Aastra Shareholders or Mitel Shareholders, as
applicable, would be inconsistent with its fiduciary duties under applicable Laws; 
 “Tax Act” means the
Income Tax Act (Canada) and the regulations made thereunder, as now in effect and as they may be promulgated or amended from time to time; 
 “Tax” or “Taxes” means any taxes, duties, fees, premiums, assessments, imposts, levies, expansion fees and other charges of any kind whatsoever imposed by any
Governmental Entity, including all interest, penalties, fines, additions to tax or other additional amounts imposed by any Governmental Entity in respect thereof, and including, but not limited to, those levied on, or measured by, or referred to as,
income, gross receipts, profits, windfall, royalty, capital, transfer, land transfer, sales, goods and services, harmonized sales, use, value-added, excise, stamp, withholding, business, franchising, property, development, occupancy, employer
health, payroll, employment, health, social services, education and social security taxes, all surtaxes, all customs duties and import and export taxes, countervail and anti-dumping, all licence, franchise and registration fees and all employment
insurance, health insurance and Canada, Québec and other pension plan premiums or contributions imposed by any Governmental Entity, and any transferee or secondary liability in respect of any of the foregoing; 

“Tax Returns” includes all returns, reports, declarations, elections, notices, filings, forms, statements and other documents
(whether in tangible, electronic or other form) and including any amendments, schedules, attachments, supplements, appendices and exhibits thereto, made, prepared, filed or required by a Governmental Entity to be made, prepared or filed by Law in
respect of Taxes; 
 “TSX” means Toronto Stock Exchange; 

“United States” or “U.S.” means the United States of America, its territories and possessions, any State of the
United States and the District of Columbia; 
 “Unreasonable Condition” has the meaning ascribed thereto under
Section 5.9(h);  
 “U.S. Exchange Act” means the U.S. Securities Exchange Act of 1934,
as amended and the rules and regulations promulgated thereunder; 
 “U.S. GAAP” means United States generally accepted
accounting principles;  
 “U.S. Securities Act” means the U.S. Securities Act of 1933, as
amended and the rules and regulations promulgated thereunder;  
 “U.S. Securities Laws” means the U.S.
Securities Act and all other applicable U.S. federal and state securities laws, rules and regulations and published policies thereunder. 
  

	1.2	Interpretation Not Affected by Headings 

The division of this Agreement into Articles, Sections, subsections and paragraphs and the insertion of headings are for convenience of reference only and
shall not affect in any way the meaning or interpretation of this Agreement. Unless the contrary intention appears, references in this Agreement to an Article, Section, subsection, paragraph or Schedule by number or letter or both refer to the
Article, Section, subsection, paragraph or Schedule, respectively, bearing that designation in this Agreement. 

  
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	1.3	Number and Gender 

 In this Agreement,
unless the contrary intention appears, words importing the singular include the plural and vice versa, and words importing gender shall include all genders. 
  

	1.4	Date for Any Action 

 If the date on which
any action is required to be taken hereunder by a Party is not a Business Day, such action shall be required to be taken on the next succeeding day which is a Business Day. 

 

	1.5	Currency 

 Unless otherwise stated, all
references in this Agreement to sums of money are expressed in lawful money of the United States of America and “$” refers to U.S. dollars. 
  

	1.6	Accounting Matters 

 Unless otherwise
stated, all accounting terms used in this Agreement in respect of (a) Mitel shall have the meanings attributable thereto under U.S. GAAP and all determinations of an accounting nature in respect of Mitel required to be made shall be made in
accordance with U.S. GAAP consistently applied; and (b) Aastra shall have the meanings attributable thereto under IFRS and all determinations of an accounting nature in respect of Aastra required to be made shall be made in accordance with IFRS
consistently applied. 
  

	1.7	Knowledge 

  

	 	(a)	In this Agreement, references to “the knowledge of Aastra” means the actual knowledge of any of the Co-Chief Executive Officers, the Chief Financial Officer
and the General Counsel of Aastra, in each case after reasonable inquiry. 

  

	 	(b)	In this Agreement, references to “the knowledge of Mitel” means the actual knowledge of any of the Chief Executive Officer, the Chief Financial Officer and
the General Counsel of Mitel, in each case after reasonable inquiry. 

  

	1.8	Schedules 

 The following Schedules are
annexed to this Agreement and are incorporated by reference into this Agreement and form a part hereof: 
  

					
	Schedule A	  	—	  	Form of Plan of Arrangement
	Schedule B	  	—	  	Form of Arrangement Resolution

  

  
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 ARTICLE 2 
 THE ARRANGEMENT 
  

	2.1	Arrangement 

 Aastra and Mitel agree that
the Arrangement will be implemented in accordance with the terms and subject to the conditions contained in this Agreement and the Plan of Arrangement. 
  

	2.2	Mitel Approval 

 Mitel represents and
warrants to Aastra that the Mitel Board: 
  

	 	(a)	has unanimously determined that the Arrangement and entry into this Agreement are in the best interests of Mitel; and 

 

	 	(b)	has received an opinion from Jefferies LLC, the financial advisor to Mitel, that the Consideration to be paid by Mitel to the Aastra Shareholders pursuant to the
Arrangement is fair from a financial point of view to Mitel. 

  

	2.3	Aastra Approval 

 Aastra represents and
warrants to Mitel that the Aastra Board: 
  

	 	(a)	has unanimously determined that: 

  

	 	(i)	the Arrangement is fair to the Aastra Shareholders; 

  

	 	(ii)	it will recommend that the Aastra Shareholders vote in favour of the Arrangement Resolution; and 

 

	 	(iii)	the Arrangement and entry into this Agreement are in the best interests of Aastra; and; 

 

	 	(b)	has received an opinion from TD Securities Inc., the financial advisor to Aastra, that the consideration to be received by Aastra Shareholders pursuant to the
Arrangement is fair from a financial point of view to the Aastra Shareholders. 

  

	2.4	Obligations of Mitel 

 Subject to the
terms and conditions of this Agreement, in order to facilitate the Arrangement, Mitel shall take all action necessary in accordance with all applicable Laws, to seek approval as promptly as practicable from the TSX to the Mitel Shareholder Approval
being obtained by written consent. If TSX approval is not obtained on or prior to November 25, 2013, Mitel shall take all action necessary to hold a special meeting of Mitel Shareholders to obtain Mitel Shareholder Approval as soon as
practicable and in any event at or before the time of the Aastra Meeting. 

  
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	2.5	Interim Order 

 As soon as reasonably
practicable following the execution of this Agreement, Aastra shall apply to the Court in a manner acceptable to Mitel, acting reasonably, pursuant to Section 192 of the CBCA and prepare, file and diligently pursue an application to the Court
for the Interim Order, which shall provide, among other things: 
  

	 	(a)	for the class of Persons to whom notice is to be provided in respect of the Arrangement and the Aastra Meeting and for the manner in which such notice is to be
provided; 

  

	 	(b)	for confirmation of the record date for the Aastra Meeting referred to in Section 2.6; 

 

	 	(c)	that the requisite approval for the Arrangement Resolution shall be (i) 66 2/3% of the votes cast on the Arrangement Resolution by the Aastra Shareholders present
in person or represented by proxy at the Aastra Meeting; such that each Aastra Shareholder is entitled to one vote for each Aastra Share held; and (ii) if required, a simple majority of the votes cast on the Arrangement Resolution by Minority
Shareholders present in person or represented by proxy at the Aastra Meeting; 

  

	 	(d)	that it is the intention of the Parties to rely upon Section 3(a)(10) of the U.S. Securities Act to issue the Consideration Shares in accordance with the
Arrangement, based on the Court’s approval of the Arrangement and its determination of the substantive and procedural fairness of the Arrangement; 

  

	 	(e)	that the Aastra Meeting may be adjourned or postponed from time to time by the Aastra Board subject to the terms of this Agreement without the need for additional
approval of the Court; 

  

	 	(f)	that the record date for Aastra Shareholders entitled to notice of and to vote at the Aastra Meeting will not change in respect of any adjournment(s) of the Aastra
Meeting; 

  

	 	(g)	that, in all other respects, other than as ordered by the Court, the terms, conditions and restrictions of the constating documents of Aastra, including quorum
requirements and other matters, shall apply in respect of the Aastra Meeting; 

  

	 	(h)	for the grant of the Dissent Rights to registered holders of Aastra Shares as set forth in the Plan of Arrangement; 

 

	 	(i)	for the notice requirements with respect to the presentation of the application to the Court for the Final Order; and 

 

	 	(j)	for such other matters as Mitel may reasonably require, subject to obtaining the prior consent of Aastra, such consent not to be unreasonably withheld or delayed.

  
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	2.6	Aastra Meeting 

 Subject to the terms of
this Agreement and receipt of the Interim Order: 
  

	 	(a)	Aastra shall convene and conduct the Aastra Meeting in accordance with its constating documents, the Interim Order and applicable Laws, as soon as reasonably
practicable, and in any event on or before the Meeting Deadline. Aastra will, in consultation with and subject to the approval of Mitel, fix and publish a record date for the purposes of determining the Aastra Shareholders entitled to receive notice
of and vote at the Aastra Meeting. 

  

	 	(b)	Subject to the terms of this Agreement, Aastra shall not adjourn, postpone or cancel (or propose or permit the adjournment, postponement or cancellation of) the Aastra
Meeting without Mitel’s prior written consent, except: 

  

	 	(i)	as required for quorum purposes (in which case the meeting shall be adjourned and not cancelled), by Law or by valid Aastra Shareholder action (which action is not
solicited or proposed by Aastra or the Aastra Board); or 

  

	 	(ii)	as otherwise permitted under this Agreement. 

  

	 	(c)	Subject to the terms of this Agreement, Aastra shall solicit proxies in favour of the Arrangement Resolution and against any resolution submitted by any Aastra
Shareholder that is inconsistent with the Arrangement Resolution and the completion of any of the transactions contemplated by this Agreement, and take all actions that are reasonably necessary or desirable to seek the approval of the Arrangement by
the Aastra Shareholders, including, if so requested by Mitel, using the services of dealers and proxy solicitation services and permitting Mitel to otherwise assist Aastra in such solicitation, provided that Aastra shall not be required to continue
to solicit proxies in favour of the Arrangement Resolution if there has been an Aastra Change of Recommendation but shall continue to be required to hold the Aastra Meeting and to cause the Arrangement Resolution to be voted on at such meeting in
accordance with Section 2.6(a) and shall not propose to adjourn or postpone such meeting other than as permitted under Section 2.6(b). 

  

	 	(d)	Aastra will advise Mitel as Mitel may reasonably request, and at least on a daily basis on each of the last ten Business Days prior to the date of the Aastra Meeting,
as to the aggregate tally of the proxies received by Aastra in respect of the Arrangement Resolution. 

  

	 	(e)	Aastra will advise Mitel of any written notice of dissent or purported exercise by any Aastra Shareholder of Dissent Rights received by Aastra in relation to the
Arrangement and any withdrawal of Dissent Rights received by Aastra and any written communications sent by or on behalf of Aastra to any Aastra Shareholder exercising or purporting to exercise Dissent Rights in relation to the Arrangement.

  
 - 18 -

	 	(f)	Aastra shall not propose or submit for consideration at the Aastra Meeting any business other than the Arrangement without Mitel’s prior written consent.

  

	 	(g)	At the reasonable request of Mitel from time to time, Aastra shall promptly provide Mitel with a list (in both written and electronic form) of the registered Aastra
Shareholders, together with their addresses and respective holdings of Aastra Shares, with a list of the names and addresses and holdings of all Persons having rights issued by Aastra to acquire Aastra Shares (including holders of Aastra Options)
and a list of non-objecting beneficial owners of Aastra Shares, together with their addresses and respective holdings of Aastra Shares. Aastra shall from time to time require that its registrar and transfer agent furnish Mitel with such additional
information, including updated or additional lists of Aastra Shareholders and lists of holdings and other assistance as Mitel may reasonably request including, for greater certainty, information that may be necessary for Mitel to establish
compliance with any applicable state “blue sky” securities law requirements under U.S. Securities Laws. 

  

	2.7	Aastra Circular 

  

	 	(a)	As promptly as reasonably practicable following execution of this Agreement, and in any event prior to the close of business on the Mailing Deadline, Aastra shall
(i) prepare the Aastra Circular together with any other documents required by applicable Laws; (ii) file the Aastra Circular in all jurisdictions where the same is required to be filed; and (iii) mail the Aastra Circular as required
under applicable Laws and by the Interim Order. 

  

	 	(b)	On the date of mailing thereof, Aastra shall ensure that the Aastra Circular complies in all material respects with all applicable Laws and the Interim Order and shall
contain sufficient detail to permit the Aastra Shareholders to form a reasoned judgment concerning the matters to be placed before them at the Aastra Meeting, and, without limiting the generality of the foregoing, shall take all reasonable steps to
ensure that the Aastra Circular will not contain any misrepresentation (except that Aastra shall not be responsible to Mitel for any information relating to Mitel and its affiliates, including in relation to the Mitel Shares). The Aastra Circular
shall also contain such information as may be required to allow Mitel to rely upon the exemption from registration provided under Section 3(a)(10) of the U.S. Securities Act with respect to the issuance of the Consideration Shares pursuant to
the Arrangement. 

  

	 	(c)	Subject to Section 5.10, the Aastra Circular shall (i) state that the Aastra Board has unanimously determined that the Arrangement is fair to the Aastra
Shareholders and that the Arrangement and entry into this Agreement are in the best interests of Aastra; (ii) contain the unanimous recommendation of the Aastra Board to Aastra Shareholders that they vote in favour of the Arrangement
Resolution; and (iii) include a statement that each director of Aastra intends to vote all of such individual’s Aastra Shares in favour of the Arrangement Resolution and against any resolution submitted by any Aastra Shareholder that is
inconsistent with the Arrangement. 

  
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	 	(d)	Mitel shall provide Aastra with all information regarding Mitel, its affiliates and the Mitel Shares, including any pro forma financial statements prepared in
accordance with U.S. GAAP and applicable Laws, as required by the Interim Order or applicable Laws for inclusion in the Aastra Circular or in any amendments or supplements to such Aastra Circular, including all details relevant to the tax elections
contemplated by Section 5.14 hereof. Mitel and Aastra shall also use their commercially reasonable efforts to obtain any necessary consents from any of their respective auditors and any other advisors to the use of any financial, technical or
other expert information required to be included in the Aastra Circular and to the identification in the Aastra Circular of each such advisor. Mitel shall take all reasonable steps to ensure that such information does not include any
misrepresentation concerning Mitel, its affiliates and the Consideration, including in relation to the Mitel Shares, and will indemnify Aastra for all claims, losses, costs and expenses incurred by Aastra in respect of any such misrepresentation.

  

	 	(e)	Mitel and its legal counsel shall be given a reasonable opportunity to review and comment on the Aastra Circular prior to the Aastra Circular being printed and filed
with any Governmental Entity, and reasonable consideration shall be given to any comments made by Mitel and its legal counsel, provided that all information relating solely to Mitel and its affiliates included in the Aastra Circular shall be in form
and content approved in writing by Mitel, acting reasonably. Aastra shall provide Mitel with final copies of the Aastra Circular prior to the mailing to the Aastra Shareholders. 

 

	 	(f)	Aastra and Mitel shall each promptly notify the other if at any time before the Effective Date either becomes aware that the Aastra Circular contains a
misrepresentation, or otherwise requires an amendment or supplement and the Parties shall co-operate in the preparation of any amendment or supplement to the Aastra Circular as required or appropriate, and Aastra shall promptly mail or otherwise
publicly disseminate any amendment or supplement to the Aastra Circular to Aastra Shareholders and, if required by the Court or applicable Laws, file the same with any Governmental Entity and as otherwise required. 

 

	2.8	Aastra Shareholder Rights Plan 

 Aastra
and its board of directors shall take all actions necessary, immediately prior to the Effective Time, to waive the application of the Aastra Shareholder Rights Plan to the Arrangement and to ensure that the Aastra Shareholder Rights Plan does not
interfere with or impede the success of the Arrangement. Prior to the earlier of the (a) the Effective Time and (b) the termination of this Agreement in accordance with Section 7.2, Aastra shall not terminate, waive any provision of,
exempt any Person from, or amend the terms of, the Aastra Shareholder Rights Plan, or redeem any rights thereunder except as provided herein. 

  
 - 20 -

	2.9	Final Order 

 If (a) the Interim
Order is obtained and (b) the Arrangement Resolution is passed at the Aastra Meeting by the Aastra Shareholders as provided for in the Interim Order and as required by applicable Law, subject to the terms of this Agreement, Aastra shall
diligently pursue and take all steps necessary or desirable to have the hearing before the Court of the application for the Final Order pursuant to Section 192 of the CBCA held as soon as reasonably practicable and, in any event, within three
Business Days following the approval of the Arrangement Resolution at the Aastra Meeting. 
  

	2.10	Court Proceedings 

 Subject to the terms
of this Agreement, Mitel shall cooperate with and assist Aastra in seeking the Interim Order and the Final Order, including by providing to Aastra, on a timely basis, any information reasonably required to be supplied by Mitel in connection
therewith. Aastra shall provide Mitel’s legal counsel with reasonable opportunity to review and comment upon drafts of all material to be filed with the Court in connection with the Arrangement, and will give reasonable consideration to all
such comments. Subject to applicable Law, Aastra shall not file any material with the Court in connection with the Arrangement or serve any such material, and shall not agree to modify or amend materials so filed or served, except as contemplated by
this Section 2.10 or with Mitel’s prior written consent, such consent not to be unreasonably withheld, conditioned or delayed; provided that nothing herein shall require Mitel to agree or consent to any increase in or variation in the form
of Consideration or other modification or amendment to such filed or served materials that expands or increases Mitel’s obligations set forth in any such filed or served materials or under this Agreement or the Arrangement. Aastra shall also
provide to Mitel’s legal counsel on a timely basis, copies of any notice of appearance or other Court documents served on Aastra in respect of the application for the Interim Order or the Final Order or any appeal therefrom and of any notice,
whether written or oral, received by Aastra indicating any intention to oppose the granting of the Interim Order or the Final Order or to appeal the Interim Order or the Final Order. Aastra shall ensure that all materials filed with the Court in
connection with the Arrangement are consistent in all material respects with the terms of this Agreement and the Plan of Arrangement. In addition, Aastra shall not object to legal counsel to Mitel making such submissions on the hearing of the motion
for the Interim Order and the application for the Final Order as such counsel considers appropriate, provided that Aastra is advised of the nature of any submissions prior to the hearing and such submissions are consistent in all material respects
with this Agreement and the Plan of Arrangement. Aastra shall also oppose any proposal from any party that the Final Order contain any provision inconsistent with this Agreement, and, if at any time after the issuance of the Final Order and prior to
the Effective Date, Aastra is required by the terms of the Final Order or by Law to return to Court with respect to the Final Order, it shall do so after notice to, and in consultation and cooperation with, Mitel. 

 

	2.11	Articles of Arrangement and Effective Date 

The Articles of Arrangement shall implement the Arrangement and the Arrangement shall become effective at the Effective Time on the Effective Date. Upon
issuance of the Final Order and subject to the satisfaction or waiver of the conditions precedent in Article 6, each of Mitel and Aastra shall execute and deliver such closing documents and instruments. On the second Business Day following
satisfaction or waiver of such conditions precedent (excluding conditions that are to be and can be satisfied by actions taken at the Effective Time and the condition in Section 6.2(e), but subject to the satisfaction or waiver of such
conditions) Aastra shall proceed to file the Articles of Arrangement, the Final Order and such other documents as may be required to give effect to the Arrangement with the Director pursuant to section 192 of

  
 - 21 -

 
the CBCA (provided that the Articles of Arrangement shall not be sent to the Director, for endorsement and filing by the Director, except as contemplated hereby or with Mitel’s prior written
consent), whereupon the transactions comprising the Arrangement shall occur and shall be deemed to have occurred in the order set out therein without any further act or formality. From and after the Effective Time, the Plan of Arrangement will have
all of the effects provided by applicable Laws, including the CBCA. Aastra agrees to amend the Plan of Arrangement at any time prior to the Effective Time in accordance with Section 7.4 of this Agreement to include such other terms determined
to be necessary or desirable by Mitel, acting reasonably, provided that the Plan of Arrangement shall not be amended in any manner which is (a) inconsistent with the provisions of this Agreement; (b) would reasonably be expected to delay,
impair or impede the satisfaction of any condition set forth in Article 6; (c) which has the effect of reducing the Consideration; or (d) which is otherwise prejudicial to the Aastra Shareholders or other parties to be bound by the Plan of
Arrangement. The closing of the Arrangement will take place at the offices of Osler, Hoskin & Harcourt LLP, Suite 6600, First Canadian Place, Toronto, Ontario at 8:00 a.m. (Toronto time) on the Effective Date, or at such other time and
place as may be agreed to by the Parties. 
  

	2.12	Payment of Consideration 

 Mitel will,
following receipt by Aastra of the Final Order and prior to the filing by Aastra of the Articles of Arrangement with the Director, deposit in escrow with the Depositary: (i) sufficient funds to satisfy the cash consideration payable to the
Aastra Shareholders, plus sufficient funds to satisfy any cash payment in lieu of fractional Mitel Shares; and (ii) the Consideration Shares. 
  

	2.13	Announcement and Shareholder Communications 

 The Parties agree to issue jointly a press release with respect to this Agreement as soon as practicable after its due execution. Thereafter, Mitel and Aastra agree to co-operate and participate in
presentations to investors regarding the Arrangement prior to the making of such presentations and to promptly advise, consult and co-operate with each other in issuing any press releases or otherwise making public statements with respect to this
Agreement or the Arrangement and in making any filing with any Governmental Entity or with any stock exchange, including the TSX and NASDAQ, with respect thereto. Each Party shall: (i) not issue any press release or otherwise make public
statements with respect to this Agreement or the Arrangement without the consent of the other Party, which consent shall not be unreasonably withheld, conditioned or delayed; and (ii) enable the other Party to review and comment on all such
press releases prior to the release thereof and shall enable the other Party to review and comment on such filings prior to the filing thereof; provided, however, that the foregoing shall be subject to each Party’s overriding obligation to make
disclosure in accordance with applicable Laws, and if such disclosure is required and the other Party has not reviewed or commented on the disclosure, the Party making such disclosure shall use commercially reasonable efforts to give prior oral or
written notice to the other Party, and if such prior notice is not possible, to give such notice immediately following the making of such disclosure or filing. For the avoidance of doubt, the foregoing shall not prevent either Party from making
internal announcements to employees and having discussions with shareholders and financial analysts and other stakeholders so long as such statements and announcements are consistent with the most recent press releases, public disclosures or public
statements made by the Parties. 

  
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	2.14	U.S. Securities Law Matters 

 The Parties
intend that the Arrangement shall be carried out such that the issuance of the Consideration Shares under the Arrangement qualifies for the exemption from the registration requirements of the U.S. Securities Act provided by Section 3(a)(10) of
the U.S. Securities Act and applicable state securities laws in reliance upon similar exemptions under applicable state securities laws. Each Party agrees to act in good faith, consistent with the intent of the Parties and the intended treatment of
the Arrangement as set forth in this Section 2.14. In order to ensure the availability of the exemption afforded by Section 3(a)(10) and corresponding exemptions under state securities laws; the Parties agree that the Arrangement will be
carried out on the following basis: 
  

	 	(a)	the Arrangement will be subject to the approval of the Court; 

  

	 	(b)	the Court will be advised as to the intention of the Parties to rely on the exemption afforded by Section 3(a)(10) prior to the Court hearing at which the Interim
Order will be sought; 

  

	 	(c)	the Court will be required to satisfy itself as to the fairness of the Arrangement; 

 

	 	(d)	the Final Order will address the Arrangement being approved by the Court as being substantively and procedurally fair to Aastra Shareholders; 

 

	 	(e)	the Parties will ensure that each Shareholder will be given adequate notice advising them of their right to attend the Court hearing and providing them with sufficient
information necessary for them to exercise that right; 

  

	 	(f)	the Interim Order will specify that each Aastra Shareholder will have the right to appear before the Court at the Court hearing on the Final Order so long as such
Shareholder files and delivers notice to the Court of an intention to do so within a reasonable time. 

 In addition to the
foregoing, it is agreed that Mitel shall not be required to deliver any Consideration Shares to an Aastra Shareholder in any state where registration or qualification of the Consideration Shares would be required under state “blue sky”
securities laws in order to do so, and may instead arrange for the sale of any such Consideration Shares on behalf of such Aastra Shareholder and the delivery to such Aastra Shareholder of an amount of cash representing the net proceeds of the sale
thereof. 

  
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 ARTICLE 3 
 REPRESENTATIONS AND WARRANTIES OF AASTRA 
  

	3.1	Representations and Warranties 

 Except as
set forth in the Aastra Public Documents, Aastra hereby represents and warrants to Mitel as follows, and acknowledges that Mitel is relying upon such representations and warranties in connection with the entering into of this Agreement: 

 

	 	(a)	Organization and Qualification. Aastra is duly incorporated and validly existing under the CBCA and has the corporate power and authority to own its assets and
conduct its business as now owned and conducted. Aastra is duly qualified to carry on business and is in good standing in each jurisdiction in which its assets and properties, owned, leased, licensed or otherwise held, or the nature of its
activities makes such qualification necessary, and has all Authorizations, consents and approvals required to own, lease and operate its assets and properties as they are now being owned, leased and operated and to carry on its business as now
conducted, except where the failure to be so qualified will not, individually or in the aggregate, have an Aastra Material Adverse Effect. True and complete copies of the constating documents of Aastra have been provided to Mitel, and Aastra has not
taken any action to amend or supersede such documents. 

  

	 	(b)	Authority Relative to this Agreement. Aastra has the requisite corporate power and authority to enter into this Agreement and the agreements and other documents
to be entered into by it hereunder and to perform its obligations hereunder and thereunder. The execution and delivery of this Agreement and the agreements and other documents to be entered into by it hereunder and the consummation by Aastra of the
transactions contemplated hereunder and thereunder have been duly authorized by the Aastra Board and no other corporate proceedings on the part of Aastra are necessary to authorize this Agreement and the agreements and other documents to be entered
into by it hereunder other than Aastra Shareholder Approval. This Agreement has been duly executed and delivered by Aastra and constitutes a valid and binding obligation of Aastra, enforceable by Mitel against Aastra in accordance with its terms,
except as the enforcement thereof may be limited by bankruptcy, insolvency and other applicable Laws affecting the enforcement of creditors’ rights generally and subject to the qualification that equitable remedies may be granted only in the
discretion of a court of competent jurisdiction. 

  

	 	(c)	No Conflict; Required Filings and Consent. The execution and delivery by Aastra of this Agreement and the performance by it of its obligations hereunder and the
completion of the Arrangement will not: 

  

	 	(i)	subject to receipt of Regulatory Approvals, violate, conflict with or result in a breach of: 

 

	 	(A)	any provision of the articles, by-laws or other constating documents of Aastra or any of its Subsidiaries, except as would not, individually or in the aggregate, have
or reasonably be expected to have an Aastra Material Adverse Effect; 

  

	 	(B)	any Material Contract or Authorization to which Aastra or any of its Subsidiaries is a party or by which Aastra or any of its Subsidiaries is bound, except as would
not, individually or in the aggregate, have or reasonably be expected to have an Aastra Material Adverse Effect; or 

  
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	 	(C)	any Law to which Aastra or any of its Subsidiaries is subject or by which Aastra or any of its Subsidiaries is bound, except as would not, individually or in the
aggregate, have or reasonably be expected to have an Aastra Material Adverse Effect; 

  

	 	(ii)	subject to receipt of Regulatory Approvals, give rise to any right of termination, or the acceleration of any indebtedness, under any Material Contract or Authorization
to which Aastra or any of its Subsidiaries is a party, except as would not, individually or in the aggregate, have or reasonably be expected to have an Aastra Material Adverse Effect; or 

 

	 	(iii)	give rise to any rights of first refusal or rights of first offer, trigger any change of control provision or any restriction or limitation under any Material Contract
or Authorization, or result in the imposition of any Lien upon any of Aastra’s assets or the assets of any of its Subsidiaries, except as would not, individually or in the aggregate, have or reasonably be expected to have an Aastra Material
Adverse Effect. 

 Other than Regulatory Approvals, compliance with any applicable Laws, stock exchange rules and
policies, the Interim Order, the Final Order and the filing of the Certificate of Arrangement and Articles of Arrangement, no Authorization of, or filing with, any Governmental Entity is necessary on the part of Aastra or any of its Subsidiaries for
the consummation by Aastra of its obligations in connection with the Arrangement under this Agreement or for the completion of the Arrangement, except for such Authorizations and filings as to which the failure to obtain or make would not,
individually or in the aggregate, result in an Aastra Material Adverse Effect. 
  

	 	(d)	Subsidiaries. All of Aastra’s Subsidiaries or material interests in any Person have been disclosed in the Aastra Data Room. Each Subsidiary of Aastra is
duly organized and is validly existing under the Laws of its jurisdiction of incorporation or organization, has full corporate power and authority to own, lease or operate its assets and property as they are now being owned, leased and operated and
conduct its business as now owned and conducted by it and is duly qualified to carry on business in each jurisdiction in which the character of its properties or the nature of its activities makes such qualification necessary, except where the
failure to be so qualified would not have an Aastra Material Adverse Effect. Aastra beneficially owns, directly or indirectly, all of the issued and outstanding securities of each of its material Subsidiaries. All of the outstanding shares owned
(directly or indirectly) by Aastra in the capital of each of its material Subsidiaries that is a corporation are validly issued, fully-paid and non-assessable and all such shares are owned free and clear of all Liens and any other restrictions
including any restriction on the right to vote, sell or otherwise dispose of shares. 

  
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	 	(e)	Compliance with Laws. To the knowledge of Aastra: 

  

	 	(i)	the operations of Aastra and its Subsidiaries have been and are now conducted in compliance with all Laws of each jurisdiction, the Laws of which have been and are now
applicable to the operations of Aastra or of any of its Subsidiaries and none of Aastra or any of its Subsidiaries has received any notice of any alleged violation of any such Laws, other than non-compliance or violations which, individually or in
the aggregate, would not have an Aastra Material Adverse Effect; and 

  

	 	(ii)	none of Aastra or any of its Subsidiaries is in conflict with, or in default (including cross defaults) under or in violation of: (a) its articles or by-laws or
equivalent organizational documents; or (b) any Material Contract, except for failures which, individually or in the aggregate, would not have an Aastra Material Adverse Effect. 

 

	 	(f)	Authorizations. Aastra and its Subsidiaries have obtained all Authorizations necessary for the ownership, operation and use of the assets of Aastra and its
Subsidiaries or otherwise in connection with carrying on the business and operations of Aastra and its Subsidiaries in compliance with all applicable Laws, except where the failure to have any such Authorization, individually or in the aggregate,
would not have an Aastra Material Adverse Effect. Such Authorizations are in full force and effect in accordance with their terms, and Aastra and its Subsidiaries have fully complied with and are in compliance with all material Authorizations,
except, in each case, for such non-compliance which, individually or in the aggregate, would not have an Aastra Material Adverse Effect. To the knowledge of Aastra, there is no action, investigation or proceeding pending or threatened regarding any
of the material Authorizations. To the knowledge of Aastra, none of Aastra or any of its Subsidiaries has received any notice, whether written or oral, of revocation or non-renewal of any such Authorizations, or of any intention of any Person to
revoke or refuse to renew any of such Authorizations, except in each case, for revocations or non-renewals which, individually or in the aggregate, would not have an Aastra Material Adverse Effect and, to the knowledge of Aastra, all such
Authorizations continue to be effective in order for Aastra and its Subsidiaries to continue to conduct their respective businesses as they are currently being conducted. To the knowledge of Aastra, no Person other than Aastra or a Subsidiary
thereof owns or has any proprietary, financial or other interest (direct or indirect) in any of the Authorizations, except for interests which, individually or in the aggregate, would not have an Aastra Material Adverse Effect.

  

	 	(g)	Capitalization and Listing. 

  

	 	(i)	 The authorized share capital of Aastra consists of an unlimited number of Aastra Shares and an unlimited number of preferred shares. As of the date of
this Agreement there are: (A) 11,797,114 Aastra Shares validly issued and outstanding as fully-paid and non-assessable shares of Aastra; (B) no preferred shares issued or outstanding; (C) 277,966 outstanding Aastra

  
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Options providing for the issuance of 470,250 Aastra Shares upon the exercise thereof; (D) 45,000 Aastra SARS providing for cash settlement in accordance with Aastra SAR Plan; and (E) 1,608
Aastra DSUs providing for cash settlement in accordance with Aastra DSU Plan. All Aastra Shares issuable upon the exercise of rights under the Aastra Options in accordance with their terms have been duly authorized and, upon issuance, will be
validly issued as fully paid and non-assessable and are not and will not be subject to or issued in violation of, any pre-emptive rights. The material terms of the Aastra Options (including exercise price) are disclosed in the Aastra Data Room.
Except for the Aastra Options, Aastra SARS, Aastra DSUs referred to in this Section 3.1(g)(i) and rights issuable under the Aastra Shareholder Rights Plan, there are no options, warrants, conversion privileges, calls or other rights,
shareholder rights plans, agreements, arrangements, commitments or obligations of Aastra or any of its Subsidiaries to issue or sell any shares in the capital of Aastra or of any of its Subsidiaries or securities or obligations of any kind
convertible into, exchangeable for or otherwise carrying the right or obligation to acquire any shares in the capital of Aastra or any of its Subsidiaries, and other than the Aastra Employee Share Plans, there are no equity or security based
compensation arrangements maintained by Aastra. In the 30 days prior to the date hereof, there have been no authorizations or new issuances under the Aastra Employee Share Plans. No Person is entitled to any pre-emptive or other similar right
granted by Aastra or any of its Subsidiaries. 

  

	 	(ii)	Aastra has disclosed in the Aastra Data Room a schedule, as of the date hereof, aggregating all outstanding grants to holders of Aastra Options, Aastra SARs and Aastra
DSUs and the number, exercise price and expiration dates of each grant to such holders. 

  

	 	(iii)	As of the date hereof, there are no outstanding contractual obligations of Aastra or any of its Subsidiaries to repurchase, redeem or otherwise acquire any Aastra
Shares or any shares of any of its Subsidiaries. No Subsidiary of Aastra owns any Aastra Shares. 

  

	 	(iv)	No order ceasing or suspending trading in securities of Aastra or prohibiting the sale of such securities has been issued and is outstanding against Aastra or its
directors or officers. 

  

	 	(v)	All outstanding securities of Aastra have been issued in material compliance with all applicable Laws. 

 

	 	(vi)	There are no bonds, debentures or other evidences of indebtedness of Aastra or its Subsidiaries outstanding having the right to vote (or that are convertible or
exercisable for securities having the right to vote) with Aastra Shareholders on any matter. 

  

	 	(h)	Shareholder and Similar Agreements. Except for the Aastra Shareholders Rights Plan, Aastra is not party to any shareholder, pooling, voting trust or other
similar agreement relating to the issued and outstanding shares in the capital of Aastra or any of its Subsidiaries. 

  
 - 27 -

	 	(i)	Reporting Issuer Status and Stock Exchange Compliance. As of the date hereof, Aastra is a reporting issuer not in default (or the equivalent) under Canadian
Securities Laws in each of the provinces and territories of Canada. There is no delisting, suspension of trading in or cease trading order with respect to any securities of Aastra. The Aastra Shares are listed and posted for trading on the TSX, and
are not listed on any market other than TSX, and Aastra is in compliance in all material respects with the applicable listing and corporate governance rules and regulations of the TSX. 

 

	 	(j)	U.S. Securities Law Matters. 

  

	 	(i)	There is no class of securities of Aastra which is registered pursuant to Section 12 of the U.S. Exchange Act, nor is Aastra subject to any reporting obligation
(whether active or suspended) pursuant to section 15(d) of the U.S. Exchange Act. Aastra is not, and has never been, subject to any requirement to register any class of its equity securities pursuant to Section 12(g) of the U.S. Exchange Act.

  

	 	(ii)	Aastra is not an investment company registered or required to be registered under the U.S. Investment Company Act of 1940, as amended. 

 

	 	(iii)	Aastra is not, has not previously been and on the Effective Date will not be a “shell company” (as defined in Rule 405 under the U.S. Securities Act).

  

	 	(k)	Reports. Aastra has filed true and correct copies of Aastra Public Documents that Aastra is required to file under Canadian Securities Laws. Aastra has filed all
other documents required to be filed by it with all applicable Governmental Entities, other than such documents that the failure to file would, individually or in the aggregate, not have an Aastra Material Adverse Effect. Aastra Public Documents at
the time filed (a) did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made,
not misleading; and (b) complied in all material respects with the requirements of applicable Canadian Securities Laws. Aastra has not filed any confidential material change report with any Governmental Entity which at the date hereof remains
confidential. 

  

	 	(l)	Financial Statements. 

  

	 	(i)	 The audited consolidated financial statements for Aastra as of and for each of the fiscal years ended on December 31, 2012 and December 31,
2011 including the notes thereto and the interim unaudited consolidated financial statements for Aastra for the period ended September 30, 2013 including the notes thereto have been, and all financial statements of

  
 - 28 -

	 	
Aastra which are publicly disseminated by Aastra in respect of any subsequent periods prior to the Effective Date will be, prepared in accordance with IFRS applied on a basis consistent with
prior periods and all applicable Laws and present fairly, in all material respects, the assets, liabilities (whether accrued, absolute, contingent or otherwise), consolidated financial position and results of operations of Aastra and its
Subsidiaries as of the respective dates thereof and its results of operations and cash flows for the respective periods covered thereby (except as may be indicated expressly in the notes thereto). There are no outstanding loans made by Aastra or any
of its Subsidiaries to any executive officer or director of Aastra. 

  

	 	(ii)	The management of Aastra has established and maintained a system of disclosure controls and procedures designed to provide reasonable assurance that information
required to be disclosed by Aastra in its annual filings, interim filings or other reports filed or submitted by it under the applicable Laws imposed by Governmental Entities is recorded, processed, summarized and reported within the time periods
specified by such Laws imposed by such Governmental Entities. Such disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed by Aastra in its annual filings, interim filings or
other reports filed or submitted under the applicable Laws imposed by Governmental Entities is accumulated and communicated to Aastra’s management, including its chief executive officers and chief financial officers (or Persons performing
similar functions), as appropriate to allow timely decisions regarding required disclosure. 

  

	 	(iii)	 Aastra maintains internal control over financial reporting. Such internal control over financial reporting is effective in providing reasonable
assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with IFRS and includes policies and procedures that (A) pertain to the maintenance of records that in
reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of Aastra and its Subsidiaries; (B) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial
statements in accordance with IFRS, and that receipts and expenditures of Aastra and its Subsidiaries are being made only with authorizations of management and directors of Aastra and its Subsidiaries; and (C) provide reasonable assurance
regarding prevention or timely detection of unauthorized acquisition, use or disposition of the assets of Aastra or its Subsidiaries that could have a material effect on its financial statements. To the knowledge of Aastra, as of the date of this
Agreement (x) there are no material weaknesses in the design and implementation or maintenance of internal controls over financial reporting of Aastra that are reasonably likely to adversely affect the ability of Aastra to record, process,

  
 - 29 -

	 	
summarize and report financial information; and (y) there is no fraud, whether or not material, that involves management or other employees who have a significant role in the internal
control over financial reporting of Aastra. 

  

	 	(iv)	To the knowledge of Aastra, none of Aastra, any of its Subsidiaries or, any director, officer, employee, auditor, accountant or representative of Aastra or any of its
Subsidiaries has received or otherwise had or obtained knowledge of any material complaint, allegation, assertion, or claim, whether written or oral, regarding the accounting or auditing practices, procedures, methodologies or methods of Aastra or
any of its Subsidiaries or their respective internal accounting controls, including any material complaint, allegation, assertion, or claim that Aastra or any of its Subsidiaries has engaged in questionable accounting or auditing practices, which
has not been resolved to the satisfaction of the audit committee of the Aastra Board. 

  

	 	(m)	Undisclosed Liabilities. None of Aastra or any of its Subsidiaries has any material liabilities or obligations of any nature, whether or not accrued, contingent
or otherwise, except for (a) liabilities and obligations that are specifically presented on the unaudited consolidated balance sheet of Aastra as of September 30, 2013 (the “Aastra Balance Sheet”) or disclosed in the notes
thereto; (b) those incurred in the ordinary course of business and not required to be set forth in the Aastra Balance Sheet under IFRS; (c) those incurred in the ordinary course of business since the date of the Aastra Balance Sheet and
consistent with past practice; and (d) those incurred in connection with the execution of this Agreement. 

  

	 	(n)	Real Property and Personal Property. 

  

	 	(i)	Aastra and its Subsidiaries have good and marketable title to all real property owned by Aastra and its Subsidiaries, free and clear of all Liens except for Permitted
Liens. 

  

	 	(ii)	Aastra and its Subsidiaries have good and valid title to, or a valid and enforceable interest (whether a leasehold interest or otherwise) in, all personal or movable
property owned or leased, or purported to be owned or leased or otherwise held or used by them, except as would not, individually or in the aggregate, reasonably be expected to have an Aastra Material Adverse Effect. 

 

	 	(iii)	No Person has any right of first refusal, undertaking or commitment or any right or privilege capable of becoming such, to purchase any of the material assets owned by
Aastra or its Subsidiaries, or any part thereof or interest therein, except in connection with the Arrangement. 

  
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	 	(o)	Intellectual Property. 

  

	 	(i)	All material registrations throughout the world for Aastra Owned Intellectual Property have been disclosed in the Aastra Data Room. Each of the Aastra Owned
Intellectual Property which has been registered or applied for has been properly maintained and renewed by Aastra and its Subsidiaries in accordance with all applicable Laws except as would not, individually or in the aggregate, have or reasonably
be expected to have an Aastra Material Adverse Effect. 

  

	 	(ii)	Aastra and its Subsidiaries own all right, title and interest in the material Aastra Owned Technology and the material Aastra Information Technology. The material
Aastra Owned Intellectual Property and, to the knowledge of Aastra, any material Aastra Licensed Intellectual Property used in the business of Aastra and its Subsidiaries, is subsisting, in full force and effect, and has not been cancelled, expired,
or abandoned. 

  

	 	(iii)	Except as disclosed in the Aastra Data Room, the conduct of the business of Aastra and its Subsidiaries, as presently conducted, does not conflict with or result in
violation of any Intellectual Property Rights of any other Person except as would not, individually or in the aggregate, have or reasonably be expected to have an Aastra Material Adverse Effect. 

 

	 	(iv)	Except as disclosed in the Aastra Data Room, to the knowledge of Aastra, Aastra is not pursuing any third party in relation to such third party misappropriating,
infringing, diluting or violating any Aastra Owned Technology, and no legal action or other adversarial claims have been brought or threatened against any third party by Aastra and its material Subsidiaries in relation to such Aastra Owned
Technology which would reasonably be expected to have, individually or in the aggregate, an Aastra Material Adverse Effect. 

  

	 	(v)	Except as disclosed in the Aastra Data Room, to The knowledge of Aastra, none of the Aastra Owned Technology has been substantially developed with the assistance or use
of any funding from third parties or third party entities, including, but not limited to, funding from any Governmental Entity. 

  

	 	(p)	Employment Matters. 

  

	 	(i)	All of the Aastra Employee Share Plans are and have been established, registered, qualified and administered in accordance with all applicable Laws in all material
respects and in accordance with their terms, the terms of the material documents that support such Aastra Employee Share Plans and the terms of agreements between Aastra and its Subsidiaries and the employees (present and former) who are members of,
or beneficiaries under, such Aastra Employee Share Plans. 

  
 - 31 -

	 	(ii)	Except as would not reasonably be expected to have, individually or in the aggregate, an Aastra Material Adverse Effect, (A) all current obligations of Aastra
regarding the Aastra Employee Share Plans have been satisfied and (B) all contributions, premiums or Taxes required to be made or paid by Aastra by applicable Laws or under the terms of each Aastra Employee Share Plan have been made in a timely
fashion in accordance with applicable Laws and the terms of such Aastra Employee Share Plan. 

  

	 	(iii)	Except as disclosed in the Aastra Data Room, there are no (A) retention or change of control agreements or any other agreements providing for retention, severance,
change of control or termination payments to any director or executive officer or employee of Aastra and its Subsidiaries, or (B) plans, programs, bonus pools or other arrangement that would entitle any Aastra employee to a payment in
circumstances involving a change of control of Aastra. 

  

	 	(iv)	Except as provided in this Agreement or as disclosed in the Aastra Data Room, the execution, delivery and performance of this Agreement and the consummation of the
Arrangement will not (A) result in any material payment (including bonus, golden parachute, retirement, severance, unemployment compensation, or other benefit) becoming due or payable to any of the Aastra employees or result in an employee
having an entitlement to such payments upon resignation, (B) materially increase the compensation or benefits otherwise payable to any Aastra employee or (C) result in the acceleration of the time of payment or vesting of any material
benefits or entitlements otherwise available pursuant to any Aastra Employee Share Plan (except for outstanding Aastra Options, Aastra SARs and Aastra DSUs). 

 

	 	(v)	Except as disclosed in the Aastra Data Room, none of Aastra or any of its Subsidiaries has entered into any written agreement providing for severance or termination
payments to any director, officer or employee in connection with the termination of their position or their employment as a direct result of the transaction contemplated by this Agreement, or which is not terminable on the giving of reasonable
notice under applicable Law. 

  

	 	(vi)	Except as disclosed in the Aastra Data Room or as otherwise made available to Mitel, none of Aastra or any of its material Subsidiaries (A) is a party to any
collective bargaining agreement, or (B) is subject to any application for certification or, to the knowledge of Aastra, threatened or apparent union-organizing campaigns for employees not covered under a collective bargaining agreement. To the
knowledge of Aastra, no fact or event exists that is likely to give rise to a change in the representation in this Subsection 3.1(q)(vi) on or before the Effective Date. 

 

	 	(vii)	 Except as disclosed in the Aastra Data Room, none of Aastra or any of its Subsidiaries is subject to any claim or complaint or proceeding for wrongful
dismissal, constructive dismissal or any other tort claim or under any applicable Law, actual or, to the knowledge of Aastra, threatened, or any litigation actual, or to the knowledge of Aastra, threatened, relating to

  
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employment or termination of employment of employees or independent contractors, except for such claims or litigation which individually or in the aggregate would not be reasonably expected to
have an Aastra Material Adverse Effect. 

  

	 	(viii)	Aastra and its Subsidiaries are in material compliance with all applicable Laws with respect to employment and labour, including employment and labour standards,
occupational health and safety, employment equity, pay equity, accessibility, workers’ compensation, human rights, labour relations and privacy and there are no current, pending, or to the knowledge of Aastra, threatened proceedings before any
board or tribunal with respect to any of the areas listed herein, except where the failure to so operate would not have an Aastra Material Adverse Effect. 

  

	 	(ix)	Mitel has been provided with true and complete copies of all material Aastra Employee Share Plans and, except as disclosed in the Aastra Data Room, there are no
Contracts, commitments, agreements, arrangements or understandings between (A) Aastra or any of its Subsidiaries on the one hand and (B) any participant in an Aastra Employee Share Plan which would result in an Aastra Option vesting solely
as a result of the transaction contemplated by this Agreement (excluding as permitted by the Board of Directors of Aastra under the Aastra 2006 Option Plan). 

 

	 	(x)	The aggregate severance entitlements of the directors and the senior officers of Aastra (for purposes of this Section 3.1(p)(x), Francis N. Shen, Anthony P. Shen,
Allan J. Brett, Martin Derung and John Tobia) if they resign for good reason or are terminated without cause within 24 months of the Effective Date will not exceed $10 million. 

 

	 	(q)	Absence of Certain Changes or Events. Since December 31, 2012 and except as otherwise permitted by Section 5.1: 

 

	 	(i)	Aastra and its Subsidiaries have conducted their respective businesses only in the ordinary course of business consistent with past practice except as would not,
individually or in the aggregate, have or reasonably be expected to have an Aastra Material Adverse Effect and since September 30, 2013 in the ordinary course of business consistent with past practice; 

 

	 	(ii)	there has not been any acquisition or disposition by Aastra or any of its Subsidiaries of any material property or assets, except as disclosed in the Aastra Data Room;

  

	 	(iii)	no liability or obligation of any nature (whether absolute, accrued, contingent or otherwise) which has had, or is reasonably likely to have, an Aastra Material Adverse
Effect has been incurred; 

  

	 	(iv)	there has not been any event, circumstance or occurrence which has had, or is reasonably likely to give rise to, an Aastra Material Adverse Effect;

  
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	 	(v)	there has not been any material change in the accounting practices used by Aastra and its Subsidiaries except as disclosed in the interim financial statements for the
nine month period ending September 30, 2013; 

  

	 	(vi)	except for ordinary course adjustments, as disclosed in the Aastra Data Room (including as permitted under the Aastra Employee Share Plans) or contemplated by this
Agreement, there has not been any material increase in the salary, bonus, or other remuneration payable by Aastra or any of its Subsidiaries to any of their respective directors, officers, employees or consultants, and there has not been any
amendment or modification to the vesting or exercisability schedule or criteria, including any acceleration, right to accelerate or acceleration event or other entitlement under any stock option, restricted stock, deferred compensation or other
compensation award or any grant to such director, officer, employee or consultant of any increase in severance or termination pay or any increase or modification of any bonus, pension, insurance or benefit arrangement made to, for or with any of
such directors, officers, employees or consultants; 

  

	 	(vii)	except as publicly disclosed, there has not been any redemption, repurchase or other acquisition of Aastra Shares by Aastra, or any declaration, setting aside or
payment of any dividend or other distribution (whether in cash, shares or property) with respect to the Aastra Shares; 

  

	 	(viii)	there has not been a material change in the level of accounts receivable or payable, inventories or employees, other than those changes in the ordinary course of
business; 

  

	 	(ix)	except as disclosed in the Aastra Data Room, there has not been any entering into, or any material amendment of, any Material Contract of Aastra other than in the
ordinary course of business; and 

  

	 	(x)	except as disclosed in the Aastra Data Room, there has not been any satisfaction or settlement of any material claims or material liabilities that were not reflected in
Aastra’s audited financial statements, other than the settlement of claims or liabilities incurred in the ordinary course of business. 

  

	 	(r)	Litigation. To the knowledge of Aastra, there are no investigations by Governmental Entities, actions, suits or proceedings threatened, affecting or that would
reasonably be expected to affect Aastra or any of its Subsidiaries or affecting or that would reasonably be expected to affect any of their property or assets at Law or equity before or by any court or Governmental Entity which action, suit,
proceeding or investigation involves a possibility of any judgment against or liability of Aastra or any of its Subsidiaries which, if successful, would have an Aastra Material Adverse Effect or would significantly impede the ability of Aastra to
consummate the Arrangement. 

  
 - 34 -

	 	(s)	Taxes. 

 To the knowledge
of Aastra and except as disclosed in the Aastra Data Room: 
  

	 	(i)	each of Aastra and its Subsidiaries has duly and in a timely manner made or prepared all Tax Returns required to be made or prepared by it, and duly and in a timely
manner filed all Tax Returns required to be filed by it with the appropriate Governmental Entity, such Tax Returns were complete and correct in all material respects and Aastra and each of its Subsidiaries has paid all Taxes, including instalments
on account of Taxes for the current year required by applicable Law, which are due and payable by it whether or not assessed by the appropriate Governmental Entity and Aastra has provided adequate accruals in accordance with IFRS in the most
recently published financial statements of Aastra for any Taxes of Aastra and each of its Subsidiaries for the period covered by such financial statements that have not been paid whether or not shown as being due on any Tax Returns, except in each
case where the failure to do so would not reasonably be expected to have, individually or in the aggregate, an Aastra Material Adverse Effect. Except as would not reasonably be expected to have, individually or in the aggregate, an Aastra Material
Adverse Effect since such publication date, no material liability in respect of Taxes not reflected in such statements or otherwise provided for has been assessed, proposed to be assessed, incurred or accrued, other than in the ordinary course of
business; 

  

	 	(ii)	each of Aastra and its Subsidiaries has duly and timely withheld all Taxes required by Law to be withheld by it (including Taxes required to be withheld by it in
respect of any amount paid or credited or deemed to be paid or credited by it to or for the benefit of any Person) and has duly and timely remitted to the appropriate Governmental Entity such Taxes or other amounts required by Law to be remitted by
it, except where the failure to do so would not reasonably be expected to have, individually or in the aggregate, an Aastra Material Adverse Effect; 

  

	 	(iii)	each of Aastra and its Subsidiaries has duly and timely collected all amounts on account of any sales, use or transfer Taxes, including goods and services, harmonized
sales, provincial and territorial sales taxes and state and local taxes, required by Law to be collected by it and has duly and timely remitted to the appropriate Governmental Entity such amounts required by Law to be remitted by it, except where
the failure to do so would not reasonably be expected to have, individually or in the aggregate, an Aastra Material Adverse Effect; 

  

	 	(iv)	none of Aastra nor any of its Subsidiaries has made, prepared and/or filed any elections, designations or similar filings relating to Taxes or entered into any
agreement or other arrangement in respect of Taxes with a Governmental Entity that has effect for any period ending after the Effective Date which, individually or in the aggregate, would have an Aastra Material Adverse Effect;

  
 - 35 -

	 	(v)	there are no material proceedings, investigations, audits or claims now pending against Aastra or any of its Subsidiaries in respect of any Taxes and there are no
material matters under discussion, audit or appeal with any Governmental Entity relating to Taxes; 

  

	 	(vi)	to the extent that Aastra or any of its Subsidiaries has acquired property from a non-arm’s length Person within the meaning of the Tax Act: (A) for
consideration the value of which is less than the fair market value of the property at the time of acquisition; or (B) as a contribution of capital for which no shares were issued by the acquirer of the property, such acquisition has not
resulted and cannot reasonably be expected to result in an Aastra Material Adverse Effect; 

  

	 	(vii)	for the purposes of the Tax Act and any other relevant Tax purposes: 

  

	 	(A)	Aastra is resident in Canada and is not resident in any other country; and 

 

	 	(B)	each of its Subsidiaries is resident in the jurisdiction in which it was formed, and is not resident in any other country; 

 

	 	(viii)	there are no Liens for Taxes upon any properties or assets of Aastra or any of its Subsidiaries (other than Liens (A) relating to Taxes not yet due and payable and
for which adequate reserves have been recorded on the most recent balance sheet included in Aastra’s audited financial statements; and (B) which would not, individually or in the aggregate, have an Aastra Material Adverse Effect).

  

	 	(t)	Books and Records. The corporate records and minute books of Aastra and its Subsidiaries for the last three financial years have been maintained in all material
respects in accordance with all applicable Laws, and the minute books of Aastra and its Subsidiaries are complete and accurate in all material respects. The corporate minute books for Aastra and its Subsidiaries contain minutes of all meetings and
resolutions of the directors and securityholders held. The financial books and records and accounts of Aastra and its Subsidiaries for the last three financial years in all material respects have been maintained in accordance with good business
practices and in accordance with IFRS and with the accounting principles generally accepted in the country of domicile of each such entity, on a basis consistent with prior years. 

 

	 	(u)	Insurance. Policies of insurance are in force naming Aastra as an insured that adequately cover all risks as are customarily covered by businesses in the
industry in which Aastra operates. All such policies shall remain in force and effect (subject to taking into account insurance market conditions and offerings and industry practices) and shall not be cancelled or otherwise terminated as a result of
the transactions contemplated herein other than such cancellations as would not individually or in the aggregate have an Aastra Material Adverse Effect. 

  
 - 36 -

	 	(v)	Non-Arm’s Length Transactions. Except for employment or employment compensation agreements entered into in the ordinary course of business, there are no
current Contracts, commitments, agreements, arrangements or other transactions (including relating to indebtedness by Aastra or any of its Subsidiaries) between Aastra or any of its Subsidiaries on the one hand, and any (a) officer or director
of Aastra or, to the knowledge of Aastra, any of its Subsidiaries, or (b) any holder of record or, to the knowledge of Aastra, beneficial owner of five percent or more of the voting securities of Aastra, on the other hand.

  

	 	(w)	Benefit Plans. 

  

	 	(i)	Other than as disclosed in the Aastra Data Room or the Aastra Public Documents, there are no material pension or retirement income plans of Aastra.

  

	 	(ii)	The costs of funding the Aastra Benefit Plans are, in all material respects, described in the Aastra Data Room or the Aastra Public Documents. 

 

	 	(iii)	Each Aastra Benefit Plan has been established, registered, amended, funded, administered, and invested in all material respects in accordance with its terms and
applicable Laws and any contributions required to be made under each material Aastra Benefit Plan, as of the date hereof, have been timely made in accordance with the terms of each material Aastra Benefit Plan and applicable Laws, and all
obligations in respect of each Aastra Benefit Plan have been properly accrued and reflected in the audited consolidated financial statements for Aastra in accordance with IFRS as of and for the fiscal year ended on December 31, 2012, including
the notes thereto and the report by Aastra’s auditors thereon. All employer and employee payments, contributions and premiums required to be remitted, paid to or in respect of each Aastra Benefit Plan have been paid or remitted in a timely
fashion in accordance with its terms and all Laws in all material respects. To the knowledge of Aastra, there are no investigations by a Governmental Entity or material claims (other than routine claims for payment of benefits) pending or threatened
involving any Aastra Benefit Plan or its assets, and no facts exist which could reasonably be expected to give rise to any such investigation order or material claim (other than routine claims for payment of benefits). 

 

	 	(iv)	No event has occurred respecting any Aastra Benefit Plan which would entitle a Person (without the consent of Aastra) to wind-up or terminate any Aastra Benefit Plan in
whole or in part, except where such wind-up or termination would not reasonably be expected to have an Aastra Material Adverse Effect. 

  
 - 37 -

	 	(v)	To the knowledge of Aastra, there has been no amendment to, announcement by Aastra or any of its Subsidiaries relating to or change in employee participation, coverage,
or benefits provided under, any Aastra Benefit Plan which would increase materially the expense of maintaining such plan above the level of the expense incurred therefor for the most recent fiscal year. 

 

	 	(vi)	Except as disclosed in the Aastra Data Room, there are no material unfunded liabilities in respect of any Aastra Benefit Plan which provides pension benefits,
superannuation benefits or retirement savings, including any “registered pension plans” as that term is defined in the Income Tax Act, or any supplemental pension plans (including going concern unfunded liabilities, solvency deficiencies
or wind-up deficiencies, where applicable). 

  

	 	(vii)	No liabilities or obligations under any of the Aastra Benefit Plans in respect of any employees on disability would, individually or in the aggregate, reasonably be
expected to have an Aastra Material Adverse Effect. 

  

	 	(viii)	None of the Aastra Benefit Plans, or any insurance contract relating thereto, require or permit a retroactive increase in premiums or payments on termination of the
Aastra Benefit Plan or any insurance contract relating thereto, except where such increase or payments, individually or in the aggregate, would not have an Aastra Material Adverse Effect. 

 

	 	(ix)	All material data necessary to administer each Aastra Benefit Plan is in the possession of Aastra or its agents. 

 

	 	(x)	Restrictions on Business Activities. Except as disclosed in the Aastra Data Room, there is no agreement, judgment, injunction, order or decree binding upon
Aastra or any of its Subsidiaries that has or could reasonably be expected to have the effect of prohibiting, restricting or materially impairing any business practice of Aastra or any of its Subsidiaries or the conduct of business by Aastra or any
of its Subsidiaries as currently conducted (including following the transaction contemplated by this Agreement) other than such agreements, judgments, injunctions, orders or decrees which would not, individually or in the aggregate, reasonably be
expected to have an Aastra Material Adverse Effect. 

  

	 	(y)	 Material Contracts. To the knowledge of Aastra, Aastra and its Subsidiaries have performed in all material respects all respective obligations
required to be performed by them to date under the Material Contracts. To the knowledge of Aastra and except as disclosed in the Aastra Data Room, neither Aastra nor any of its Subsidiaries is in breach or default under any Material Contract to
which it is a party or bound, nor does Aastra have knowledge of any condition that with the passage of time or the giving of notice or both would result in such a breach or default, except in each case where any such breaches or defaults would not,
individually or in the aggregate, reasonably be expected to result in, or result in, 

  
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an Aastra Material Adverse Effect. None of Aastra or any of its Subsidiaries knows of, or has received written notice of, any breach or default under (nor, to the knowledge of Aastra, does there
exist any condition which with the passage of time or the giving of notice or both would result in such a breach or default under) any such Material Contract by any other party thereto except where any such violation or default would not,
individually or in the aggregate, reasonably be expected to result in, or result in, an Aastra Material Adverse Effect. To the knowledge of Aastra, all Material Contracts are legal, valid, binding and in full force and effect and are enforceable by
Aastra (or a Subsidiary of Aastra, as the case may be) in accordance with their respective terms (subject to bankruptcy, insolvency and other applicable Laws affecting creditors’ rights generally, and to general principles of equity) and are
the product of fair and arms’ length negotiations between the parties thereto. Except as disclosed in the Aastra Data Room, Aastra has not received any written or, to the knowledge of Aastra, other notice that any party to a Material Contract
intends to cancel, terminate or otherwise modify or not renew its relationship with Aastra or any of its Subsidiaries, and, to the knowledge of Aastra, no such action has been threatened, which, in either case, individually or in the aggregate,
would reasonably be expected to have an Aastra Material Adverse Effect. 

  

	 	(z)	Corrupt Practices Legislation. To the knowledge of Aastra, neither Aastra, its Subsidiaries or any of their respective officers, directors or employees acting on
behalf of Aastra or any of its Subsidiaries has taken, committed to take or been alleged to have taken any action which would cause Aastra or any of its Subsidiaries to be in violation of the United States’ Foreign Corrupt Practices Act
(and the regulations promulgated thereunder), the Corruption of Foreign Public Officials Act (Canada) (and the regulations promulgated thereunder) and the Bribery Act (United Kingdom) or any applicable Law of similar effect.

  

	 	(aa)	Confidentiality Agreements. Aastra has not waived the standstill or other provisions of any confidentiality or standstill agreements with persons other than
Mitel. 

  

	 	(bb)	Brokers; Expenses. Except for the fees to be paid to TD Securities Inc. pursuant to its engagement letter with Aastra dated October 31, 2013 (the aggregate
amount of fees as disclosed in the Aastra Data Room), none of Aastra, any of its Subsidiaries, or any of their respective officers, directors or employees has employed any broker, finder, investment banker, financial advisor or other person or
incurred any liability for any brokerage fees, commissions, finder’s fees, financial advisory fees or other similar fees in connection with the transactions contemplated by this Agreement. 

 

	3.2	Survival of Representations and Warranties 

The representations and warranties of Aastra contained in this Agreement shall not survive the completion of the Arrangement and shall expire and be
terminated on the earlier of the Effective Time and the date on which this Agreement is terminated in accordance with its terms. 

  
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 ARTICLE 4 
 REPRESENTATIONS AND WARRANTIES OF MITEL 
  

	4.1	Representations and Warranties 

 Except as
set forth in the Mitel Public Documents, Mitel hereby represents and warrants to Aastra as follows, and acknowledges that Aastra is relying upon such representations and warranties in connection with the entering into of this Agreement: 

 

	 	(a)	Organization and Qualification. Mitel is duly incorporated and validly existing under the CBCA and has the corporate power and authority to own its assets and
conduct its business as now owned and conducted. Mitel is duly qualified to carry on business and is in good standing in each jurisdiction in which its assets and properties, owned, leased, licensed or otherwise held, or the nature of its activities
makes such qualification necessary, and has all Authorizations, consents and approvals required to own, lease and operate its assets and properties as they are now being owned, leased and operated and to carry on its business as now conducted,
except where the failure to be so qualified will not, individually or in the aggregate, have a Mitel Material Adverse Effect. True and complete copies of the constating documents of Mitel have been provided to Aastra, and Mitel has not taken any
action to amend or supersede such documents. 

  

	 	(b)	Authority Relative to this Agreement. Mitel has the requisite corporate power and authority to enter into this Agreement and the agreements and other documents
to be entered into by it hereunder and to perform its obligations hereunder and thereunder. The execution and delivery of this Agreement and the agreements and other documents to be entered into by it hereunder and the consummation by Mitel of the
transactions contemplated hereunder and thereunder have been duly authorized by the Mitel Board and no other corporate proceedings on the part of Mitel are necessary to authorize this Agreement and the agreements and other documents to be entered
into by it hereunder other than Mitel Shareholder Approval. This Agreement has been duly executed and delivered by Mitel and constitutes a valid and binding obligation of Mitel, enforceable by Aastra against Mitel in accordance with its terms,
except as the enforcement thereof may be limited by bankruptcy, insolvency and other applicable Laws affecting the enforcement of creditors’ rights generally and subject to the qualification that equitable remedies may be granted only in the
discretion of a court of competent jurisdiction. 

  

	 	(c)	No Conflict; Required Filings and Consent. The execution and delivery by Mitel of this Agreement and the performance by it of its obligations hereunder and the
completion of the Arrangement will not: 

  

	 	(i)	subject to receipt of Regulatory Approvals, violate, conflict with or result in a breach of: 

 

	 	(A)	any provision of the articles, by-laws or other constating documents of Mitel or any of its Subsidiaries, except as would not, individually or in the aggregate, have or
reasonably be expected to have a Mitel Material Adverse Effect; 

  
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	 	(B)	any Material Contract or Authorization to which Mitel or any of its Subsidiaries is a party or by which Mitel or any of its Subsidiaries is bound, except as would not,
individually or in the aggregate, have or reasonably be expected to have a Mitel Material Adverse Effect; or 

  

	 	(C)	any Law to which Mitel or any of its Subsidiaries is subject or by which Mitel or any of its Subsidiaries is bound, except as would not, individually or in the
aggregate, have or reasonably be expected to have a Mitel Material Adverse Effect; 

  

	 	(ii)	subject to receipt of Regulatory Approvals, give rise to any right of termination, or the acceleration of any indebtedness, under any Material Contract or Authorization
to which Mitel or any of its Subsidiaries is a party, except as would not, individually or in the aggregate, have or reasonably be expected to have a Mitel Material Adverse Effect; or 

 

	 	(iii)	give rise to any rights of first refusal or rights of first offer, trigger any change of control provision or any restriction or limitation under any Material Contract
or Authorization, or result in the imposition of any Lien upon any of Mitel’s assets or the assets of any of its Subsidiaries, except as would not, individually or in the aggregate, have or reasonably be expected to have a Mitel Material
Adverse Effect. 

 Other than Regulatory Approvals, compliance with any applicable Laws, stock exchange rules and
policies, the Interim Order, the Final Order and the filing of the Certificate of Arrangement and Articles of Arrangement, no Authorization of, or filing with, any Governmental Entity is necessary on the part of Mitel or any of its Subsidiaries for
the consummation by Mitel of its obligations in connection with the Arrangement under this Agreement or for the completion of the Arrangement, except for such Authorizations and filings as to which the failure to obtain or make would not,
individually or in the aggregate, result in a Mitel Material Adverse Effect. 
  

	 	(d)	Subsidiaries. All of Mitel’s Subsidiaries or material interests in any Person have been disclosed in the Mitel Data Room. Each Subsidiary of Mitel is duly
organized and is validly existing under the Laws of its jurisdiction of incorporation or organization, has full corporate power and authority to own, lease or operate its assets and property as they are now being owned, leased and operated and
conduct its business as now owned and conducted by it and is duly qualified to carry on business in each jurisdiction in which the character of its properties or the nature of its activities makes such qualification necessary, except where the
failure to be so qualified would not have a Mitel Material Adverse Effect. Except as disclosed in the Mitel Data Room, Mitel beneficially owns, directly or indirectly, all of the issued and outstanding securities of each of its material
Subsidiaries. All of the outstanding shares owned (directly or indirectly) by Mitel in the capital of each of its material Subsidiaries that is a corporation are validly issued, fully-paid and non-assessable. 

  
 - 41 -

	 	(e)	Compliance with Laws. To the knowledge of Mitel: 

  

	 	(i)	the operations of Mitel and its Subsidiaries have been and are now conducted in compliance with all Laws of each jurisdiction, the Laws of which have been and are now
applicable to the operations of Mitel or of any of its Subsidiaries and none of Mitel or any of its Subsidiaries has received any notice of any alleged violation of any such Laws, other than non-compliance or violations which, individually or in the
aggregate, would not have a Mitel Material Adverse Effect; and 

  

	 	(ii)	none of Mitel or any of its Subsidiaries is in conflict with, or in default (including cross defaults) under or in violation of: (a) its articles or by-laws or
equivalent organizational documents; or (b) any Material Contract, except for failures which, individually or in the aggregate, would not have a Mitel Material Adverse Effect. 

 

	 	(f)	Authorizations. Mitel and its Subsidiaries have obtained all Authorizations necessary for the ownership, operation and use of the assets of Mitel and its
Subsidiaries or otherwise in connection with carrying on the business and operations of Mitel and its Subsidiaries in compliance with all applicable Laws, except where the failure to have any such Authorization, individually or in the aggregate,
would not have a Mitel Material Adverse Effect. Such Authorizations are in full force and effect in accordance with their terms, and Mitel and its Subsidiaries have fully complied with and are in compliance with all material Authorizations, except,
in each case, for such non-compliance which, individually or in the aggregate, would not have a Mitel Material Adverse Effect. To the knowledge of Mitel, there is no action, investigation or proceeding pending or threatened regarding any of the
material Authorizations. To the knowledge of Mitel, none of Mitel or any of its Subsidiaries has received any notice, whether written or oral, of revocation or non-renewal of any such Authorizations, or of any intention of any Person to revoke or
refuse to renew any of such Authorizations, except in each case, for revocations or non-renewals which, individually or in the aggregate, would not have a Mitel Material Adverse Effect and, to the knowledge of Mitel, all such Authorizations continue
to be effective in order for Mitel and its Subsidiaries to continue to conduct their respective businesses as they are currently being conducted. To the knowledge of Mitel, no Person other than Mitel or a Subsidiary thereof owns or has any
proprietary, financial or other interest (direct or indirect) in any of the Authorizations, except for interests which, individually or in the aggregate, would not have a Mitel Material Adverse Effect. 

  
 - 42 -

	 	(g)	Capitalization and Listing. 

  

	 	(i)	The authorized share capital of Mitel consists of an unlimited number of Mitel Shares and an unlimited number of preferred shares, issuable in series. As of the date of
this Agreement there are: (A) 53,900,060 Mitel Shares validly issued and outstanding as fully-paid and non-assessable shares of Mitel; (B) no preferred shares issued or outstanding; (C) 7,162,754 outstanding Mitel Options granted under the
Mitel Employee Share Plan providing for the issuance of 515,175 Mitel Shares upon the exercise thereof, (D) outstanding Mitel Warrants providing for the issuance of 2,478,326 Mitel Shares upon the exercise thereof. All Mitel Shares issuable
upon the exercise of rights under the Mitel Options and Mitel Warrants in accordance with their terms have been duly authorized and, upon issuance, will be validly issued as fully paid and non-assessable. The terms of the Mitel Options and Mitel
Warrants (including exercise price) have been provided to Aastra. Except for the Mitel Options and Mitel Warrants referred to in this Section 4.1(g)(i), there are no options, warrants, conversion privileges, calls or other rights, shareholder
rights plans, agreements, arrangements, commitments or obligations of Mitel or any of its Subsidiaries to issue or sell any shares in the capital of Mitel or of any of its Subsidiaries or securities or obligations of any kind convertible into,
exchangeable for or otherwise carrying the right or obligation to acquire any shares of Mitel or any of its Subsidiaries, and other than the Mitel Employee Share Plans, there are no equity or security based compensation arrangements maintained by
Mitel. In the 30 days prior to the date hereof, there have been no authorizations or new issuances under the Mitel Employee Share Plans, other than as disclosed in the Mitel Data Room. No Person is entitled to any pre-emptive or other similar right
granted by Mitel or any of its Subsidiaries. 

  

	 	(ii)	Mitel has provided to Aastra a schedule, as of the date hereof, aggregating all outstanding grants to holders of Mitel Options and the number, exercise price, vesting
schedule and expiration dates of each grant to such holders. All Mitel Shares that may be issued pursuant to the exercise of outstanding Mitel Options will, when issued in accordance with the terms of the Mitel Options be duly authorized, validly
issued, fully-paid and non-assessable and are not and will not be subject to or issued in violation of, any pre-emptive rights. 

  

	 	(iii)	As of the date hereof, there are no outstanding contractual obligations of Mitel or any of its Subsidiaries to repurchase, redeem or otherwise acquire any Mitel Shares
or any shares of any of its Subsidiaries. No Subsidiary of Mitel owns any Mitel Shares. 

  

	 	(iv)	No order ceasing or suspending trading in securities of Mitel or prohibiting the sale of such securities has been issued and is outstanding against Mitel or its
directors or officers. 

  
 - 43 -

	 	(v)	All outstanding securities of Mitel have been issued in material compliance with all applicable Laws. 

 

	 	(vi)	There are no bonds, debentures or other evidences of indebtedness of Mitel or its Subsidiaries outstanding having the right to vote (or that are convertible or
exercisable for securities having the right to vote) with Mitel Shareholders on any matter. 

  

	 	(h)	Shareholder and Similar Agreements. Except as disclosed in the Mitel Data Room, Mitel is not party to any shareholder, pooling, voting trust or other similar
agreement relating to the issued and outstanding shares in the capital of Mitel or any of its Subsidiaries. 

  

	 	(i)	Reporting Issuer Status and Stock Exchange Compliance. As of the date hereof, Mitel is a reporting issuer not in default (or the equivalent) under the Canadian
Securities Laws of each of the provinces and territories of Canada. There is no delisting, suspension of trading in or cease trading order with respect to any securities of Mitel. The Mitel Shares are listed and posted for trading on the TSX and
NASDAQ, and are not listed or quoted on any market other than the TSX and NASDAQ, and Mitel is in compliance in all material respects with the applicable listing and corporate governance rules and regulations of the TSX and NASDAQ.

  

	 	(j)	U.S. Securities Law Matters. 

  

	 	(i)	Mitel is a “foreign private issuer” as defined in Rule 3b-4 under the U.S. Exchange Act; 

 

	 	(ii)	Mitel is not an investment company registered or required to be registered under the U.S. Investment Company Act of 1940, as amended; and 

 

	 	(iii)	the Mitel Shares are registered pursuant to Section 12 of the U.S. Exchange Act and Mitel is in compliance with its reporting obligation pursuant to section 13 of
the U.S. Exchange Act. 

  

	 	(k)	WTO Investor. Mitel is a “WTO investor” within the meaning of the Investment Canada Act. 

 

	 	(l)	Reports. Mitel has filed true and correct copies of Mitel Public Documents that Mitel is required to file under Canadian Securities Laws. Mitel has filed all
other documents required to be filed by it with all applicable Governmental Entities, other than such documents that the failure to file would, individually or in the aggregate, not have a Mitel Material Adverse Effect. Mitel Public Documents at the
time filed (a) did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not
misleading; and (b) complied in all material respects with the requirements of applicable Canadian Securities Laws. Mitel has not filed any confidential material change report with any Governmental Entity which at the date hereof remains
confidential. 

  
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	 	(m)	Financial Statements. 

  

	 	(i)	The audited consolidated financial statements for Mitel as of and for each of the fiscal years ended on April 30, 2013 and 2012 including the notes thereto and the
interim consolidated financial statements for Mitel for the period ended July 31, 2013 including the notes thereto have been, and all financial statements of Mitel which are publicly disseminated by Mitel in respect of any subsequent periods
prior to the Effective Date have been prepared in accordance with U.S. GAAP applied on a basis consistent with prior periods and all applicable Laws and present fairly, in all material respects, the assets, liabilities (whether accrued, absolute,
contingent or otherwise), consolidated financial position and results of operations of Mitel and its Subsidiaries as of the respective dates thereof and its results of operations and cash flows for the respective periods covered thereby (except as
may be indicated expressly in the notes thereto). There are no outstanding loans made by Mitel or any of its Subsidiaries to any executive officer or director of Mitel. 

 

	 	(ii)	The draft, unaudited financial information contained in the Mitel Data Room with respect to Mitel’s results of operation for the three months ended
October 31, 2013 represents, as at the date of this Agreement, Mitel’s best estimate as to Mitel’s results of operations to be reported in Mitel’s publicly filed financial statements for such period. 

 

	 	(iii)	The management of Mitel has established and maintained a system of disclosure controls and procedures designed to provide reasonable assurance that information required
to be disclosed by Mitel in its annual filings, interim filings or other reports filed or submitted by it under the applicable Laws imposed by Governmental Entities is recorded, processed, summarized and reported within the time periods specified by
such Laws imposed by such Governmental Entities. Such disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed by Mitel in its annual filings, interim filings or other reports
filed or submitted under the applicable Laws imposed by Governmental Entities is accumulated and communicated to Mitel’s management, including its chief executive officers and chief financial officers (or Persons performing similar functions),
as appropriate to allow timely decisions regarding required disclosure. 

  

	 	(iv)	 Mitel maintains internal control over financial reporting. Such internal control over financial reporting is effective in providing reasonable
assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. GAAP and includes policies and procedures that: (A) pertain to

  
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the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of Mitel and its Subsidiaries; (B) provide reasonable
assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. GAAP, and that receipts and expenditures of Mitel and its Subsidiaries are being made only with authorizations of management
and directors of Mitel and its Subsidiaries; and (C) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the assets of Mitel or its Subsidiaries that could have a material
effect on its financial statements. To the knowledge of Mitel, as of the date of this Agreement: (x) there are no material weaknesses in the design and implementation or maintenance of internal controls over financial reporting of Mitel that
are reasonably likely to adversely affect the ability of Mitel to record, process, summarize and report financial information; and (y) there is no fraud, whether or not material, that involves management or other employees who have a
significant role in the internal control over financial reporting of Mitel. 

  

	 	(v)	To the knowledge of Mitel, none of Mitel, any of its Subsidiaries or, any director, officer, employee, auditor, accountant or representative of Mitel or any of its
Subsidiaries has received or otherwise had or obtained knowledge of any material complaint, allegation, assertion, or claim, whether written or oral, regarding the accounting or auditing practices, procedures, methodologies or methods of Mitel or
any of its Subsidiaries or their respective internal accounting controls, including any material complaint, allegation, assertion, or claim that Mitel or any of its Subsidiaries has engaged in questionable accounting or auditing practices, which has
not been resolved to the satisfaction of the audit committee of the Mitel Board. 

  

	 	(n)	Undisclosed Liabilities. None of Mitel or any of its Subsidiaries has any material liabilities or obligations of any nature, whether or not accrued, contingent
or otherwise, except for (a) liabilities and obligations that are specifically presented on the unaudited consolidated balance sheet of Mitel as of July 31, 2013 (the “Mitel Balance Sheet”) or disclosed in the notes
thereto; (b) those incurred in the ordinary course of business and not required to be set forth in the Mitel Balance Sheet under U.S. GAAP; (c) those incurred in the ordinary course of business since the date of the Mitel Balance Sheet and
consistent with past practice; and (d) those incurred in connection with the execution of this Agreement. 

  

	 	(o)	Real Property and Personal Property. 

  

	 	(i)	Mitel and its Subsidiaries do not own any real property. 

  

	 	(ii)	Mitel and its Subsidiaries have good and valid title to, or a valid and enforceable interest (whether a leasehold interest or otherwise) in, all personal or movable
property owned or leased, or purported to be owned or leased or otherwise held or used by them, except as would not, individually or in the aggregate, reasonably be expected to have a Mitel Material Adverse Effect. 

  
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	 	(iii)	No Person has any right of first refusal, undertaking or commitment or any right or privilege capable of becoming such, to purchase any of the material assets owned by
Mitel or its Subsidiaries, or any part thereof or interest therein, except in connection with the Arrangement. 

  

	 	(p)	Intellectual Property. 

  

	 	(i)	All material registrations throughout the world for Mitel Owned Intellectual Property have been disclosed in the Mitel Data Room. Each of the Mitel Owned Intellectual
Property which has been registered or applied for has been properly maintained and renewed by Mitel and its Subsidiaries in accordance with all applicable Laws except as would not, individually or in the aggregate, have or reasonably be expected to
have a Mitel Material Adverse Effect. 

  

	 	(ii)	Mitel and its Subsidiaries own all right, title and interest in the material Mitel Owned Technology and the material Mitel Information Technology. The material Mitel
Owned Intellectual Property and, to the knowledge of Mitel, any material Mitel Licensed Intellectual Property used in the business of Mitel and its Subsidiaries, is subsisting, in full force and effect, and has not been cancelled, expired, or
abandoned. 

  

	 	(iii)	The conduct of the business of Mitel and its Subsidiaries, as presently conducted, does not conflict with or result in violation of any Intellectual Property Rights of
any other Person except as would not, individually or in the aggregate, have or reasonably be expected to have a Mitel Material Adverse Effect. 

  

	 	(iv)	To the knowledge of Mitel, Mitel is not pursuing any third party in relation to such third party misappropriating, infringing, diluting or violating any Mitel Owned
Technology, and no legal action or other adversarial claims have been brought or threatened against any third party by Mitel and its material Subsidiaries in relation to such Mitel Owned Technology which would reasonably be expected to have,
individually or in the aggregate, a Mitel Material Adverse Effect. 

  

	 	(v)	Except as disclosed in the Mitel Data Room, to the knowledge of Mitel, none of the Mitel Owned Technology has been substantially developed with the assistance or use of
any funding from third parties or third party entities, including, but not limited to, funding from any Governmental Entity. 

  
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	 	(q)	Employment Matters. 

  

	 	(i)	All of the Mitel Employee Share Plans are and have been established, registered, qualified and administered in accordance with all applicable Laws in all material
respects and in accordance with their terms, the terms of the material documents that support such Mitel Employee Share Plans and the terms of agreements between Mitel and its Subsidiaries and the employees (present and former) who are members of,
or beneficiaries under, such Mitel Employee Share Plans. 

  

	 	(ii)	Except as would not reasonably be expected to have, individually or in the aggregate, a Mitel Material Adverse Effect, (A) all current obligations of Mitel
regarding the Mitel Employee Share Plans have been satisfied and (B) all contributions, premiums or Taxes required to be made or paid by Mitel by applicable Laws or under the terms of each Mitel Employee Share Plan have been made in a timely
fashion in accordance with applicable Laws and the terms of such Mitel Employee Share Plan. 

  

	 	(iii)	Except as disclosed in the Mitel Data Room, there are no (A) retention or change of control agreements or any other agreements providing for retention, severance,
change of control or termination payments to any director or executive officer or employee of Mitel and its Subsidiaries, or (B) plans, programs, bonus pools or other arrangement that would entitle any Mitel employee to a payment in
circumstances involving a change of control of Mitel. 

  

	 	(iv)	Except as provided in this Agreement, the execution, delivery and performance of this Agreement and the consummation of the Arrangement will not (A) result in any
material payment (including bonus, golden parachute, retirement, severance, unemployment compensation, or other benefit) becoming due or payable to any of the Mitel employees or result in an employee having an entitlement to such payments upon
resignation, (B) materially increase the compensation or benefits otherwise payable to any Mitel employee or (C) result in the acceleration of the time of payment or vesting of any material benefits or entitlements otherwise available
pursuant to any Mitel Employee Share Plan (except for outstanding Mitel Options). 

  

	 	(v)	None of Mitel or any of its Subsidiaries has entered into any written agreement providing for severance or termination payments to any director, officer or employee in
connection with the termination of their position or their employment as a direct result of the transaction contemplated by this Agreement, or which is not terminable on the giving of reasonable notice under applicable Law. 

 

	 	(vi)	 None of Mitel or any of its material Subsidiaries (A) is a party to any collective bargaining agreement, or (B) is subject to any application
for certification or, to the knowledge of Mitel, threatened or apparent union-organizing 

  
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campaigns for employees not covered under a collective bargaining agreement. To the knowledge of Mitel, no fact or event exists that is likely to give rise to a change in the representation in
this Subsection 4.1(q) on or before the Effective Date. 

  

	 	(vii)	None of Mitel or any of its Subsidiaries is subject to any claim or complaint or proceeding for wrongful dismissal, constructive dismissal or any other tort claim or
under any applicable Law, actual or, to the knowledge of Mitel, threatened, or any litigation actual, or to the knowledge of Mitel, threatened, relating to employment or termination of employment of employees or independent contractors, except for
such claims or litigation which individually or in the aggregate would not be reasonably expected to have a Mitel Material Adverse Effect. 

  

	 	(viii)	Mitel and its Subsidiaries are in material compliance with all applicable Laws with respect to employment and labour, including employment and labour standards,
occupational health and safety, employment equity, pay equity, accessibility, workers’ compensation, human rights, labour relations and privacy and there are no current, pending, or to the knowledge of Mitel, threatened proceedings before any
board or tribunal with respect to any of the areas listed herein, except where the failure to so operate would not have a Mitel Material Adverse Effect. 

  

	 	(ix)	Aastra has been provided with true and complete copies of all material Mitel Employee Share Plans and, except as disclosed in the Mitel Data Room, there are no
Contracts, commitments, agreements, arrangements or understandings between (A) Mitel or any of its Subsidiaries on the one hand and (B) any participant in a Mitel Employee Share Plan which would result in a Mitel Option vesting solely as a
result of the transaction contemplated by this Agreement. 

  

	 	(r)	Absence of Certain Changes or Events. Since April 30, 2013 and except as otherwise permitted by Section 5.2: 

 

	 	(i)	Mitel and its Subsidiaries have conducted their respective businesses only in the ordinary course of business consistent with past practice except as would not,
individually or in the aggregate, have or reasonably be expected to have a Mitel Material Adverse Effect and since July 31, 2013 in the ordinary course of business consistent with past practice; 

 

	 	(ii)	except as disclosed in the Mitel Data Room, there has not been any acquisition or disposition by Mitel or any of its Subsidiaries of any material property or assets;

  

	 	(iii)	no liability or obligation of any nature (whether absolute, accrued, contingent or otherwise) which has had, or is reasonably likely to have, a Mitel Material Adverse
Effect has been incurred; 

  
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	 	(iv)	there has not been any event, circumstance or occurrence which has had, or is reasonably likely to give rise to, a Mitel Material Adverse Effect;

  

	 	(v)	there has not been any material change in the accounting practices used by Mitel and its Subsidiaries; 

 

	 	(vi)	except for ordinary course adjustments, there has not been any material increase in the salary, bonus, or other remuneration payable by Mitel or any of its Subsidiaries
to any of their respective directors, officers, employees or consultants, and there has not been any amendment or modification to the vesting or exercisability schedule or criteria, including any acceleration, right to accelerate or acceleration
event or other entitlement under any stock option, restricted stock, deferred compensation or other compensation award or any grant to such director, officer, employee or consultant of any increase in severance or termination pay or any increase or
modification of any bonus, pension, insurance or benefit arrangement made to, for or with any of such directors, officers, employees or consultants; 

  

	 	(vii)	there has not been any redemption, repurchase or other acquisition of Mitel Shares by Mitel, or any declaration, setting aside or payment of any dividend or other
distribution (whether in cash, shares or property) with respect to the Mitel Shares; 

  

	 	(viii)	there has not been a material change in the level of accounts receivable or payable, inventories or employees, other than those changes in the ordinary course of
business; 

  

	 	(ix)	except as disclosed in the Mitel Data Room, there has not been any entering into, or any material amendment of, any Material Contract of Mitel other than in the
ordinary course of business; and 

  

	 	(x)	there has not been any satisfaction or settlement of any material claims or material liabilities that were not reflected in Mitel’s audited financial statements,
other than the settlement of claims or liabilities incurred in the ordinary course of business. 

  

	 	(s)	Litigation. To the knowledge of Mitel, there are no investigations by Governmental Entities, actions, suits or proceedings threatened, affecting or that would
reasonably be expected to affect Mitel or any of its Subsidiaries or affecting or that would reasonably be expected to affect any of their property or assets at Law or equity before or by any court or Governmental Entity which action, suit,
proceeding or investigation involves a possibility of any judgment against or liability of Mitel or any of its Subsidiaries which, if successful, would have a Mitel Material Adverse Effect or would significantly impede the ability of Mitel to
consummate the Arrangement. 

  
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	 	(t)	Taxes. 

 To the knowledge
of Mitel: 
  

	 	(i)	each of Mitel and its Subsidiaries has duly and in a timely manner made or prepared all Tax Returns required to be made or prepared by it, and duly and in a timely
manner filed all Tax Returns required to be filed by it with the appropriate Governmental Entity, such Tax Returns were complete and correct in all material respects and Mitel and each of its Subsidiaries has paid all Taxes, including instalments on
account of Taxes for the current year required by applicable Law, which are due and payable by it whether or not assessed by the appropriate Governmental Entity and Mitel has provided adequate accruals in accordance with U.S. GAAP in the most
recently published financial statements of Mitel for any Taxes of Mitel and each of its Subsidiaries for the period covered by such financial statements that have not been paid whether or not shown as being due on any Tax Returns, except in each
case where the failure to do so would not reasonably be expected to have, individually or in the aggregate, a Mitel Material Adverse Effect. Except as would not reasonably be expected to have, individually or in the aggregate, a Mitel Material
Adverse Effect since such publication date, no material liability in respect of Taxes not reflected in such statements or otherwise provided for has been assessed, proposed to be assessed, incurred or accrued, other than in the ordinary course of
business; 

  

	 	(ii)	each of Mitel and its Subsidiaries has duly and timely withheld all Taxes required by Law to be withheld by it (including Taxes required to be withheld by it in respect
of any amount paid or credited or deemed to be paid or credited by it to or for the benefit of any Person) and has duly and timely remitted to the appropriate Governmental Entity such Taxes or other amounts required by Law to be remitted by it,
except where the failure to do so would not reasonably be expected to have, individually or in the aggregate, a Mitel Material Adverse Effect; 

  

	 	(iii)	each of Mitel and its Subsidiaries has duly and timely collected all amounts on account of any sales, use or transfer Taxes, including goods and services, harmonized
sales, provincial and territorial sales taxes and state and local taxes, required by Law to be collected by it and has duly and timely remitted to the appropriate Governmental Entity such amounts required by Law to be remitted by it, except where
the failure to do so would not reasonably be expected to have, individually or in the aggregate, a Mitel Material Adverse Effect; 

  

	 	(iv)	none of Mitel nor any of its Subsidiaries has made, prepared and/or filed any elections, designations or similar filings relating to Taxes or entered into any agreement
or other arrangement in respect of Taxes with a Governmental Entity that has effect for any period ending after the Effective Date which, individually or in the aggregate, would have a Mitel Material Adverse Effect; 

  
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	 	(v)	there are no material proceedings, investigations, audits or claims now pending against Mitel or any of its Subsidiaries in respect of any Taxes and, other than as
disclosed in the Mitel Data Room, there are no material matters under discussion, audit or appeal with any Governmental Entity relating to Taxes; 

  

	 	(vi)	to the extent that Mitel or any of its Subsidiaries has acquired property from a non-arm’s length Person within the meaning of the Tax Act: (A) for
consideration the value of which is less than the fair market value of the property at the time of acquisition; or (B) as a contribution of capital for which no shares were issued by the acquirer of the property, such acquisition has not
resulted and cannot reasonably be expected to result in a Mitel Material Adverse Effect; 

  

	 	(vii)	for the purposes of the Tax Act and any other relevant Tax purposes: 

  

	 	(A)	Mitel is resident in Canada and is not resident in any other country; and 

  

	 	(B)	each of its Subsidiaries is resident in the jurisdiction in which it was formed, and is not resident in any other country, except for branch operations as disclosed in
the Mitel Data Room; 

  

	 	(viii)	there are no Liens for Taxes upon any properties or assets of Mitel or any of its Subsidiaries (other than Liens (A) relating to Taxes not yet due and payable and
for which adequate reserves have been recorded on the most recent balance sheet included in Mitel’s audited financial statements; and (B) which would not, individually or in the aggregate, have a Mitel Material Adverse Effect).

  

	 	(u)	Books and Records. The corporate records and minute books of Mitel and its Subsidiaries for the last three financial years have been maintained in all material
respects in accordance with all applicable Laws, and the minute books of Mitel and its Subsidiaries are complete and accurate in all material respects. The corporate minute books for Mitel and its Subsidiaries contain minutes of all meetings and
resolutions of the directors and securityholders held. The financial books and records and accounts of Mitel and its Subsidiaries for the last three financial years in all material respects have been maintained in accordance with good business
practices and in accordance with U.S. GAAP and with the accounting principles generally accepted in the country of domicile of each such entity, on a basis consistent with prior years. 

  
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	 	(v)	Insurance. Policies of insurance are in force naming Mitel as an insured that adequately cover all risks as are customarily covered by businesses in the industry
in which Mitel operates. All such policies shall remain in force and effect (subject to taking into account insurance market conditions and offerings and industry practices) and shall not be cancelled or otherwise terminated as a result of the
transactions contemplated herein other than such cancellations as would not individually or in the aggregate have a Mitel Material Adverse Effect. 

  

	 	(w)	Non-Arm’s Length Transactions. Except for employment or employment compensation agreements entered into in the ordinary course of business and except for
other agreements and transactions disclosed in the Mitel Data Room or publicly disclosed, there are no current Contracts, commitments, agreements, arrangements or other transactions (including relating to indebtedness by Mitel or any of its
Subsidiaries) between Mitel or any of its Subsidiaries on the one hand, and any (a) officer or director of Mitel or, to the knowledge of Mitel, any of its Subsidiaries, or (b) any holder of record or, to the knowledge of Mitel, beneficial
owner of five percent or more of the voting securities of Mitel, on the other hand. 

  

	 	(x)	Benefit Plans. 

  

	 	(i)	Other than as disclosed in the Mitel Data Room or the Mitel Public Documents, there are no material pension or retirement income plans of Mitel.

  

	 	(ii)	The costs of funding the Mitel Benefit Plans are, in all material respects, described in the Mitel Data Room or the Mitel Public Documents. 

 

	 	(iii)	Each Mitel Benefit Plan has been established, registered, amended, funded, administered, and invested in all material respects in accordance with its terms and
applicable Laws and any contributions required to be made under each material Mitel Benefit Plan, as of the date hereof, have been timely made in accordance with the terms of each material Mitel Benefit Plan and applicable Laws, and all obligations
in respect of each Mitel Benefit Plan have been properly accrued and reflected in the audited consolidated financial statements for Mitel in accordance with U.S. GAAP as of and for the fiscal year ended on April 30, 2013, including the notes
thereto and the report by Mitel’s auditors thereon. All employer and employee payments, contributions and premiums required to be remitted, paid to or in respect of each Mitel Benefit Plan have been paid or remitted in a timely fashion in
accordance with its terms and all Laws in all material respects. To the knowledge of Mitel, there are no investigations by a Governmental Entity or material claims (other than routine claims for payment of benefits) pending or threatened involving
any Mitel Benefit Plan or its assets, and no facts exist which could reasonably be expected to give rise to any such investigation order or material claim (other than routine claims for payment of benefits). 

 

	 	(iv)	No event has occurred respecting any Mitel Benefit Plan which would entitle a Person (without the consent of Mitel) to wind-up or terminate any Mitel Benefit Plan in
whole or in part, except where such wind-up or termination would not reasonably be expected to have a Mitel Material Adverse Effect. 

  
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	 	(v)	To the knowledge of Mitel, there has been no amendment to, announcement by Mitel or any of its Subsidiaries relating to or change in employee participation, coverage,
or benefits provided under, any Mitel Benefit Plan which would increase materially the expense of maintaining such plan above the level of the expense incurred therefor for the most recent fiscal year. 

 

	 	(vi)	Except as disclosed in the Mitel Data Room, there are no material unfunded liabilities in respect of any Mitel Benefit Plan which provides pension benefits,
superannuation benefits or retirement savings, including any “registered pension plans” as that term is defined in the Income Tax Act, or any supplemental pension plans (including going concern unfunded liabilities, solvency deficiencies
or wind-up deficiencies, where applicable). 

  

	 	(vii)	No liabilities or obligations under any of the Mitel Benefit Plans in respect of any employees on disability would, individually or in the aggregate, reasonably be
expected to have a Mitel Material Adverse Effect. 

  

	 	(viii)	None of the Mitel Benefit Plans, or any insurance contract relating thereto, require or permit a retroactive increase in premiums or payments on termination of the
Mitel Benefit Plan or any insurance contract relating thereto, except where such increase or payments, individually or in the aggregate, would not have a Mitel Material Adverse Effect. 

 

	 	(ix)	All material data necessary to administer each Mitel Benefit Plan is in the possession of Mitel or its agents. 

 

	 	(y)	Restrictions on Business Activities. There is no agreement, judgment, injunction, order or decree binding upon Mitel or any of its Subsidiaries that has or could
reasonably be expected to have the effect of prohibiting, restricting or materially impairing any business practice of Mitel or any of its Subsidiaries or the conduct of business by Mitel or any of its Subsidiaries as currently conducted (including
following the transaction contemplated by this Agreement) other than such agreements, judgments, injunctions, orders or decrees which would not, individually or in the aggregate, reasonably be expected to have a Mitel Material Adverse Effect.

  

	 	(z)	 Material Contracts. To the knowledge of Mitel, Mitel and its Subsidiaries have performed in all material respects all respective obligations
required to be performed by them to date under the Material Contracts. To the knowledge of Mitel, neither Mitel nor any of its Subsidiaries is in breach or default under any Material Contract to which it is a party or bound, nor does Mitel have
knowledge of any condition that with the passage of time or the giving of notice or both would result in such a breach or default, except in each case where any such 

  
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breaches or defaults would not, individually or in the aggregate, reasonably be expected to result in, or result in, a Mitel Material Adverse Effect. None of Mitel or any of its Subsidiaries
knows of, or has received written notice of, any breach or default under (nor, to the knowledge of Mitel, does there exist any condition which with the passage of time or the giving of notice or both would result in such a breach or default under)
any such Material Contract by any other party thereto except where any such violation or default would not, individually or in the aggregate, reasonably be expected to result in, or result in, a Mitel Material Adverse Effect. To the knowledge of
Mitel, all Material Contracts are legal, valid, binding and in full force and effect and are enforceable by Mitel (or a Subsidiary of Mitel, as the case may be) in accordance with their respective terms (subject to bankruptcy, insolvency and other
applicable Laws affecting creditors’ rights generally, and to general principles of equity) and are the product of fair and arms’ length negotiations between the parties thereto. Mitel has not received any written or, to the knowledge of
Mitel, other notice that any party to a Material Contract intends to cancel, terminate or otherwise modify or not renew its relationship with Mitel or any of its Subsidiaries, and, to the knowledge of Mitel, no such action has been threatened,
which, in either case, individually or in the aggregate, would reasonably be expected to have a Mitel Material Adverse Effect. 

  

	 	(aa)	Corrupt Practices Legislation. To the knowledge of Mitel, neither Mitel, its Subsidiaries or any of their respective officers, directors or employees acting on
behalf of Mitel or any of its Subsidiaries has taken, committed to take or been alleged to have taken any action which would cause Mitel or any of its Subsidiaries to be in violation of the United States’ Foreign Corrupt Practices Act
(and the regulations promulgated thereunder), the Corruption of Foreign Public Officials Act (Canada) (and the regulations promulgated thereunder) and the Bribery Act (United Kingdom) or any applicable Law of similar effect.

  

	 	(bb)	Brokers; Expenses. Except for the fees to be paid to Jefferies LLC pursuant to its engagement letter with Mitel dated September 12, 2013 (the aggregate
amount of fees as disclosed in the Mitel Data Room), none of Mitel, any of its Subsidiaries, or any of their respective officers, directors or employees has employed any broker, finder, investment banker, financial advisor or other person or
incurred any liability for any brokerage fees, commissions, finder’s fees, financial advisory fees or other similar fees in connection with the transactions contemplated by this Agreement. 

 

	 	(cc)	 Mitel Financing. The Mitel Commitment Letter is in full force and effect and constitutes a legal, valid and binding obligation of Mitel and, to
the knowledge of Mitel, the other parties thereto (subject in each case to the effect of bankruptcy, insolvency, receivership or similar laws relating to or affecting creditors’ rights generally and to general equity principles and subject to
the inclusion of an exclusive jurisdiction of New York courts clause contained therein). No event has occurred which would constitute a breach or default (or with notice or lapse of time or both would constitute a default) by Mitel under the Mitel
Commitment Letter, or, to the knowledge of Mitel, the other parties thereto. Assuming the satisfaction of the conditions to the Arrangement as set out in this Agreement, 

  
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upon receipt of the proceeds contemplated by the Mitel Commitment Letter, Mitel will have access to sufficient cash funds (including available cash held by Aastra and its Subsidiaries) and
borrowing capacity to pay all amounts to be paid by it pursuant to this Agreement and to perform its obligations hereunder. A true, complete and correct copy of the Mitel Commitment Letter (other than the fee letter component thereof) has been
provided to Aastra. 

  

	4.2	Survival of Representations and Warranties 

The representations and warranties of Mitel contained in this Agreement shall not survive the completion of the Arrangement and shall expire and be
terminated on the earlier of the Effective Time and the date on which this Agreement is terminated in accordance with its terms. 

ARTICLE 5 

COVENANTS 
  

	5.1	Covenants of Aastra Regarding the Conduct of Business 

 Aastra covenants and agrees that during the period from the date of this Agreement until the earlier of the Effective Date and the time that this Agreement is terminated in accordance with its terms,
unless Mitel shall otherwise agree in writing (such agreement not be unreasonably withheld or delayed) or as otherwise expressly contemplated or permitted by this Agreement or Applicable Law: 

 

	 	(a)	Aastra shall, and shall cause each of its Subsidiaries to, conduct its and their respective businesses only in, not take any action except in, and maintain their
respective facilities in, the ordinary course of business consistent with past practice and to use commercially reasonable efforts to preserve intact its and their present business organization and goodwill, to preserve intact Aastra and its assets,
to keep available the services of its officers and employees as a group and to maintain relationships consistent with past practice with customers, employees, Governmental Entities and others having business relationships with them;

  

	 	(b)	without limiting the generality of Section 5.1(a), Aastra shall not, and shall cause each of its Subsidiaries not to, directly or indirectly:

  

	 	(i)	amend or propose to amend its articles, by-laws or other constating documents; 

 

	 	(ii)	declare, set aside or pay any dividend or other distribution (whether in cash, securities or property or any combination thereof) in respect of any Aastra Shares,
except for (A) the previously announced quarterly dividend payable on November 14, 2013; or (B) such other dividends payable in Aastra Shares where the Consideration is appropriately adjusted to reflect the increased number of Aastra
Shares resulting from such dividend, which adjustment shall occur automatically in the event of any such dividend and the Parties agree to amend the Plan of Arrangement to reflect such adjustment; 

  
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	 	(iii)	issue, sell, grant, award, pledge, dispose of, encumber or agree to issue, sell, grant, award, pledge, dispose of or encumber any Aastra Shares, any Aastra Options,
stock appreciation rights, or any warrants, calls, conversion privileges or rights of any kind to acquire any Aastra Shares or other securities or any shares of its Subsidiaries (including, for greater certainty, Aastra Options), other than
(A) pursuant to the exercise of existing Aastra Options in accordance with their terms and (B) in the ordinary course of business consistent with past practice; 

 

	 	(iv)	split, combine or reclassify any outstanding Aastra Shares or the securities of any of its Subsidiaries; 

 

	 	(v)	redeem, purchase or offer to purchase Aastra Shares or other securities of Aastra or any securities of its Subsidiaries; 

 

	 	(vi)	amend the terms of any securities of Aastra or any of its Subsidiaries; 

  

	 	(vii)	adopt a plan of liquidation or resolutions providing for the liquidation or dissolution of Aastra or any of its Subsidiaries; 

 

	 	(viii)	reorganize, amalgamate or merge Aastra or its Subsidiaries with any other Person; 

 

	 	(ix)	except in the ordinary course of business consistent with past practice, sell, pledge, lease, dispose of, mortgage, licence, encumber or otherwise transfer or agree to
sell, pledge, lease, dispose of, mortgage, licence, encumber or otherwise transfer any assets of Aastra or any of its Subsidiaries or any interest in any assets of Aastra and its Subsidiaries having a value greater than $1,000,000 in the aggregate;

  

	 	(x)	acquire or agree to acquire any Person, or make any investment either by purchase of shares or securities, contributions of capital (other than to wholly-owned
Subsidiaries and other than in relation to capital expenditures as referred to in paragraph (xi) below), property transfer or purchase of any property or assets of any other Person that has a value greater than $1,000,000 in the aggregate
except as disclosed in the Aastra Data Room; 

  

	 	(xi)	incur any capital expenditures or enter into any agreement obligating Aastra or its Subsidiaries to provide for future capital expenditures involving payments in
aggregate in excess of $7,000,000; 

  

	 	(xii)	except for expenses incurred in relation to the transactions contemplated by this Agreement, incur business expenses other than in the ordinary course of business
consistent with past practice; 

  

	 	(xiii)	make any changes in financial accounting methods, principles, policies or practices, except as required, in each case, by IFRS or by applicable Law;

  
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	 	(xiv)	reduce the stated capital of the shares of Aastra or any of its Subsidiaries; 

 

	 	(xv)	enter into any agreements or other transactions with any officer or director of Aastra or its Subsidiaries except as disclosed in the Aastra Data Room;

  

	 	(xvi)	except in the ordinary course of business consistent with past practice, incur, create, assume or otherwise become liable for any indebtedness for borrowed money or any
other material liability or obligation or issue any debt securities, or guarantee, endorse or otherwise become responsible for, the obligations of any other Person or make any loans or advances; 

 

	 	(xvii)	except in the ordinary course of business consistent with past practice, pay, discharge, settle, satisfy, compromise, waive, assign or release any claims, liabilities
or obligations other than: 

  

	 	(A)	the payment, discharge or satisfaction, in the ordinary course of business, of liabilities reflected or reserved against in Aastra’s financial statements (or in
those of any of its Subsidiaries) or incurred in the ordinary course of business; or 

  

	 	(B)	where the relevant claim, liability or obligation is less than $2,000,000, or payment of any fees related to the Arrangement; 

 

	 	(xviii)	other than in the ordinary course of business consistent with past practice (A) enter into any agreement that, if entered into prior to the date hereof, would have
been a Material Contract or that is otherwise material to Aastra and its Subsidiaries, considered as a whole; or (B) modify, amend in any material respect, transfer or terminate any Material Contract or Contract that is otherwise material to
Aastra and its Subsidiaries considered as a whole, or waive, release, or assign any material rights or claims thereto or thereunder; 

  

	 	(xix)	enter into or terminate any hedges, derivatives, swaps or other financial instruments or like transaction, other than in the ordinary course of business consistent with
past practice; 

  

	 	(xx)	materially change the business of Aastra or its Subsidiaries; 

  

	 	(xxi)	 (A) increase any severance, change of control or termination pay to (or amend any existing arrangement relating to the foregoing with) any director,
officer or employee of Aastra or any of its Subsidiaries; (B) increase benefits payable under any existing severance or termination pay policies or employment agreements; (C) accelerate vesting or amend or waive any performance or vesting
criteria under the Aastra Employee Share Plans or Aastra Benefit Plans or any grants made thereunder; (D) increase the coverage, contributions, funding requirements or benefits available under any Aastra Benefit Plan or create any new plan
which would be considered to be an Aastra Benefit Plan once created or (E)

  
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except in the ordinary course of business consistent with past practice, increase compensation, bonus levels or other benefits payable to any employee of Aastra or any of its Subsidiaries, but
not including, for the avoidance of doubt, any director or executive officer of Aastra or any of its Subsidiaries; 

  

	 	(xxii)	adopt or amend or make any contribution (other than contributions consistent with past practice for existing plans) to any bonus, profit sharing, option, pension,
retirement, deferred compensation, insurance, retention, incentive compensation, other compensation or other similar plan, agreement, trust, fund or arrangement for the benefit of employees, except as is necessary to comply with applicable Law or
non-discretionary requirements of pre-existing plans; 

  

	 	(xxiii)	take any action or fail to take any action which action or failure to act would reasonably be expected to cause any Governmental Entities to institute proceedings for
the suspension of, or the revocation or limitation of rights under, any material Authorizations necessary to conduct its businesses as now conducted; or 

  

	 	(xxiv)	take any action or fail to take any action that is intended to, or would reasonably be expected to, individually or in the aggregate, prevent, materially delay or
materially impede the ability of Aastra or Mitel to consummate the Arrangement or the transactions contemplated by this Agreement; 

  

	 	(c)	Aastra shall use all commercially reasonable efforts to cause its current insurance (or re-insurance) policies not to be cancelled or terminated or any of the coverage
thereunder to lapse, unless simultaneously with such termination, cancellation or lapse, replacement policies underwritten by insurance and reinsurance companies of nationally recognized standing providing coverage equal to or greater than the
coverage under the cancelled, terminated or lapsed policies for substantially similar premiums are in full force and effect; 

  

	 	(d)	Aastra and each of its Subsidiaries shall: 

  

	 	(i)	duly and timely file all Tax Returns required to be filed by it on or after the date hereof and all such Tax Returns will be true, complete and correct in all material
respects; 

  

	 	(ii)	timely withhold, collect, remit and pay all Taxes which are to be withheld, collected, remitted or paid by it to the extent due and payable; 

 

	 	(iii)	not amend any Tax Return or change any of its methods of reporting income, deductions or accounting for income Tax purposes from those employed in the preparation of
its income tax return for the taxation year ended December 31, 2012, except as may be required by applicable Laws; 

  
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	 	(iv)	not make or revoke any material election relating to Taxes, other than any election that has yet to be made in respect of any event or circumstance occurring prior to
the date of the Agreement; 

  

	 	(v)	not enter into any Tax sharing, Tax allocation or Tax indemnification agreement; and 

 

	 	(vi)	not make a request for a Tax ruling to any Governmental Entity. 

  

	 	(e)	Aastra shall use commercially reasonable efforts to maintain and preserve all of its rights under each of its and its Subsidiaries Authorizations and shall not solicit
or encourage any Governmental Entity to make additions to the obligations under any existing or future Authorization (except to the extent necessary for Aastra to continue operating its business in accordance with applicable Laws in which case
Aastra shall consult with Mitel prior to soliciting or encouraging such additions and shall, acting reasonably, take into account Mitel’s reasonable comments); 

 

	 	(f)	Aastra shall not authorize, propose, enter into or modify any contract, agreement, commitment or arrangement, to do any of the matters prohibited by the other
subsections of this Section 5.1. 

  

	5.2	Covenants of Mitel Regarding the Conduct of Business 

 Mitel covenants and agrees that during the period from the date of this Agreement until the earlier of the Effective Date and the time that this Agreement is terminated in accordance with its terms,
unless Aastra shall otherwise agree in writing (such agreement not to be unreasonably withheld or delayed) or as otherwise expressly contemplated or permitted by this Agreement or Applicable Law: 

 

	 	(a)	Mitel shall, and shall cause each of its Subsidiaries to, conduct its and their respective businesses only in, not take any action except in, and maintain their
respective facilities in, the ordinary course of business consistent with past practice and to use commercially reasonable efforts to preserve intact its and their present business organization and goodwill, to preserve intact Mitel and its assets,
to keep available the services of its officers and employees as a group and to maintain relationships consistent with past practice with customers, employees, Governmental Entities and others having business relationships with them;

  

	 	(b)	without limiting the generality of Section 5.2(a), Mitel shall not, directly or indirectly: 

 

	 	(i)	amend or propose to amend its articles, by-laws or other constating documents; 

 

	 	(ii)	declare, set aside or pay any dividend or other distribution (whether in cash, securities or property or any combination thereof) in respect of any Mitel Shares, except
for such dividends payable in Mitel Shares where the Consideration is appropriately adjusted to reflect the increased number of Mitel Shares resulting from such dividend, which adjustment shall occur automatically in the event of any such dividend
and the Parties agree to amend the Plan of Arrangement to reflect such adjustment; 

  
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	 	(iii)	issue, sell, grant, award, pledge, dispose of, encumber or agree to issue, sell, grant, award, pledge, dispose of or encumber any Mitel Shares, any Mitel Options
(except for the granting of Mitel Options to new employees or directors in the ordinary course of business consistent with past practice or as disclosed in the Mitel Data Room), Mitel Warrants, stock appreciation rights, or any warrants, calls,
conversion privileges or rights of any kind to acquire any Mitel Shares or other securities or any shares of its Subsidiaries (including, for greater certainty, Mitel Options and Mitel Warrants), other than pursuant to the exercise of existing Mitel
Options and Warrants in accordance with their terms; 

  

	 	(iv)	split, combine or reclassify any outstanding Mitel Shares; 

  

	 	(v)	redeem, purchase or offer to purchase Mitel Shares or other securities of Mitel; 

 

	 	(vi)	amend the terms of any securities of Mitel or any of its Subsidiaries; 

  

	 	(vii)	adopt a plan of liquidation or resolutions providing for the liquidation or dissolution of Mitel; 

 

	 	(viii)	reorganize, amalgamate or merge Mitel or its Subsidiaries with any other Person, except as disclosed in the Mitel Data Room; 

 

	 	(ix)	except in the ordinary course of business consistent with past practice or as disclosed in the Mitel Data Room, sell, pledge, lease, dispose of, mortgage, licence,
encumber or otherwise transfer or agree to sell, pledge, lease, dispose of, mortgage, licence, encumber or otherwise transfer any assets of Mitel or any of its Subsidiaries or any interest in any assets of Mitel and its Subsidiaries having a value
greater than $1,000,000 in the aggregate; 

  

	 	(x)	acquire or agree to acquire any Person, or make any investment either by purchase of shares or securities, contributions of capital (other than to wholly-owned
Subsidiaries and other than in relation to capital expenditures as referred to in paragraph (xi) below), property transfer or purchase of any property or assets of any other Person that has a value greater than $1,000,000 in the aggregate
except as disclosed in the Mitel Data Room; 

  

	 	(xi)	except as disclosed in the Mitel Data Room, incur any capital expenditures or enter into any agreement obligating Mitel or its Subsidiaries to provide for future
capital expenditures involving payments in aggregate in excess of $7,000,000; 

  
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	 	(xii)	except for expenses incurred in relation to the transactions contemplated by this Agreement, incur business expenses other than in the ordinary course of business
consistent with past practice; 

  

	 	(xiii)	make any changes in financial accounting methods, principles, policies or practices, except as required, in each case, by U.S. GAAP or by applicable Law;

  

	 	(xiv)	reduce the stated capital of the shares of Mitel; 

  

	 	(xv)	enter into any agreements or other transactions with any officer or director of Mitel or its Subsidiaries except as disclosed in the Mitel Data Room;

  

	 	(xvi)	except in the ordinary course of business consistent with past practice and except for actions taken in connection with the Mitel Financing, incur, create, assume or
otherwise become liable for any indebtedness for borrowed money or any other material liability or obligation or issue any debt securities, or guarantee, endorse or otherwise become responsible for, the obligations of any other Person or make any
loans or advances, except in the ordinary course of business consistent with past practice, for refinancing existing debt on commercially reasonable terms given market conditions at the applicable time, to fund the cash component of the
Consideration or in relation to internal transactions solely involving Mitel and its wholly-owned Subsidiaries or solely among such Subsidiaries; 

  

	 	(xvii)	except in the ordinary course of business consistent with past practice, pay, discharge, settle, satisfy, compromise, waive, assign or release any claims, liabilities
or obligations other than: 

  

	 	(A)	the payment, discharge or satisfaction, in the ordinary course of business, of liabilities reflected or reserved against in Mitel’s financial statements (or in
those of any of its Subsidiaries) or incurred in the ordinary course of business; or 

  

	 	(B)	where the relevant claim, liability or obligation is less than $2,000,000, or payment of any fees related to the Arrangement; 

 

	 	(xviii)	other than in the ordinary course of business consistent with past practice (A) enter into any agreement that, if entered into prior to the date hereof, would have
been a Material Contract or that is otherwise material to Mitel and its Subsidiaries, considered as a whole; or (B) modify, amend in any material respect, transfer or terminate any Material Contract or Contract that is otherwise material to
Mitel and its Subsidiaries, considered as a whole, or waive, release, or assign any material rights or claims thereto or thereunder; 

  
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	 	(xix)	enter into or terminate any hedges, derivatives, swaps or other financial instruments or like transactions, other than in the ordinary course of business consistent
with past practice; 

  

	 	(xx)	materially change the business of Mitel or its Subsidiaries; 

  

	 	(xxi)	(A) increase any severance, change of control or termination pay to (or amend any existing arrangement relating to the foregoing with) any director, officer or employee
of Mitel or any of its Subsidiaries; (B) increase benefits payable under any existing severance or termination pay policies or employment agreements; (C) accelerate vesting or amend or waive any performance or vesting criteria under the
Mitel Employee Share Plans or Mitel Benefit Plans or any grants made thereunder; (D) increase the coverage, contributions, funding requirements or benefits available under any Mitel Benefit Plan or create any new plan which would be considered
to be a Mitel Benefit Plan once created or (E) except in the ordinary course of business consistent with past practice, increase compensation, bonus levels or other benefits payable to any employee of Mitel or any of its Subsidiaries, but not
including, for the avoidance of doubt, any director or executive officer of Mitel or any of its Subsidiaries; 

  

	 	(xxii)	adopt or amend or make any contribution (other than contributions consistent with past practice for existing plans) to any bonus, profit sharing, option, pension,
retirement, deferred compensation, insurance, retention, incentive compensation, other compensation or other similar plan, agreement, trust, fund or arrangement for the benefit of employees, except as is necessary to comply with applicable Law or
non-discretionary requirements of pre-existing plans; 

  

	 	(xxiii)	take any action or fail to take any action which action or failure to act would reasonably be expected to cause any Governmental Entities to institute proceedings for
the suspension of, or the revocation or limitation of rights under, any material Authorizations necessary to conduct its businesses as now conducted; or 

  

	 	(xxiv)	take any action or fail to take any action that is intended to, or would reasonably be expected to, individually or in the aggregate, prevent, materially delay or
materially impede the ability of Aastra or Mitel to consummate the Arrangement or the transactions contemplated by this Agreement. 

  

	 	(c)	Mitel shall use all commercially reasonable efforts to cause its current insurance (or re-insurance) policies not to be cancelled or terminated or any of the coverage
thereunder to lapse, unless simultaneously with such termination, cancellation or lapse, replacement policies underwritten by insurance and reinsurance companies of nationally recognized standing providing coverage equal to or greater than the
coverage under the cancelled, terminated or lapsed policies for substantially similar premiums are in full force and effect; 

  
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	 	(d)	Mitel and each of its Subsidiaries shall: 

  

	 	(i)	duly and timely file all Tax Returns required to be filed by it on or after the date hereof and all such Tax Returns will be true, complete and correct in all material
respects; 

  

	 	(ii)	timely withhold, collect, remit and pay all Taxes which are to be withheld, collected, remitted or paid by it to the extent due and payable; 

 

	 	(iii)	not amend any Tax Return or change any of its methods of reporting income, deductions or accounting for income Tax purposes from those employed in the preparation of
its income tax return for the taxation year ended April 30, 2013, except as may be required by applicable Laws; 

  

	 	(iv)	not make or revoke any material election relating to Taxes, other than any election that has yet to be made in respect of any event or circumstance occurring prior to
the date of the Agreement; 

  

	 	(v)	not enter into any Tax sharing, Tax allocation or Tax indemnification agreement; and 

 

	 	(vi)	not make a request for a Tax ruling to any Governmental Entity. 

  

	 	(e)	Mitel shall use commercially reasonable efforts to maintain and preserve all of its rights under each of its and its Subsidiaries Authorizations and shall not solicit
or encourage any Governmental Entity to make additions to the obligations under any existing or future Authorization (except to the extent necessary for Mitel to continue operating its business in accordance with applicable Laws in which case Mitel
shall consult with Aastra prior to soliciting or encouraging such additions and shall, acting reasonably, take into account Aastra’s reasonable comments); 

 

	 	(f)	Mitel shall not authorize, propose, enter into or modify any contract, agreement, commitment or arrangement, to do any of the matters prohibited by the other
subsections of this Section 5.2. 

  

	5.3	Mutual Covenants of the Parties Relating to the Arrangement 

 Each of the Parties covenants and agrees that, subject to the terms and conditions of this Agreement, during that period from the date of this Agreement until the earlier of the Effective Time and the
time that this Agreement is terminated in accordance with its terms: 
  

	 	(a)	 it shall use its reasonable commercial efforts to, and shall cause its Subsidiaries to use all reasonable commercial efforts to, satisfy (or cause the
satisfaction of) the conditions precedent to its obligations hereunder as set forth in Article 6 to the extent the same is within its control and to take, or cause to be taken, all other action and to do, or cause to be done, all other things
necessary, proper or advisable under all applicable Laws to complete the Arrangement, including using its reasonable commercial efforts to promptly (i) obtain all necessary waivers, consents and approvals required to be obtained by it from
parties to material loan 

  
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agreements, leases and other contracts; (ii) obtain all necessary and material exemptions, consents, approvals and authorizations as are required to be obtained by it under all applicable
Laws; (iii) effect all necessary and material registrations and filings and submissions of information requested by Governmental Entities required to be effected by it in connection with the Arrangement; (iv) fulfill all conditions and
satisfy all provisions of this Agreement and the Arrangement, including delivery of the certificates of their respective officers contemplated by Sections 6.2(a), 6.2(b), 6.3(a) and 6.3(b); and (v) co-operate with the other Party in connection
with the performance by it and its Subsidiaries of their obligations hereunder; 

  

	 	(b)	it shall not take any action, refrain from taking any action, or permit any action to be taken or not taken, which is inconsistent with this Agreement or which would
reasonably be expected to significantly impede the consummation of the Arrangement or the transactions contemplated herein; 

  

	 	(c)	except for non-substantive communications with securityholders, and subject to its obligations under Section 2.13, it shall furnish promptly to the other Party or
its counsel, a copy of each notice, report, schedule or other document delivered, filed or received by it in connection with: (i) the Arrangement; (ii) any filings under applicable Laws in connection with the transactions contemplated
herein; and (iii) any dealings with Governmental Entities in connection with the transactions contemplated herein; 

  

	 	(d)	it will conduct itself so as to keep the other Party fully informed as to the material decisions or actions required or required to be made with respect to the
operation of its business; provided that such disclosure is not otherwise prohibited by reason of a confidentiality obligation owed to a third party or otherwise prevented by applicable Law or is competitively sensitive information;

  

	 	(e)	it shall promptly notify the other Party in writing of any material change (actual, anticipated, contemplated or, to the knowledge of such Party, threatened) in its
business, operations, affairs, assets, capitalization, financial condition, prospects, licenses, permits, rights, privileges or liabilities, whether contractual or otherwise, or of any Governmental Entity or third party complaints, investigations or
hearings (or communications indicating that the same may be contemplated), or of any change in any representation or warranty provided by such Party in this Agreement which change is or may be of such a nature to render any representation or
warranty misleading or untrue in any material respect or of the failure to comply with or satisfy any covenant, condition or agreement to be complied with or satisfied by such Party hereunder prior the Effective Time, and it shall in good faith
discuss with the other Party any change in circumstances (actual, anticipated, contemplated, or to the knowledge of such Party, threatened) which is of such a nature that there may be a reasonable question as to whether notice need to be given to
the other Party pursuant to this provision. 

  
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	 	(f)	it shall not settle or compromise any claim brought by any present, former or purported holder of its securities in connection with the transactions contemplated herein
or the Arrangement prior to the Effective Date without the prior written consent of the other Party, which consent shall not be unreasonably withheld, conditioned or delayed; 

 

	 	(g)	it shall use its commercially reasonable efforts to conduct its affairs so that all of its representations and warranties contained herein shall be true and correct on
and as of the Effective Date as if made thereon; 

  

	 	(h)	it shall and shall cause its Subsidiaries to use commercially reasonable efforts to perform all obligations required to be performed by it or any of its Subsidiaries
under this Agreement, co-operate with the other Party in connection therewith, and do all such other acts and things as may be necessary or desirable in order to consummate and make effective as soon as reasonably practicable the transactions
contemplated by this Agreement, including the execution and delivery of such documents as the other Party may reasonably require; and 

  

	 	(i)	use commercially reasonable efforts to (A) defend all lawsuits or other legal, regulatory or other proceedings against itself or any of its Subsidiaries
challenging or affecting this Agreement or the consummation of the transactions contemplated hereby and (B) have lifted or rescinded any injunction or restraining order or other order relating to itself or any of its Subsidiaries which may
materially adversely affect the ability of the Parties to consummate the Arrangement. 

  

	5.4	Supplemental Listing Application 

 As soon
as reasonably practicable, Mitel shall apply to list the Consideration Shares and Option Shares issuable pursuant to the Arrangement on the TSX and NASDAQ and shall use its commercially reasonable efforts to obtain approval, subject to customary
conditions, for the listing of such Consideration Shares and Option Shares on the TSX and NASDAQ. 
  

	5.5	Pre-Arrangement Reorganization 

 Aastra
agrees that, upon request by Mitel, Aastra shall, and shall cause each of its Subsidiaries to (a) effect such reorganizations of Aastra’s or its Subsidiaries’ business, operations and assets or such other transactions as Mitel may
reasonably request, acting reasonably (each a “Pre-Arrangement Reorganization”); and (b) co-operate with Mitel and its advisors in order to determine the nature of the Pre-Arrangement Reorganizations that might be undertaken
and the manner in which they might most effectively be undertaken; provided that (i) such requested cooperation does not unreasonably interfere with the ongoing operations of Aastra and its Subsidiaries; (ii) the Pre-Arrangement
Reorganizations are not, in the opinion of Aastra acting reasonably, prejudicial to the Aastra Shareholders, holders of Aastra Options, Aastra DSUs or Aastra SARs, Aastra or any of its Subsidiaries; (iii) such Pre-Arrangement Reorganizations
will not impede, unduly delay or prevent the receipt of any governmental and third party approvals and consents or the satisfaction of any other conditions set forth in Article 6; (iv) such Pre-Arrangement Reorganizations will not impede, delay
or prevent the consummation of the Arrangement; (v) such Pre-Arrangement Reorganization will not require Aastra to obtain the approval of Aastra Shareholders; (vi) such Pre-Arrangement Reorganizations will not be

  
 - 66 -

 
considered in determining whether a representation, warranty or covenant of Aastra (or its Subsidiaries) under this Agreement has been breached; and (vii) Mitel will pay all of the
cooperation and implementation costs and all direct or indirect costs and liabilities, fees, damages, penalties and Taxes that may be incurred as a consequence of the implementation of any Pre-Arrangement Reorganization or to unwind any such
reorganization if the Arrangement is not completed. Mitel shall provide written notice to Aastra of any proposed Pre-Arrangement Reorganization at least 20 days prior to the Effective Date (or such longer period as may be necessary to take account
of any regulatory approvals required in connection with such Pre-Arrangement Reorganization). Upon receipt of such notice, Mitel and Aastra shall work co-operatively and use commercially reasonable efforts to prepare prior to the Effective Time all
documentation necessary and do all such other acts and things as are necessary to give effect to such Pre-Arrangement Reorganization, and any such Pre-Arrangement Reorganization shall occur as close to the Effective Time as is practical and after
Mitel shall have waived, or have confirmed, that all conditions in Sections 6.1 and 6.2 have been satisfied (excluding conditions that are to be and can be satisfied by actions taken at the Effective Time and the condition in Section 6.2(e)).
If the Arrangement is not completed for any reason, Mitel shall indemnify Aastra for all losses and reasonable costs and expenses, including reasonable legal fees and disbursements, incurred directly or indirectly (including by any of its
Subsidiaries) by it in connection with or resulting from any proposed Pre-Arrangement Reorganization and in connection with or resulting from reversing or unwinding any Pre-Arrangement Reorganizations. The obligation of Mitel to reimburse, pay and
indemnify Aastra for fees and expenses and be responsible for costs and other amounts as set out in this Section 5.5 will be in addition to any other payment Mitel may be obliged to make hereunder and will survive termination of this Agreement.

  

	5.6	Board of Directors of Mitel 

 Mitel shall
take all necessary actions to ensure that upon the completion of the Arrangement, the board of directors of Mitel immediately after the Effective Time shall consist of nine directors including three directors of Aastra to be nominated and identified
by Aastra and agreed upon by the Parties, acting reasonably. 
  

	5.7	Financing 

 Mitel shall, and shall cause
its Subsidiaries to, use reasonable best efforts to take all actions, and do, or cause to be done, all things necessary to arrange the Mitel Financing on the terms and conditions described in the Mitel Commitment Letter, including using reasonable
best efforts to (i) maintain in effect the Mitel Commitment Letter or equivalent financing arrangements; (ii) satisfy on a timely basis all conditions applicable to Mitel obtaining the Mitel Financing set forth in the Mitel Commitment
Letter that are within its control; (iii) entering into definitive agreements with respect thereto on the terms and conditions contemplated by the Mitel Commitment Letter or on other terms acceptable to Mitel, in its sole discretion, that would
not adversely impact the ability or likelihood of Mitel to consummate the transactions contemplated hereby; (iv) enforce the obligations of any of the other parties under such Mitel Commitment Letter; (v) advise Aastra of any cancellation
of any portion of the commitments under the Mitel Commitment Letter and its plan for replacing the financing under such cancelled portion; and (vi) subject to the satisfaction or waiver of the conditions set forth herein, consummate the Mitel
Financing prior to the filing by Aastra of the Articles of Arrangement with the Director. 

  
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	5.8	Financing Assistance 

  

	 	(a)	Aastra shall, and shall cause its Subsidiaries to, provide such co-operation (including with respect to timeliness) to Mitel as Mitel may reasonably request, in
connection with the arrangements by Mitel to obtain new or amend any existing credit facilities, subject to the terms hereof (provided that: (A) such request is made on reasonable notice; (B) such cooperation does not unreasonably
interfere with the ongoing operations of Aastra and its Subsidiaries or unreasonably interfere with or hinder or delay the performance by Aastra or its Subsidiaries of their obligations hereunder; (C) Aastra shall not be required to provide, or
cause any of its Subsidiaries to provide, cooperation that involves any binding commitment by Aastra or its Subsidiaries, which commitment is not conditional on the completion of the Arrangement and does not terminate without liability to Aastra or
its Subsidiaries upon the termination of this Agreement; and (D) any actions taken hereunder are in compliance with Section 5.1, including, but not limited to: 

 

	 	(i)	participating in meetings, presentations, drafting sessions, due diligence sessions and sessions with prospective lenders, investors and ratings agencies;

  

	 	(ii)	furnishing Mitel and its proposed lenders with such financial and other pertinent information regarding itself as may be reasonably requested by Mitel, including,
reconciliation of financial information from IFRS to U.S. GAAP and including, without limitation, customary “know your customer” and Patriot Act information; 

 

	 	(iii)	assisting Mitel and any lenders in the preparation of any lender and investor presentations, rating agency presentations, bank information memoranda (for both public
and private investors, and including the delivery of customary representation letters) as contemplated by the Mitel Commitment Letter and similar documents for the financing; 

 

	 	(iv)	cooperating with the marketing efforts of Mitel and any lenders for any of the Mitel Financing (including making its senior management available to participate in bank
meetings, assisting Mitel and the Lenders in the preparation of materials and financial and other information for rating agency presentations); 

  

	 	(v)	assisting in the preparation of definitive financing documents as may be reasonably requested by Mitel; 

 

	 	(vi)	facilitating the pledging of collateral and removal of liens; provided that no obligation of Aastra or its Subsidiaries under any agreement, document or pledge shall be
operative until the Effective Date; 

  
 - 68 -

	 	(vii)	obtaining assistance of its accountants to provide consents for the use of their reports in materials related to the financing under the Mitel Commitment Letter;

  

	 	(viii)	using commercially reasonable efforts to obtain surveys, consents, approvals, authorizations, customary payoff letters, instruments of termination or discharge,
environmental assessments and title insurance (including by providing such affidavits and non-imputation endorsements in connection therewith) as reasonably requested by Mitel; 

 

	 	(ix)	executing and delivering, to be effective as of the Effective Time, any certificates, legal opinions or documents, as may be reasonably requested by Mitel (including an
officer’s certificate of Mitel or any of its Subsidiaries with respect to solvency matters and consents of accountants for use of their reports in any materials relating to such debt financing or securities issue); 

 

	 	(x)	taking all corporate action necessary to permit the consummation of the Mitel Financing, including entering into one or more credit agreements, security agreements or
other instruments or agreements on terms reasonably satisfactory to Mitel in connection with such financing, to be effective no earlier than the Effective Date, to the extent direct borrowings or debt incurrence by Mitel or its Subsidiaries is
contemplated for such Mitel Financing, and reasonably assisting in the negotiation thereof; 

  

	 	(xi)	permitting the use, without compensation, of Aastra’s trademarks and/or logos in materials relating to the Mitel Financing; and 

 

	 	(xii)	otherwise using commercially reasonable efforts in connection with the arrangements by Mitel to obtain the Mitel Financing. 

 

	 	(b)	Notwithstanding Section 5.8(a), neither Aastra nor any of its Subsidiaries shall be required by Mitel to: (i) pay any commitment, consent or other similar fee or
incur any other liability in connection with any such financing prior to the Effective Time; or (ii) take any action or do anything that would: (A) contravene any applicable Law; or (B) contravene any of Aastra or any of its
Subsidiaries’ agreements that relates to borrowed money; or (C) be capable of impairing or preventing the satisfaction of any condition set forth in 6.3; or (iii) commit to take any action that is not contingent on the consummation of
the transactions contemplated herein at the Effective Time; or (iv) except as required to comply with applicable Laws, disclose any information that in the reasonable judgment of Aastra would result in the disclosure of any trade secrets or
similar information or violate any obligations of Aastra or any other Person with respect to confidentiality. 

  
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	 	(c)	Mitel shall promptly upon request by Aastra and from time to time reimburse Aastra and its Subsidiaries for all reasonable out-of-pocket costs (including legal fees)
incurred by Aastra or its Subsidiaries in connection with any of the actions contemplated by this Section 5.8 including, if this Agreement is terminated by Aastra in accordance with its terms other than due to a termination described in Section
7.2(a)(iii), in connection with any unwinding or similar transactions by Aastra or its Subsidiaries required as a result of actions taken pursuant to this Section 5.8. 

 

	5.9	Regulatory Approvals 

  

	 	(a)	Subject to the terms and conditions of this Agreement, each of Mitel and Aastra shall use its commercially reasonable efforts to take, or cause to be taken, all actions
and to do, or cause to be done, all things necessary, proper or advisable under applicable Law to consummate the transactions contemplated by this Agreement as soon as practicable; 

 

	 	(b)	Mitel shall agree to undertakings, commitments and conditions if requested by the French Ministry of Economy in connection with and to obtain the French Determination;

  

	 	(c)	Mitel shall agree to undertakings requested of Mitel by the Investment Review Division of Industry Canada in connection with and to obtain the Investment Canada
Approval, which for the avoidance of doubt may include undertakings that could have a duration of three to five years to maintain a head office in Canada and to ensure that a majority of the management of the business located in Canada are Canadians
and undertakings relating to employment levels and capital and research & development expenditure levels; 

  

	 	(d)	Each of the parties shall and shall cause its affiliates to prepare and submit and shall cooperate and consult with each other in connection with the preparation and
submission of all applications and filings (including undertakings requested of the Purchaser by the Investment Review Division of Industry Canada in connection with the Investment Canada Approval) as may be or become necessary or desirable to
obtain any Regulatory Approvals as soon as practicable. 

  

	 	(e)	Aastra shall provide Mitel with such information and reasonable assistance as Mitel may reasonably request in order to prepare all such applications and filings. Each
of Mitel and Aastra shall provide each other a an opportunity to review and provide input into drafts of such applications, filings and other written communications with the relevant Governmental Authorities prior to their finalization and shall
provide copies of all correspondence and information provided to and received from such Governmental Authorities except that confidential competitively-sensitive information shall be exchanged only between external legal counsel to the parties and
shall be redacted from any copies of filings or other materials that may be provided to other representatives of the recipient party; 

  

	 	(f)	Each of the parties shall cooperate with respect to, and provide counsel to the other with an opportunity to attend and/or participate in, any meetings, conference
calls or other communications with the Governmental Authorities. 

  
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	 	(g)	Notwithstanding anything to the contrary in this Section 5.9, Mitel shall be entitled to direct the process for obtaining Investment Canada Approval.

  

	 	(h)	Notwithstanding the foregoing and anything else in this Agreement, nothing contained herein shall be construed in such a manner to require Mitel to take any action, or
commit to take any action, in connection with obtaining Regulatory Approvals that would adversely impact in any material respect the post-closing operations, results of operations or the financial condition of the business of Mitel (any of the
foregoing actions an “Unreasonable Condition”). 

  

	5.10	Non-Solicitation 

  

	 	(a)	Except as otherwise expressly provided in this Section 5.10, each Party shall not, directly or indirectly, through any officer, director, employee, representative
(including any financial or other advisor) or agent of such Party or any of its Subsidiaries (collectively, the “Representatives”): 

  

	 	(i)	solicit, assist, initiate, encourage or otherwise facilitate (including by way of furnishing information or entering into any form of agreement, arrangement or
understanding) any inquiry, proposal or offer that constitutes or may reasonably be expected to constitute or lead to an Acquisition Proposal; 

  

	 	(ii)	enter into, engage in, continue or otherwise participate in any discussions or negotiations with any Person (other than the other Party) regarding any inquiry, proposal
or offer that constitutes or may reasonably be expected to constitute or lead to an Acquisition Proposal; 

  

	 	(iii)	approve or recommend, or propose publicly to approve or recommend, any Acquisition Proposal; 

 

	 	(iv)	accept or enter into, or publicly propose to accept or enter into, any letter of intent, agreement in principle, agreement, arrangement or undertaking related to any
Acquisition Proposal; or 

  

	 	(v)	in the case of Aastra, make an Aastra Change in Recommendation. 

  

	 	(b)	 Each Party shall, and shall cause its Subsidiaries and Representatives to, immediately cease and cause to be terminated any existing solicitation,
encouragement, discussion or negotiation with any Person (other than the other Party) conducted by such Party or any of its Subsidiaries or Representatives with respect to any Acquisition Proposal, and, in connection therewith, such Party will
discontinue access to any of its confidential information (and not establish or allow access to any of its confidential information, or any data room, virtual or otherwise) and shall as soon as possible request, and exercise all rights it has to
require, the return or destruction of all confidential information regarding such Party and its Subsidiaries previously provided to any such Person or any other Person to the extent such information has not already been returned or destroyed.

  
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Each Party shall not release any third party from any confidentiality, non-solicitation or standstill agreement, or terminate, modify, amend or waive the terms thereof, and each Party undertakes
to enforce, and cause its Subsidiaries to enforce, all standstill, non-disclosure, non-disturbance, non-solicitation and similar covenants that such Party or any of its Subsidiaries has entered into prior to the date hereof. Each Party represents
and warrants that it has not waived any standstill or similar agreement or restriction to which the Party or any Subsidiary is a party, except to permit and facilitate the entering into of this Agreement and the consummation of the Arrangement, and
further covenants and agrees (i) that the Party shall take all necessary action to enforce each confidentiality, standstill or similar agreement or restriction to which the Party or any Subsidiary is a party, and (ii) that neither the
Party, nor any Subsidiary or any of their respective representatives have or will, without the prior written consent of the other Party, release any Person from, or waive, amend, suspend or otherwise modify such Person’s obligations respecting
the Party, or any of its Subsidiaries, under any confidentiality, standstill or similar agreement or restriction to which the Party or any Subsidiary is a party. 

 

	 	(c)	Each Party shall immediately provide notice to the other Party of any Acquisition Proposal or any proposal, inquiry or offer that could lead to an Acquisition Proposal
or any amendments to the foregoing or any request for non-public information relating to it or any of its Subsidiaries in connection with such an Acquisition Proposal or for access to the properties, books or records of such Party or any of its
Subsidiaries by any Person that informs such Party, any member of the Mitel Board or the Aastra Board, as applicable, or any of such Party’s Subsidiaries that it is considering making, or has made, an Acquisition Proposal. Such notice to the
other Party shall be made, from time to time, at first immediately orally and then promptly (and in any event within 24 hours) in writing and shall indicate the identity of the Person or Persons making such proposal, inquiry, offer or request, all
material terms thereof and such other details of the proposal, inquiry, offer or request known to such Party, and shall include copies of any such proposal, inquiry, offer or request or any amendment to any of the foregoing. The Parties shall keep
one another promptly and fully informed of the status, including any change to the material terms, of any such proposal, inquiry, offer or request and will respond promptly to all inquiries by the other Party with respect thereto.

  

	 	(d)	Notwithstanding Section 5.10(a), if at any time following the date of this Agreement and prior to obtaining the Aastra Shareholder Approval or Mitel Shareholder
Approval, as applicable, a Party receives a request for material non-public information, or to enter into discussions, from a Person that proposes to such Party an unsolicited bona fide written Acquisition Proposal that did not result from a
breach of Section 5.10 and such Person was not restricted from making such Acquisition Proposal pursuant to any existing confidentiality, standstill, non-disclosure, use, business purpose or similar restriction with such Party or any of its
Subsidiaries, and the Aastra Board or the Mitel Board, as applicable, determines, in good faith after consultation with its financial advisors and outside legal counsel, that such Acquisition Proposal constitutes or would reasonably be expected to
result in a Superior Proposal, then, and only in such case, such Party may: 

  

	 	(i)	provide the Person making such Acquisition Proposal with access to information regarding such Party and its Subsidiaries; and/or 

  
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	 	(ii)	enter into, participate, facilitate and maintain discussions or negotiations with, and otherwise cooperate with or assist, the Person making such Acquisition Proposal,

 provided that such Party shall not, and shall not allow any of its Subsidiaries or Representatives to, disclose
any non-public information with respect to such Party or any of its Subsidiaries to such Person without having (i) entered into a confidentiality and standstill agreement on terms no less favourable to such Party than the Confidentiality
Agreement, provided that such agreement does not prevent such Person from making an Acquisition Proposal to the Aastra Board or Mitel Board, as applicable, and provided a copy of such confidentiality and standstill agreement to the other Party and
(ii) provided further that the other Party is provided with a list of the information provided to such Person and the other Party is immediately provided with access to the same information to which such Person was provided. Any such
confidentiality and standstill agreement may not include any provision calling for an exclusive right to negotiate with such Person and may not restrict such Party or any of its Subsidiaries from complying with Section 5.10. 

 

	 	(e)	Neither Party shall accept, approve or enter into any agreement, understanding or arrangement (a “Proposed Agreement”), other than a confidentiality
and standstill agreement as contemplated by Subsection 5.10(d), unless: 

  

	 	(i)	the board of the Party in receipt of the Acquisition Proposal determines that the Acquisition Proposal constitutes a Superior Proposal; 

 

	 	(ii)	the Aastra Shareholder Approval has not been obtained; 

  

	 	(iii)	such Party has complied in all material respects with Subsections 5.10(a) through 5.10(d) inclusive; 

 

	 	(iv)	the Person making the Acquisition Proposal was not restricted from doing so pursuant to any existing confidentiality, standstill, non-disclosure, use, business purpose
or similar restriction with such Party or any of its Subsidiaries; 

  

	 	(v)	such Party has provided the other Party with a notice in writing that there is a Superior Proposal together with all documentation related to and detailing the Superior
Proposal, including a copy of any Proposed Agreement relating to such Superior Proposal, such documents to be so provided to the other Party not less than five Business Days prior to the proposed acceptance, approval or execution of the Proposed
Agreement by such Party; 

  
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	 	(vi)	five Business Days (the “Response Period”) shall have elapsed from the date the other Party received the notice and documentation referred to in
Subsection 5.10(e)(v) from such Party and, if the other Party has proposed to amend the terms of the Arrangement in accordance with Subsection 5.10(f), the Aastra Board or the Mitel Board, as applicable, shall have determined, in good faith, after
consultation with its financial advisors and outside legal counsel, that the Acquisition Proposal is a Superior Proposal compared to the proposed amendment to the terms of the Arrangement by the other Party; 

 

	 	(vii)	Mitel terminates this Agreement pursuant to Section 7.2(a)(iii)(C) or Aastra terminates this Agreement pursuant to Section 7.2(a)(iv)(C) and, in either case,
such Party has previously paid, or concurrently pays, to the other Party the Aastra Termination Fee or the Mitel Termination Fee, as applicable. 

  

	 	(f)	Each Party acknowledges and agrees that, during the Response Period or such longer period as such Party may approve for such purpose, the other Party shall have the
opportunity, but not the obligation, to propose to amend the terms of this Agreement, including an increase in, or modification of, the Consideration. The Aastra Board or the Mitel Board, as applicable, will review any proposal by the other Party to
amend the terms of the Agreement in order to determine in good faith in the exercise of its fiduciary duties whether the other Party’s proposal to amend the Agreement would result in the Acquisition Proposal ceasing to be a Superior Proposal.
If the Aastra Board or the Mitel Board, as applicable, determines that the Acquisition Proposal is not a Superior Proposal as compared to the proposed amendments to the terms of the Agreement, it will promptly enter into an amended agreement with
the other Party reflecting such proposed amendments. Each successive modification of any Acquisition Proposal shall constitute a new Acquisition Proposal for the purposes of this Section 5.10 and the other Party shall be afforded a new Response
Period in respect of each such Acquisition Proposal. 

  

	 	(g)	Each Party shall ensure that its Representatives are aware of the provisions of this Section 5.10, and each Party shall be responsible for any breach of this
Section 5.10 by its Representatives. 

  

	 	(h)	In circumstances where: 

  

	 	(i)	Aastra has notified Mitel that it intends to make an Aastra Change in Recommendation under Section 5.10(i); or 

 

	 	(ii)	a Party provides the other Party with notice of a Superior Proposal contemplated by Section 5.10(e), 

  
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 on a date that is less than seven Business Days prior to the Aastra Meeting, either Party
may, or if requested by the other Party, shall adjourn the Aastra Meeting to a date that is seven Business Days after the date of such notice, provided, however, that the Aastra Meeting shall not be adjourned or postponed to a date later than the
seventh Business Day prior to the Outside Date. 
  

	 	(i)	Nothing in this Agreement shall prohibit the Aastra Board making an Aastra Change in Recommendation or from making any disclosure to any Aastra securityholders prior to
the Effective Time, if, in the good faith judgment of the Aastra Board, after consultation with outside legal counsel, failure to take such action or make such disclosure would be inconsistent with the Aastra Board’s exercise of its fiduciary
duties or such action or disclosure is otherwise required under applicable Law (including by responding to an Acquisition Proposal under a directors’ circular or otherwise as required under applicable Securities Laws); provided that:

  

	 	(i)	no Aastra Change of Recommendation may be made in relation to an Acquisition Proposal unless Aastra complies with Section 5.10(e) (other than
Section 5.10(e)(vii); 

  

	 	(ii)	subject to paragraph (i) above, prior to making an Aastra Change in Recommendation, Aastra shall give to Mitel not less than 48 hours’ notice of its intention
to make such a Change in Recommendation; 

  

	 	(iii)	where, having first given notice of its intention to do so pursuant to paragraphs (i) or (ii) above the Aastra Board makes an Aastra Change in Recommendation
and Mitel does not exercise its right of termination pursuant to Section 7.2(a)(iii)(A) prior to the Aastra Meeting, Aastra shall hold the Aastra Meeting on the date for which such meeting is scheduled (subject to adjournment in accordance with
Section 5.10(h) above). 

  

	5.11	Access to Information; Confidentiality 

From the date hereof until the earlier of the Effective Time and the termination of this Agreement pursuant to its terms, subject to compliance with
applicable Laws and the terms of any existing Contracts, each of Mitel and Aastra shall, and shall cause their respective representatives to, afford to the other Party and to representatives of the other Party such access as the other Party may
reasonably require at all reasonable times, including, for the purpose of facilitating integration business planning, to their officers, employees, agents, properties, books, records and contracts, and shall furnish the other Party with all data and
information as the other Party may reasonably request. Mitel and Aastra acknowledge and agree that information furnished pursuant to this Section 5.11 shall be subject to the terms and conditions of the Confidentiality Agreement. 

  
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	5.12	Insurance and Indemnification 

  

	 	(a)	Prior to the Effective Date, Aastra shall purchase customary “tail” policies of directors’ and officers’ liability insurance providing protection no
less favourable in the aggregate to the protection provided by the policies maintained by Aastra and its Subsidiaries which are in effect immediately prior to the Effective Date and providing protection in respect of claims arising from facts or
events which occurred on or prior to the Effective Date and Mitel will, or will cause Aastra and its Subsidiaries to, maintain such tail policies in effect without any reduction in scope or coverage for six years from the Effective Date; provided,
that Mitel shall not be required to pay any amounts in respect of such coverage prior to the Effective Time and provided further that the cost of such policies shall not exceed 200% of Aastra’s current annual aggregate premium for policies
currently maintained by Aastra or its Subsidiaries. 

  

	 	(b)	Mitel agrees that it shall honour all rights to indemnification or exculpation now existing in favour of present and former employees, officers and directors of Aastra
and its Subsidiaries to the extent that they are disclosed in the Aastra Data Room or are otherwise on usual terms for indemnity arrangements, and acknowledges that such rights, to the extent that they are disclosed in the Aastra Data Room or are
otherwise on usual terms for indemnity arrangements, shall survive the completion of the Plan of Arrangement and shall continue in full force and effect in accordance with their terms for a period of not less than six years from the Effective Date.

  

	 	(c)	The provisions of this Section 5.12 are intended for the benefit of, and shall be enforceable by, each insured or indemnified Person, his or her heirs and his or
her legal representatives and, for such purpose, Aastra hereby confirms that it is acting as trustee on their behalf, and agrees to enforce the provisions of this Section on their behalf. Furthermore, this Section 5.12 shall survive the
termination of this Agreement as a result of the occurrence of the Effective Date for a period of six years. 

  

	5.13	Equity-Based Compensation Plans 

  

	 	(a)	Aastra agrees that it will encourage all Aastra Optionholders to exercise their Aastra Options in accordance with their terms prior to the Effective Time and, subject
to the terms of the Aastra 2006 Option Plan, will accelerate vesting for all Aastra Optionholders who exercise their Aastra Options immediately prior to the Effective Time. 

 

	 	(b)	Any Aastra Options that are not exercised in accordance with (a) above prior to the Effective Time will not be subject to accelerated vesting and each such Aastra
Option shall be exchanged for a Replacement Option in accordance with the Plan of Arrangement. 

  

	 	(c)	 Notwithstanding anything in this Agreement or the Arrangement, Aastra or Mitel will be entitled to deduct and withhold from the cash component of the
Consideration (or any amount otherwise payable pursuant to the terms of this Agreement and the Arrangement) to any Aastra Optionholder such amount as is required to be deducted or withheld with respect to the exercise of their Aastra Options under
the Tax Act or other applicable Law and will timely remit all 

  
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amounts so deducted or withheld to the appropriate Governmental Entity. To the extent that amounts are so deducted or withheld and remitted, such amounts will be treated for all purposes of this
Agreement and the Arrangement as having been paid to the relevant Aastra Optionholder in respect of which such deduction or withholding was made. 

  

	5.14	Section 85 Elections 

 Mitel shall
make joint elections with Eligible Holders in respect of the disposition of their Aastra Shares pursuant to Section 85 of the Tax Act (and any similar provision of any applicable provincial Tax legislation) in accordance with the procedures and
within the time limits set out in the Plan of Arrangement. The agreed amount under such joint elections shall be determined by each Eligible Holder in his or her sole discretion within the limits set out in the Tax Act. 

 

	5.15	Fees and Expenses 

 Except as otherwise
expressly provided in this Agreement, each Party shall pay all fees, costs and expenses incurred by such Party in connection with this Agreement and the Arrangement; and (ii) Mitel shall be responsible for any filing fees and applicable Taxes
payable for or in respect of any application, notification or other filing made in respect of any regulatory process in respect of the transactions contemplated by the Arrangement. 

ARTICLE 6 

CONDITIONS 
  

	6.1	Mutual Conditions Precedent 

 The
respective obligations of the Parties to complete the Arrangement are subject to the fulfillment of each of the following conditions precedent on or before the Effective Time, each of which may only be waived with the mutual consent of the Parties:

  

	 	(a)	the Arrangement Resolution shall have been approved and adopted by the Aastra Shareholders at the Aastra Meeting in accordance with the Interim Order;

  

	 	(b)	the Mitel Shareholder Approval shall have been obtained; 

  

	 	(c)	the Interim Order and the Final Order shall each have been obtained on terms consistent with this Agreement, and shall not have been set aside or modified in a manner
unacceptable to Aastra and Mitel, acting reasonably, on appeal or otherwise; 

  

	 	(d)	no Governmental Entity shall have enacted, issued, promulgated, enforced or entered any Law which is then in effect and has the effect of making the Arrangement illegal
or otherwise preventing or prohibiting consummation of the Arrangement; 

  

	 	(e)	the Articles of Arrangement to be filed with the Director in accordance with this Agreement shall be in form and substance acceptable to each of the Parties, acting
reasonably; 

  
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	 	(f)	the receipt of Investment Canada Approval and the French Determination, in each case without an Unreasonable Condition; 

 

	 	(g)	the Consideration Shares and the Option Shares shall, subject to customary conditions, have been approved for listing on the TSX and the NASDAQ; and

  

	 	(h)	the Consideration Shares to be issued pursuant to the Arrangement shall be exempt from the registration requirements of the U.S. Securities Act pursuant to
Section 3(a)(10) thereof. 

  

	6.2	Additional Conditions Precedent to the Obligations of Mitel 

 The obligation of Mitel to complete the Arrangement is subject to the fulfillment of each of the following conditions precedent on or before the Effective Time (each of which is for the exclusive benefit
of Mitel and may be waived by Mitel in whole or in part at any time, without prejudice to any other rights which Mitel may have): 
  

	 	(a)	the representations and warranties of Aastra set forth in (i) Sections 3.1(a) [Organization and Qualification], 3.1(b) [Authority Relative to this Agreement],
3.1(g) [Capitalization and Listing], 3.1(p)(x) [Maximum Severance Entitlements of Aastra Directors and Officers] and 3.1(bb) [Brokers; Expenses] shall be true and correct in all respects (other than, in each case, de minimis inaccuracies) as of the
date of this Agreement and (ii) Article 3, other than those to which clause (i) above applies, shall be true and correct in all respects (disregarding for purposes of this Section 6.2(a) any materiality or Aastra Material Adverse
Effect qualification contained in any such representation or warranty) as of the Effective Time as if made at and as of such time (except that any such representation and warranty that by its terms speaks specifically as of the date of this
Agreement or another date shall be true and correct in all respects as of such date), except in the case of this clause (ii) where the failure to be so true and correct in all respects, individually and in the aggregate, has not had an Aastra
Material Adverse Effect, and Aastra shall have provided to Mitel a certificate of two senior officers of Aastra certifying the foregoing on the Effective Date; 

 

	 	(b)	Aastra shall have complied in all material respects with its covenants herein and Aastra shall have provided to Mitel a certificate of two senior officers of Aastra
certifying compliance with such covenants on the Effective Date; 

  

	 	(c)	holders of no more than 5% of all of the issued and outstanding Aastra Shares shall have validly exercised Dissent Rights (and shall not have withdrawn such rights) in
respect of the Arrangement; 

  

	 	(d)	since the date of this Agreement, there shall not have occurred an Aastra Material Adverse Effect; and 

 

	 	(e)	Mitel shall have received the funds contemplated by the Commitment Letter. 

  
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	6.3	Conditions Precedent to the Obligations of Aastra 

 The obligation of Aastra to complete the Arrangement is subject to the fulfillment of each of the following conditions precedent on or before the Effective Time (each of which is for the exclusive benefit
of Aastra and may be waived by Aastra in whole or in part at any time, without prejudice to any other rights which Aastra may have): 
  

	 	(a)	the representations and warranties of Mitel set forth in (i) Sections 4.1(a) [Organization and Qualification], 4.1(b) [Authority Relative to this Agreement],
4.1(g) [Capitalization and Listing], and 4.1(bb) [Brokers; Expenses] shall be true and correct in all respects (other than, in each case, de minimis inaccuracies) as of the date of this Agreement and (ii) Article 4, other than those to which
clause (i) above applies, shall be true and correct in all respects (disregarding for purposes of this Section 6.3(a) any materiality or Mitel Material Adverse Effect qualification contained in any such representation or warranty) as of
the Effective Time as if made at and as of such time (except that any such representation and warranty that by its terms speaks specifically as of the date of this Agreement or another date shall be true and correct in all respects as of such date),
except in the case of this clause (ii) where the failure to be so true and correct in all respects, individually and in the aggregate, has not had a Mitel Material Adverse Effect, and Mitel shall have provided to Aastra a certificate of two
senior officers of Mitel certifying the foregoing on the Effective Date; 

  

	 	(b)	Mitel shall have complied in all material respects with its covenants herein and Mitel shall have provided to Aastra a certificate of two senior officers of Mitel
certifying compliance with such covenants on the Effective Date; and 

  

	 	(c)	since the date of this Agreement, there shall not have occurred a Mitel Material Adverse Effect. 

 

	6.4	Satisfaction of Conditions 

 The
conditions precedent set out in Section 6.1, Section 6.2 and Section 6.3 shall be conclusively deemed to have been satisfied, waived or released when the Certificate of Arrangement is issued by the Director following filing of the
Articles of Arrangement with the consent of the Parties in accordance with the terms of this Agreement. 
 ARTICLE 7

 TERM, TERMINATION, AMENDMENT AND WAIVER 

 

	7.1	Term 

 This Agreement shall be effective
from the date hereof until the earlier of the Effective Time and the termination of this Agreement in accordance with its terms. 

  
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	7.2	Termination 

  

	 	(a)	This Agreement may be terminated at any time prior to the Effective Time: 

  

	 	(i)	by mutual written agreement of Aastra and Mitel; 

  

	 	(ii)	by either Aastra or Mitel, if 

  

	 	(A)	the Effective Time shall not have occurred on or before the Outside Date, except that the right to terminate this Agreement under this Section 7.2(a)(ii) shall not
be available to any Party whose failure to fulfill any of its obligations or breach of any of its representations and warranties under this Agreement has been the cause of, or resulted in, the failure of the Effective Time to occur by such Outside
Date; 

  

	 	(B)	after the date hereof, there shall be enacted or made any applicable Law that makes consummation of the Arrangement illegal or otherwise prohibited or enjoins Aastra or
Mitel from consummating the Arrangement and such applicable Law or enjoinment shall have become final and non-appealable; 

  

	 	(C)	Aastra Shareholder Approval shall not have been obtained at the Aastra Meeting; or 

 

	 	(D)	Mitel Shareholder Approval shall not have been obtained by the time that Aastra Shareholder Approval has been obtained. 

 

	 	(iii)	by Mitel, if: 

  

	 	(A)	prior to the Effective Time: (1) the Aastra Board fails to recommend or withdraws, amends, modifies or qualifies, in a manner adverse to Mitel or fails to publicly
reaffirm its recommendation of the Arrangement within five Business Days (and in any case prior to the Aastra Meeting) after having been requested in writing by Mitel to do so; (2) the Aastra Board or a committee thereof shall have approved or
recommended any Acquisition Proposal ((1) or (2) each an “Aastra Change in Recommendation”); or (3) Aastra shall have breached Section 5.10 in any material respect; 

 

	 	(B)	a breach of any representation or warranty or failure to perform any covenant or agreement on the part of Aastra set forth in this Agreement shall have occurred that
would cause the conditions set forth in Section 6.2(a) or Section 6.2(b) not to be satisfied, and such conditions are incapable of being satisfied by the Outside Date, as reasonably determined by Mitel and provided that Mitel is not then
in breach of this Agreement so as to cause any condition in Section 6.3(a) or Section 6.3(b) not to be satisfied; or 

  
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	 	(C)	it wishes to enter into a binding written agreement with respect to a Superior Proposal (other than a confidentiality and standstill agreement permitted by
Section 5.10(d)), subject to compliance with Section 5.10 in all material respects and provided that no termination under this Section 7.2(a)(iii)(C) shall be effective unless and until Mitel shall have paid to Aastra the amount
required to be paid pursuant to Section 7.3. 

  

	 	(iv)	by Aastra, if 

  

	 	(A)	prior to the Effective Time: (1) the Mitel Board or a committee thereof shall have approved or recommended any Acquisition Proposal; or (2) Mitel shall have
breached Section 5.10 in any material respect; 

  

	 	(B)	a breach of any representation or warranty or failure to perform any covenant or agreement on the part of Mitel set forth in this Agreement shall have occurred that
would cause the conditions set forth in Section 6.3(a) or Section 6.3(b) not to be satisfied, and such conditions are incapable of being satisfied by the Outside Date as reasonably determined by Aastra and provided that Aastra is not then
in breach of this Agreement so as to cause any condition in Section 6.2(a) or Section 6.2(b) not to be satisfied; or 

  

	 	(C)	it wishes to enter into a binding written agreement with respect to a Superior Proposal (other than a confidentiality and standstill agreement permitted by
Section 5.10(d)), subject to compliance with Section 5.10 in all material respects and provided that no termination under this Section 7.2(a)(iv)(C) shall be effective unless and until Aastra shall have paid to Mitel the amount
required to be paid pursuant to Section 7.3. 

  

	 	(b)	The Party desiring to terminate this Agreement pursuant to this Section 7.2 (other than pursuant to Section 7.2(a)(i)) shall give notice of such termination
to the other Party, specifying in reasonable detail the basis for such Party’s exercise of its termination right. 

  

	 	(c)	If this Agreement is terminated pursuant to this Section 7.2, this Agreement shall become void and be of no further force or effect without liability of any Party
(or any shareholder, director, officer, employee, agent, consultant or representative of such Party) to any other Party hereto, except that the provisions of this Section 7.2(c) and Sections 7.3, 8.2, 8.5, 8.6 and 8.7 and all related
definitions set forth in Section 1.1 and the provisions of the Confidentiality Agreement shall survive any termination hereof pursuant to Section 7.2(a). 

 

	7.3	Expenses and Termination Fees 

  

	 	(a)	Except as otherwise provided herein, all fees, costs and expenses incurred in connection with this Agreement and the Plan of Arrangement shall be paid by the Party
incurring such fees, costs or expenses. 

  
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	 	(b)	For the purposes of this Agreement: 

  

	 	(i)	“Fee” means a (A) Mitel Expense Fee, (B) Mitel Termination Fee, (C) Aastra Expense Fee, or (D) Aastra Termination Fee;

  

	 	(ii)	“Mitel Expense Fee” means CDN$2,500,000; 

  

	 	(iii)	“Mitel Termination Fee” means CDN$11,000,000; 

  

	 	(iv)	“Aastra Expense Fee” means CDN$2,500,000; and 

  

	 	(v)	“Aastra Termination Fee” means an amount equal to CDN$11,000,000. 

 

	 	(c)	For the purposes of this Agreement, “Aastra Termination Fee Event” means the termination of this Agreement: 

 

	 	(i)	by Mitel pursuant to Section 7.2(a)(iii)(A) [Aastra Change in Recommendation or Breach of Non-Solicit] (but not including a termination by Mitel pursuant to
Section 7.2(a)(iii)(A) in circumstances where the Aastra Change in Recommendation resulted from the occurrence of a Mitel Material Adverse Effect); 

  

	 	(ii)	by Aastra pursuant to Section 7.2(a)(iv)(C) [Superior Proposal]; or 

  

	 	(iii)	by either Party pursuant to Section 7.2(a)(ii)(A) [Effective Time Not Occurring Prior to Outside Date] or 7.2(a)(ii)(C) [Failure to Obtain Aastra Shareholder
Approval], but only if, in these termination events, (x) prior to such termination, a bona fide Acquisition Proposal for Aastra shall have been made or publicly announced by any Person other than Mitel and (y) within 12 months
following the date of such termination, (A) Aastra or one or more of its Subsidiaries enters into a definitive agreement in respect of an Acquisition Proposal (whether or not such Acquisition Proposal is the same Acquisition Proposal referred
to in paragraph (x) above) and such Acquisition Proposal is later consummated or (B) an Acquisition Proposal shall have been consummated (whether or not such Acquisition Proposal is the same Acquisition Proposal referred to in paragraph
(x) above), provided that for purposes of this Section 7.3(c)(iii), the term “Acquisition Proposal” shall have the meaning ascribed to such term in Section 1.1 except that a reference to “20 per cent” therein shall
be deemed to be a reference to “50 per cent”. 

  

	 	    	If an Aastra Termination Fee Event occurs, Aastra shall pay the Aastra Termination Fee to Mitel, by wire transfer of immediately available funds, as follows:

  

	 	(A)	if the Aastra Termination Fee is payable pursuant to Section 7.3(c)(i), the Aastra Termination Fee shall be payable within two (2) Business Days following
such termination; 

  
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	 	(B)	if the Aastra Termination Fee is payable pursuant to Section 7.3(c)(ii) the Aastra Termination Fee shall be payable prior to or simultaneously with such
termination; or 

  

	 	(C)	if the Aastra Termination Fee is payable pursuant to Section 7.3(c)(iii), the Aastra Termination Fee shall be payable concurrently upon the consummation of the
Acquisition Proposal referred to therein, and any Aastra Expense Fee paid shall be credited towards payment of the Aastra Termination Fee. 

  

	 	(d)	For the purposes of this Agreement, “Aastra Expense Fee Event” means the termination of this Agreement: 

 

	 	(i)	by Mitel or Aastra pursuant to Section 7.2(a)(ii)(C) [Failure to Obtain Aastra Shareholder Approval]; or 

 

	 	(ii)	by Mitel pursuant to Section 7.2(a)(iii)(B) [Breach of Conditions by Aastra]. 

If an Aastra Expense Fee Event occurs, Aastra shall pay the Aastra Expense Fee to Mitel, by wire transfer of immediately available funds
within two (2) Business Days following such termination, provided that, in the event of a termination of this Agreement pursuant to Section 7.2(a)(ii)(C), an Aastra Change of Recommendation occurred as a result of a Mitel Material Adverse
Effect, the Aastra Expense Fee shall not be payable. 
  

	 	(e)	For the purposes of this Agreement, “Mitel Termination Fee Event” means the termination of this Agreement: 

 

	 	(i)	by Aastra pursuant to Section 7.2(a)(iv)(A) [Mitel Recommendation of an Acquisition Proposal or Breach of Non-Solicit];

  

	 	(ii)	by Mitel pursuant to Section 7.2(a)(iii)(C) [Superior Proposal]; 

  

	 	(iii)	by either Party pursuant to Section 7.2(a)(ii)(A) [Effective Time Not Occurring Prior to Outside Date] if all of the conditions set forth in Sections 6.1 and 6.2
have been satisfied or waived by Mitel other than the condition in Section 6.2(e) and those conditions that by their terms are to be and can be satisfied by actions taken at the Effective Time; or 

 

	 	(iv)	 by either Party pursuant to Section 7.2(a)(ii)(A) [Effective Time Not Occurring Prior to Outside Date] or Section 7.2(a)(ii)(D) [Mitel
Shareholder Approval], but only if, in these termination events, (x) prior to such termination, a bona fide Acquisition Proposal for Mitel shall have been made or publicly announced by any Person other than Aastra and (y) within 12
months following the date of such termination, (A) Mitel or one or more of its Subsidiaries enters into a definitive agreement in respect of an Acquisition Proposal (whether or not such Acquisition Proposal is the

  
 - 83 -

	 	
same Acquisition Proposal referred to in paragraph (x) above) and such Acquisition Proposal is later consummated or (B) an Acquisition Proposal shall have been consummated (whether or
not such Acquisition Proposal is the same Acquisition Proposal referred to in paragraph (x) above), provided that for purposes of this Section 7.3(e)(iv), the term “Acquisition Proposal” shall have the meaning ascribed to such
term in Section 1.1 except that a reference to “20 per cent” therein shall be deemed to be a reference to “50 per cent”. 

  

	 	    	If a Mitel Termination Fee Event occurs, Mitel shall pay the Mitel Termination Fee to Aastra, by wire transfer of immediately available funds, as follows:

  

	 	(A)	if the Mitel Termination Fee is payable pursuant to Section 7.3(e)(i) or Section 7.3(e)(i), the Mitel Termination Fee shall be payable within two
(2) Business Days following such termination; 

  

	 	(B)	if the Mitel Termination Fee is payable pursuant to Section 7.3(e)(ii), the Mitel Termination Fee shall be payable prior to or simultaneously with such
termination; or 

  

	 	(C)	if the Mitel Termination Fee is payable pursuant to Section 7.3(e)(iv), the Mitel Termination Fee shall be payable concurrently upon the consummation of the
Acquisition Proposal referred to therein, and any Mitel Expense Fee paid shall be credited towards payment of the Mitel Termination Fee. 

  

	 	(f)	For the purposes of this Agreement, “Mitel Expense Fee Event” means the termination of this Agreement: 

 

	 	(i)	by Aastra or Mitel pursuant to Section 7.2(a)(ii)(D) [Mitel Shareholder Approval]; or 

 

	 	(ii)	by Aastra pursuant to Section 7.2(a)(iv)(B) [Breach of Conditions by Mitel]. 

 

	 	    	If a Mitel Expense Fee Event occurs, Mitel shall pay the Mitel Expense Fee to Aastra, by wire transfer of immediately available funds within two (2) Business Days
following such termination. 

  

	 	(g)	 Any Fee payable by Aastra or Mitel pursuant to this Agreement shall be paid free and clear of and without deduction or withholding for, or on account
of, any present or future Taxes, unless such deduction or withholding is required by Law. If Aastra or Mitel (as the case may be) is required by applicable Laws to deduct or withhold any Taxes from any payment of a Fee, (i) the amount payable
shall be increased as may be necessary so that, after making all required deductions or withholdings (including deductions and withholdings applicable to, and taking into account all Taxes on, or arising by reason of, the payment of additional

  
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amounts under this Section 7.3(g)), Mitel or Aastra (as the case may be) receives an amount equal to the amount that it would have received had no such deductions or withholdings been
required, (ii) Aastra or Mitel (as the case may be) shall make such required deductions or withholdings, and (iii) Aastra or Mitel (as the case may be) shall remit the full amount deducted or withheld to the appropriate Governmental Entity
in accordance with applicable Laws. 

  

	 	(h)	Each Party acknowledges that all of the payment amounts set out in this Section 7.3 are payments of liquidated damages which are a genuine pre-estimate of the
damages, which the Party entitled to such damages will suffer or incur as a result of the event giving rise to such payment and the resultant termination of this Agreement and are not penalties. Each of Aastra and Mitel irrevocably waives any right
it may have to raise as a defence that any such liquidated damages are excessive or punitive. For greater certainty, each Party agrees that, upon any termination of this Agreement under circumstances where Aastra or Mitel is entitled to a Fee and
such Fee is paid in full, Aastra or Mitel, as the case may be, shall be precluded from any other remedy against the other Party at Law or in equity or otherwise (including, without limitation, an order for specific performance), and shall not seek
to obtain any recovery, judgment, or damages of any kind, including consequential, indirect, or punitive damages, against the other Party or any of its Subsidiaries or any of their respective directors, officers, employees, partners, managers,
members, shareholders or affiliates or their respective representatives in connection with this Agreement or the transactions contemplated hereby; provided that the foregoing limitation shall not apply in the event of fraud or wilful breach of this
Agreement by a Party. 

  

	 	(i)	 Aastra’s enforcement of any Fee against Mitel (if the closing of the Arrangement does not occur) shall be the sole and exclusive remedy of Aastra
and its Subsidiaries and each of their respective directors, officers, employees, partners, managers, shareholders or affiliates or their respective representatives against the Financing Sources and their respective affiliates for any and all
losses, claims, expenses, liabilities or damages suffered or incurred by the Aastra or any other Person in connection with this Agreement, the Mitel Financing, the Mitel Commitment Letter (and the termination thereof), the transactions contemplated
hereby and thereby (and the abandonment or termination thereof) or any matter forming the basis of such termination and none of the Financing Sources shall have any further liability or obligation relating to or arising out of this Agreement or the
Mitel Financing, the Mitel Commitment Letter or the transactions contemplated hereby or thereby (or the abandonment or termination thereof) or any matters forming the basis for such termination upon payment of such amount. In addition, without
modifying or qualifying in any way the preceding sentence or implying any intent contrary thereto, Aastra, its Subsidiaries and each of their respective directors, officers, employees, partners, managers, shareholders or affiliates or their
respective representatives each hereby waive any rights or claims against the Financing Sources and hereby agree that in no event shall the Financing Sources have any liability or obligation to Aastra, its Subsidiaries or any of their respective
directors, officers, employees, partners, managers, 

  
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shareholders or affiliates or their respective representatives and in no event shall Aastra, its Subsidiaries or any of their respective directors, officers, employees, partners, managers,
shareholders or affiliates or their respective representatives seek or obtain any other damages of any kind against any Financing Source (including consequently, special, indirect or punitive damages), in each case, relating to or arising out of
this Agreement, the Mitel Financing, the Mitel Commitment Letter or the transactions contemplated hereby or thereby. 

  

	7.4	Amendment 

 Subject to the provisions of
the Interim Order, the Plan of Arrangement and applicable Laws, this Agreement and the Plan of Arrangement may, at any time and from time to time before or after the holding of the Aastra Meeting but not later than the Effective Time, be amended by
mutual written agreement of the Parties, without further notice to or authorization on the part of the Aastra Shareholders, and any such amendment may without limitation: 

 

	 	(a)	change the time for performance of any of the obligations or acts of the Parties; 

 

	 	(b)	waive any inaccuracies or modify any representation or warranty contained herein or in any document delivered pursuant hereto; 

 

	 	(c)	waive compliance with or modify any of the covenants herein contained and waive or modify performance of any of the obligations of the Parties; and

  

	 	(d)	waive compliance with or modify any mutual conditions precedent herein contained. 

 

	7.5	Waiver 

 Any Party may (a) extend the
time for the performance of any of the obligations or acts of the other Party, (b) waive compliance, except as provided herein, with any of the other Party’s agreements or the fulfilment of any conditions to its own obligations contained
herein, or (c) waive inaccuracies in any of the other Party’s representations or warranties contained herein or in any document delivered by the other Party; provided, however, that any such extension or waiver shall be valid only if set
forth in an instrument in writing signed on behalf of such Party and, unless otherwise provided in the written waiver, will be limited to the specific breach or condition waived. 

ARTICLE 8 

GENERAL PROVISIONS 
  

	8.1	Notices 

 All notices and other
communications given or made pursuant to this Agreement shall be in writing and shall be deemed to have been duly given and received on the day it is delivered, provided that it is delivered on a Business Day prior to 5:00 p.m. local time in the
place of delivery or receipt. However, if notice is delivered after 5:00 p.m. local time or if such day is not a Business Day then the notice shall be deemed to have been given and received on the next Business Day. Notice shall be sufficiently
given if delivered (either in Person, by courier service 

  
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or other personal method of delivery), or if transmitted by facsimile or email to the Parties at the following addresses (or at such other addresses as shall be specified by any Party by notice
to the other given in accordance with these provisions): 
  

	 	(a)	if to Mitel: 

 Mitel Networks
Corporation 
 350 Legget Drive 
 Kanata, ON, Canada K2K 2W7 
 Attention:      Steve
Spooner 
 Facsimile:     (613) 592-7807 

Email:           steve_spooner@mitel.com 

with a copy (which shall not constitute notice) to: 
 Osler, Hoskin & Harcourt LLP 
 1 First Canadian Place, Suite 6600

 Toronto, Ontario M5X 1B8 
 Attention:      Craig Wright and Jeremy Fraiberg 

Facsimile:     (416) 862-6666 
 Email:           cwright@osler.com and jfraiberg@osler.com 
  

	 	(b)	if to Aastra: 

 Aastra
Technologies Limited 
 155 Snow Boulevard 
 Concord, Ontario, Canada L4K 4N9 

Attention:      Francis Shen 
 Facsimile:     (905) 760-4238 

Email:           fshen@aastra.com 

with a copy (which shall not constitute notice) to: 
 McCarthy Tétrault LLP 
 Suite 5300, TD Bank Tower 

Box 48, 66 Wellington Street West 
 Toronto ON M5K 1E6 
 Attention:      Gary Girvan and
George Takach 
 Facsimile:     (416) 868-0673 

Email:           ggirvan@mccarthy.ca and gtakach@mccarthy.ca 

  
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	8.2	Governing Law 

 This Agreement shall be
governed, including as to validity, interpretation and effect, by the Laws of the Province of Ontario and the Laws of Canada applicable therein. Each of the Parties hereby irrevocably attorns to the exclusive jurisdiction of the courts of the
Province of Ontario in respect of all matters arising under and in relation to this Agreement and the Arrangement and waives any defences to the maintenance of an action in the Courts of the Province of Ontario. 

Notwithstanding anything herein to the contrary, the parties hereto and their respective Subsidiaries, affiliates, directors, officers, employees, agents
and representatives agree that any claim, controversy or dispute of any kind or nature (whether based upon contract, tort or otherwise) involving a Financing Source that is in any way related to this Agreement, the Arrangement or any of the
transactions contemplated by this Agreement, including but not limited to any dispute arising out of or relating in any way to the Mitel Financing or the Mitel Commitment Letter shall be governed by, and construed in accordance with, the laws of the
State of New York. 
 Notwithstanding the foregoing, each of the parties hereto hereby agrees that it will not bring or support any action,
cause of action, claim, cross-claim or third-party claim of any kind or description, whether in law or in equity, whether in contract or in tort or otherwise, against the Financing Sources in any way relating to this Agreement, the Mitel Financing,
the Mitel Commitment Letter, or any of the transactions contemplated hereby or thereby, including, without limitation, any dispute arising out of or relating in any way to the Mitel Financing or the performance thereof, in any forum other than the
Supreme Court of the State of New York, County of New York, or, if under applicable law exclusive jurisdiction is vested in the federal courts, the United States District Court for the Southern District of New York (and the appellate courts
thereof), and that the provisions of Section 8.9 relating to the waiver of jury trial shall apply to any such action, cause of action, claim, cross-claim or third-party claim. 

 

	8.3	Injunctive Relief 

 Subject to
Section 7.3, the Parties agree that irreparable harm would occur for which money damages would not be an adequate remedy at Law in the event that any of the provisions of this Agreement were not performed in accordance with their specific terms
or were otherwise breached. Accordingly, the Parties agree that, in the event of any breach or threatened breach of this Agreement by a Party, the non-breaching Party will be entitled, without the requirement of posting a bond or other security, to
equitable relief, including injunctive relief and specific performance, and the Parties shall not object to the granting of injunctive or other equitable relief on the basis that there exists an adequate remedy at law. Subject to Section 7.3,
such remedies will not be the exclusive remedies for any breach of this Agreement but will be in addition to all other remedies available at Law or equity to each of the Parties. 

 

	8.4	Time of Essence 

 Time shall be of the
essence in this Agreement. 
  

	8.5	Entire Agreement, Binding Effect and Assignment 

 This Agreement (including the exhibits and schedules hereto) and the Confidentiality Agreement constitute the entire agreement, and supersede all other prior agreements and understandings, both written
and oral, between the Parties, or any of them, with respect to the subject matter hereof and thereof and, except as expressly provided herein, this Agreement is not intended to 

  
 - 88 -

 
and shall not confer upon any Person other than the Parties any rights or remedies hereunder. This Agreement shall be binding upon and shall enure to the benefit of the Parties and their
respective successors and permitted assigns. Neither this Agreement nor any of the rights, interests or obligations hereunder may be assigned by any of the Parties without the prior written consent of the other Party. 

Except as otherwise expressly provided herein, no provision of this Agreement is intended to confer any rights, benefits, remedies, obligations or
liabilities hereunder upon any Person other than the parties hereto and their respective successors and permitted assigns; provided that the Financing Sources shall be intended third parties beneficiaries of Sections 7.3(i), 8.2, 8.6 and 8.9 and
shall be entitled to enforce such provisions directly (and no amendment or modification to such provisions in respect to the Financing Sources may be made without the prior consent of the Financing Sources). 

 

	8.6	No Liability 

 No director or officer of
Mitel shall have any personal liability whatsoever to Aastra under this Agreement, or any other document delivered in connection with the transactions contemplated hereby on behalf of Mitel. No director or officer of Aastra shall have any personal
liability whatsoever to Mitel under this Agreement, or any other document delivered in connection with the transactions contemplated hereby on behalf of Aastra. 
 Notwithstanding anything to the contrary contained herein, Aastra (on behalf of itself and any of its affiliates, directors, officers, employees, agents and representatives) hereby waives any rights or
claims against any Financing Source in connection with this Agreement, the Mitel Commitment Letter, the Mitel Financing, the definitive financing agreements or in respect of any other document or theory of law or equity (whether in tort, contract or
otherwise) or in respect of any oral or written representations made or alleged to be made in connection herewith or therewith and Aastra (on behalf of itself and any of its affiliates, directors, officers, employees, agents and representatives)
agrees not to commence any action or proceeding against any Financing Source in connection with this Agreement, the Mitel Commitment Letter, the Mitel Financing, the definitive financing agreements or in respect of any other document or theory of
law or equity and agrees to cause any such action or proceeding asserted by the (on behalf of itself and any of its affiliates, directors, officers, employees, agents and representatives) in connection with this Agreement, the Mitel Commitment
Letter, the Mitel Financing, the definitive financing agreements or in respect of any other document or theory of law or equity against any Financing Source to be dismissed or otherwise terminated. In furtherance and not in limitation of the
foregoing waiver, it is acknowledged and agreed that no Financing Source shall have any liability for any claims or damages to Aastra in connection with this Agreement, the Mitel Commitment Letter, the Mitel Financing, the definitive financing
agreements or the transactions contemplated hereby or thereby. 
  

	8.7	Severability 

 If any term or other
provision of this Agreement is invalid, illegal or incapable of being enforced by any rule or Law or public policy, all other conditions and provisions of this Agreement shall nevertheless remain in full force and effect so long as the economic or
legal substance of the transactions contemplated hereby is not affected in any manner materially adverse to any Party. 

  
 - 89 -

 
Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the Parties shall negotiate in good faith to modify this Agreement so as to effect the
original intent of the Parties as closely as possible in an acceptable manner to the end that the transactions contemplated hereby are fulfilled to the fullest extent possible. 

 

	8.8	Counterparts, Execution 

 This Agreement
may be executed in one or more counterparts, each of which shall be deemed to be an original but all of which together shall constitute one and the same instrument. The Parties shall be entitled to rely upon delivery of an executed facsimile or
similar executed electronic copy of this Agreement, and such facsimile or similar executed electronic copy shall be legally effective to create a valid and binding agreement between the Parties. 

 

	8.9	Waiver of Jury Trial 

 Each party hereto
(on behalf of itself and any of its affiliates, directors, officers, employees, agents and representatives) hereby waives, to the fullest extent permitted by applicable Laws, any right it may have to a trial by jury in respect of any suit, action or
other proceeding arising out of this Agreement or the transactions contemplated hereby, including but not limited to any dispute arising out of or relating to the Mitel Financing, the Mitel Commitment Letter, any of the transactions contemplated
thereby or the performance thereof, including in any action, proceeding, or counterclaim against any Financing Source. Each party hereto (a) certifies that no representative, agent or attorney of any other party has represented, expressly or
otherwise, that such party would not, in the event of any action, suit or proceeding, seek to enforce the foregoing waiver and (b) acknowledges that it and the other parties hereto have been induced to enter into this Agreement, by, among other
things, the mutual waiver and certifications in this Section 8.9. 
 [Remainder of page intentionally left blank]

  
 - 90 -

 IN WITNESS WHEREOF Mitel and Aastra have caused this Agreement to be executed as of the date first
written above by their respective officers thereunto duly authorized. 
  

					
	 MITEL NETWORKS CORPORATION

		
	 By:  
	 	 /s/ Steve Spooner

		 	Name:	 	Steve Spooner
		 	Title:	 	Chief Financial Officer

  

					
	 AASTRA TECHNOLOGIES LIMITED

		
	 By:  
	 	 /s/ Francis Shen

		 	Name:	 	Francis Shen
		 	Title:	 	Chairman and Co-Chief Executive Officer

 SCHEDULE A 
 FORM OF PLAN OF ARRANGEMENT UNDER SECTION 192 OF 
 THE CANADA
BUSINESS CORPORATIONS ACT 

  
 A-1

 SCHEDULE B 
 ARRANGEMENT RESOLUTION 
  

	1.	The arrangement (the “Arrangement”) under Section 192 of the Canada Business Corporations Act (the “CBCA”) of Aastra
Technologies Limited (“Aastra”), as more particularly described and set forth in the management information circular (the “Circular”) dated
·, 2013 of Aastra accompanying the notice of this meeting (as the Arrangement may be amended, modified or supplemented in
accordance with the arrangement agreement (the “Arrangement agreement”) made as of November 10, 2013, between Aastra and Mitel), is hereby authorized, approved and adopted. 

 

	2.	The plan of arrangement of Aastra (as it has been or may be amended, modified or supplemented in accordance with the Arrangement agreement (the “Plan of
Arrangement”)), the full text of which is set out in Schedule A to the Arrangement agreement, is hereby authorized, approved and adopted. 

  

	3.	The (i) Arrangement agreement and related transactions, (ii) actions of the directors of Aastra in approving the Arrangement agreement, and (iii) actions
of the directors and officers of Aastra in executing and delivering the Arrangement agreement, and any amendments, modifications or supplements thereto, are hereby ratified and approved. 

 

	4.	Aastra be and is hereby authorized to apply for a final order from the Ontario Superior Court of Justice to approve the Arrangement on the terms set forth in the
Arrangement agreement and the Plan of Arrangement (as they may be amended, modified or supplemented and as described in the Circular). 

  

	5.	Notwithstanding that this resolution has been passed (and the Arrangement adopted) by the shareholders of Aastra or that the Arrangement has been approved by the
Ontario Superior Court of Justice, the directors of Aastra are hereby authorized and empowered to, without notice to or approval of the shareholders of Aastra, (i) amend, modify or supplement the Arrangement agreement or the Plan Arrangement to
the extent permitted by the Arrangement agreement and (ii) subject to the terms of the Arrangement agreement, not to proceed with the Arrangement and related transactions. 

 

	6.	Any officer or director of Aastra is hereby authorized and directed for and on behalf of Aastra to execute and deliver for filing with the Director under the CBCA,
articles of arrangement and such other documents as are necessary or desirable to give effect to the Arrangement in accordance with the Arrangement agreement, such determination to be conclusively evidenced by the execution and delivery of such
articles of arrangement and any such other documents. 

  

	7.	Any officer or director of Aastra is hereby authorized and directed for and on behalf of Aastra to execute or cause to be executed and to deliver or cause to be
delivered all such other documents and instruments and to perform or cause to be performed all such other acts and things as such person determines may be necessary or desirable to give full effect to the foregoing resolution and the matters
authorized thereby, such determination to be conclusively evidenced by the execution and delivery of such document or instrument or the doing of any such act or thing. 

  
 B-1EX-10.2

 Exhibit 10.2 

EXECUTION VERSION 
  

			
	 JEFFERIES FINANCE LLC

520 Madison Avenue
 New York, New
York 10022
	  	 THE TORONTO-DOMINION BANK

8th Floor, TD Bank Tower
 66
Wellington Street West
 Toronto, Ontario

Canada, M5K 1A2
  

TD SECURITIES (USA) LLC
 31
West 52nd Street
 New York, NY

10019-6101

 CONFIDENTIAL 

November 10, 2013 

COMMITMENT LETTER 
 Mitel Networks
Corporation 
 350 Legget Drive 
 Ottawa, Ontario, Canada K2K2W7

 Attention: Steve Spooner, Chief Financial Officer 
  

	 	Re:	Acquisition of Aastra Technologies Limited 

 Ladies and Gentlemen: 

You have advised Jefferies Finance LLC (“Jefferies Finance”), The Toronto-Dominion Bank
(“Toronto-Dominion”) and TD Securities (USA) LLC (“TD Securities” and, collectively with Toronto-Dominion and Jefferies Finance, the “Commitment Parties”,
“we” or “us”) that Mitel Networks Corporation, a corporation organized under the federal laws of Canada (the “Acquiror” or “you”), intends to acquire,
directly or indirectly, (the “Acquisition”) all of the issued and outstanding capital stock of all classes (the “Shares”) of Aastra Technologies Limited, a corporation organized under the federal laws
of Canada (the “Target” and, together with its subsidiaries, the “Acquired Business”) by way of a statutory plan of arrangement (the “Arrangement”) and to refinance (together
with any applicable prepayment premium or fee, with the commitments thereunder being terminated, and all guarantees and security in respect thereof being released) all of the existing funded indebtedness (the “Existing Debt”)
of the Acquiror and its subsidiaries and the Acquired Business (the “Refinancing”). Capitalized terms used but not defined herein and defined in any exhibit hereto have the meanings assigned to them in such exhibit. 

You have advised us that the total cash purchase price for the Acquisition (including fees, commissions and expenses and the
Refinancing) (the “Purchase Price”) will be financed from the following sources: 
 (i) borrowings
under a $50.0 million senior secured first lien revolving credit facility having the terms set forth in Exhibit A hereto (the “Revolving Credit Facility”), it being understood and agreed that no more than an amount to
be mutually agreed of borrowings under the Revolving Credit Facility may be used on the Closing Date to finance the Acquisition and for the payment of fees and expenses (including upfront fees or original issue discount) payable in connection with
the Facilities (as defined below), and 
 (ii) a $355.0 million senior secured first lien term loan facility having the terms set forth in
Exhibit A hereto (the “Term Loan Facility” and, together with the Revolving Credit Facility, the “Facilities”). 

 The transactions described in clauses (i) and (ii) above are referred to as the “Debt
Financing” and, together with the Acquisition and the Refinancing and the payment of all related fees, commissions and expenses are collectively referred to as the “Transactions.” You and your subsidiaries
(including the Target and its subsidiaries) are referred to herein as the “Company.” As used in this Commitment Letter and the other Debt Financing Letters (as defined below), the words “include,”
“includes” and “including” shall be deemed to be followed by the phrase “without limitation.” 
 1. The
Commitments. 
 In connection with the foregoing, (x) Jefferies Finance is pleased to inform you that it hereby commits directly or
through one or more of its affiliates, to provide 50% of the Term Loan Facility and 50% of the Revolving Credit Facility and (y) Toronto-Dominion is pleased to inform you that it hereby commits directly or through one or more of its affiliates,
to provide 50% of the Term Loan Facility and 50% of the Revolving Credit Facility. The commitments of Jefferies Finance and Toronto-Dominion are several and not joint. 

The commitments described in this Section 1 are collectively referred to herein as the
“Commitments.” Each applicable Commitment Party’s obligation to the Borrowers to fund the Facilities on the Closing Date is subject only to the specified closing conditions set forth in Section 3 of this
letter (this letter, including the exhibits, schedules and annexes hereto, collectively, this “Commitment Letter”) among you and each of us and on Exhibit B and Exhibit C hereto. Notwithstanding anything to the
contrary in this Commitment Letter or the fee letter dated as of the date hereof (the “Fee Letter” and, together with this Commitment Letter, the “Debt Financing Letters”), among you and each of us,
except as otherwise set forth in Exhibit A, Exhibit B and Exhibit C hereto, the terms of this Commitment Letter are intended as an outline of certain of the material provisions of the Facilities, but do not include all of the
terms, covenants, representations, warranties, default clauses and other provisions that will be contained in the definitive documents relating to the Debt Financing, which shall be prepared by our counsel (collectively, the “Definitive
Debt Documents”); provided, that the credit agreement in respect of the Facilities shall not contain any (x) representations and warranties other than those described under the caption
“Representations and Warranties” as set forth in Exhibit A hereto, (y) any affirmative, negative or financial covenants other than those described under the captions “Affirmative Covenants”, “Negative
Covenants” and “Financial Covenant” as set forth in Exhibit A hereto or (z) any defaults or events of default other than those described under the caption “Events of Default” as set forth in Exhibit A
hereto; and further provided that there shall be no closing condition to the Facilities contained in the Definitive Debt Documents that is not specifically set forth in Section 3 hereof or on Exhibit
B or Exhibit C to this Commitment Letter. Those matters that are not covered or made clear in the Debt Financing Letters are subject to mutual agreement of each of the parties hereto. No party hereto has been authorized by us to make any
oral or written statements or representations that are inconsistent with the Debt Financing Letters. 
 2. Titles and
Roles. As consideration for the Commitments, you hereby retain and will cause your affiliates to retain (i) Jefferies Finance and TD Securities or their respective designees to act as 

  
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joint lead arrangers and joint bookrunners in connection with the Facilities (in such capacities, each an “Arranger” and, together the
“Arrangers”), and (ii) Jefferies Finance or its designees to act as sole administrative agent and sole collateral agent in connection with the Facilities. It is further agreed that Jefferies Finance will have “left
side” designation and shall appear on the top left of any offering or marketing materials in respect of the Facilities and shall hold the leading role and responsibilities associated with such designation, including maintaining sole
“physical books” and syndication rights in respect of the Facilities and TD Securities will have “right side” designation and shall appear on the top right of any offering or marketing materials in respect of the Facilities. You
further agree that no other titles shall be awarded and no compensation (other than that expressly contemplated by the Debt Financing Letters) shall be paid in connection with the Facilities, unless you and each of us shall reasonably agree.

 3. Conditions Precedent. The closing of the Facilities and the making of the initial loans and other extensions of credit under
the Facilities on the Closing Date are conditioned solely upon satisfaction or waiver by us of each of the following conditions: (i) since December 31, 2012, there shall not have occurred any Target Material Adverse Effect (as defined
below), (ii) since April 30, 2013, there shall not have occurred any Material Adverse Effect (as defined below), (iii) the Specified Purchase Agreement Representations (as defined below) shall be true and correct in all material
respects (provided, that any representation and warranty that is qualified as to “materiality,” “material adverse effect” or similar language shall be true and correct in all respects (after giving effect to any such
qualification therein)) and (iv) the other conditions expressly set forth in Exhibit B and Exhibit C to this Commitment Letter. 

For purposes hereof, the following terms shall have the following meanings: 

“Target Material Adverse Effect” means any event, change, occurrence, effect or state of facts, that, individually or
in the aggregate with other events, changes, occurrences, effects or states of facts is, or would reasonably be expected to be, material and adverse to the business, operations, results of operations, capital, property, assets, liabilities,
obligations (whether absolute, accrued, conditional or otherwise) or financial condition of the Target and its subsidiaries taken as a whole except to the extent of any fact or state of facts, event, change, occurrence or effect resulting from or
arising in connection with: 
  

	 	(a)	any change or development affecting the industries in which the Target and its subsidiaries operate; 

  

	 	(b)	any change or development in global, national or regional political conditions (including any act of terrorism or any outbreak of hostilities or war or any escalation or worsening thereof), any natural disaster or in
general economic, business or regulatory conditions or in global financial, credit, currency or securities markets; 

  

	 	(c)	any adoption, proposed implementation or change in applicable Law or any interpretation thereof by any governmental entity; 

  

	 	(d)	any change in International Financial Reporting Standards or changes in applicable regulatory accounting requirements applicable to the industries in which it conducts business; 

 

	 	(e)	the announcement of the entering into of the Arrangement Agreement and the transactions contemplated therein; 

  

	 	(f)	actions or inactions expressly required by the Arrangement Agreement or that are taken with the prior written consent of the applicable party thereto and the Arrangers; 

  
 3 

	 	(g)	any change in the market price or trading volume of any securities of the Target (it being understood, without limiting the applicability of paragraphs (a) through (f), that the causes underlying such changes in
market price or trading volume may be taken into account in determining whether a Target Material Adverse Effect has occurred), or any suspension of trading in securities generally or on any securities exchange on which any securities of the Target
trades; or 

  

	 	(h)	the failure, in and of itself, of the Target to meet any internal or public projections, forecasts or estimates of revenues or earnings (it being understood, without limiting the applicability of paragraphs
(a) through (f), that the causes underlying such failure may be taken into account in determining whether a Target Material Adverse Effect has occurred); 

provided, however, that any such event, change, occurrence, effect or state of facts referred to in clauses (a), (b), (c) or
(d) above does not primarily relate only to (or have the effect of primarily relating only to) the Target and its subsidiaries, taken as a whole, or disproportionately adversely affects the Target and its subsidiaries, taken as a whole,
compared to other companies of similar size operating in the industries in which the Target and its subsidiaries operate; references in the Arrangement Agreement to dollar amounts are not intended to be and shall not be deemed to be illustrative or
interpretative for purposes of determining whether a Target Material Adverse Effect has occurred. 
 “Material Adverse
Effect” means any event, change, occurrence, effect or state of facts, that, individually or in the aggregate with other events, changes, occurrences, effects or states of facts is, or would reasonably be expected to be, material and
adverse to the business, operations, results of operations, capital, property, assets, liabilities, obligations (whether absolute, accrued, conditional or otherwise) or financial condition of the Acquiror and its subsidiaries taken as a whole except
any such event, change, occurrence, effect or state of facts resulting from or arising in connection with: 
  

	 	(a)	any change or development affecting the industries in which the Acquiror and its subsidiaries operate; 

  

	 	(b)	any change or development in global, national or regional political conditions (including any act of terrorism or any outbreak of hostilities or war or any escalation or worsening thereof), any natural disaster or in
general economic, business or regulatory conditions or in global financial, credit, currency or securities markets; 

  

	 	(c)	any adoption, proposed implementation or change in applicable Law or any interpretation thereof by any governmental entity; 

  

	 	(d)	any change in United States generally accepted accounting principles or changes in applicable regulatory accounting requirements applicable to the industries in which it conducts business; 

 

	 	(e)	the announcement of the entering into of the Arrangement Agreement and the transactions contemplated herein; 

  

	 	(f)	actions or inactions expressly required by the Arrangement Agreement or that are taken with the prior written consent of the applicable party thereto and the Arrangers; 

 

	 	(g)	any change in the market price or trading volume of any securities of the Acquiror (it being understood, without limiting the applicability of paragraphs (a) through (f), that the causes underlying such changes in
market price or trading volume may be taken into account in determining whether a Material Adverse Effect has occurred), or any suspension of trading in securities generally or on any securities exchange on which any securities of the Acquiror
trades; or 

  
 4 

	 	(h)	the failure, in and of itself, of the Acquiror to meet any internal or public projections, forecasts or estimates of revenues or earnings (it being understood, without limiting the applicability of paragraphs
(a) through (f), that the causes underlying such failure may be taken into account in determining whether a Material Adverse Effect has occurred); 

provided, however, that any such event, change, occurrence, effect or state of facts referred to in paragraphs (a), (b), (c) or (d),
above does not primarily relate only to (or have the effect of primarily relating only to) the Acquiror and its subsidiaries taken as a whole, or disproportionately adversely affects the Acquiror and its subsidiaries, taken as a whole, compared to
other companies of similar size operating in the industries in which the Acquiror and its subsidiaries operate; references in the Arrangement Agreement to dollar amounts are not intended to be and shall not be deemed to be illustrative or
interpretative for purposes of determining whether a Material Adverse Effect has occurred. 
 Notwithstanding anything in the Debt Financing
Letters, the Definitive Debt Documents or any other letter agreement or other undertaking concerning the financing of the Transactions to the contrary, (i) the only representations and warranties the accuracy of which shall be a condition to
the availability of the Facilities and the making of the initial loans and other extensions of credit on the Closing Date shall be (A) such of the representations and warranties with respect to the Acquired Business in the Arrangement Agreement
(as hereinafter defined) as are material to the interests of the Lenders or the Arrangers, but only to the extent that you have (or your applicable affiliate has) the right to terminate your (or its) obligations under the Arrangement Agreement or
decline to consummate the Acquisition as a result of a breach of such representations and warranties (as determined without giving effect to any waiver, amendment or other modification thereto, unless such waiver, amendment or other modification has
been consented to by the Arrangers) (collectively, the “Specified Purchase Agreement Representations”) and (B) the Specified Representations (as defined below) and (ii) the terms of the Definitive Debt Documents
shall be in a form such that they do not impair availability of the Facilities and the making of the initial loans and other extensions of credit on the Closing Date if the conditions expressly set forth in this Section 3 of the Commitment
Letter and the other conditions expressly set forth in Exhibit B and Exhibit C to this Commitment Letter are satisfied or waived by us (it being understood that, to the extent any Collateral (other than to the extent that a lien on
such Collateral may be perfected (x) by the filing of a financing statement (or local law equivalent) under the Uniform Commercial Code or a Personal Property Security Act, or (y) by the delivery of stock certificates of the
Acquiror’s U.S. and Canadian subsidiaries which are required to be delivered under Exhibit A to this Commitment Letter) is not or cannot be perfected on the Closing Date after your use of commercially reasonable efforts to do so, the
perfection of a security interest in such Collateral shall not constitute a condition precedent to the availability of the Facilities and the making of the initial loans and other extensions of credit on the Closing Date, but shall be required to be
perfected (i) within 30 days after the Closing Date with respect to such Collateral that may be perfected by the filing of a security agreement on the applicable form (or local law equivalent) with the United States Patent and Trademark Office,
the United States Copyright Office or the Canadian Intellectual Property Office, and (ii) within 60 days after the Closing Date in respect of such Collateral not described in the immediately preceding clause (i) (in each case subject to
extensions granted by the Administrative Agent, in its sole discretion). For purposes hereof, “Specified Representations” means the representations and warranties set forth in the Definitive Debt Documents relating to
corporate or other organizational existence, organizational power and authority (as to execution, delivery and performance of the applicable Definitive Debt Documents), the due authorization, execution, delivery and enforceability of the applicable
Definitive Debt Documents, solvency of the Acquiror and its subsidiaries on a pro forma consolidated basis on the Closing Date, no conflicts entering into and performance of the Definitive Debt Documents with charter documents or material laws,
Federal Reserve margin regulations, the Patriot Act, the Anti-Money Laundering Act, FCPA, OFAC, the Investment Company Act and, subject to permitted liens and the limitations set forth in the prior sentence, the creation, validity, perfection and
priority of security interests in the Collateral. This paragraph shall be referred to herein as the “Certain Funds Provision”. 

  
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 4. Syndication. 

(a) The Arrangers reserve the right, at any time after the date hereof and prior to or after execution of the Definitive Debt Documents, to
syndicate all or part of their Commitments to banks, financial institutions and other entities identified by Jefferies Finance in consultation with TD Securities and you and, with respect to the Revolving Credit Facility only, subject to your
consent (such consent not to be unreasonably withheld, delayed or conditioned) (collectively, with Jefferies Finance and Toronto-Dominion, the “Lenders”). The Commitments of each applicable Commitment Party shall be reduced
dollar-for-dollar as and when corresponding commitments are received from any Lenders; provided that, no such reduction shall relieve such Commitment Party of its obligation to fund on the Closing Date the portion of its Commitments so
reduced to the extent any Lender fails, upon satisfaction or waiver of all conditions to such Lender making its initial extensions of credit on the Closing Date as set forth or referred to in Section 3 above, to fund its commitment on the
Closing Date; provided, further, that unless you agree in writing, we shall retain exclusive control over the rights and obligations with respect to our respective Commitments in respect of the Facilities, including all rights with respect to
consents, modifications, supplements and amendments, until the Closing Date has occurred. Jefferies Finance will exclusively manage all aspects of any such syndication in consultation with TD Securities and you, including decisions as to the
selection of prospective Lenders to be approached, when they will be approached, when their commitments will be accepted, which prospective Lenders will participate (subject to your rights under the first sentence of this paragraph), the allocation
of the commitments and naming rights among the Lenders, and the amount and distribution of fees to Lenders, it being understood and agreed that we will not syndicate to (i) those persons that are competitors (to be defined in the Loan
Documents) of you or your subsidiaries or the Target and its subsidiaries or (ii) such other persons in each case, identified in writing to the Arrangers on the date hereof (and in the case of the persons identified in writing to us under
clause (ii), any of such person’s affiliates that are identifiable on the basis of such affiliate’s name, by such affiliate’s investment manager’s name or such affiliate’s parent entity’s name) (collectively, the
“Disqualified Lenders”). To assist us in the syndication efforts, you agree to furnish, prepare and provide (and to use your commercially reasonable efforts to cause the Acquired Business to prepare and provide) to us all
customary information with respect to the Company, the Transactions and the other transactions contemplated hereby, including such Projections (defined below) as any of us may reasonably request in connection with the syndication of the Commitments;
provided that, following the consummation of the Acquisition, you shall cause the Acquired Business to prepare and provide us with such information. 

(b) We intend to commence syndication efforts promptly upon your execution of this Commitment Letter, and you agree to assist us until the
date that is the earlier of (i) 90 days after the Closing Date and (ii) the date on which a Successful Syndication (as defined in the Fee Letter) is achieved but in no event shall such date be earlier than the Closing Date (such earlier
date referred to in clause (i) and (ii), the “Syndication Date”). Such assistance shall include: 
 (i) your
using commercially reasonable efforts to ensure that syndication efforts benefit from your and the Acquired Business’ existing relationships with financial institutions, 

(ii) your providing direct contact between your senior management, representatives and advisors, on the one hand, and the senior management
representatives and advisors of the proposed Lenders, on the other hand (and (x) prior to the consummation of the Acquisition, your using commercially reasonable efforts to cause, and (y) thereafter, your causing direct contact between
senior management, representatives and advisors of the Acquired Business on the one hand, and the proposed Lenders, on the other hand), 

  
 6 

 (iii) your assistance (and (x) prior to the consummation of the Acquisition, your using
commercially reasonable efforts to cause, and (y) thereafter, your causing the Acquired Business to assist) in the preparation of a customary confidential information memoranda (the “Confidential Information
Memorandum”), and other marketing materials to be used in connection with the syndication of our Commitments (together with the Confidential Information Memorandum, the “Materials”) and including any versions of
the Materials required pursuant to paragraph (c) below, 
 (iv) your providing to us of copies of any due diligence reports or
memoranda prepared at your direction or any of your affiliates by legal, accounting, tax or other third party advisors in connection with the Acquisition, subject to the delivery by us to you and to any such preparers of customary non-disclosure
agreements as shall be reasonably requested, 
 (v) your causing us to receive for distribution to the prospective Lenders, at least five
business days prior to the Closing Date a copy of the credit agreement in respect of the Facilities in the form agreed to by the Arrangers and the Borrowers, 

(vi) your using commercially reasonable efforts to obtain prior to the commencement of the Marketing Period a public corporate rating and a
corporate family rating (but no specific rating in either case) for the Borrowers from each of Standard & Poor’s Financial Services LLC, a subsidiary of The McGraw-Hill Companies, Inc. (“S&P”) and
Moody’s Investors Service, Inc. (“Moody’s”), respectively, and public facility ratings (but not a specific ratings) from each of S&P and Moody’s for the Facilities, and 

(vii) your hosting with us (and to the extent any of us requests that senior management or representatives of the Target attend, you shall
use your commercially reasonably efforts to cause them to attend) of meetings with prospective Lenders during regular business hours at such times and in such places as mutually agreed. 

Notwithstanding anything to the contrary contained in this Commitment Letter or the Fee Letter, the successful completion of the syndication
of the Facilities shall not constitute a condition precedent to the availability and initial funding of the Facilities on the Closing Date. 

(c) You agree, at Jefferies Finance’s request, to assist in the preparation of a version of any Materials consisting exclusively of
information and documentation that is either (i) publicly available or (ii) not material with respect to the Company, its affiliates or any of its or their respective securities for purposes of Canadian or United States federal, state or
provincial securities laws (such information and Materials, “Public Information”). In addition, you agree that, unless specifically labeled “Private – Contains Non-Public Information,” no Materials disseminated
to potential Lenders in connection with the syndication of the Facilities, whether through an Internet website, electronically, in presentations, at meetings or otherwise, will contain any Material Non-Public Information (as defined below). Any
information and documentation that is not Public Information is referred to herein as “Material Non-Public Information.” It is understood that in connection with your assistance described above, authorization letters will be
included in any information package and presentation whereby you authorize the distribution of such information to prospective Lenders, it being understood that the authorization letter for Public Information shall contain a representation by you to
the Lenders that the Public Information does not include any such Material Non-Public Information, each letter shall contain a customary “10b-5” representation, and the information package containing solely Public Information will contain
customary language exculpating you, the Target and your and their respective affiliates and the Arrangers and their respective affiliates, with respect to any liability related to the use of the contents of such information package or any related
marketing materials, by any recipients thereof. You acknowledge and agree that the following documents contain and shall contain solely Public Information (unless you notify us promptly that any such document contains Material Non-Public
Information, including by e-mail): (i) drafts and final term sheets and Definitive Debt Documents with respect to the 

  
 7 

 
Facilities, (ii) administrative materials prepared by us for prospective Lenders (including a lender meeting invitation, Lender allocations, if any, and funding and closing memoranda), and
(iii) term sheets and notification of changes in the terms of the Facilities. If reasonably requested by us, you shall identify Public Information by clearly and conspicuously marking the same as “PUBLIC”. 

(d) You agree that all Materials and Information (as defined below) (including draft and execution versions of the Definitive Debt Documents
and draft or final offering materials relating to contemporaneous securities issuances by the Company) may, subject to the limitations in Section 9 of this Commitment Letter, be disseminated for syndication purposes in accordance with our
standard syndication practices (including through hard copy and via one or more internet sites (including an IntraLinks, SyndTrak or similar workspace), e-mail or other electronic transmissions). Without limiting the foregoing, you authorize, and
will use your commercially reasonable efforts to obtain contractual undertakings from the Acquired Business to authorize, the use of your and its logos in connection with any such dissemination. You further agree that, at its expense, either
Arranger may place advertisements in financial and other newspapers and periodicals or on a home page or similar place for dissemination of information on the Internet or worldwide web as such Arranger may choose, and circulate similar promotional
materials, after the closing of the Transactions in the form of a “tombstone” or otherwise, containing information customarily included in such advertisements and materials, including (i) the names of the Company and its affiliates
(or any of them), (ii) our and our affiliates’ titles and roles in connection with the Transactions, and (iii) the amount, type and closing date of such Transactions. 

5. Information. You shall represent and warrant on the Closing Date that (and, with respect to the Target and its subsidiaries, to the
best of your knowledge that): 
 (a) all written information (excluding, for this purpose, all immaterial information, but, in all events,
including the Materials) and data other than the Projections (as defined below), forward-looking information and information of a general economic or industry-specific nature (including the Materials, the “Information”) that
has been or will be made available to us by or on behalf of you or any of your representatives with respect to the Company is or will be, when furnished, when taken as a whole, complete and correct in all material respects, 

(b) none of the Information, when taken as a whole, shall, when furnished or on the Closing Date and when taken as a whole, contain any untrue
statement of a material fact or omit to state a material fact necessary to make the statements contained therein not materially misleading, taken as a whole, in light of the circumstances under which such statements are made (after giving effect to
all supplements and updates thereto), and 
 (c) all projections and other forward-looking information that have been or will be made
available to any of us by or on behalf of you or the Acquired Business or any of your or its respective representatives (collectively, the “Projections”) have been or will be prepared in good faith based upon
(i) accounting principles consistent with the most recent historical audited financial statements of the Acquired Business and (ii) assumptions that are believed by you to be reasonable at the time made (it being understood that any such
Projections are not to be viewed as facts, are not a guarantee of financial performance and are subject to uncertainties and contingencies, many of which are beyond your control, that no assurance can be given that any particular Projections will be
realized, that actual results may differ and that such differences may be material). 
 You agree that, if at any time prior to the later of
the Closing Date and the Syndication Date, you become aware that any of the representations and warranties in the preceding sentence would be incorrect if the Information or Projections were then being furnished and such representations and
warranties were then being made, you shall, at such time, (i) with respect to Information and/or Projections relating to you or your subsidiaries supplement or cause to be supplemented promptly such Information and/or Projections, as the case
may be, in order that such representations and warranties will be correct in all 

  
 8 

 
material respects under those circumstances and (ii) with respect to Information and/or Projections relating to the Target or its subsidiaries, use your commercially reasonable efforts to
cause the Target to supplement such information in order that such representations and warranties to your knowledge will be correct in all material respects under those circumstances. 

You shall be solely responsible for Information, including the contents of all Materials. We (i) will be relying on Information and data
provided by or on behalf of you or the Acquired Business or any of your or its representatives or otherwise available from generally recognized public sources, without having independently verified the accuracy or completeness of the same,
(ii) do not assume responsibility for the accuracy or completeness of any such Information and data and (iii) will not make an appraisal of your assets or liabilities or the Acquired Business. You shall (i) furnish us with all
Information and data that we may reasonably request in connection with our activities on behalf of you and your affiliates and the Acquired Business and (ii) provide us full access, as reasonably requested, to your respective officers,
directors, employees and professional advisors and use commercially reasonable efforts to provide us full access, as reasonably requested, to those of the Acquired Business; provided that, following the consummation of the Acquisition, you shall
cause the Acquired Business to provide us full access, as reasonably requested, to such persons or entities. 
 6. Clear Market. You
agree that, from the date hereof until the Syndication Date, you will not, and you will use commercially reasonable efforts not to permit the Acquired Business to, directly or indirectly, (i) syndicate, place, sell or issue, (ii) attempt
or offer to syndicate, place, sell or issue, (iii) announce or authorize the announcement of the syndication, placement, sale or issuance of, or (iv) engage in discussions concerning the syndication, placement, offering, sale or issuance
of, any debt facility, or debt security of you, the Acquired Business or any of your or its respective affiliates (other than the Debt Financing contemplated hereby), including any renewals or refinancings of any existing debt facility, without each
Arranger’s prior written consent. Notwithstanding anything in this Commitment Letter to the contrary, the provisions of this Section 6 shall not apply in the event of a material breach by any Commitment Party of its funding
obligations under this Commitment Letter. 
 7. Fees and Expenses. As consideration for the Commitments and our other undertakings
hereunder, you hereby agree to pay or cause to be paid to us the fees, expenses and other amounts set forth in the Debt Financing Letters. 

8. Indemnification and Waivers. You agree to indemnify and hold harmless each of us, the Lenders and each of our and their respective
affiliates (including, without limitation, controlling persons) and each director, officer, employee, advisor, agent, affiliate, successor, partner, representative and assign of each of the foregoing (each an “Indemnified
Person”) from and against any and all actions, suits, investigation, inquiry, claims, actual losses, damages, liabilities or proceedings of any kind or nature whatsoever (each a “Claim”) which may be incurred by
or asserted against or involve any such Indemnified Person as a result of or arising out of or in any way related to or resulting from the Debt Financing Letters, the Facilities, the use of proceeds thereof, the Transactions or the other
transactions contemplated hereby or thereby (regardless of whether any such Indemnified Person is a party thereto and regardless of whether such matter is initiated by a third party or otherwise) (any of the foregoing, a
“Proceeding”), and you agree to reimburse each Indemnified Person within ten days following demand for any reasonable and documented (pursuant to a summary statement thereof) legal or other out-of-pocket expenses incurred in
connection with investigating, defending, preparing to defend or participating in any such Proceeding; provided, however, that no Indemnified Person will be indemnified for any such cost, expense or liability to the extent determined by a final
non-appealable judgment of a court of competent jurisdiction to have resulted from (i) the gross negligence, willful misconduct or bad faith of such Indemnified Person, (ii) a material breach by an Indemnified Person of its obligations
under this Commitment Letter or the Fee Letter at a time when you have not breached your obligations hereunder in any material respect, or (iii) a dispute among Indemnified Parties not arising from any breach by you of your obligations
hereunder in any material respect (other than a claim against any Commitment Party 

  
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solely in its capacity as an Arranger or Agent). In the case of any Proceeding to which the indemnity in this paragraph applies, such indemnity and reimbursement obligations shall be effective,
whether or not such Proceeding is brought by you, the Target, any of your or their respective securityholders or creditors, an Indemnified Person or any other person, or an Indemnified Person is otherwise a party thereto and whether or not any
aspect of the Debt Financing Letters, the Facilities or any of the Transactions are consummated. 
 Notwithstanding any other provision of
the Debt Financing Letters, (i) no Indemnified Person shall be responsible or liable for damages arising from the unauthorized use by others of information or other materials obtained through internet, electronic, telecommunications or other
information transmission, and (ii) no Indemnified Person shall be liable for any indirect, special, punitive or consequential damages in connection with its activities related to the Facilities. 

You shall not settle or compromise or consent to the entry of any judgment in or otherwise seek to terminate any pending or threatened Claim
in which any indemnified person is or could be a party and as to which indemnification or contribution could have been sought by such Indemnified Person hereunder whether or not such indemnified person is a party to any Debt Financing Letter, unless
(i) such indemnified person and each other Indemnified Person from which such Indemnified Person could have sought indemnification or contribution have given their prior written consent, which may be given or withheld in their sole discretion
or (ii) the settlement, compromise, consent or termination (A) includes an express unconditional release of all indemnified persons and their respective affiliates from all losses, claims, damages and liabilities, directly or indirectly,
arising out of, relating to, resulting from or otherwise in connection with such Claim and (B) does not include any statement as to or any admission of fault, culpability, wrongdoing or a failure to act by or on behalf of any Indemnified
Person. 
 9. Confidentiality. This Commitment Letter and the Fee Letter are each delivered to you on the understanding that neither
this Commitment Letter, the Fee Letter, the existence of this Commitment Letter or the Fee Letter nor any of their terms or substance will be disclosed by you, directly or indirectly, to any other person or entity except (a) as required by
applicable law or compulsory legal process (in which case you agree to inform each of us promptly thereof and to cooperate with each of us in securing a protective order in respect thereof to the extent lawfully permitted to do so), (b) to you
and your officers, directors, employees, stockholders, attorneys, accountants and advisors on a confidential basis and only in connection with the Transactions, (c) the Term Sheet may be disclosed to rating agencies in connection with their
review of the Facilities or the Company, (d) the information contained in this Commitment Letter (but not that contained in the Fee Letter) may be disclosed in any Confidential Information Memorandum or in connection with the syndication of the
Facilities, (e) this Commitment Letter (but not the Fee Letter) may be disclosed to the Acquired Business and their respective officers, directors, employees, attorneys, accountants and advisors, in each case on a confidential basis and only in
connection with the Transactions, (f) this Commitment Letter and the information contained in this Commitment Letter (but not the Fee Letter) may be disclosed (i) to the extent required by the applicable rules of any national securities
exchange, and/or (ii) to the extent required by applicable U.S. or Canadian securities laws, in connection with any Securities and Exchange Commission or other national securities exchange filings relating to the Acquisition and (g) to the
extent portions thereof have been redacted in a manner reasonably agreed by us, you may disclose the Fee Letter and each of the contents thereof to the Acquired Business and their respective officers, directors, employees, attorneys, accountants and
advisors, in each case on a confidential basis and only in connection with the Transactions. You may also disclose, on a confidential basis, the aggregate amount of fees payable under the Fee Letter as part of a generic disclosure regarding sources
and uses (but without disclosing any specific fees set forth therein) in connection with the syndication of the Facilities. 
 Each
Commitment Party and its affiliates shall use all information received by it and them from you, the Acquired Business or your or its respective affiliates and representatives in connection with the Transactions solely for the purposes of providing
the services contemplated by this Commitment Letter 

  
 10 

 
and shall treat confidentially all such information; provided, however, that nothing herein shall prevent any Commitment Party from disclosing any such information (a) to Moody’s
and S&P, (b) to any Lenders or participants or prospective Lenders or participants (other than Disqualified Lenders), (c) in any legal, judicial, administrative proceeding or other compulsory process or otherwise as required by
applicable law, rule or regulations (in which case we will promptly notify you, in advance, to the extent permitted by law, rule or regulation), (d) upon the request or demand of any governmental or regulatory authority having jurisdiction over
any Commitment Party or any of its affiliates or upon the good faith determination by counsel of any Commitment Party that such information should be disclosed in light of ongoing oversight or review by any governmental or regulatory authority
having jurisdiction over such Commitment Party or its affiliates (in which case such Commitment Party shall, except with respect to any audit or examination conducted by accountants or any governmental regulatory authority exercising examination or
regulatory authority, promptly notify you, in advance, to the extent lawfully permitted to do so), (e) to the officers, directors, employees, legal counsel, independent auditors, professionals and other experts or agents of us (collectively,
“Representatives”) on a reasonable “need-to-know” basis in connection with the Transactions and who are informed of the confidential nature of such information and are or have been advised of their obligation to
keep information of this type confidential, (f) to any of the Commitment Parties’ respective affiliates, or Representatives of such affiliates (provided that any such affiliate or Representative is advised of its obligation to
retain such information as confidential, and each Commitment Party shall be responsible for its affiliates’ and its affiliates’ Representatives’ compliance with this paragraph) solely in connection with the Transactions, (g) to
the extent any such information is or becomes publicly available other than by reason of disclosure by any Commitment Party, its affiliates or Representatives in breach of this Commitment Letter and (h) to establish a “due diligence”
defense, if applicable; provided that the disclosure of any such information to any Lenders or prospective Lenders or participants or prospective participants referred to above shall be made subject to the acknowledgment and acceptance by
such Lenders or prospective Lenders or participant or prospective participant that such information is being disseminated on a confidential basis (on substantially the terms set forth in this paragraph or as is otherwise reasonably acceptable to you
and us, including, without limitation, as agreed in any confidential information memorandum or other marketing materials) in accordance with our standard syndication processes or customary market standards for dissemination of such type of
information. Our obligations under this paragraph shall automatically terminate and be superseded by the confidentiality provisions in the Definitive Debt Documents upon the execution and delivery thereof and in any event shall terminate on the
first anniversary of the date hereof. 
 Notwithstanding anything herein to the contrary, you and we (and any of your and our respective
employees, representatives or other agents) may disclose to any and all persons, without limitation of any kind, the tax treatment and tax structure of the transactions contemplated by the Debt Financing Letters and all materials of any kind
(including opinions or other tax analyses) that are provided to you or us relating to such tax treatment and tax structure, except that (i) tax treatment and tax structure shall not include the identity of any existing or future party (or any
affiliate of such party) to any Debt Financing Letter, and (ii) neither you nor we shall disclose any information relating to such tax treatment and tax structure to the extent nondisclosure is reasonably necessary in order to comply with
applicable securities laws. For this purpose, the tax treatment of the transactions contemplated by the Debt Financing Letters is the purported or claimed U.S. federal income tax treatment of such transactions and the tax structure of such
transactions is any fact that may be relevant to understanding the purported or claimed U.S. federal income tax treatment of such transactions. 

10. Conflicts of Interest; Absence of Fiduciary Relationship. You acknowledge and agree that: 

(a) each Commitment Party and/or its affiliates and subsidiaries (each an “Arranger Group” and collectively the
“Arranger Groups”), in its and their respective capacities as principal or agent are involved in a wide range of commercial banking and investment banking activities globally (including investment advisory, asset management,
research, securities issuance, trading, and brokerage) 

  
 11 

 
from which conflicting interests or duties may arise and, therefore, conflicts may arise between (i) its and their interests and duties hereunder and (ii) the duties or interests or
other duties or interests of another member of such Commitment Party’s Arranger Group, 
 (b) each Commitment Party and any other
member of such Commitment Party’s Arranger Group may, at any time, (i) provide services to any other person, (ii) engage in any transaction (on its own account or otherwise) with respect to you or any member of the same group as you
or (iii) act in relation to any matter for any other person whose interests may be adverse to such Commitment Party or any member of its Arranger Group (a “Third Party”), and may retain for such Commitment Party’s
or any of its Arranger Group’s own benefit any related remuneration or profit, notwithstanding that a conflict of interest exists or may arise and/or any member of any such Arranger Group is in possession or has come or comes into possession
(whether before, during or after the consummation of the transactions contemplated hereunder) of information confidential to you; provided that such confidential information shall not used by any Commitment Party or any other member of its
Arranger Group in performing services or providing advice to any Third Party. You accept that permanent or ad hoc arrangements/information barriers may be used between and within each Commitment Party’s divisions or divisions of other
members of such Commitment Party’s Arranger Group for this purpose and that locating directors, officers or employees in separate workplaces is not necessary for such purpose, 

(c) information that is held elsewhere within any Commitment Party or its Arranger Group, but of which none of the individual directors,
officers, employees or other individuals having primary responsibility for the consummation of the transactions contemplated by this Commitment Letter actually has knowledge (or can properly obtain knowledge without breach of internal procedures),
shall not for any purpose be taken into account in determining our responsibilities to you hereunder, 
 (d) no Commitment Party and no
other member of its Arranger Group shall have any duty to disclose to you, or utilize for your benefit, any non-public information acquired in the course of providing services to any other person, engaging in any transaction (on such Commitment
Party’s or its Bank Group’s own account or otherwise) or otherwise carrying on its or their business, 
 (e) (i) no
Commitment Party nor any of our affiliates has assumed any advisory responsibility or any other obligation in favor of the Company or any of its affiliates except the obligations expressly provided for under the Debt Financing Letters and except as
agreed between you and any Commitment Party in a separate engagement letter, (ii) each Commitment Party and its affiliates, on the one hand, and the Company and its affiliates, on the other hand, have an arm’s-length business relationship
that does not directly or indirectly give rise to, nor does the Company or any of its affiliates rely on, any advisory, fiduciary or agency relationship or any fiduciary or other implied duty on the part of such Commitment Party or any of its
affiliates and (iii) each Commitment Party is (and is affiliated with) full service financial firms and as such may effect from time to time transactions for its own account or the account of customers, and hold long or short positions in debt,
equity-linked or equity securities or loans of companies that may be the subject of the transactions contemplated by this Commitment Letter (and, in particular, each Arranger and any other member of its Arranger Group may at any time hold debt or
equity securities for our or its own account in the Company). With respect to any securities and/or financial instruments so held by any Commitment Party, any of its affiliates or any of its respective customers, all rights in respect of such
securities and financial instruments, including any voting rights, will be exercised by the holder of such rights, in its sole discretion. You hereby waive and release, to the fullest extent permitted by law, any claims you have, or may have, with
respect to (i) any breach or alleged breach of fiduciary duty (and agree that the Commitment Parties shall have no liability (whether direct or indirect) to you in respect of such a fiduciary duty claim or to any person asserting a fiduciary
duty claim on behalf of or in right of you, including your stockholders, employees or creditors) or (ii) any conflict of interest arising from such transactions, activities, investments or holdings, or arising from any Commitment Party’s
failure or the failure of any of its affiliates to bring such transactions, activities, investments or holdings to your attention, and 

  
 12 

 (f) none of us nor any of our affiliates is advising you as to any legal, tax, investment,
accounting or regulatory matters in any jurisdiction. You shall consult with your own advisors concerning such matters and shall be responsible for making your own independent investigation and appraisal of the transactions contemplated by the Debt
Financing Letters, and none of us nor any of our affiliates shall have responsibility or liability to you with respect thereto. Any review by any of us, or on behalf of any of us, of the Company, the Transactions, the other transactions contemplated
by the Debt Financing Letters or other matters relating to such transactions will be performed solely for our benefit and shall not be on behalf of you or any of your affiliates. 

11. Choice of Law; Jurisdiction; Waivers. The Debt Financing Letters, and any claim, controversy or dispute arising under or related to
the Debt Financing Letters (whether in contract or tort), shall be governed by, and construed in accordance with, the laws of the State of New York without regard to conflict of law principles (other than sections
5-1401 and 5-1402 of the New York General Obligations Law), provided, however, that the interpretation of the definition of Target Material Adverse Effect” (and whether or not a Target Material Adverse
Effect has occurred), (b) the determination of the accuracy of any Specified Purchase Agreement Representations and whether as a result of any inaccuracy of any Specified Purchase Agreement Representations you have (or your applicable affiliate
has) the right to terminate your (or its) obligations under the Arrangement Agreement or decline to consummate the Acquisition as a result of a breach of such representations and warranties and (c) the determination of whether the Acquisition
is consummated in accordance with the terms of the Arrangement shall, in each case, be governed by, and construed and interpreted in accordance with the laws of the Province of Ontario without giving effect to any choice or conflict of laws
provision or rule (whether the Province of Ontario or any other jurisdiction) that would cause the application of the laws of any jurisdiction other than the laws of the Province of Ontario. To the fullest extent permitted by applicable law, each of
the parties hereto hereby irrevocably submit to the exclusive jurisdiction of any New York State court or federal court sitting in the County of New York in respect of any claim, suit, action or proceeding arising out of or relating to the
provisions of any Debt Financing Letter and irrevocably agree that all claims in respect of any such claim, suit, action or proceeding may be heard and determined in any such court and that service of process therein may be made by certified mail,
postage prepaid, to the respective addresses set forth above and further agree that suit for the recognition or enforcement of any judgment obtained in any such New York State or federal court may be brought in any other court of competent
jurisdiction. You and we hereby waive, to the fullest extent permitted by applicable law, any objection that you or any of us may now or hereafter have to the laying of venue of any such claim, suit, action or proceeding brought in any such court,
and any claim that any such claim, suit, action or proceeding brought in any such court has been brought in an inconvenient forum. You and we hereby waive, to the fullest extent permitted by applicable law, any right to trial by jury with respect to
any claim, suit, action or proceeding (whether based upon contract, tort or otherwise) arising out of or relating to the Debt Financing Letters, any of the Transactions or any of the other transactions contemplated hereby or thereby. The provisions
of this Section 11 are intended to be effective upon the execution of this Commitment Letter without any further action by you or any of us, and the introduction of a true copy of this Commitment Letter into evidence shall be conclusive
and final evidence as to such matters. 
 12. Miscellaneous. 

(a) This Commitment Letter may be executed in one or more counterparts, each of which will be deemed an original, but all of which taken
together will constitute one and the same instrument. Delivery of an executed signature page of this Commitment Letter by facsimile, PDF or other electronic transmission will be effective as delivery of a manually executed counterpart hereof. 

(b) You may not assign any of your rights, or be relieved of any of your obligations, under this Commitment Letter without the prior written
consent of each Commitment Party, which may be given or withheld in its sole discretion (and any purported assignment without such consent, at our sole option, shall be null and void). Each of us may at any time and from time to time assign all or
any portion 

  
 13 

 
of our respective Commitments hereunder to one or more of our affiliates or to one or more Lenders (other than Disqualified Lenders), whereupon we shall be released from the portion of such
Commitments hereunder so assigned; provided that such assignment shall not relieve us of our obligation to fund on the Closing Date the portion of such Commitments so assigned to the extent such assignee fails, upon satisfaction or waiver by
us of all conditions to the making of the initial extensions of credit on the Closing Date in accordance with the terms of this Commitment Letter, to fund such assigned Commitments on the Closing Date. Any and all obligations of, and services to be
provided by, each of us hereunder (including the Commitments) may be performed, and any and all of our rights hereunder may be exercised, by or through any of our affiliates or branches and we reserve the right to allocate, in whole or in part, to
our affiliates or branches certain fees payable to us in such manner as we and our affiliates may agree in our and their sole discretion. You further acknowledge, subject to Section 9, that we may share with any of our affiliates, and
such affiliates may share with us, any information relating to the Transactions, you or the Acquired Business (and your and their respective affiliates), or any of the matters contemplated in the Debt Financing Letters. 

(c) This Commitment Letter has been and is made solely for the benefit of you, each of us and the Indemnified Persons and your, each of our
and their respective successors and assigns, and nothing in this Commitment Letter, expressed or implied, is intended to confer or does confer on any other person or entity any rights or remedies under or by reason of this Commitment Letter or your
and each of our agreements contained herein. 
 (d) The Debt Financing Letters set forth the entire understanding of the parties hereto as
to the scope of the Commitments and our obligations hereunder and thereunder. The Debt Financing Letters supersede all prior understandings and proposals, whether written or oral, between any of us and you relating to any financing or the
transactions contemplated hereby and thereby. 
 (e) You acknowledge that each of us and our affiliates may be arranging or providing (or
contemplating arranging or providing) a committed form of acquisition financing or other services (including financial advisory services) to other potential purchasers of the Acquired Business and that, in such capacities, we and our affiliates may
acquire information about the Acquired Business, the Acquisition, and such other potential purchasers and their strategies and proposals, but that nonetheless neither we nor our affiliates shall have any obligation to disclose to you or your
affiliates the substance of such information or the fact that we or our affiliates are in possession thereof. 
 (f) You further acknowledge
that one or more of us or our affiliates has been retained as a sell-side financial advisor to the Target (in such capacity, the “Financial Advisor”) in connection with the Transactions. You agree to any such retention, and not to
assert any claim you might allege based on any actual or potential conflicts of interest that might be asserted to arise or result from, on the one hand, (i) the engagement of the Financial Advisor or (ii) us or the Financial Advisor or
any of our or its affiliates arranging or providing (or contemplating arranging or providing) financing for a competing bidder and, on the other hand, our relationship with you as described and referred to herein. You acknowledge that, in its
capacity as such, (A) the Financial Advisor may recommend to the Target that the Target not pursue or accept your offer or proposal to acquire the Acquired Business, (B) the Financial Advisor may advise the Target and the Acquired Business
in other manners adverse to your interests, including by providing advice on pricing, leverage levels, and timing and conditions of closing with respect to your bid, taking other actions with respect to your bid and taking action under any
definitive agreement between you, the Target and/or the Acquired Business, and (C) the Financial Advisor may possess information about the Target, the Acquired Business, the Acquisition and other potential purchasers and their respective
strategies and proposals, but that nonetheless the Financial Advisor shall have no obligation to disclose to you the substance of such information or the fact that it is in possession thereof. 

  
 14 

 (g) You agree that each of us or any of our affiliates may disclose information about the
Transactions to market data collectors and similar service providers to the financing community. 
 (h) We hereby notify you and, upon its
becoming bound by the provisions hereof, each other Credit Party, that pursuant to the requirements of the USA PATRIOT Act, Pub. L. 107-56 (signed into law October 26, 2001) (as amended or reauthorized from time to time, the “Patriot
Act”), and other anti-money laundering rules and regulations, each of the Commitment Parties and each Lender may be required to obtain, verify and record information that identifies the Credit Parties, which information includes the
name, address, tax identification number and other information regarding the Credit Parties that will allow such Commitment Party or such Lender to identify the Credit Parties in accordance with the Patriot Act or other such legislation. This notice
is given in accordance with the requirements of the Patriot Act and is effective as to each Commitment Party and each Lender. You agree that we shall be permitted to share any or all such information with the Lenders. 

13. Amendment; Waiver. This Commitment Letter may not be modified or amended except in a writing duly executed by the parties hereto.
No waiver by any party of any breach of, or any provision of, this Commitment Letter shall be deemed a waiver of any similar or any other breach or provision of this Commitment Letter at the same or any prior or subsequent time. To be effective, a
waiver must be set forth in writing signed by the waiving party and must specifically refer to this Commitment Letter and the breach or provision being waived. 

14. Surviving Provisions. Notwithstanding anything to the contrary in this Commitment Letter, except as set forth in the immediately
succeeding sentence: (i) Sections 2, 4, and 6 to and including 15 hereof shall survive the expiration or termination of this Commitment Letter, regardless of whether the Definitive Debt Documents have been executed
and delivered or the Transactions consummated, and (ii) Sections 4 and 6 to and including 13 hereof shall survive execution and delivery of the Definitive Debt Documents and the consummation of the Transactions. Upon
execution and delivery of the Definitive Debt Documents, except as otherwise provided in the immediately preceding sentence, the provisions of this Commitment Letter shall be superseded in their entirety by those set forth in the Definitive Debt
Documents. 
 15. Acceptance, Expiration and Termination. Please indicate your acceptance of the terms of the Debt Financing Letters
by returning to each of us executed counterparts of the Debt Financing Letters not later than 11:59 p.m., New York City time, on November 11, 2013 (the “Deadline”). The Debt Financing Letters are conditioned
upon your contemporaneous execution and delivery to each of us, and the contemporaneous receipt by each of us, of executed counterparts of each Debt Financing Letter on or prior to the Deadline. This Commitment Letter will expire at such time in the
event that you have not returned such executed counterparts to us by such time. Thereafter, except with respect to any provision that expressly survives pursuant to Section 14, this Commitment Letter (but not the Fee Letter) will
terminate automatically on the earliest of (i) the date of termination or abandonment of the Arrangement Agreement, (ii) the closing of the Acquisition, (iii) the acceptance by the Target or any of its affiliates (or any of their
respective equityholders) of an offer for all or any substantial part of the capital stock or property and assets of the Acquired Business (or any parent company thereof) other than as part of the Transactions, and (iv) 5:00 p.m.,
New York City time, on March 14, 2014. 
 Each of the parties hereto agrees that this Commitment Letter constitutes a legal, valid
and binding obligation, enforceable against such parties in accordance with its terms (subject to the effects of bankruptcy, insolvency, fraudulent conveyance, reorganization and other similar laws relating to or affecting creditors’ rights
generally and general principles of equity (whether considered in a proceeding in equity or law) with respect to the subject matter herein and therein (including an obligation to negotiate in good faith)), it being acknowledged and agreed that
(a) the funding of the Facilities is subject to the conditions specified herein, including the execution and delivery of the definitive documentation for the Facilities by the Borrowers and (b) the commitment provided hereunder is subject
only to those conditions set forth in Section 3 of this Commitment Letter and in Exhibit B and Exhibit C to this Commitment Letter. 

  
 15 

 [Remainder of page intentionally blank] 

  
 16 

 We are pleased to have the opportunity to work with you in connection with this important
financing. 
  

			
	Very truly yours,
	
	JEFFERIES FINANCE LLC
		
	By:	 	 /s/ Brian Buoye

		 	Name: Brian Buoye
		 	Title:   Managing Director

  
 [Mitel Networks
Corporation - Commitment Letter] 

 
			
	THE TORONTO-DOMINION BANK
		
	By:	 	 /s/ Ryan Davis

		 	Name: Ryan Davis
		 	Title:   Vice President

  

			
		
	By:	 	 /s/ Matt Hendel

		 	Name: Matt Hendel
		 	Title:   Managing Director

  

			
	TD SECURITIES (USA) LLC
		
	By:	 	 /s/ William Balassone

		 	Name: William Balassone
		 	Title:   Managing Director

  
 [Mitel Networks
Corporation - Commitment Letter] 

			
	Accepted and agreed to as of the date first above written:
	
	MITEL NETWORKS CORPORATION
		
	By:	 	 /s/ Steve Spooner

		 	Name: Steve Spooner
		 	Title:   Chief Financial Officer

  
 [Mitel Networks
Corporation - Commitment Letter] 

 EXHIBIT A TO COMMITMENT LETTER 

SUMMARY OF TERMS OF $405.0 MILLION FACILITIES 

Set forth below is a summary of the principal terms of the Term Loan Facility and Revolving Credit Facility and the documentation related
thereto. Capitalized terms used and not otherwise defined in this Exhibit A have the meanings set forth elsewhere in this Commitment Letter. 
  

					
			
	I.	 	Parties	  	
			
		 	Borrowers	  	Mitel Networks Corporation (“Mitel”), in its capacity as a borrower under the below-defined Revolving Credit Facility, and Mitel US Holdings, Inc. (“MUSHI”), in its capacity as a
borrower under the below-defined Term Loan Facility and under the Revolving Credit Facility (each a “Borrower” and collectively, the “Borrowers”).
			
		 	Guarantors	  	Each Borrower and each of Mitel’s existing or subsequently acquired direct and indirect wholly-owned subsidiaries (other than (a) immaterial subsidiaries (to be defined in a mutually acceptable manner as to individual and
aggregate revenues or assets excluded consistent with the Documentation Principles), (b) any subsidiary that is prohibited by applicable law, rule or regulation existing on the Closing Date or by applicable law, rule or regulation or by any
contractual obligation existing at the time of acquisition thereof after the Closing Date (to the extent such contractual obligation was not created in contemplation of such acquisition) for so long as such prohibition exists, in each case from
guaranteeing the Facilities, or (c) any subsidiary to the extent such subsidiary providing a guarantee may result in an adverse tax consequence to the Borrowers or any of their subsidiaries (including as a result of the operation of Section 956 of
the U.S. Internal Revenue Code (the “Code”) or any similar law or regulation in any applicable jurisdiction) as reasonably determined by the Borrowers) (collectively, the “Guarantors;” the
Borrowers and the Guarantors, collectively, the “Credit Parties”).
			
		 	Joint Lead Arrangers and Joint Bookrunners	  	Jefferies Finance LLC (“Jefferies Finance”) and TD Securities (USA) LLC (“TD Securities”) and/or one or more of their respective designees approved by the Borrowers (in such
capacities, each an “Arranger” and, together, the “Arrangers”). The Arrangers will perform the duties customarily associated with such role.
			
		 	Administrative Agent	  	Jefferies Finance and/or one or more of its designees approved by the Borrowers (in such capacity, the “Administrative Agent”). The Administrative Agent will perform the duties customarily associated with
such role.

  
 Exhibit A-1 

					
		 	Collateral Agent	  	Jefferies Finance and/or one or more of its designees approved by the Borrowers (in such capacity, the “Collateral Agent”). The Collateral Agent will perform the duties customarily associated with such
role.
			
		 	Lenders	  	A syndicate of banks, financial institutions and other entities (including Jefferies Finance and Toronto-Dominion) (collectively, the “Lenders”) identified by the Arrangers in consultation with the Borrowers
and, with respect to the Revolving Credit Facility only, subject to the Borrowers’ consent (such consent not to be unreasonably withheld, delayed or conditioned); it being understood and agreed that the Arrangers will not syndicate to
Disqualified Lenders.
			
		 	Closing Date	  	The date, on or before the date on which the Commitments are terminated in accordance with Section 15 of the Commitment Letter, on which the Acquisition is consummated and the initial funding of the Facilities has
occurred (the “Closing Date”).
			
		 	Loan Documents	  	The definitive documentation governing or evidencing the Facilities (collectively, the “Loan Documents”). 
			
	II.	 	Types and Amounts of Facilities	  	
			
		 	Term Loan Facility	  	A senior secured first lien term loan facility in an aggregate principal amount equal to $355.0 million (the “Term Loan Facility”) (the loans thereunder, the “Term Loans”).
			
		 		  	The full amount of the Term Loan Facility (other than any Incremental Term Loans) shall be drawn by MUSHI in a single drawing on the Closing Date. Amounts borrowed under the Term Loan Facility that are repaid or prepaid may not be
reborrowed.
			
		 	Final Maturity and Amortization of Term Loan Facility	  	The Term Loan Facility will mature on the date that is 6 years after the Closing Date and will amortize at an annual rate of 1.0% in equal quarterly installments of 0.25% of the original principal amount of the Term Loan Facility,
with the balance payable on the sixth anniversary of the Closing Date. The first installment shall be due and payable on the last day of the first full fiscal quarter following the Closing Date. Notwithstanding any of the foregoing, the Loan
Documents shall provide the right for individual Lenders under the Term Loan Facility to agree to extend the maturity date of the outstanding Term Loans upon the request of the Borrowers and without the consent of any

  
 Exhibit A-2 

					
		 		  	 other Lender pursuant to customary procedures to be agreed (any such loans that have been so extended, the “Extended Term
Loans”); it being understood that each Lender under the applicable tranche or tranches that are being extended shall have the opportunity to participate in such extension on the same terms and conditions as each other Lender in such
tranche or tranches; provided, that it is understood that no existing Lender will have any obligation to commit to any such extension. The terms of the Extended Term Loans shall be substantially similar to the Term Loans except for interest
rates, fees, amortization (so long as, prior to the final stated maturity of the Term Loans, the amortization of such Extended Term Loans does not exceed equal quarterly installments in an aggregate annual amount equal to 1% of the original
principal amount of the Extended Term Loans), final maturity date, provisions requiring optional and mandatory prepayments to be directed first to the non-extended Term Loans prior to being applied to Extended Term Loans and certain other provisions
to be agreed, provided that the Extended Term Loans shall not benefit from Guarantees or Collateral that do not also benefit the existing Term Loans, and further provided that other terms of the Extended Term Loans may differ from the
Term Loans to the extent such differences do not apply until after the final stated maturity of the Term Loans.
  

The Administrative Agent and Borrowers shall be permitted to effect such amendments to the Loan Documents as may be necessary or appropriate to give effect to
the foregoing, including conforming amendments (which may be in the form of an amendment and restatement), without the consent of each Lender, other than the Lenders agreeing to extend such Extended Term Loans.

			
		 	Incremental Credit Facilities	  	 The Borrowers shall have the right to increase the size of the Term Loan Facility and/or the Revolving Credit Facility (x) with respect to
the Term Loan Facility, “Incremental Term Loan Commitments” and such new loans, “Incremental Term Loans” and (y) respect to the Revolving Credit Facility, “Incremental Revolving
Commitments” and such new loans, “Incremental Revolving Credit Loans”; each of the Incremental Term Loans and Incremental Revolving Credit Commitments may hereinafter be referred to as the “Incremental
Facility”), at any time after the Closing Date from willing Lenders and/or eligible assignees up to an aggregate total principal amount not to exceed $75.0 million in the aggregate, subject to the following:

 
 (i) not more than two increases in the size of the Term Loan Facility and/or the
Revolving Credit Facility shall occur,

  
 Exhibit A-3 

					
		 		  	 (ii) no default or event of default has occurred and is continuing, or would immediately occur after giving effect to, such Incremental
Term Loan Commitments, Incremental Revolving Commitments and the proposed Incremental Term Loans and Incremental Revolving Credit Loans, as applicable,
  

(iii) the Borrowers shall have certified to the Administrative Agent that the full amount of the respective Incremental Term Loans or Incremental
Revolving Credit Loans may be incurred without violating the terms of the Facilities,
  

(iv) the Incremental Term Loans shall have a maturity no earlier than the Term Loan Facility and shall have a weighted average life to maturity no shorter
than the Term Loan Facility,
  
 (v) the initial yield (to be defined to include all
applicable margin, interest rate floors, upfront fees, original issue discount or similar yield-related discounts, deductions or payments, but excluding any customary arrangement or similar fees in connection therewith that are not paid to all of
the Lenders providing the Incremental Term Loans or the Incremental Revolving Credit Loans, as applicable) of the Incremental Term Loans or the Incremental Revolving Credit Loans, as applicable, shall be no greater than 0.50% per annum
higher than the corresponding all-in yield applicable to the existing Term Loan Facility or the Revolving Credit Facility, as applicable (or, if such initial yield on the Incremental Term Loans or Incremental Revolving Credit Loans, as applicable,
exceeds the all-in yield on the existing Term Loan Facility or the Revolving Credit Facility, as applicable, then the interest rate margin for the existing Term Loan Facility or the Revolving Credit Facility, as applicable, shall automatically be
increased to equal such initial yield on the Incremental Term Loans or the Incremental Revolving Credit Loans, as applicable, less 0.50%),
  

(vi) the Borrowers shall be in pro forma compliance with (x) the financial maintenance covenant and (y) a ratio equal to the Closing Date Net Leverage
Ratio (as defined below), in each case, on the date of incurrence and for the most recently-ended determination period after giving effect to such Incremental Term Loan Commitments and the proposed Incremental Term Loans and other customary and
appropriate adjustment events,

  
 Exhibit A-4 

					
		 		  	 including certain acquisitions or dispositions after the beginning of the relevant determination period but prior to or simultaneous with the
borrowing of such Incremental Term Loans (assuming, for purposes of pro forma compliance under preceding clause (x) with the maximum consolidated total net leverage ratio, that the maximum consolidated total net leverage ratio permitted at
such time was 0.25 to 1.00 below the ratio actually required to be maintained at such time),
  

(vii) the representations and warranties shall be true and correct in all material respects (without duplication of any materiality qualifiers set forth
therein) immediately prior to, and immediately after giving effect to, the incurrence of such Incremental Term Loans or Incremental Revolving Commitments or Incremental Revolving Credit Loans (although any representations and warranties which
expressly relate to a given date or period shall be required to be true and correct in all material respects (without duplication of any materiality qualifiers set forth therein) as of the respective date or for the respective period, as the case
may be),
  
 (viii) the terms of the Incremental Term Loan Commitments shall be otherwise
reasonably satisfactory in all respects to the Administrative Agent to the extent that such terms, except to the extent set forth above, are not consistent with the Term Loan Facility, and

 
 (ix) any Incremental Revolving Commitment will be documented solely as an increase to the
commitments with respect to the Revolving Credit Facility, without any change in terms except as set forth above.
  

None of the existing Lenders under the Facilities will be required to provide any Incremental Term Loan Commitments or Incremental Revolving Commitments, and
any decision whether or not to do so by any such Lender shall be made at the sole discretion of such Lender.
  

For purposes of this Commitment Letter, unless the context otherwise requires, Incremental Term Loans shall constitute “Term Loans” and shall be
subject to the provisions of this Commitment Letter (including mandatory prepayment requirements) to the same extent as Term Loans.
  

“Closing Date Net Leverage Ratio” shall mean the ratio on the Closing Date of (i) indebtedness of any of the Borrowers and their
subsidiaries on a consolidated basis, net of unrestricted cash and cash equivalents of the

  
 Exhibit A-5 

					
		 		  	Credit Parties in an aggregate amount not to exceed $50.0 million, to (ii) Consolidated EBITDA (to be defined in a manner consistent with the Documentation Principles) of the Borrowers and their subsidiaries for the most recently
ended four-fiscal quarter period for which financial statements have been delivered.
			
		 	Revolving Credit Facility	  	 A senior secured first lien revolving credit facility (the “Revolving Credit Facility” and, together with the Term
Loan Facility, the “Facilities”) in an aggregate principal amount equal to $50.0 million, the “Revolving Credit Loans” and, together with the Term Loans, the “Loans”). Amounts
repaid under the Revolving Credit Facility may be reborrowed.
  
 Borrowings, Letters of
Credit, Swing Line Loans and banker’s acceptances under the Revolving Credit Facility will be available to Mitel in Canadian Dollars. Borrowings, Letters of Credit and Swing Line Loans under the Revolving Credit Facility will be available to
MUSHI in U.S. Dollars.

			
		 	Maturity of Revolving Credit Facility	  	The Revolving Credit Facility shall be available to either Borrower on a revolving basis during the period commencing on the Closing Date (subject to the limitations set forth under the caption “Use of Proceeds” set forth
below) and ending on the fifth anniversary of the Closing Date (the “Revolving Credit Termination Date”).
			
		 	Letters of Credit	  	A portion of the Revolving Credit Facility not in excess of an amount to be mutually agreed shall be available for the issuance of standby letters of credit (the “Letters of Credit”) by one or more Lenders or
affiliates of Lenders to be determined (each such Lender in such capacity, an “Issuing Lender”), which Letters of Credit shall be risk participated to all Lenders with commitments under the Revolving Credit Facility, to
support obligations of the Borrowers and their wholly owned subsidiaries reasonably satisfactory to the Issuing Lender. The face amount of any outstanding Letters of Credit will reduce availability under the Revolving Credit Facility on a
dollar-for-dollar basis. No Letter of Credit shall have an expiration date after the earlier of (i) one year after the date of issuance and (ii) five business days prior to the Revolving Credit Termination Date; provided that any Letter of
Credit with a one-year tenor may provide for the automatic renewal thereof for additional one-year periods (which shall in no event extend beyond the date referred to in clause (ii)
above).

  
 Exhibit A-6 

					
			
		 		  	 Drawings under any Letter of Credit shall be reimbursed by the Borrowers (whether with any Borrower’s own funds or with the proceeds of
Revolving Credit Loans) on the immediately succeeding business day. To the extent that the Borrowers do not so reimburse the Issuing Lender, the Lenders under the Revolving Credit Facility shall be irrevocably and unconditionally obligated to
reimburse the Issuing Lender on a pro rata basis based on their respective Revolving Credit Facility commitments.
  

A portion of the Revolving Credit Facility not in excess of an amount, and on terms and conditions, to be mutually agreed shall be available for Canadian
banker’s acceptances.

			
		 	Swing Line Loans	  	A portion of the Revolving Credit Facility not in excess of an amount to be mutually agreed shall be available on same-day notice for swing line loans (the “Swing Line Loans”) from a Lender to be selected by
the Administrative Agent in consultation with the Borrowers (in such capacity, the “Swing Line Lender”). Any such Swing Line Loans will reduce availability under the Revolving Credit Facility on a dollar-for-dollar basis.
Each Lender under the Revolving Credit Facility shall acquire, under certain circumstances, an irrevocable and unconditional pro rata participation in each Swing Line Loan.
			
		 	Currency Matters	  	 Loan fundings and payments in respect of non-U.S. dollar loans will be made in Canadian Dollars. All unreimbursed Letter of Credit draws to
be funded by the Lenders will be immediately due and payable in the same currency in which such draws were made.
  

In the case of loans, Letters of Credit and banker’s acceptances denominated in Canadian Dollars, the Administrative Agent will at periodic intervals, and
may, at its discretion, at other times, recalculate the aggregate exposure under such loans, Letters of Credit and banker’s acceptances denominated in Canadian Dollars and outstanding under the Revolving Credit Facility at any time to account
for fluctuations in exchange rates affecting the Canadian Dollar. All calculations by the Administrative Agent of foreign currency equivalents will be based on its spot foreign exchange rates. If, as a result of any such recalculation, the aggregate
exposure in respect of obligations outstanding under the Revolving Credit Facility exceeds an amount equal to 102% of aggregate Revolving Credit Facility commitments, the Borrowers will prepay loans and other obligations and, if applicable, cash
collateralize Letters of Credit in the amount necessary to eliminate such excess.

  
 Exhibit A-7 

					
			
		 	Use of Proceeds	  	 The proceeds of the Term Loans borrowed on the Closing Date will be used directly or indirectly to finance, in part, purchase of the Shares
pursuant to the Arrangement, the Refinancing and the cash-out of outstanding stock appreciation rights and deferred share units issued by the Target, and to pay fees and expenses in connection with the foregoing.

 
 The proceeds of the Revolving Credit Loans will be used (i) on the Closing Date up to an
amount to be mutually agreed to finance, in part, the Acquisition and to pay upfront fees (or original issue discount) and expenses in connection with the Facilities (ii) after the Closing Date for the working capital and general corporate purposes
of the Borrowers and their subsidiaries (including permitted acquisitions, capital expenditures and permitted distributions).
  

The proceeds of any Incremental Facility will be used by the Borrowers for general corporate purposes of Borrowers and their subsidiaries (including, without
limitation, permitted acquisitions, capital expenditures and permitted distributions).
  

Letters of Credit will be used to support payment and performance obligations incurred in the ordinary course of business by the Borrowers and their
subsidiaries.

			
	III.	 	Certain Payment Provisions	  	
			
		 	Fees and Interest Rates	  	As set forth on Annex A-I hereto.
			
		 	Optional Prepayments and Commitment Reductions	  	Optional prepayments of borrowings under the Facilities and optional reductions of the unutilized portion of the commitments under the Facilities will be permitted at any time, in minimum principal amounts to be agreed upon, without
premium or penalty (subject to (i) reimbursement of the Lenders’ redeployment costs in the case of a prepayment of Adjusted LIBOR Loans other than on the last day of the relevant interest period and (ii) payments of an amount provided below
under the caption “Call Protection on Term Loans”). Voluntary prepayments of the Term Loan Facility shall be applied to remaining scheduled amortization payments as directed by the
Borrowers.

  
 Exhibit A-8 

							
			
		 	Mandatory Prepayments and Commitment Reductions	 	The following amounts will be applied to prepay the Term Loans or, if all Term Loans have then been repaid, to prepay Revolving Credit Loans (or, if none, to cash collateralize Letters of Credit thereunder), without a
reduction of the commitments thereunder, in each case consistent with the Documentation Principles:
				
		 		 	 •
	  	100% of the net cash proceeds of any incurrence of indebtedness after the Closing Date (other than indebtedness permitted under the Loan Documents and excluding for certainty any Incremental Facilities) by any Borrower or any of
their subsidiaries (with additional exceptions to be agreed upon); and
				
		 		 	 •
	  	100% of the net cash proceeds in excess of a threshold to be mutually and reasonably agreed of any non-ordinary course sale or other disposition of assets by any Borrower or any of their subsidiaries (excluding sales of inventory
in the ordinary course and including (i) as a result of casualty or condemnation and (ii) any sale of the equity interests in any Credit Party (other than Mitel) or subsidiary of a Credit Party to a non-credit party) (subject to customary exceptions
and reinvestment rights, and such other exceptions consistent with the Documentation Principles); and
				
		 		 	 •
	  	50% of “excess cash flow” (to be defined in a manner consistent with the Documentation Principles, and in any event, giving dollar-for-dollar credit for voluntary prepayments to the Term Loan Facility and the Revolving
Credit Facility, to the extent such prepayments of the Revolving Credit Facility are accompanied by a permanent and concurrent commitment reduction thereunder) for each fiscal year of the Borrowers (commencing with the fiscal year ending December
31, 2014), with step-downs to be agreed upon based on compliance with a consolidated total net leverage ratio to be agreed.
			
		 		 	All such mandatory prepayments shall be applied without premium or penalty (except for customary breakage costs, if any) and shall be applied in the following order: first, to the next four scheduled unpaid
installments of principal of the Term Loan Facility in direct order of maturity and thereafter pro rata to the remaining scheduled installments of principal of the Term Loan Facility and second, to the Revolving Credit Facility
(including to cash collateralize Letters of Credit) (without a reduction of the commitments thereunder). 

  
 Exhibit A-9 

					
			
		 		  	The Revolving Credit Loans will be prepaid and the Letters of Credit will be cash collateralized to the extent such extensions of credit at any time exceed an amount equal to 102% of aggregate commitments in respect of the Revolving
Credit Facility.
			
		 	Call Protection on Term Loans	  	 The Borrowers shall pay a “prepayment premium” in connection with any Repricing Event (as defined below) with respect to all or any
portion of the Term Loans that occurs on or before the date occurring six months after the Closing Date (the “Soft Call Date”), in an amount not to exceed 1.0% of the principal amount of the Term Loans subject to such
Repricing Event. The term “Repricing Event” shall mean (i) any prepayment or repayment of Term Loans with the proceeds of, or any conversion of Term Loans into, any new or replacement tranche of term loans bearing interest at
an “effective” interest rate less than the “effective” interest rate applicable to the Term Loans (as such comparative rates are determined by the Administrative Agent in consultation with the Borrowers), and (ii) any amendment
to the Term Loan Facility that, directly or indirectly, reduces the “effective” interest rate applicable to the Term Loans (in each case, with original issue discount and upfront fees, which shall be deemed to constitute like amounts of
original issue discount, being equated to interest margins in a manner consistent with generally accepted financial practice based on an assumed four-year life to maturity), including any mandatory assignment in connection therewith with respect to
each Lender that refuses to consent to such amendment. Notwithstanding anything in this paragraph to the contrary, in no event will any prepayment premium be payable pursuant to this paragraph in connection with the occurrence of a Change of Control
(to be defined).
  
 After the Soft Call Date, the Facilities may be prepaid in whole or
in part at any time without premium or penalty (other than customary breakage costs).

			
	IV.	 	Collateral and Guarantees	  	
			
		 	Collateral	  	Subject to the limitations set forth below in this section, subject to the Certain Funds Provision, and subject to the Documentation Principles, the obligations of each Credit Party in respect of the Facilities, any interest rate
hedging obligations of the Borrowers owed to a Lender, the Administrative Agent, an Arranger or their respective affiliates or to an entity that was a Lender, the

  
 Exhibit A-10 

					
		 		  	 Administrative Agent, an Arranger or their respective affiliates at the time of such transaction (“Permitted Secured Hedging
Obligations”), and any treasury management obligations of the Borrowers owed to a Lender, the Administrative Agent, an Arranger or their respective affiliates or to an entity that was a Lender, the Administrative Agent, an Arranger or
their respective affiliates at the time of such transaction (“Permitted Cash Management Obligations”) will be secured by the following: a perfected first priority security interest (subject to permitted priority liens and
other mutually agreed exceptions consistent with the Documentation Principles) in substantially all of its tangible and intangible assets, including intellectual property, real property, licenses, permits, intercompany indebtedness (which shall be
evidenced by a subordinated promissory note), and all of the capital stock of each Credit Party (excluding Mitel) and each U.S. and foreign subsidiary directly owned by each Credit Party (but limited to 65% of the voting stock of each first-tier
foreign subsidiary of a U.S. Credit Party to the extent that the pledge of a greater percentage may result in adverse tax consequences to the Borrowers or any of their subsidiaries) (the items described above, but excluding the Excluded Assets (as
defined below), collectively, the “Collateral”), except that the Credit Parties shall not be obligated to provide a security interest or perfect the Collateral Agent’s security interests in those assets as to which the
Collateral Agent reasonably determines in consultation with the Borrowers that the costs of obtaining a security interest are excessive in relation to the value of the security afforded thereby.

 
 Notwithstanding anything to the contrary, the Collateral shall exclude the following: (i)
any fee-owned real property with a value of less than an amount to be agreed and any leasehold interests; (ii) motor vehicles and other assets subject to certificates of title, letter of credit rights (except to the extent perfection can be obtained
by filing of financing statements) and commercial tort claims with a value of less than an amount to be agreed; (iii) any lease, license or other similar agreement or any property subject to a purchase money security interest or similar arrangement
to the extent that a grant of a security interest therein would violate or invalidate such lease, license or similar agreement or purchase money arrangement or create a right of termination in favor of any other party thereto (other than a Borrower
or a Guarantor) after giving effect to the applicable anti-assignment provisions of applicable law, other than proceeds and receivables thereof, the assignment of which is expressly deemed effective under
applicable

  
 Exhibit A-11 

					
		 		  	 law notwithstanding such prohibition; (iv) any intent to use trademark applications; (v) letter of credit rights and commercial tort claims
with a value below an amount to be agreed; (vi) any governmental licenses or state or local franchises, charters and authorizations, to the extent security interests in such licenses, franchises, charters or authorizations are prohibited or
restricted thereby; (vii) any assets of any “controlled foreign corporation” within the meaning of Section 957 of the Code to the extent it would result in adverse tax consequences; (viii) purchased leases (that have not been repurchased)
and collateral relating to such purchased leases; and (ix) subject to, and consistent with, the Documentation Principles, any other assets that are excluded under the terms of the security in place in respect of the Existing Credit Agreement (the
foregoing described in clauses (i) through (ix) are collectively, the “Excluded Assets”).
  

All the above-described pledges, security interests and mortgages shall be created on terms to be set forth in the Loan Documents; and none of the Collateral
shall be subject to other pledges, security interests or mortgages (subject to customary exceptions for financings of this kind to be agreed).

			
		 	Guarantees	  	The Guarantors will unconditionally, and jointly and severally, guarantee the obligations of each Credit Party in respect of the Facilities and, to the extent requested by the Arrangers, the Permitted Secured Hedging Obligations and
the Permitted Cash Management Obligations (the “Guarantees”). Such Guarantees will be in form consistent with the Documentation Principles. All Guarantees shall be guarantees of payment and performance, and not of collection.
Notwithstanding anything contained herein to the contrary, no Credit Party shall be jointly and severally liable or guarantee any Permitted Secured Hedging Obligations if, and to the extent that such liability or such guaranty of such swap
obligation is or becomes illegal under the Commodity Exchange Act (determined after giving effect to any keepwell or other support for the benefit of such Credit Party).
			
	V.	 	Other Provisions	  	
			
		 	Documentation Principles	  	The Loan Documents (a) shall be consistent with the Commitment Letter and the Fee Letter, will contain only those conditions to borrowing, mandatory prepayments, representations, warranties, covenants and events of default referred
to in Section 1 of the Commitment Letter (subject to modification in accordance with the “market flex” provisions of the Fee Letter) and consistent with

  
 Exhibit A-12 

					
		 		  	credit agreement terms customary and usual for facilities and transactions of this type (but in no event shall include any modifications to the conditions to borrowing), and (b) shall be negotiated in good faith by the Borrowers and
the Arrangers giving due regard to (i) the terms set forth that certain First Lien Credit Agreement dated as of February 27, 2013 (the “Existing Credit Agreement”) by and among the Borrowers, the lenders party thereto,
Bank of America, N.A., as administrative and collateral agent, and others, as amended, and the other loan documents entered into in connection therewith, (ii) the business of the Borrowers and their subsidiaries, (iii) the operational and strategic
requirements of the Borrowers and their subsidiaries in light of their size, industries, businesses and business practices, and the Projections delivered to the Arrangers prior to the date of the Commitment Letter, (iv) the general trends and risks
affecting the industry of the Borrowers and their subsidiaries, and (v) the prevailing market conditions at the time of syndication of the Facilities; it being further understood and agreed that the provisions contained in the Existing Credit
Agreement shall not limit the ability of the Administrative Agent to include operational and other agency provisions reasonably required by it in such capacity consistent with other financing transactions of this type. This paragraph and the
provisions herein are referred to as the “Documentation Principles”.
			
		 	Representations and Warranties	  	Limited to the following (to be applicable to the Borrowers and their subsidiaries only): organization, status and powers; due authorization, execution, delivery and enforceability of Loan Documents; no conflicts; financial
statements, projections and other information; no material adverse effect; ownership of properties; intellectual property; equity interests and subsidiaries; litigation and compliance with laws (including laws regulating each Borrower’s
business and industry and other regulatory matters) and governmental approvals; organizational documents; enforceability and non-violation of material contractual obligations; federal reserve regulations; the Patriot Act and Anti-Money Laundering
Act; OFAC; Investment Company Act of 1940, as amended, and other laws restricting incurrence of debt; use of proceeds; taxes; accuracy and completeness of disclosure; solvency; labor matters; employee benefit plans, ERISA and pensions (including
defined benefit plans); environmental matters; FCC permits and FCC matters; insurance; security documents and creation, validity, perfection and priority of security interests in the Collateral (subject to permitted liens); acquisition documents;
status of the Facilities as senior

  
 Exhibit A-13 

					
		 		  	 debt; anti-terrorism laws, money laundering activities and dealing with embargoed persons; value of Quebec-based Collateral; and no casualty;
subject in the case of each of the foregoing representations and warranties, to customary exceptions, qualifications and baskets, including for materiality to be agreed consistent with the Documentation Principles.

 
 The representations and warranties will be required to be made in connection with each
extension of credit (including the extension of credit on the Closing Date, subject to the Certain Funds Provision).

			
		 	Conditions Precedent to all Borrowings (except on the Closing Date):	  	Except with respect to borrowings and other credit extensions on the Closing Date, each borrowing and each other extension of credit shall be subject only to the following conditions precedent: (i) delivery of notice of borrowing or
request for issuance of letter of credit; (ii) accuracy of representations and warranties in all material respects (provided, that any representation and warranty that is qualified as to “materiality,” “material adverse effect”
or similar language shall be true and correct in all respects (after giving effect to any such qualification therein)); and (iii) the absence of defaults or events of default at the time of, or immediately after giving effect to the making of, such
extension of credit.
			
		 	Affirmative Covenants	  	Limited to the following (to be applicable to the Borrowers and their subsidiaries): delivery of annual and quarterly financial statements (and in connection with the annual financial statements, an annual audit opinion from a
nationally recognized auditor that is not subject to any qualification as to “going concern” or scope of the audit), annual budget, MD&A, accountants’ letters, projections, officers’ certificates, SEC and other securities
exchange filings, and other information requested by the Administrative Agent; notices of default under the Facilities, litigation, other material events and prepayments; existence; maintenance of business and properties; maintenance of insurance;
payment and performance of obligations and taxes; employee benefits, ERISA and pensions; maintaining books and records; access to properties and inspections; use of proceeds; compliance with laws (including environmental laws, FCC and other
regulatory matters) and material contracts; environmental reports; additional collateral and additional guarantors; inspection rights; communications authorizations; further assurances, information regarding Collateral; including as to security;
regulatory matters; upon the request of the Administrative Agent, annual lender conference calls; quarterly investor conference calls; and using

  
 Exhibit A-14 

					
		 		  	commercially reasonable efforts (including, in all events, applying to maintain each credit rating and paying all usual and customary fees and expenses to each of S&P and Moody’s with respect to each credit rating) to
maintain public ratings, in each case, without regard to the level of such ratings; subject, in the case of each of the foregoing covenants, to customary exceptions, qualifications and baskets to be agreed consistent with the Documentation
Principles.
			
		 	Negative Covenants	  	 Limited to the following (to be applicable to the Borrowers and their subsidiaries): indebtedness (including mandatorily redeemable equity
interests, guarantees and other contingent obligations); liens; sale and leaseback transactions; investments (including permitted acquisitions, loans, etc.), loans and advances; asset sales; mergers, acquisitions, consolidations, liquidations and
dissolutions; dividends and other payments in respect of equity interests and other restricted payments (but excluding payments to dissenting shareholders in connection with the Acquisition); transactions with affiliates; prepayments, redemptions
and repurchases of other indebtedness; modifications of organizational documents, acquisition documents, debt instruments and certain other documents; limitations on restrictive agreements and certain restrictions on subsidiaries; limitations on
issuance of capital stock, including disqualified capital stock; limitations on business activities; fundamental changes; limitations on accounting changes; changes in fiscal year; use of proceeds; no further negative pledges and anti-terrorism
laws, money-laundering activities and dealing with embargoed persons, and restrictions on new defined benefit plans (subject to acquisition exceptions to be agreed). Additional limitations shall be imposed on non-Credit Parties and on transactions
between Credit Parties and non-Credit Parties in accordance with the Documentation Principles.
  

The negative covenants will be subject, in the case of each of the foregoing covenants to customary exceptions, qualifications and baskets consistent with the
Documentation Principles, including an available amount basket (the “Available Amount Basket”) that will consist of, without duplication, (a) retained excess cash flow, plus (b) the net cash proceeds of equity
issuances and capital contributions (other than disqualified capital stock), plus (c) the net cash proceeds of sales of investments made with the Available Amount Basket. The Available Amount Basket may be used for investments;
provided, that (i) no default or event of default has occurred or is continuing or shall exist 

  
 Exhibit A-15 

					
		 		  	immediately as a result therefrom, (ii) the Borrowers shall be in compliance with a pro forma consolidated total net leverage ratio to be agreed and (iii) delivery of an officer’s certificate to the Administrative Agent
certifying as to compliance the foregoing. The negative covenants will also be subject to certain permitted post-closing reorganization steps being contemplated by the Borrowers to the extent such reorganization matters are permitted by the Loan
Documents, or otherwise do not adversely affect the security interest in the Collateral and are approved by the Administrative Agent in its sole discretion.
			
		 	Financial Covenants	  	 Limited to a maximum consolidated total net leverage ratio (i) with the definitions, and applicable levels and ratios to be agreed consistent
with the Documentation Principles, provided that the unrestricted cash and cash equivalents netted from indebtedness in the calculation of such ratio shall not exceed $50.0 million, (ii) with accounting terms to be interpreted, and all
accounting determinations and computations to be made, in accordance with generally accepted accounting principles in the United States, and (iii) which shall be tested on the last day of each fiscal quarter and set at levels to reflect a 25%
non-cumulative cushion from consolidated EBITDA in the financial model dated November 1, 2013 provided to the Arrangers.
  

The foregoing financial covenant will be tested with respect to the Borrowers and their subsidiaries on a consolidated basis, with the first covenant test to
commence with the first full fiscal quarter ending after the Closing Date.

			
		 	Events of Default	  	Limited to the following (to be applicable to the Borrowers and their subsidiaries): nonpayment in the required currency of principal when due; failure to deposit cash collateral when due, nonpayment of in the required currency of
interest, fees or other amounts after a three business day grace period; inaccuracy of representations and warranties in any material respect; violation of covenants; cross-default and cross-acceleration under material agreements and material
indebtedness (including lease purchase transactions); bankruptcy and insolvency events; material judgments; ERISA and other pension events; actual or asserted invalidity or impairment of guarantees, security documents or any other Loan Documents
(including the failure of any lien on any portion of the Collateral to remain perfected with the priority required under the Loan Documents); failure of Facilities to constitute senior debt; and a “Change of Control” (to be
defined);

  
 Exhibit A-16 

					
		 		  	subject to customary threshold, notice and grace period provisions, and other exceptions to be mutually and reasonably agreed consistent with the Documentation Principles.
			
		 	Equity Cure Rights	  	In the event that the Borrowers fail to satisfy the financial covenant, the Loan Documents will contain certain equity cure rights pursuant to which, subject to the terms and conditions thereof to be agreed consistent with the
Documentation Principles, the proceeds of common equity or preferred equity (other than disqualified stock (to be defined)) contributions directly or indirectly to Mitel (“Equity Cure Contributions”) shall be treated on a
dollar-for-dollar basis as EBITDA of the Borrowers solely for purposes of retroactively curing the default(s) under such financial covenant; provided that (i) in each four fiscal quarter period, there shall be a period of at least two
consecutive fiscal quarters in respect of which no Equity Cure Contributions are made, (ii) no more than five Equity Cure Contributions may be made during the term of the Facilities, (iii) the amount of any Equity Cure Contributions in any fiscal
quarter shall be no greater than the amount required to cause the Borrowers to be in compliance with the financial covenant as at the end of such fiscal quarter, (iv) any reduction in indebtedness with the proceeds of any Equity Cure Contribution
shall be ignored for purposes of determining compliance with the financial covenant, and (v) all Equity Cure Contributions shall be disregarded for all purposes other than retroactively curing defaults under the financial covenant, including being
disregarded for purposes of determining any baskets with respect to the covenants contained in the Loan Documents; provided that to the extent Consolidated EBITDA has been increased for any fiscal quarter as a result of an Equity Cure
Contribution, Consolidated EBITDA as so increased for such fiscal quarter shall apply for any subsequent determination of the consolidated total net leverage ratio which includes such fiscal quarter.
			
		 	Voting	  	Amendments and waivers with respect to the Loan Documents will require the approval of Lenders (that are not defaulting Lenders) holding not less than a majority of the aggregate principal amount of the Loans including
participations in Swing Line Loans and Letters of Credit and unused commitments under the Facilities (the “Required Lenders”) (with certain amendments and waivers also requiring class votes), except that (i) the consent
of each Lender directly affected thereby shall be required with respect to (a) reductions in the amount or extensions of the final maturity of any Loan,

  
 Exhibit A-17 

					
		 		  	(b) reductions in the rate of interest (other than a waiver of default interest) or any fee or other amount payable or extensions of any due date thereof, (c) increases in the amount or extensions of the expiration date of
any Lender’s commitment or (d) modifications to the assignment provisions of the Loan Documents that further restrict assignments thereunder and (ii) the consent of 100% of the Lenders shall be required with respect to
(a) reductions of any of the voting percentages or pro rata provisions, (b) releases of all or substantially all of the value of the guarantees of the Guarantors or of all or substantially all of the Collateral (other than in connection
with permitted asset sales or other disposition) or (c) assignments by any Credit Party of its rights or obligations under the Facilities.
			
		 	Assignments and Participations	  	 The Lenders shall be permitted to assign and sell participations in their loans and commitments, subject, in the case of assignments (other
than assignments to another Lender, an affiliate of a Lender or an “approved fund” (to be defined in the Loan Documents)), to the consent of (x) the Administrative Agent, (y) with respect to the Revolving Credit Facility only, the
Issuing Lender and Swing Line Lender and (z) so long as no default or event of default has occurred and is then continuing, the Borrowers (which consent shall not be unreasonably withheld, delayed or conditioned, with the Borrowers being deemed to
be withholding their consent reasonably if the proposed assignee or participant is a competitor (to be defined in the Loan Documents)); provided that the Borrowers shall be deemed to have consented to such assignment if the Borrowers have not
otherwise rejected in writing such assignment within ten business days of the date on which such assignment is requested; provided further that, neither the Term Loan Facility nor the Revolving Credit Facility shall be participated or
assigned to any natural person. In the case of partial assignments (other than to another Lender, an affiliate of a Lender or an approved fund), the minimum assignment amount shall be $1.0 million with respect to Term Loans and $2.5 million
with respect to the Revolving Credit Facility. Assignments will be made by novation and will not be required to be pro rata among the Facilities. The Administrative Agent shall receive an administrative fee of $3,500 in connection with each
assignment unless otherwise agreed by the Administrative Agent.
  
 Participants shall
have the same benefits as the Lenders with respect to yield protection and increased cost provisions, and will be subject to customary limitations on voting rights (as mutually agreed). Participants’ and assignees’ entitlements to gross up
provisions for withholding taxes shall be subject to customary limitations for transactions and facilities of this type.

  
 Exhibit A-18 

					
		 		  	 Pledges of Loans in accordance with applicable law shall be permitted without restriction. Promissory notes shall be issued under the
Facilities only upon request.
  
 The Loan Documents shall contain customary provisions
(as reasonably determined by the Arranger) for replacing non-consenting Lenders in connection with amendments and waivers requiring the consent of all Lenders or of all Lenders directly affected thereby so long as Lenders holding at least a majority
of the aggregate principal amount of the Loans including participations in Letters of Credit and Swing Line Loans and unused commitments under the Facilities shall have consented thereto.

			
		 		  	In addition, the Loan Documents shall (i) contain sponsor permitted assignee language consistent with the Documentation Principles, and (ii) provide that the Term Loans may be purchased by the Borrowers on a non-pro rata basis
through Dutch auctions open to all Lenders on a pro rata basis in accordance with customary procedures to be agreed; provided that (i) any such Term Loans acquired by the Borrowers shall be retired and cancelled immediately upon acquisition
thereof, (ii) each Borrower must provide a customary representation and warranty to the effect that it is not in possession of any non-public information with respect to the business of the Borrowers or any of their subsidiaries at the time of such
purchase that has not been disclosed generally to private side lenders that could reasonably be expected to have a material effect upon, or otherwise be material to, a Lender’s decision to assign the Term Loans, (iii) the Term Loans may not be
purchased with the proceeds of loans under the Revolving Credit Facility, (iv) no default or event of default shall exist or result therefrom, (v) the Borrowers shall have aggregate liquidity not less than an amount to be agreed, and (vi) any such
Term Loans acquired by the Borrowers shall not be deemed a repayment of the Term Loans for purposes of calculating excess cash flow or otherwise deemed to increase EBITDA.
			
		 	Defaulting Lenders	  	The Loan Documents shall contain customary provisions relating to “defaulting” Lenders consistent with the Documentation Principles, including provisions relating to providing cash collateral to support Swing Line
Loans or Letters of Credit, the suspension of voting rights and of rights to receive certain fees, and termination or assignment of commitments or Loans of such Lenders.

  
 Exhibit A-19 

					
			
		 	Cost and Yield Protection	  	Each holder of Loans and each Issuing Lender will receive cost and interest rate protection customary for facilities and transactions of this type, including compensation in respect of prepayments, taxes (including customary
gross-up provisions for withholding taxes imposed by any governmental authority), changes in liquidity or capital requirements, guidelines or policies or their interpretation or application after the Closing Date (including, for the avoidance of
doubt (and regardless of the date adopted or enacted), with respect to (x) the Dodd-Frank Wall Street Reform and Consumer Protection Act and the rules and regulations with respect thereto and (y) all requests, rules, guidelines and directions
promulgated by the Bank for International Settlements, the Basel Committee on Banking Supervision (or any similar or successor agency, or the United States or foreign regulatory authorities, in each case, pursuant to Basel III)), illegality, change
in circumstances, reserves and other provisions reasonably deemed necessary by the Administrative Agent to provide customary protection for U.S. and non-U.S. financial institutions and other lenders, subject to, in the case of each of the foregoing,
the right to replace lenders claiming such cost and interest rate protection, customary notice and tolling provisions, mitigation requirements, certification requirements and other exceptions to be mutually and reasonably agreed upon and consistent
with the Documentation Principles.
			
		 	Expenses	  	The Borrowers shall jointly and severally pay (i) all reasonable and documented out-of-pocket expenses of the Administrative Agent, the Collateral Agent and Arrangers associated with the syndication of the Facilities and the
preparation, negotiation, execution, delivery, filing and administration of the Loan Documents and any amendment or waiver with respect thereto (including the reasonable and documented fees, disbursements and other charges of external counsel
(limited to one such counsel per jurisdiction) and consultants and the charges of IntraLinks, SyndTrak or a similar service) and (ii) all reasonable and documented out-of-pocket expenses of the Administrative Agent, the Collateral Agent, the
Arrangers, any other agent appointed in respect of the Facilities and the Lenders (including the reasonable and documented fees, disbursements and other charges of external counsel and consultants) in connection with the enforcement of, or
protection and preservation of rights under, the Loan Documents.

  
 Exhibit A-20 

					
			
		 	Indemnification	  	The Loan Documents will contain customary indemnities consistent with the Documentation Principles for (i) the Arrangers, the Collateral Agent, the Administrative Agent and the Lenders, (ii) each affiliate of any of the foregoing
persons and (iii) each of the respective officers, directors, partners, trustees, employees, affiliates, shareholders, advisors, agents, attorneys-in-fact and controlling persons of each of the foregoing persons referred to in clauses (i) and (ii)
above (other than as a result of such person’s (or any of such person’s subsidiaries’, officers’, directors’, employees’ or controlling persons’) gross negligence or willful misconduct as determined by a court of
competent jurisdiction in a final and non-appealable ruling.
			
		 	Governing Law and Forum	  	The Loan Documents will be governed by New York law and will provide for the Credit Parties to submit to the exclusive jurisdiction and venue of the Federal and state courts of the State of New York.
			
		 	Counsel to the Arrangers, the Collateral Agent and the Administrative Agent	  	Jones Day, with Blake, Cassels and Graydon LLP (Canada) acting as local counsel.

 * * * 

  
 Exhibit A-21 

 ANNEX A-I TO EXHIBIT A 

TO COMMITMENT LETTER 

Interest and Certain Fees 
  

					
			
		 	Interest Rate Options	  	The Borrowers may elect that the Loans or other extensions of credit comprising each borrowing bear interest at a rate per annum equal to:
			
		 		  	(i) the Base Rate (if such Loan is denominated in U.S. Dollars) or the Canadian Prime Rate (if such denominated in Canadian Dollars), as applicable, plus the Applicable Margin; or
			
		 		  	 (ii) Adjusted LIBOR plus the Applicable Margin;
  

provided that all Swing Line Loans will be Base Rate Loans or Canadian Prime Rate Loans, as applicable.

			
		 		  	The Borrowers may elect interest periods of 1, 2, 3 or 6 months for Adjusted LIBOR Loans (as defined below).
			
		 		  	As used herein:
			
		 		  	 “Applicable Margin” means:
  

(A) with respect to Revolving Credit Loans, (i) initially, 4.00%, in the case of Base Rate Loans and Canadian Prime Rate Loans, and (ii) initially,
5.00%, in the case of Adjusted LIBOR Loans and Canadian banker’s acceptances; subject to one 0.25% step-down at a consolidated total net leverage ratio level to be agreed; and

 
 (B) with respect to Term Loans, (i) 4.00%, in the case of Base Rate Loans and
(ii) 5.00%, in the case of Adjusted LIBOR Loans.

			
		 		  	 “Base Rate” means the highest of (i) the “U.S. Prime Lending Rate” as published in The Wall Street
Journal (the “Prime Rate”), (ii) the federal funds effective rate from time to time, plus 0.50%, (iii) Adjusted LIBOR for a one-month interest period plus 1.00% and (iv) 2.00%.

 
 “Adjusted LIBOR” means the higher of (i) the rate per annum
(adjusted for statutory reserve requirements for Eurocurrency liabilities) at which Eurodollar deposits are offered in the interbank Eurodollar market for the applicable interest period, as quoted on Reuters Screen LIBOR01 Page (or any successor
page or service) and (ii) 1.00%.

  
 Annex A-I-1 

					
			
		 		  	 “Canadian Prime Rate” means, for any day, a fluctuating rate of interest per annum (rounded upward, if necessary, to
the next highest 1/100th of 1%) equal to the highest of (a) the CDOR Rate for 30 day bankers’ acceptances plus 0.50% and (b) the “Canadian Prime Lending Rate” as published in The Wall Street Journal”.

 
 “CDOR Rate” means, for a particular term, the discount rate per
annum, calculated on the basis of a year of 365 days, equal to the average rate per annum for Canadian bankers’ acceptances having such term that appears on the Reuters Screen CDOR Page (or any successor page) as of 10:00 a.m., Toronto time, on
the first day of such term as determined by the Administrative Agent or, if such rate is not available at such time, the discount rate for Canadian bankers’ acceptances accepted by the Administrative Agent having such term as calculated by the
Administrative Agent in accordance with normal market practice on such date.

			
		 	Interest Payment Dates	  	With respect to Loans bearing interest based upon Adjusted LIBOR (“Adjusted LIBOR Loans”), on the last day of each relevant interest period and, in the case of any interest period longer than three months, on
each successive date three months after the first day of such interest period and on the applicable maturity date.
			
		 	Unutilized Commitment Fee	  	The Borrowers shall jointly and severally pay a commitment fee calculated at the rate of 0.50% per annum, on the average daily unused portion of the Revolving Credit Facility, payable quarterly in arrears, subject to one
step-down to 0.375% at a consolidated total net leverage ratio level to be agreed. For purposes of the commitment fee calculations only, Swing Line Loans shall not be deemed to be a utilization of the Revolving Credit Facility.
			
		 	Letter of Credit Fees	  	The Borrowers shall jointly and severally pay a commission on all outstanding Letters of Credit at a per annum rate equal to the Applicable Margin then in effect with respect to Revolving Credit Loans made or maintained as
Adjusted LIBOR Loans on the face amount of each such Letter of Credit. Such commission shall be shared ratably among the Lenders participating in the Revolving Credit Facility and shall be payable quarterly in arrears.
			
		 		  	In addition to letter of credit commissions, a fronting fee calculated at a rate per annum to be agreed upon by the Borrowers and the Issuing Lender on the face amount of each Letter of Credit shall be payable quarterly in
arrears to the Issuing Lender for its own account. In addition, customary (as determined by the Issuing Lender) 

  
 Annex A-I-2 

					
		 		  	administrative, issuance, amendment, payment and negotiation charges shall be payable to the Issuing Lender for its own account.
			
		 	Default Rate	  	Upon the occurrence and during the continuance of a payment or bankruptcy event of default, all overdue principal, interest, fees and other amounts outstanding under the Facilities shall bear interest at 2.00% above the rate
applicable to Base Rate Loans and shall be payable on demand.
			
		 	Rate and Fee Basis	  	All per annum rates shall be calculated on the basis of a year of 360 days (or 365/366 days, in the case of Base Rate Loans, the interest rate payable on which is then based on the Prime Rate) for the actual number
of days elapsed (including the first day but excluding the last day).

 * * * 

  
 Annex A-I-3 

 EXHIBIT B TO COMMITMENT LETTER 

CLOSING CONDITIONS 

Capitalized terms used but not defined in this Exhibit B have the meanings assigned to them elsewhere in this Commitment Letter. The
closing of the Facilities and the making of the initial loans and other extensions of credit under the Facilities are conditioned upon satisfaction of the conditions precedent contained in Section 3 of this Commitment Letter and those
identified below. 
 1. Concurrent Financings. The Definitive Debt Documents shall be prepared by our counsel, shall be consistent
with the Documentation Principles and the Debt Financing Letters, and shall have been executed and delivered by the Borrowers and the Guarantors to the Administrative Agent; provided that this condition is subject to the Certain Funds
Provision. The Collateral Agent, for the benefit of the Lenders under the Facilities and the other secured parties thereunder, shall have been granted perfected first priority security interests in all assets of the Credit Parties to the extent
described in Exhibit A to this Commitment Letter under the caption “Collateral” in form and substance satisfactory to the Collateral Agent; provided that this condition is subject to the Certain Funds Provision. The Debt
Financing Letters shall be in full force and effect. 
 2. Transactions. All material governmental, corporate and third party
authorizations, consents and approvals required to consummate the Transactions shall have been obtained and be in full force and effect, and all applicable waiting periods shall have expired without any action being taken or threatened by any
competent authority that would materially restrain, prevent or otherwise impose material adverse conditions on the Transactions or any portion thereof. The Transactions shall have been consummated or will be consummated concurrently with or
immediately following the borrowing of the Term Loans, and the receipt by the Acquiror of the proceeds of the foregoing, and the Target shall have become, or will contemporaneously on the Closing Date, become a wholly-owned subsidiary of Mitel. 

3. Refinancing of Existing Debt. Concurrently with the consummation of the Acquisition, the Refinancing shall have been consummated,
all commitments relating thereto shall have been terminated, and all liens or security interests related thereto shall have been (or concurrently with the initial funding of the Facilities will be) terminated or released. Immediately after giving
effect to the Transactions, the Company shall have outstanding no indebtedness or preferred stock (or direct or indirect guarantee or other credit support in respect thereof) other than (i) the indebtedness in respect of the Debt Financing,
(ii) indebtedness in respect of letters of credit, unsecured notes payable in an aggregate amount not to exceed $5,000,000, intercompany indebtedness, purchased leases (to the extent constituting indebtedness), and such other indebtedness as
may be reasonably agreed by us, and (iii) capital lease obligations of the Credit Parties in existence on the date hereof and reflected in Mitel’s consolidated balance sheets for the fiscal quarter ended July 31, 2013 and the
Target’s consolidated balance sheets for the fiscal quarter ended September 30, 2013. 
 4. Financial Information. We shall
have received (A) audited consolidated balance sheets and related statements of income, stockholders’ equity and cash flows of the Acquiror and the Acquired Business for the last three full fiscal years ended at least 90 days prior to the
Closing Date, (B) unaudited consolidated balance sheets and related statements of income, stockholders’ equity and cash flows of the Acquiror and the Acquired Business for each subsequent interim quarterly period ended at least 45 days
prior to the Closing Date (and the corresponding period for the prior fiscal year), (C) a pro forma consolidated balance sheet and related pro forma consolidated statement of income (but not a pro forma statement of cash
flows) of Mitel and its subsidiaries (after giving effect to the Acquisition and the other Transactions) as of and for the twelve-month period ending on the last day of the most recently completed four-fiscal quarter period ended at least 90 days
prior to the Closing Date (if such period is a fiscal year) or at least 45 days prior to the Closing Date (if such period is a fiscal quarter), prepared after giving effect to the Acquisition and other Transactions, and (D) satisfactory
projections (including the assumptions on which such projections are based) for the Company for fiscal years 2013 through and including 2019. 

  
 Exhibit B-1 

 5. Marketing Period. The Arrangers shall have been afforded a period (the
“Marketing Period”) of at least 15 consecutive business days prior to the Closing Date (ending on the business day no later than the business day immediately prior to the Closing Date) following receipt of the Confidential
Information Memorandum; provided, that such Marketing Period shall not commence until January 6, 2014. 
 6. Payments.
All costs, fees, expenses (including reasonable and documented legal fees and out-of-pocket expenses and recording taxes and fees) and other compensation and amounts contemplated by the Debt Financing Letters or otherwise payable to us, the Lenders
or any of our or their respective affiliates pursuant to the Commitment Letter, shall have been (or concurrently with the initial funding of the Facilities will be) paid to the extent due and payable in accordance with the terms, respectively,
thereof. 
 7. Customary Closing Documents. Delivery of the following customary documents required to be delivered under the
Definitive Debt Documents, consistent with the Documentation Principles: customary lien, litigation and tax searches, customary legal opinions (it being understood that the Arrangers will consider accepting in-house legal opinions with respect to
certain corporate matters), corporate records and documents from public officials and officers’ certificates, payoff letters and lien releases shall have been delivered. In addition, you shall have delivered (a) at least five business days
prior to the Closing Date, all documentation and other information required by U.S. and Canadian regulatory authorities under applicable “know-your-customer” and anti-money laundering rules and regulations, including the Patriot Act and
Anti-Money Laundering Act (Canada) as have been reasonably requested in writing at least ten days prior to the Closing Date by such Lenders, (b) a certificate from the chief financial officer of Mitel in a customary form reasonably satisfactory
to the Arrangers, certifying that the Borrowers and their subsidiaries on a consolidated basis immediately after giving effect to the Transactions are solvent and (c) a customary borrowing notice. 

8. Accuracy of Representations and Warranties. Subject to the Certain Funds Provision, the representations and warranties in the Loan
Documents shall be true and correct in all material respects (provided, that any representation and warranty that is qualified as to “materiality,” “material adverse effect” or similar language shall be true and correct in
all respects (after giving effect to any such qualification therein)). 
 9. Acquisition Conditions. The Acquisition Conditions (as
defined and set forth on Exhibit C hereto) shall have been satisfied. 

  
 Exhibit B-2 

 EXHIBIT C TO COMMITMENT LETTER 

ACQUISITION CONDITIONS 
  

	a)	Mitel shall have entered into voting support agreements with all directors of the Target. 

  

	b)	Mitel shall have entered into an arrangement agreement with the Target (as may be amended in accordance with the terms of this Commitment Letter and together with the annexes, schedules, exhibits and attachments
thereto, the “Arrangement Agreement”) on terms and conditions (including the aggregate consideration payable under the Arrangement) satisfactory to the Arrangers. The Arrangement Agreement will provide, without limitation,
that: 

  

	 	(i)	the board of the Target (and any independent/special committee of such board) unanimously recommends the Arrangement to all holders of the Shares; 

 

	 	(ii)	the board of the Target (and any independent/special committee of such board) will agree to, immediately following the execution of the Arrangement Agreement: 

 

	 	(A)	promptly call a special meeting of securityholders (in accordance with the terms of the interim order granted by the court and otherwise in accordance with applicable law and policies) and promptly prepare and mail a
management proxy circular in respect of such special meeting and the Arrangement; and 

  

	 	(B)	support and recommend the Arrangement to the securityholders; and 

  

	 	(iii)	(i) upon any termination of the Arrangement Agreement under circumstances where the Target is entitled to a fee and such fee is paid in full, the Target shall be precluded from any other remedy against the Acquiror at
law or in equity or otherwise (including, without limitation, an order for specific performance), and shall not seek to obtain any recovery, judgment, or damages of any kind, including consequential, indirect, or punitive damages, against the
Acquiror or any of its Subsidiaries or any of its directors, officers, employees, partners, managers, members, shareholders or affiliates or their respective representatives in connection with the Arrangement Agreement or the transactions
contemplated thereby and Target expressly waives any claims against the parties to the Commitment Letter, (ii) any action or proceeding involving the Arrangers or any Lender (including, without limitation, the agents under the Facilities)
arising out of or relating to the Acquisition, the Arrangement Agreement, the Debt Financing Letters, the Facilities or the performance of any services thereunder be subject to the exclusive jurisdiction of a state or federal court sitting in the
City of New York, State of New York, (iii) the Target will not, and it will not permit any of its affiliates to, bring or support anyone else in bringing any claim, action or proceeding in any other court, (iv) the Target waives any right
to trial by jury in respect of any such claim, suit, action or proceeding, and (v) the Arrangers and the Lenders (and their respective affiliates) are express third-party beneficiaries of the provisions in the Arrangement Agreement reflecting
the foregoing agreements. 

 It is understood and agreed that draft of the Arrangement Agreement delivered to the Arrangers on
the date hereof is satisfactory to the Arrangers. 
  

	c)	The Borrower shall not waive, amend, or provide any consent with respect to, any term or condition of the Arrangement Agreement: 

  

	 	(i)	that increases the aggregate consideration (other than an increase in the equity portion of the aggregate consideration or an increase in the cash portion of the aggregate consideration to the extent funded with the
proceeds of an equity issuance by Mitel); 

  
 Exhibit C-1 

	 	(ii)	set out in section 6.1(d) or (f) thereof; or 

  

	 	(iii)	that otherwise, individually or in the aggregate, is or could reasonably be expected to materially and adversely affect the interests of the Arrangers and the Lenders in their respective capacities as such (it being
understood and agreed that (1) any decrease in the per share consideration paid in an amount less than 10% shall be deemed to be adverse to the interest of the Lenders and the Arrangers unless such decrease is utilized to reduce the Term Loan
Facility, (2) any decrease in the per share consideration paid in an amount equal to or greater than 10% shall be deemed to be adverse to the interest of the Lenders and the Arrangers, (3) any change to the definition of “Target
Material Adverse Effect” or similar definition shall be deemed to be adverse to the interests of the Lenders and the Arrangers, and (4) any modifications to any of the provisions relating to the Administrative Agent’s, the
Collateral Agent’s, the Arrangers’ or any Lender’s liability, jurisdiction or status as a third party beneficiary under the Arrangement Agreement shall be deemed to be adverse to the interests of the Lenders and the Arrangers).

  

	d)	The Transactions shall have been consummated or will be consummated concurrently with or immediately following the borrowing of the Term Loans, and the receipt by the Acquiror of the proceeds of the foregoing, in
accordance with the terms and conditions of the Arrangement Agreement, without amendment, modification or waiver of the provisions described in clauses (i), (ii) or (iii) of item c) above. 

 

	e)	Mitel shall provide evidence that the resolution approving the Arrangement has been approved at the special meeting by: (i) at least 66 2/3% of the shares of each class of Shares present in person or by proxy at
the meeting; (ii) if applicable, at least a majority of the shares of each class of Shares present in person or by proxy at the meeting) as are required to ensure minority approval of the Arrangement pursuant to Multilateral Instrument 61-101
and (iii) such other approvals by securityholders as may be required by applicable law or the interim order. 

  

	f)	A court of proper jurisdiction shall have granted a final order approving the Arrangement on terms satisfactory to the Arrangers. 

  

	g)	Delivery by Mitel of a certificate setting out the amount required to pay for the Shares exchanged for cash consideration under the Arrangement, together with evidence that all amounts required to complete the
Arrangement that are not being funded under the Term Loan Facility have been paid by Mitel to the depository under the Arrangement for payment to securityholders. 

 

	h)	Proceeds of the advance under the Term Loan Facility being paid directly or indirectly to the depository under the Arrangement, to the extent being used to pay for the Shares. 

  
 Exhibit C-2

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