Document:

Asset Purchase Agreement

 Exhibit 10.79 
 ASSET PURCHASE AGREEMENT 
 This Asset Purchase Agreement (the “Agreement”) is
made and entered into as of September 19, 2006 by and among Molecular Imaging Sorrento Valley LLC, a Delaware limited liability company (“PET LLC”), Molecular Imaging Corporation, a Delaware corporation
(“MIC”), and The Regents of the University of California, a California corporation, on behalf of UCSD Medical Group (“UCSD”), with reference to the following facts: 
 A. The parties have entered into an Asset Purchase Agreement dated as of August 15, 2003 (the “2003 Asset Purchase Agreement”)
pursuant to which UCSD has purchased from PET LLC a CTI HR+ PET Scanner and certain tenant improvements relating thereto (the “PET Scanner”) located at the at 11388 Sorrento Valley Road, San Diego, California 92121 (the
“Center”); 
 B. UCSD and PET LLC have entered into an Equipment Sublease Agreement dated August 15, 2003, as modified
by the term sheet dated September 24, 2004 (the “PET Equipment Sublease”), pursuant to which UCSD subleases the PET Scanner to PET LLC; 
 C. UCSD and PET LLC have entered into a Professional Services Agreement dated August 15, 2003 (the “Professional Services Agreement”) pursuant to which UCSD provides certain reading services at
the Center. 
 D. MIC has entered into an Agreement of Sub-Lease dated February 24, 2006 (the “Center Sublease”) with
Siemens Medical Solutions USA, Inc. (“Siemens”) pursuant to which PET LLC uses space at the Center; 
 E. PET LLC desires to
sell, and UCSD desires to purchase, the PET Scanner and related equipment, and the parties desire to transfer all of the assets required for operation of the Center to UCSD, on the terms and conditions set forth herein. 
 NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties agree as follows:

 1. Basic Transaction. 
 1.1 Purchase and Sale of PET Assets. On and subject to the terms and conditions of this Agreement, UCSD agrees to terminate the PET Equipment Sublease and to purchase from PET LLC, and PET LLC agrees to sell,
transfer, convey, and deliver to UCSD at the Closing, all of its right, title, and interest in and to (i) the PET Scanner and related assets (collectively, the “PET Acquired Assets”) listed in Exhibit “A”,
(ii) all business and financial records associated with the PET business located at the Center and appropriate and necessary for the continued operation of the PET Scanner, and (iii) any and all assignable customer contracts and related
goodwill. 
  

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 1.2 Assumption of PET Liabilities. UCSD shall not assume and shall under no
circumstances be responsible for any obligation or liability of PET LLC with respect to and/or arising out of the PET Acquired Assets before the Closing Date. UCSD shall assume all obligations and liabilities arising out of the PET Acquired Assets
and the Center on and after the Closing Date. 
 1.3 Accounts Receivable/Accounts Payable. Subject to PET LLC’s
compliance with Section 1.6, below, PET LLC shall retain all cash, current outstanding accounts receivable (the “PET AR”) and accounts payable obligations (the “PET AP”) of PET LLC as of the Closing Date. PET
LLC shall bill and collect for all outstanding PET AR and scans performed prior to the Closing Date, and PET LLC shall be solely responsible for the payment of all PET AP accrued prior to the Closing Date; provided, however, the PET AP shall not
include any amounts owed by PET LLC to UCSD, including, without limitation, amounts owed under the PET Equipment Sublease or the Professional Services Agreement. After the Closing Date, PET LLC shall have no obligations to pay any amounts owed by
PET LLC to UCSD relating to the Center. 
 1.4 Termination of Agreements. Effective upon the Closing, UCSD and PET LLC
agree that the 2003 Asset Purchase Agreement, PET Equipment Sublease, and the Professional Services Agreement shall be terminated, and no party shall have any further obligations to the other under such agreements, including, without limitation, any
obligation by PET LLC to pay any amounts of rent, additional rent, or any reading fees. 
 1.5 Termination and Transfer of
Center Sublease. At the Closing, MIC shall deliver a document, reasonably satisfactory to UCSD and MIC, executed by Siemens, pursuant to which Siemens agrees to terminate the Center Sublease. 
 1.6 Adherence to Cash Disbursement Schedule. From and after July 15, 2006 and until the Closing Date, PET LLC shall have
adhered to the Cash Disbursement Schedule (the “Cash Adherence Schedule”) attached to the Term Sheet dated August 28, 2006 between the parties. 
 1.7 Mutual Releases. The parties intend the transaction contemplated in this Agreement to be constitute a full and complete
settlement and release of all historical obligations related to the PET Acquired Assets and the Center. Effective upon the Closing, the parties agree as follows: 
 (a) PET LLC and MIC Release. Each of PET LLC and MIC releases and discharges UCSD and its past and present employees, officers,
agents, and attorneys from any and all liabilities, claims, loss, damages, defenses, fees and costs (including costs of suit and attorneys’ fees and expenses) of whatever nature, character, type, or description, whether known or unknown,
existing or potential, matured or unmatured, liquidated or unliquidated, direct or consequential, 

  

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suspected or unsuspected, or foreseen or unforeseen, asserted in or relating to the Center, including, without limitation, the 2003 Asset Purchase Agreement,
the PET Equipment Sublease, the Professional Services Agreement and any and all agreements or documents related thereto. 
 (b) UCSD releases and discharges each of PET LLC and MIC, and their respective past and present employees, officers, directors, members, parents, subsidiaries, agents and attorneys, from any and all liabilities, claims, loss, damages,
defenses, fees and costs (including costs of suit and attorneys’ fees and expenses) of whatever nature, character, type, or description, whether known or unknown, existing or potential, matured or unmatured, liquidated or unliquidated, direct
or consequential, suspected or unsuspected, or foreseen or unforeseen, asserted in or relating to the Center, including, without limitation, the 2003 Asset Purchase Agreement, the PET Equipment Sublease, the Professional Services Agreement and any
and all agreements or documents related thereto 
 (c) California Civil Code Section 1542. 
 The parties each acknowledge, warrant, and represent that they have been advised by their respective attorneys concerning, and that they
are familiar with, section 1542 of the California Civil Code (“Section 1542”), which provides: 
 A GENERAL
RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS FAVOR AT THE TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM MUST HAVE MATERIALLY AFFECTED HIS SETTLEMENT WITH THE DEBTOR. 
 In waiving the provisions of Section 1542, the parties each acknowledge that they may have sustained damages, losses, costs, or
expenses that presently are unknown and unsuspected, and that such damages, losses, costs, or expenses as may have been sustained may give rise to additional damages, losses, costs, or expenses in the future. The parties further acknowledge that
they have negotiated this Agreement taking into account such presently unsuspected and unknown damages, losses, costs, and expenses, and the parties expressly waive any and all rights that they have under Section 1542 or under any other state
or federal statute, rule, or common law principle, in law or in equity, of similar effect. 
 1.8 PET LLC Employees.
The parties shall coordinate an offer of employment (permanent or temporary) from UCSD to the Center’s Director and PET Technologist. At the request of MIC, UCSD shall enter into a mutually agreeable arrangement to allow the PET Technologist to
work for MIC outside of the Center as scheduling permits. 
 1.9 Transition Support. MIC and PET LLC shall provide a
commercially reasonable level of management support to assist in the transition of the Center operations to UCSD both prior to and following the Closing; provided, however, such support shall not include the use of the licenses, permits or billing
numbers of PET LLC. 
  

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 1.10 Contingent Payment. For each of the two (2) years beginning one
(1) year from the first day of the first month after the Closing Date, UCSD shall pay MIC, or its successor or designee, (a) twenty percent (20%) of the amount of annual collected revenues derived from the operation of PET imaging at
the Center which exceeds $1,500,000, or (b) if applicable and if larger than the amount calculated under (a) above, fifteen percent (15%) of the amount of annual collected revenues derived from the operation of both PET and PET/CT
imaging at the Center which exceeds $2,000,000; provided, however, that UCSD shall retain an amount equal to the sum of the amount of unpaid professional fees owed by PET LLC to UCSD under the Professional Services Agreement as of the Closing Date,
and the unpaid amounts owed by PET LLC under the PET Equipment Sublease as of the Closing Date, prior to any payment hereunder; and provided further, that for purposes of calculating revenues resulting from UCSD research studies, each scan performed
shall be recognized at $1300 per scan. UCSD shall maintain separate books of account relating to revenues at the Center in accordance with generally accepted accounting principles, and shall collect revenues in normal course so as not to deprive MIC
of the benefit of any contingent payment provided herein. MIC or its designee or assignee shall have the right, at its own expense (unless such audit results in not less than $10,000 in additional amounts to be paid MIC, in which event UCSD shall
pay the reasonable costs of such audit), to have an auditor of its own selection, examine at a time reasonably acceptable to UCSD, during normal business hours but not more than once each calendar year, the relevant books and records of account of
UCSD, to determine whether appropriate accounting has been made under the Section 1.10. 
 1.11 Right of First
Offer. 
 (a) At any time within a three (3) year period following the Closing Date, if UCSD or any of its affiliated
entities (collectively, the “UCSD Parties”), intends to offer PET or PET/CT imaging services, in San Diego County, California, from a mobile, transportable or re-locatable facility (the “New Project”), then UCSD
shall provide MIC or its successor/designee/assignee (the “MIC Party”) written notice of the New Project, describing in reasonable detail the terms and conditions of the proposed New Project. The MIC Party will have a period of
thirty (30) business days after receipt of the notice to deliver a written notice (the “Notice of Interest”) to UCSD indicating its interest in the New Project. If a MIC Party delivers a Notice of Interest to UCSD indicating
its interest in the New Project, then, prior to UCSD’s initiation of its own direct provision of PET or PET/CT imaging services, UCSD will first accept a proposal for the New Project from the MIC Party pursuant to which the MIC Party would
offer such services directly to members of the public, including without limitation, UCSD patients, at the same location. If the parties do not enter into definitive documentation for the New Project within ninety (90) calendar days after the
date of the Notice of Interest, then UCSD shall be free to negotiate with other third parties concerning the New Project. If a MIC Party does not deliver a Notice of Interest to UCSD within such thirty (30) business day period, (a) the MIC
Party shall be deemed to have rejected the New Project and (b) UCSD may during a ninety (90) calendar day period following the expiration of 

  

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the thirty (30) business day period referred to above, enter into agreements with any other third-party participant with respect to such New Project
upon terms no more favorable to the third-party participant than those specified in the notice delivered to the MIC Party with respect to such New Project. If, under applicable law, a New Project requires that UCSD solicit competitive bids, UCSD
will deem an MIC Party to be a responsible party for purposes of participating in the solicitation. 
 (b) Specific
Performance. UCSD recognizes and agree that any violation of this Section 1.11 may not be reasonably or adequately compensated in damages and that, in addition to any other relief to which the may be entitled by reason of such violation,
MIC shall also be entitled to permanent and temporary injunctive and equitable relief and, pending determination of any dispute with respect to such violation, no bond or security shall be required in connection therewith. Without limiting the
generality of the foregoing, UCSD acknowledges that a showing by MIC of any breach of any provision of this Section 1.11 shall constitute, for the purposes of all judicial determinations of the issue of injunctive relief, conclusive proof of
all of the elements necessary to entitle MIC to interim and permanent injunctive relief against UCSD with respect to such breach. 
 (c) Severability of Covenants. If any part of this Section 1.11 is held by a court of competent jurisdiction or any other governmental authority to be invalid, void, unenforceable or against public policy for any reason, the
remainder of such provision shall remain in full force and effect and shall in no way be affected, impaired or invalidated, and such court or authority shall be empowered to substitute, to the extent enforceable, provisions similar thereto or other
provisions so as to provide to the aggrieved party the benefits intended by such provisions, to the fullest extent permitted by applicable law. 
 2. Closing. The closing of the transactions contemplated by this Agreement (“Closing”) shall take place at a mutually agreeable location on the first business day following the satisfaction or
waiver of all conditions to the obligations of the parties to consummate the transactions contemplated hereby or such other date as UCSD, PET LLC and MIC may mutually determine, which the parties anticipate to occur on October 13, 2006 (the
“Closing Date”). On the Closing Date, (i) UCSD shall deliver to PET LLC any and all deliverables required under Section 3.1, and (ii) PET LLC and MIC shall deliver to UCSD any and all deliverables required under
Section 3.2. 
 3. Conditions Precedent to Closing. 
 3.1 Conditions to Obligations of PET LLC and MIC. The obligations of PET LLC and MIC to make the deliveries at the Closing are
subject to each of the following conditions: (i) the Center Sublease has been terminated and MIC has no further obligations under the Center Sublease whatsoever, (ii) all of the representations and warranties of UCSD contained herein shall
continue to be true and correct at the Closing in all respects, and (iii) UCSD has delivered to PET LLC and MIC, or is prepared to deliver, any and all documents required to be delivered by 

  

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UCSD, respectively, at the Closing or otherwise reasonably requested by PET LLC or MIC to give effect to the transactions contemplated herein. 
 3.2 Conditions to Obligations of UCSD. The obligations of UCSD to make the deliveries at the Closing are subject to each of the
following conditions: (i) PET LLC shall have adhered to the Cash Adherence Schedule from July 15, 2006, (ii) UCSD shall have entered into a sublease with Siemens on substantially the same economic terms as the Center Sublease,
(iii) Siemens shall have provided its consent for UCSD to operate the Center for up to ninety (90) days under the radiation permit or licenses issued to Siemens by the State of California, (iv) all the representations and warranties
of PET LLC and MIC contained herein shall continue to be true and correct at the Closing in all respects, and (v) PET LLC and MIC has delivered to UCSD, or is prepared to deliver, all documents required to be delivered by PET LLC and MIC,
respectively, at the Closing or otherwise reasonably requested by UCSD to give effect to the transactions contemplated herein. 
 3.3 Termination. If any of the conditions set forth in Section 3.1 is neither satisfied nor waived on or before October 13, 2006, then PET LLC or MIC may terminate this Agreement by delivering to written notice of
termination to UCSD. If any of the conditions set forth in Section 3.2 is neither satisfied nor waived on or before October 13, 2006, then UCSD may terminate this Agreement by delivering to written notice of termination to PET LLC. Any
waiver of a condition shall be effective only if such waiver is stated in writing and signed by the waiving party. 
 4.
Warranties, Representations and Covenants of PET LLC. PET LLC warrants, represents and covenants to UCSD as follows: 
 4.1 Corporate Status; Validity of Agreement. PET LLC is a limited liability company duly organized, validly existing and in good standing under the laws of the State of Delaware. PET LLC has full right, power and authority to execute
and deliver this Agreement and perform the transactions contemplated by this Agreement. The execution and delivery of this Agreement and the performance of the transactions contemplated hereby have been duly and validly authorized by all necessary
limited liability or other action on the part of PET LLC, and this Agreement, when executed and delivered by PET LLC, shall constitute the valid and binding obligation of PET LLC enforceable in accordance with its terms. 
 4.2 PET Acquired Assets. Other than as set forth on the Disclosure Schedule, (i) PET LLC is the owner of, and will has good
and marketable title to, all of the PET Acquired Assets to be sold under the terms of this Agreement, (ii) PET LLC has the power and authority to sell, convey and assign the PET Acquired Assets to UCSD, and (iii) at the Closing, PET LLC
shall transfer and convey to UCSD all of PET LLC’s right, title and interest in the PET Acquired Assets, free and clear of (a) all mortgages, pledges, security interests, charges, liens or encumbrances of any kind whatsoever and
(b) all other matters materially and adversely affecting the title thereto or otherwise interfering with or impairing the use thereof for the intended purpose. 
  

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 4.3 No Conflict. The execution and delivery of this Agreement, and the performance
of PET LLC’s obligations hereunder, (a) assuming the termination of the PET Equipment Sublease, are not in violation or breach of, and will not conflict with or constitute a default under any material note, debt instrument, security
agreement, lease, deed of trust or mortgage, or any other material contract, agreement or commitment binding upon PET LLC, or any of its assets or properties, (b) will not result in the creation or imposition of any lien, encumbrance, equity or
restriction in favor of any third party upon any of the PET Acquired Assets, and (c) will not conflict with or violate any applicable law, rule, regulation, judgment, order or decree of any government, governmental instrumentality or court
having jurisdiction over PET LLC or any of its properties. 
 5. Warranties, Representations and Covenants of UCSD.
UCSD warrants, represents and covenants to PET LLC as follows: 
 5.1 Corporate Status; Validity of Agreement. UCSD is
a California corporation duly organized, validly existing and in good standing under the Constitution and laws of the State of California. UCSD has full right, power and authority to execute and deliver this Agreement and perform the transactions
contemplated by this Agreement. The execution and delivery of this Agreement and the performance of the transactions contemplated hereby have been duly and validly authorized by all necessary corporate action on the part of UCSD, and this Agreement,
when executed and delivered by UCSD, shall constitute the valid and binding obligation of UCSD enforceable in accordance with its terms. 
 5.2 No Conflict. The execution and delivery of this Agreement, and the performance of UCSD’s obligations hereunder, (a) are not in violation or breach of, and will not conflict with or constitute a
default under any material note, debt instrument, security agreement, lease, deed of trust or mortgage, or any other material contract, agreement or commitment binding upon UCSD, or any of its assets or properties, (b) will not result in the
creation or imposition of any lien, encumbrance, equity or restriction in favor of any third party upon any of the PET Acquired Assets, and (c) will not conflict with or violate any applicable law, rule, regulation, judgment, order or decree of
any government, governmental instrumentality or court having jurisdiction over UCSD or any of its properties. 
 6.
Indemnification. 
 6.1 PET LLC shall indemnify, hold harmless and defend UCSD and its assigns from and against any
loss, liability, damages or expense (including attorneys’ fees) suffered or incurred by UCSD and/or its assigns as a result of (i) a material breach of any obligation, representation, warranty, covenant or agreement made by PET LLC in this
Agreement, or because any material representation or warranty by PET LLC contained herein shall be false; and (ii) cost and expenses (including reasonable attorneys’ fees) incurred by UCSD in connection with any claim, action, suit,
proceeding, demand, assessment or judgment incident to any of the foregoing. PET 

  

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LLC shall reimburse UCSD within thirty (30) days of UCSD’s written request (which request shall include reasonable supporting documentation for
such reimbursement) for reimbursement of any and all amounts actually paid by UCSD on account of such obligations, losses, liabilities, damages or expenses. 
 6.2 UCSD shall indemnify, hold harmless and defend PET LLC and its assigns from and against any loss, liability, damages or expense
(including attorneys’ fees) suffered or incurred by PET LLC and its assigns as a result of (i) a material breach of any obligation, representation, warranty, covenant or agreement made by UCSD in this Agreement, or because any material
representation or warranty by UCSD contained herein shall be false; and (ii) cost and expenses (including reasonable attorneys’ fees) incurred by PET LLC in connection with any action, suit, proceeding, demand, assessment or judgment
incident to any of the foregoing. UCSD shall reimburse PET LLC within thirty (30) days of PET LLC’s written request (which request shall include reasonable supporting documentation for such reimbursement) for reimbursement of any and all
amounts actually paid by PET LLC on account of such obligations, losses, liabilities, damages or expenses. 
 7. Entire
Agreement; Severability; Modification. This instrument contains the entire agreement between the parties relating to the transaction described herein. Any oral representations or modifications concerning this instrument shall be of no force and
effect, excepting a subsequent modification in writing, signed by the party to be charged. Should any term, provision or paragraph of this Agreement be determined to be illegal or void or of no force and effect, the balance of the Agreement shall
survive. This Agreement may be modified, amended or supplemented only by a written instrument duly executed by all the parties hereto. 
 8. Further Assurances; Waiver. Each party hereto will execute, acknowledge and deliver any further assurances, documents and instruments reasonably requested by any other party hereto for the purpose of giving
effect to the transactions contemplated herein or the intentions of the parties with respect thereto. No waiver of any of the provisions of this Agreement shall be deemed, or shall constitute, a waiver of other provisions, whether or not similar,
nor shall any waiver constitute a continuing waiver. No waiver shall be binding unless executed in writing by the party making the waiver. 
 9. Investigations and Survival. The respective representations, warranties, covenants and agreements of PET LLC and UCSD herein, or in any certificates or other documents delivered prior to or at the Closing,
shall not be deemed waived or otherwise affected by any investigation made by any party hereto nor shall they be affected by the Closing. 
 10. Binding Effect. This Agreement shall bind and inure to the benefit of the respective heirs, personal representatives, successors, and assigns of the parties hereto, except as hereinabove expressly provided.

  

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 11. Applicable Law. This Agreement shall be governed by and construed in
accordance with the laws of State of California. Any legal proceeding relating to the Agreement shall be instituted and maintained exclusively in any court of competent jurisdiction in San Diego County, California. 
 12. Construction. In the interpretation and construction of this Agreement, the parties acknowledge that the terms hereof reflect
extensive negotiations between the parties and that this Agreement shall not be deemed, for the purpose of construction and interpretation, that both parties drafted this Agreement. 
 13. Counterparts; Facsimile Signatures. This Agreement may be signed in counterparts and delivered by facsimile signature.

 [Remainder of Page Intentionally Left Blank] 
  

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 IN WITNESS WHEREOF, the parties hereto have executed this Asset Purchase Agreement the day and year first
above written. 
  

											
	UCSD:	 		 	PET LLC:
			
	 The Regents of the University of California
	 		 	Molecular Imaging Sorrento Valley LLC, a Delaware limited liability company
					
		 		 		 	 By:     
	 	Molecular Imaging Corporation, a Delaware corporation, its Manager
						
	By:	 	 /s/ David Sakai
	 		 		 	 By:
	 	 /s/ Kenneth C. Frederick

		 	 David I. Sakai
	 		 		 		 	 Kenneth C. Frederick, CEO

		 	 C.F.O Health Services
	 		 		 		 	
			
		 		 	Molecular Imaging Corporation, a Delaware corporation
					
		 		 		 	 By:
	 	 /s/ Kenneth C. Frederick

		 		 		 		 	 Kenneth C. Frederick, CEO

 [Signature Page to UCSD/PET LLC/MIC Asset Purchase Agreement] 
  

 10Voting Agreement

 Exhibit 4.1 
 VOTING AGREEMENT 
 This Voting Agreement, dated as of October 18, 2006 (this
“Agreement”), is by and among Vertical Communications, Inc., a Delaware corporation (“Vertical”), Vodavi Technology, Inc., a Delaware corporation (the “Company”), and LG-Nortel Co. Ltd
(“Stockholder”). 
 W I T N E S S E T H

 WHEREAS, as of the date hereof, Stockholder owns beneficially the number of shares of common stock of the Company set forth opposite
Stockholder’s name on Schedule I hereto (all shares so owned and which may hereafter be acquired by Stockholder prior to the termination of this Agreement, whether upon the exercise of options, conversion of convertible securities,
exercise of warrants or by means of purchase, dividend, distribution or otherwise, being referred to herein with respect to Stockholder as the “Stockholder Shares”); and 
 WHEREAS, contemporaneously with the execution and delivery of this Agreement, the Company is entering into an Agreement and Plan of Merger, dated as of
the date hereof (as such agreement may hereafter be amended from time to time, the “Merger Agreement”), along with Vertical, and Vertical Acquisition Sub Inc., a Delaware corporation and a wholly owned subsidiary of Vertical
(“Sub”), which provides for, upon the terms and subject to the conditions set forth therein, the merger of Sub with and into the Company (the “Merger”); and 
 WHEREAS, pursuant to the Merger Agreement, the Company has agreed to call a special meeting of its stockholders for the purpose of (the
“Proposal”); and 
 WHEREAS, in consideration of Vertical entering into the Merger Agreement and incurring certain related
fees and expenses relating to the Merger, Stockholder has agreed to enter into this Agreement; and 
 WHEREAS, Vodavi is a party to this
Agreement for the purpose of facilitating certain continuing relationships between Stockholder and Vertical following the Effective Time. 
 NOW, THEREFORE, in consideration of the foregoing and the mutual covenants and agreements herein contained, and intending to be legally bound hereby, the Company, Vertical and Stockholder hereby agree as follows: 
 ARTICLE I. 
 VOTING OF SHARES; AND OTHER
COVENANTS OF STOCKHOLDER AND VERTICAL 
 SECTION 1.1. Voting of Shares. From the date hereof until termination of this Agreement
pursuant to Section 3.2 hereof (the “Term”), at any meeting of the stockholders of the Company called to vote on the Proposal or at any adjournment or postponement thereof, and in any action by consent of the stockholders of
the Company with respect to which approval of the Proposal is sought, Stockholder shall (A) appear at such meeting or otherwise cause its Stockholder Shares to be counted as present thereat for purposes of establishing a quorum and 

 
(B) vote (or cause to be voted) its Stockholder Shares in favor of the Proposal and such other matters as may be necessary or advisable to consummate the
transactions contemplated by the Merger Agreement. 
 SECTION 1.2. No Inconsistent Arrangements. Except as contemplated by this
Agreement, Stockholder shall not during the Term (i) grant any proxy, power-of-attorney or other authorization in or with respect to its Stockholder Shares which is inconsistent with the terms hereof, (ii) deposit its Stockholder Shares
into a voting trust or enter into a voting agreement or arrangement with respect to its Stockholder Shares, (iii) sell, transfer, pledge or encumber, assign or otherwise dispose of or enforce or permit the execution of the provisions of any
redemption, share purchase or sale, recapitalization or other agreement with the Company or enter into any contract, option or other arrangement or understanding with respect to the offer for sale, sale, transfer, pledge, encumbrance, assignment or
other disposition of any of the Stockholder Shares except to a person who agrees in writing to be bound by the terms and conditions of this Agreement as a Stockholder or (iv) take any other action that would in any way restrict, limit or
interfere with the performance of its obligations hereunder or the transactions contemplated hereby or by the Merger Agreement. 
 SECTION
1.3. Disclosure. Stockholder hereby authorizes Vertical and/or the Company to publish and disclose in any filing with the SEC, including any proxy statement relating to the approval of the Merger Agreement by the Company’s stockholders
(including all exhibits and schedules filed with the SEC), its identity and ownership of its Stockholder Shares and the nature of its commitments, arrangements and understandings under this Agreement. 
 SECTION 1.4. Continuing Business Relationships. In consideration of Stockholder’s compliance with its obligations contained in
Section 1.1, Vertical agrees that during the Term and continuing for a two-year period following the Term: (a) Vertical shall continue to support Stockholder’s product line consistent with the historic relationship between the Company
and Stockholder; and (b) Vertical will distribute, on a non-exclusive basis, certain LG-Nortel products in fulfilling purchase orders for Nortel and supporting the LG-Nortel products sold by Nortel in North America on mutually acceptable terms;
and (c) for the purpose of facilitating the transition following the Effective Time, prior to the Effective Time, Vertical shall enter into arrangements whereby Vodavi’s current chief executive officer and chief financial officer agree to
cooperate with transitional services related to Stockholder’s relationship with the Company for a term of no less than nine months from the Effective Time. 
 ARTICLE II. 
 REPRESENTATIONS AND WARRANTIES OF STOCKHOLDER 
 Stockholder hereby represents and warrants as follows: 
 SECTION 2.1. Authority. Stockholder has all requisite power and authority to execute, deliver and perform this Agreement and to consummate the transactions contemplated hereby. The execution, delivery and
performance of this Agreement and the consummation of the transactions contemplated hereby have been duly authorized by all necessary action on the part of Stockholder. This Agreement has been duly executed and delivered by or on behalf of 

  

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Stockholder and constitutes a legal, valid and binding obligation of Stockholder, enforceable against Stockholder in accordance with its terms, except as
enforcement may be limited by bankruptcy, insolvency, moratorium or other similar laws and except that the availability of equitable remedies, including specific performance, is subject to the discretion of the court before which any proceeding for
such remedy may be brought. 
 SECTION 2.2. Required Filings and Consents. The execution and delivery of this Agreement by Stockholder
does not, and the performance of this Agreement by Stockholder will not, require any consent, approval, authorization or permit of, or filing with or notification to, any governmental or regulatory authority (other than any necessary filing under
the Exchange Act), domestic or foreign, except where the failure to obtain such consents, approvals, authorizations or permits, or to make such filings or notifications, would not prevent or delay the performance by Stockholder of Stockholder’s
obligations under this Agreement. 
 SECTION 2.3. Ownership of Shares. Stockholder is the record and beneficial owner of the Shares
set forth opposite its name on Schedule I hereto. On the date hereof, such Shares constitute all of the Shares owned of record or beneficially by Stockholder. 
 SECTION 2.4. Stockholder understands and acknowledges that Vertical is entering into the Merger Agreement in reliance upon Stockholder’s execution and delivery of this Agreement. 
 ARTICLE III. 
 MISCELLANEOUS 
 SECTION 3.1. Definitions. Terms used but not otherwise defined in this Agreement have the meanings ascribed to such terms in the Merger Agreement.

 SECTION 3.2. Termination. This Agreement shall terminate and be of no further force and effect (i) by the written mutual
consent of all of the parties hereto, (ii) upon the approval of the Proposal by the Company’s stockholders at a meeting duly called and held for such purpose at which a quorum was present and acting throughout, or (iii) automatically
and without any required action of the parties hereto upon termination of the Merger Agreement in accordance with its terms. The obligations of Vertical pursuant to Section 1.4 shall survive for a two-year period following termination of this
Agreement. No such termination of this Agreement shall relieve any party hereto from any liability for any breach of this Agreement prior to termination. 
 SECTION 3.3. Further Assurance. From time to time, at another party’s request and without consideration, each party hereto shall execute and deliver such additional documents and take all such further
action as may be necessary or desirable to consummate and make effective, in the most expeditious manner practicable, the transactions contemplated by this Agreement. 
 SECTION 3.4. No Waiver. The failure of any party hereto to exercise any right, power or remedy provided under this Agreement or otherwise available in respect hereof at law or in equity, or to insist upon
compliance by any other party hereto with its obligations 

  

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hereunder, or any custom or practice of the parties at variance with the terms hereof shall not constitute a waiver by such party of its right to exercise
any such right, power or remedy or to demand such compliance. 
 SECTION 3.5. Specific Performance. Stockholder acknowledges that if
Stockholder fails to perform any of its obligations under this Agreement, immediate and irreparable harm or injury would be caused to the Company for which money damages would not be an adequate remedy. In such event, Stockholder agrees that the
Company shall have the right, in addition to any other rights it may have, to specific performance of this Agreement. Accordingly, should the Company institute an action or proceeding seeking specific enforcement of the provisions hereof,
Stockholder hereby waives the claim or defense that the Company has an adequate remedy at law and hereby agrees not to assert in any such action or proceeding the claim or defense that such a remedy at law exists. 
 SECTION 3.6. Notice. All notices and other communications given or made pursuant hereto shall be in writing and shall be deemed to have been duly
given or made (i) as of the date delivered or sent by facsimile if delivered personally or by facsimile, and (ii) on the third business day after deposit in the U.S. mail, if mailed by registered or certified mail (postage prepaid, return
receipt requested), in each case to the parties at the following addresses (or at such other address for a party as shall be specified by like notice, except that notices of changes of address shall be effective upon receipt): 
 (a) If to Vertical or the Company: 
      Vertical Communications, Inc. 
      One Memorial Drive 
      Cambridge, Massachusetts 02142 
      Attn: William Y. Tauscher 
      With a copy to:

 (b) If to Stockholder, at the address set forth below Stockholder’s name on Schedule I hereto. 
 SECTION 3.7. Expenses. All fees, costs and expenses incurred in connection with this Agreement and the transactions contemplated hereby shall be
paid by the Company, including, without limitation, the fees, costs and expenses incurred by Stockholder. 
 SECTION 3.8.
Headings. The headings contained in this Agreement are for reference purposes only and shall not affect in any way the meaning or interpretation of this Agreement. 
 SECTION 3.9. Severability. If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any rule of 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 

  

 -4- 

 
in any manner adverse to any party. Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the parties
hereto 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 transactions contemplated hereby are fulfilled to the maximum extent
possible. 
 SECTION 3.10. Entire Agreement; Third-Party Beneficiaries. This Agreement constitutes the entire agreement and supersedes
any and all other prior agreements and undertakings, both written and oral, among the parties, or any of them, with respect to the subject matter hereof, and this Agreement is not intended to confer upon any other person any rights or remedies
hereunder. 
 SECTION 3.11. Assignment. Neither this Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise. 
 SECTION 3.12. Governing Law; Consent to Jurisdiction; Waiver
of Jury Trial. This Agreement shall be governed by, and construed in accordance with, the internal laws of the State of Delaware without regard to the choice of law principles thereof. Each of the parties hereto irrevocably submits to the
exclusive jurisdiction of the courts of the State of Delaware located in New Castle County and the United States District Court for the District of Delaware for the purpose of any suit, action, proceeding or judgment relating to or arising out of
this Agreement and the transactions contemplated hereby. Service of process in connection with any such suit, action or proceeding may be served on each party hereto anywhere in the world by the same methods as are specified for the giving of
notices under this Agreement. Each of the parties hereto irrevocably consents to the jurisdiction of any such court in any such suit, action or proceeding and to the laying of venue in such court. Each party hereto irrevocably waives any objection
to the laying of venue of any such suit, action or proceeding brought in such courts and irrevocably waives any claim that any such suit, action or proceeding brought in any such court has been brought in an inconvenient forum. EACH OF THE
PARTIES HERETO WAIVES ANY RIGHT TO REQUEST A TRIAL BY JURY IN ANY LITIGATION WITH RESPECT TO THIS AGREEMENT AND REPRESENTS THAT COUNSEL HAS BEEN CONSULTED SPECIFICALLY AS TO THIS WAIVER. 
 SECTION 3.13. Amendment. This Agreement may not be amended except by an instrument in writing signed on behalf of the Company, Vertical and
Stockholder. 
 SECTION 3.14. Waiver. Any agreement on the part of a party hereto to any extension of time for the performance of any
of the obligations or other acts of the other parties hereto or waiver of any inaccuracies in the representations and warranties of the other parties hereto contained herein or in any document delivered pursuant hereto or compliance by the other
parties hereto with any of their agreements or conditions contained herein shall be valid only as against such party and only if set forth in an instrument in writing signed by such party. The failure of any party hereto to assert any of its rights
under this Agreement or otherwise shall not constitute a waiver of those rights. 
  

 -5- 

 SECTION 3.15. Descriptive Headings; Interpretation. The descriptive headings herein are inserted
for convenience of reference only and are not intended to be part of or to affect the meaning or interpretation of this Agreement. 
 SECTION
3.16. Counterparts. This Agreement may be executed (including by facsimile transmission) in one or more counterparts, and by the different parties hereto in separate counterparts, each of which when executed shall be deemed to be an original
but all of which shall constitute one and the same agreement. 
 [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK] 
  

 -6- 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed as of the date first
written above. 
  

					
	VERTICAL COMMUNICATIONS, INC.
		
	By:	 	/s/ KEN CLINEBELL
		 	Name:	 	Ken Clinebell
		 	Title:	 	CFO
	
	VODAVI TECHNOLOGY, INC.
		
	By:	 	/s/ GREGORY K. ROEPER
		 	Name:	 	Gregory K. Roeper
		 	Title:	 	Chief Executive Officer
	
	 STOCKHOLDER
  
 LG-NORTEL CO. LTD

		
	By:	 	/s/ PETER DANS
		 	Name:	 	Peter Dans
		 	Title:	 	Chief Financial Officer

 Schedule I 
  

			
	 Name and Address of Stockholder
	  	 Number of Shares
 Beneficially Owned

	 LG-Nortel Co. Ltd
 G5 Tower (7th Floor)
 679 Yoksam-dong
 Kangnam-gu, Seoul
 135-985, Korea
 Attention: Peter Dans, CFO
	  	862,500

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