Ninth Amendment to Credit and Security Agreements, dated as of March 30, 2018, by and among DASAN Zhone Solutions, Inc., ZTI Merger Subsidiary III, Inc., DASAN Network Solutions, Inc., Premisys Communications, Inc., Zhone Technologies International, Inc., Paradyne Networks, Inc., Paradyne Corporation and Wells Fargo Bank, National Association

THIS NINTH AMENDMENT TO CREDIT AND SECURITY AGREEMENTS (the “Amendment”), dated as of March 30, 2018, is entered into by and among DASAN ZHONE SOLUTIONS, INC., a Delaware corporation (“DZS”), ZTI MERGER SUBSIDIARY III, INC., a Delaware corporation (“ZTI”; DZS and ZTI are sometimes referred to herein individually as a “Borrower” and collectively as the “Borrowers”), DASAN NETWORK SOLUTIONS, INC., a California corporation (“DNS”), PREMISYS COMMUNICATIONS, INC., a Delaware corporation (“Premisys”), ZHONE TECHNOLOGIES INTERNATIONAL, INC., a Delaware corporation, (“Zhone International”), PARADYNE NETWORKS, INC., a Delaware corporation (“Paradyne Networks”), PARADYNE CORPORATION, a Delaware corporation (“Paradyne Corporation”; DNS, Premisys, Zhone International, Paradyne Networks, and Paradyne Corporation are sometimes referred to herein individually as a “Guarantor” and collectively as the “Guarantors”), and WELLS FARGO BANK, NATIONAL ASSOCIATION (“Lender”).

A.    Borrowers, Guarantors, and Lender are parties to (i) a Credit and Security Agreement, dated March 13, 2012 (as amended by that certain First Amendment to Credit and Security Agreements, dated as of March 13, 2013 (the “First Amendment”), that certain Second Amendment to Credit and Security Agreements, dated September 30, 2013 (the “Second Amendment”), that certain Third Amendment to Credit and Security Agreements, dated March 5, 2014 (the “Third Amendment”), that certain Fourth Amendment to Credit and Security Agreements, dated March 6, 2015 (the “Fourth Amendment”), that certain Fifth Amendment to Credit and Security Agreement, dated March 23, 2016 (the “Fifth Amendment”), that certain Sixth Amendment to Credit and Security Agreements and Consent, dated September 9, 2016 (the “Sixth Amendment”), that certain Joinder and Seventh Amendment to Credit and Security Agreements, dated October 7, 2016 (the “Seventh Amendment”), and that certain Eighth Amendment to Credit and Security Agreements, dated March 19, 2018 (the “Eighth Amendment”), and as further amended from time to time, the “Domestic Credit Agreement”), and (ii) a Credit and Security Agreement (Ex-Im Subfacility), dated March 13, 2012 (as amended by the First Amendment, the Second Amendment, the Third Amendment, the Fourth Amendment, the Fifth Amendment, the Sixth Amendment, the Seventh Amendment, and the Eight Amendment, and as further amended from time to time, the “Ex-Im Credit Agreement”; and together with the Domestic Credit Agreement, collectively, the “Credit Agreements”). Capitalized terms used in this Amendment have the meanings given to them in the Credit Agreements unless otherwise specified in this Amendment.

B.    Lender and Borrowers wish to further amend the Credit Agreements on the terms and conditions set forth herein.

C.    Borrowers and Guarantors are entering into this Amendment with the understanding and agreement that, except as specifically provided herein, none of the Lender’s rights and remedies as set forth in the Credit Agreements or any other Loan Document is being waived or modified by the terms of this Amendment.

NOW, THEREFORE, in consideration of the premises and of the mutual covenants and agreements herein contained, it is agreed as follows:

1.Amendments to Credit Agreements. The Credit Agreements are amended as follows:

1.1    Section 2.9 of the Credit Agreements. The Maturity Date that appears in Section 2.9 of the Credit Agreements is hereby changed from “March 31, 2019” to “July 15, 2019”.

1.2    Section 2.13(b) of the Ex-Im Credit Agreement. Clause (ii) of Section 2.13(b) of the Ex-Im Credit Agreement is amended to read in its entirety as follows:

“(ii)    $10,000,000.”

1.3    Definition of “Maximum Revolver Amount” under Ex-Im Credit Agreement. The definition of “Maximum Revolver Amount” that appears in Schedule 1.1 to the Ex-Im Credit Agreement is hereby amended to read in its entirety as follows:

““Maximum Revolver Amount” means $10,000,000; provided that such amount may be decreased by permanent reductions in such amount made in accordance with Section 2.11 of this Agreement.”

1.4    Schedule 2.12 to Ex-Im Credit Agreement. The third row of Schedule 2.12 to the Ex-Im Credit Agreement is amended to read in its entirety as follows:

“(a) Ex-Im Fee. On March 30, 2018, an Ex-Im Fee equal to $126,350. Such fee when paid shall be deemed fully earned and non-refundable as of such payment date under all circumstances.”

2.    No Other Changes. Except as explicitly amended by this Amendment or the other Loan Documents delivered in connection with this Amendment, all of the terms and conditions of the Credit Agreements and the other Loan Documents shall remain in full force and effect and shall apply to any advance or letter of credit thereunder. This Amendment shall be deemed to be a “Loan Document” (as defined in the Credit Agreements).

3.    Amendment Fee. In consideration of the agreements set forth herein, Borrower hereby agrees to pay to the Lender an amendment fee in the amount of $7,500 (the “Amendment Fee”), which fee is non-refundable when paid and is fully-earned as of the date of this Amendment. The Amendment Fee shall be paid in full on the date of this Amendment.

4.    Conditions Precedent. This Amendment shall be effective when Lender shall have received a duly executed original of this Amendment, together with each of the following, each in substance and form acceptable to Lender in its sole discretion and duly executed by all relevant parties:

4.1    Copies of board of directors’ (or equivalent) approval of this Amendment for each of the Borrowers and Guarantors;

4.2    The Amendment Fee, which Lender may arrange to be paid as a charge to the Loan Account; and

4.3    The representations and warranties set forth in this Amendment must be true and correct.

5.    Post-Amendment Covenant. The obligation of Lender to continue to make Advances (or otherwise extend credit under the Credit Agreements) is subject to the satisfaction of the following covenants, and the failure by Borrowers to so perform or cause to be performed the following as and when required, unless extended or otherwise waived in writing by Lender (in Lender’s sole discretion), shall constitute an Event of Default:

5.1    No later than April 15, 2018, Borrowers and Guarantors shall provide to Lender the following completed and executed (as necessary) forms from the Export-Import Bank of the United States: (i) Export-Import Bank of the United States Joint Application for Export Working Capital Guarantee; and (ii) Ex-Im Borrower Agreement.

6.    Representations and Warranties. Borrowers and Guarantors hereby represent and warrant to Lender as follows:

6.1    Borrowers and Guarantors have all requisite power and authority to execute this Amendment and any other agreements or instruments required hereunder and to perform all of their obligations hereunder, and this Amendment and all such other agreements and instruments have been duly executed and delivered by Borrowers and Guarantors and constitute the legal, valid and binding obligation of Borrowers and Guarantors, enforceable against Borrowers and Guarantors in accordance with its terms, except as enforcement may be limited by equitable principles or by bankruptcy, insolvency, reorganization, moratorium or similar laws relating to or limiting creditors’ rights generally.

6.2    The execution, delivery and performance by Borrowers and Guarantors of this Amendment and any other agreements or instruments required hereunder have been duly authorized by all necessary corporate action on the part of Borrowers and Guarantors and do not (i) require any authorization, consent or approval by any governmental department, commission, board, bureau, agency or instrumentality, domestic or foreign, other than authorizations, consents or approvals that have been obtained and are in full force and effect, (ii) violate any material provision of any law, rule or regulation or of any order, writ, injunction or decree presently in effect, having applicability to Borrowers or Guarantors, or the certificates of incorporation or by-laws of Borrowers or Guarantors, or (iii) result in a breach of or constitute a default under any indenture or loan or credit agreement or any other Material Contract to which Borrowers or Guarantors are a party or by which Borrowers and Guarantors or their respective properties may be bound or affected, except to the extent that any such breach or default could not individually or in the aggregate reasonably be expected to cause a Material Adverse Change.

6.3    All of the representations and warranties contained in Section 5 and Exhibit D of the Credit Agreements are true and correct in all material respects on and as of the date hereof as though made on and as of such date, except to the extent that such representations and warranties

relate solely to an earlier date (in which case such representations and warranties continue to be true and correct in all material respects as of such earlier date).

7.    References. All references in the Credit Agreements to “this Agreement” shall be deemed to refer to the Credit Agreements as amended hereby; and any and all references in the other Loan Documents to the Credit Agreements shall be deemed to refer to the Credit Agreements as amended hereby.

8.    No Waiver. The execution of this Amendment and the acceptance of all other agreements and instruments related hereto shall not be deemed to be a waiver of any Default or Event of Default under the Credit Agreements or a waiver of any breach, default or event of default under any Loan Document or other document held by Lender, whether or not known to Lender and whether or not existing on the date of this Amendment.

9.    Release. Borrowers and Guarantors hereby absolutely and unconditionally release and forever discharge Lender, and any and all participants, parent corporations, subsidiary corporations, affiliated corporations, insurers, indemnitors, successors and assigns thereof, together with all of the present and former directors, officers, agents, attorneys, and employees of any of the foregoing, from any and all claims, demands or causes of action of any kind, nature or description, whether arising in law or equity or upon contract or tort or under any state or federal law or otherwise, which Borrowers or Guarantors have had, now have or have made claim to have against any such person for or by reason of any act, omission, matter, cause or thing whatsoever arising from the beginning of time to and including the date of this Amendment, whether such claims, demands and causes of action are matured or unmatured or known or unknown. It is the intention of the Borrowers and Guarantors in executing this release that the same shall be effective as a bar to each and every claim, demand and cause of action specified and in furtherance of this intention each of the Borrowers and Guarantors waives and relinquishes all rights and benefits under Section 1542 of the Civil Code of the State of California, which provides:

“A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM OR HER MIGHT HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR.”

The parties acknowledge that each may hereafter discover facts different from or in addition to those now known or believed to be true with respect to such claims, demands, or causes of action and agree that this instrument shall be and remain effective in all respects notwithstanding any such differences or additional facts.

10.    Costs and Expenses. Borrowers agree to pay all reasonable out-of-pocket fees and disbursements of counsel to Lender for the services performed by such counsel in connection with the preparation of this Amendment and the documents and instruments incidental hereto. Borrowers hereby agree that Lender may, at any time or from time to time in its sole discretion

and without further authorization by Borrowers, make a loan to Borrowers under the Credit Agreements, or apply the proceeds of any loan, for the purpose of paying any such reasonable out-of-pocket fees, disbursements, costs and expenses.

11.    Miscellaneous. This Amendment may be executed in any number of counterparts, each of which when so executed and delivered shall be deemed an original and all of which counterparts, taken together, shall constitute one and the same instrument. Transmission by facsimile or “pdf” file of an executed counterpart of this Amendment shall be deemed to constitute due and sufficient delivery of such counterpart. Any party hereto may request an original counterpart of any party delivering such electronic counterpart. This Amendment and the rights and obligations of the parties hereto shall be construed in accordance with, and governed by, the laws of the State of California. In the event of any conflict between this Amendment and the Credit Agreements, the terms of this Amendment shall govern.

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

BORROWERS:

By: /s/ Michael Golomb
Name: Michael Golomb
Title:     Chief Financial Officer

By: /s/ Michael Golomb
Name: Michael Golomb
Title:     Chief Financial Officer

By: /s/ Michael Golomb
Name: Michael Golomb
Title:     Chief Financial Officer

By: /s/ Michael Golomb
Name: Michael Golomb
Title:     Chief Financial Officer

By: /s/ Michael Golomb
Name: Michael Golomb
Title:     Chief Financial Officer

By: /s/ Michael Golomb
Name: Michael Golomb
Title:     Chief Financial Officer

By: /s/ Michael Golomb
Name: Michael Golomb
Title:     Chief Financial Officer

LENDER:

WELLS FARGO BANK, NATIONAL ASSOCIATION

By: /s/ Harry L. Joe
Name: Harry L. Joe
Title: Authorized Signatory