EXHIBIT 2.3 FINAL SIGNATURE COPY PARTNERSHIP INTEREST OPTION AGREEMENT This PARTNERSHIP INTEREST OPTION AGREEMENT (this "Agreement") is made --------- as of May 3, 1996, by and among AVERY COMMUNICATIONS, a Delaware corporation ("ACI"), AVERY ACQUISITION SUB, INC., a Texas corporation ("Merger Sub"), and --- ---------- HAROLD D. BOX and DAVID W. MECHLER (collectively, "Partners"). -------- RECITALS A. Contemporaneously herewith, ACI, Merger Sub and Home Owners Long Distance Incorporated, a Texas corporation ("HOLD"), the Partners and others are ---- entering into an Agreement and Plan of Merger (the "HOLD Merger Agreement") ----------------------- pursuant to which, subject to the terms and conditions set forth therein, Merger Sub will merge with and into HOLD, and HOLD will become a wholly owned subsidiary of ACI. B. Contemporaneously herewith, ACI, Merger Sub, Hold Billing Services, Ltd., a Texas limited partnership ("Billing" or the "Partnership"), Hold Billing ------- ----------- & Collection, L.C., a Texas limited liability company and the general partner of Billing, the Partners and the other limited partners of the Partnership are entering into a Partnership Interest Purchase Agreement (the "Partnership ----------- Interest Purchase Agreement") pursuant to which, subject to the terms and - ----------------------------- conditions set forth therein, Merger Sub will buy 54% of the Partnership Interest of the Partnership. As used herein, the term "Partnership Interest" --------------------- means all of a Partner's interest in the Partnership, including, without limitation, (i) the right to receive distributions of the assets of the Partnership, (ii) the right to receive allocations of income, gain, loss, deduction, or credit of the Partnership, (iii) the right, if any, to participate in the affairs of the Partnership pursuant to the Limited Partnership Agreement of Hold Billing Services, Ltd. effective May 13, 1994 (the "Partnership ----------- Agreement") or the Texas Revised Limited Partnership Act ("TRLPA"), (v) the - --------- ----- right to any and all benefits to which a Partner is entitled under the Partnership Agreement or TRLPA, and (v) the obligations to comply with the Partnership Agreement; and the term "Partner's Rights" means all of a Partner's ---------------- right, title, and interest in, to, and under the Partnership Interest. C. The Partners own an aggregate of 46% of the Partnership Interests of the Partnership. Subject only to the limitations and exclusions contained in this Agreement, and on the terms and conditions hereinafter set forth, each of the Partners desires to grant to Merger Sub an option to purchase all of Partner's Partnership Interest and Partner's Rights in the Partnership Interest upon the terms, and subject to the conditions, herein set forth. NOW, THEREFORE, in consideration of the recitals and of the respective covenants, representations, warranties and agreements herein contained, and intending to be legally bound hereby, the parties hereto hereby agree as follows: FINAL SIGNATURE COPY ARTICLE 1 OPTIONS SECTION 1.1 GRANT OF OPTION TO PURCHASE PARTNERSHIP INTEREST. Subject to the terms and conditions of this Agreement, Partners hereby grant to ACI an option (the "Option") to purchase from Partners all of Partners' Partnership ------ Interest and the Partners' Rights in the Partnership Interest, free and clear of any and all (i) liens, (ii) security interests, (iii) pledges, (iv) mortgages, (v) deeds of trust, (vi) charges, (vi) claims, (vii) conditional sales agreements, (viii) rights of assignment, (ix) rights to purchase, (x) rights of first offer or refusal, (xi) options, (xii) warrants, (xiii) other rights of third parties of any type, description or nature whatsoever, or (xiv) other encumbrances of any type, description or nature whatsoever (collectively, "Liens"). ----- SECTION 1.2 CONSIDERATION FOR OPTION. In consideration for the grant of the Option, ACI shall pay to the Partners the sum of $10.00 (the "Option ------ Price,"). - ----- SECTION 1.3. EXERCISE PRICE. If ACI exercises the Option during the Option Term (as hereinafter defined), the exercise price (the "Exercise Price") -------------- shall be the Partnership Interest Value. As used herein, "Partnership Interest --------------------- Value" shall mean the value of the Partners Partnership Interest, determined by - ----- a nationally recognized investment banking firm (the "Initial Banker"), to be -------------- mutually agreed upon by the Partners and ACI (or if the Partners and ACI are unable to agree, the New York office of Merrill Lynch & Co.), in light of such investment banking firm's evaluation of Billing's current earnings as of the date the Option Exercise Notice (as hereinafter defined) and such other similar matters that such investment banking firm shall deem relevant less the aggregate amount of distributions received by the either Partner that was not made pro rata to all the limited and general partners of the Partnership; provided, -------- however, such investment banker shall not consider the following factors in - ------- determining the Partnership Interest Value: (i) minority interest discounts or controlling interest premiums; (ii) fees or overhead paid to or allocated from ACI; or (iii) amortization of intangibles resulting from acquisitions. Upon ACI's receipt of the Initial Banker's determination of the Partnership Interest Value, it shall promptly notify the Partners of such determination and the assumptions and methodology utilized in arriving at such determination and provide the written opinion of the Initial Banker as to its determination. If within 30 Business Days of receipt of such determination, the Partners shall not object thereto, ACI will consummate the exercise of the Option. If within such 30-day period the Partners shall object in writing to such determination, the Partners may appoint, at its sole cost and expense, a nationally recognized investment banking firm (the "Partners' Banker") to ----------------- undertake separately the evaluation prescribed above. Not later than 60 days following its written notice to ACI of its objection to the Initial Banker's determination, the Partners shall provide ACI with the Partners' Banker's determination, including the assumptions and methodology utilized in arriving at such determination and provide the written opinion of the Partners' Banker as to its determination. If the Partners do not provide ACI with these materials -2- FINAL SIGNATURE COPY within the 60-day period prescribed above, ACI shall be entitled to consummate the exercise of its option pursuant hereto. The fees and expenses of the Initial Banker shall be borne by ACI. The time limits herein may be extended by the parties to provide the investment bankers such additional time as they may request. If within 30 days of the delivery of the determination of the Partners' Banker, the Partners' Banker and the Initial Banker are unable to resolve their differing determinations and arrive at an agreed upon value, then a third nationally recognized investment banking firm, selected by the agreement of the Initial Banker and the Partners' Banker, shall undertake to make the determinations prescribed above. Such investment banker's determination as to the Partnership Interest Value shall be delivered to ACI and the Partners along with the assumptions and methodology utilized in arriving at such determination as well as the written opinion of such investment banker as to its determination. At such time, the Partnership Interest Value shall be deemed to be the simple average of the two closest determinations by the three investment bankers, which determination shall be final and binding upon ACI and the Partners. The fees and expenses of such third investment banker shall be borne equally by ACI, on the one hand, and the Partners, on the other hand, and shall be paid in advance of the performance of such service. SECTION 1.4 PAYMENTS. The Exercise Price may be paid in (i) cash, (ii) shares of ACI common stock, par value $.01 per share ("ACI Common Stock") or ------------------ (iii) any combination of cash and shares of ACI Common Stock as ACI, in its sole discretion, determines; provided however, ACI shall pay sufficient consideration ---------------- in cash to permit the Partners to pay applicable federal income tax (if any) that is payable as a result of the exercise of the Option. If the Exercise Price is paid, in whole or in part, with shares of ACI Common Stock, the value of ACI Common Stock shall be its Current Market Value. As used herein, the term "Current Market Value" means, if on such date ACI Common Stock is listed or ---------------------- admitted to trading on any national securities exchange or quoted on the Nasdaq Stock Market ("NASDAQ") or otherwise traded in the over-the-counter market in ------ the United States, the mean average closing price for the 50 consecutive days before the fifth business day preceding the Closing Date; or if on such date ACI Common Stock is not listed or admitted to trading on any national securities exchange or quoted on the NASDAQ or otherwise traded in the over-the-counter market in the United States, the amount that a willing buyer would pay a willing seller in an arm's length transaction on such date (neither being under any compulsion to buy or sell) for such security as determined on the same basis as the Exercise Prices is determined under Section 1.3. The Partners shall have registration rights with respect to the ACI Common Stock by becoming parties to that Registration Rights Agreement attached as Exhibit B to the HOLD Merger Agreement; provided however, the piggy back registration rights of the Partners ---------------- shall be effective at the date of the Exercise Option Notice and shall expire on the earlier of (i) three years from the Option Closing Date (as hereinafter defined) and (ii) the date on which any Holder (as defined in the Registration Rights Agreement) may sell shares of Registrable Stock (as defined in the Registration Rights Agreement) under section k of Rule 144, promulgated under the Securities Act of 1933, (or any successor provision). -3- FINAL SIGNATURE COPY SECTION 1.5 EXERCISE OF OPTION;TERM. The Option shall become fully exercisable on the second anniversary of the closing of the merger of ACI with and into HOLD and shall remain fully exercisable for a period of two years thereafter (the "Option Term"). ACI may exercise the Option in whole, but not in ----------- part, at any time before the expiration of the Option Term by giving written notice of exercise (the "Option Exercise Notice") to the Partners. ---------------------- SECTION 1.6 OFFER TO PURCHASE OF MERGER SUB'S PARTNERSHIP INTEREST. If ACI does not exercise the Option during the Option Term, the Partners may offer (the "Offer") to purchase Merger Sub's Partnership Interest and its rights in ----- its Partnership Interest by giving written notice of the Offer to Merger Sub within 120 days after the expiration of the Option Term. Such notice shall contain the purchase price (the "Offer Price") and the other terms and ------------ conditions of the Offer, together with such information or documentation as is reasonably satisfactory to ACI to demonstrate the financial capacity of the Partners to consummate the purchase of the Partnership Interest. Merger Sub may, in its sole discretion, accept or reject the Offer. SECTION 1.7 SECOND OPTION. If Merger Sub rejects the Offer, ACI shall purchase all of the Partners' Partnership Interest and Partners Rights in the Partnership Interest on the same terms and conditions as contained in the Offer, except the Offer Price for the Partners' Partnership Interest and Partners Rights in the Partnership Interest of the Partners shall be reduced pro rata to reflect the aggregate Partnership Interest then owned by the Partners. The Offer Price shall be payable upon the same terms and conditions as set forth in Section 1.4. ARTICLE 2 CLOSING SECTION 2.1 CLOSING UPON EXERCISE OF OPTION. The exercise of the Option (the "Closing") shall take place (i) at the offices of Winstead Sechrest & ------- Minick P.C., 5400 Renaissance Tower, Dallas, Texas, at 10:00 a.m., local time, on the third business day immediately following the day on which the Exercise Price is determined, or (ii) at such other place, time or date and by such means as ACI and Partners may agree. The date on which the Option Closing takes place is referred to herein as the "Closing Date." ------------ SECTION 2.2 FURTHER ASSURANCES. At the Closing, the Partners shall execute and deliver to ACI all such instruments and documents, and take or cause to be taken all such action, as ACI may reasonably request in order to effect the acquisition by ACI of the Partnership Interest upon exercise of the Option or the Second Option, as the case may be, and as contemplated by this Agreement, including instruments or documents deemed necessary or desirable by ACI to effect and evidence the conveyance of the Partners' Partnership Interests and Partners' Rights in the Partnership Interests upon exercise of the Option or the Second Option, as the case may be, by ACI in accordance with the terms of this Agreement. In the event the Partners effect the acquisition of Merger Sub's Partnership Interest as contemplated by this Agreement, Merger Sub shall execute and deliver to the Partners all such instruments and documents, and take or cause -4- FINAL SIGNATURE COPY to be taken all such action, as the Partners may reasonably request in order to effect the acquisition by the Partners of Merger Sub's Partnership Interest. ARTICLE 3 REPRESENTATIONS AND WARRANTIES SECTION 3.1 REPRESENTATIONS AND WARRANTIES OF LIMITED PARTNERS. Each Partner jointly and severally, represent and warrant to ACI and Merger Sub that: 3.1.1 AUTHORITY. Each Partner has all requisite power and authority to enter into this Agreement and to consummate the transactions contemplated hereby. The execution and delivery of this Agreement and the consummation of the transactions contemplated hereby have been duly authorized by all necessary action on the part of each Partner. This Agreement has been duly executed and delivered by each Partner and constitutes a valid and binding obligation of each Partner enforceable in accordance with its terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors' rights and to general equity principles. The execution and delivery of this Agreement does not, and the consummation of the transactions contemplated hereby will not, result in any Violation of any loan or credit agreement, note, mortgage, indenture, lease, employee benefit plan or other agreement, obligation, instrument, permit, concession, franchise, license, judgment, order, decree, statute, law, ordinance, rule or regulation applicable to either Partner or either Partner's properties or assets, which Violation would prohibit, impair or restrict the ability of either Partner to execute and deliver this Agreement, perform in accordance with the terms hereof, or convey the Partnership Interest to Merger Sub upon exercise of the Option or the Second Option as contemplated hereby, or would materially and adversely affect the rights or benefits, or both, hereunder of ACI or Merger Sub. No consent, approval, order or authorization of, or registration, declaration or filing with, any governmental entity is required by or with respect to either Partner in connection with the execution and delivery of this Agreement by either Partner or the consummation by either Partner of the transactions contemplated hereby. 3.1.2 TITLE TO PARTNERSHIP INTEREST. Each Partner represents and warrants, severally and not jointly, and solely on behalf of such Person individually, to Merger Sub and ACI that: (i) Partner owns the Partnership Interest set forth on Schedule 3.1.2 hereto beneficially and of record, free and clear of any and all Liens, and has full power and authority to convey the Partnership Interest, free and clear of any and all Liens, and, upon delivery of the Assignment by Partner conveying its Partnership Interest and payment for such Partnership Interest as herein provided, Merger Sub (or its designee) will acquire good and marketable title thereto, free and clear of any and all Liens; and (ii) Partner's Partnership Interest has been duly and validly issued and Partner has funded (or will fund before the same is past due) all capital contributions and advances to the Partnership that are required by the Partnership Agreement to be funded or advanced prior to the date hereof and the Closing Date. -5- FINAL SIGNATURE COPY 3.1.3 LITIGATION. Except as disclosed in the Partnership Interest Purchase Agreement and the schedules thereto, there is no action, claim, demand, suit, proceeding, arbitration, grievance, citation, summons, subpoena, inquiry or investigation of any nature, civil, criminal, regulatory or otherwise, in law or in equity, pending or threatened against or relating to Billing or against or relating to the transactions contemplated by this Agreement, and the Partners do not know or have reason to be aware of any basis for the same. Except as disclosed in the Partnership Interest Purchase Agreement and the schedules thereto, no citations, fines or penalties have been asserted against Billing under any Environmental Law (as defined in the Partnership Interest Purchase Agreement) or any foreign, federal, state or local law relating to occupational health or safety. 3.1.4 BROKERS AND FINDERS. All negotiations relating to this Agreement and the transactions contemplated hereby have been carried on without the participation of any person acting on behalf of Partners in such manner as to give rise to any valid claim against ACI or Merger Sub for any brokerage or finder's commission, fee or similar compensation. 3.1.5 DISCLOSURE. No representation or warranty by either Partner in this Agreement or by Billing or any Selling Partner (as defined in the Partnership Interest Purchase Agreement) in the Partnership Interest Purchase Agreement or any statement or certificate furnished or to be furnished by or on behalf of Partner, Billing or any Selling Partner to ACI or Merger Sub or their representatives in connection herewith or therewith or pursuant hereto or thereto contains or will contain any untrue statement of a material fact, or omits or will omit to state any material fact required to make the statements contained herein or therein not misleading. There is no fact (other than matters of a general economic or political nature which do not affect the business of Billing uniquely) known to any Partner that has not been disclosed by Billing or any Selling Partner to ACI that might reasonably be expected to have or result in a Material Adverse Effect (as defined in the Partnership Interest Purchase Agreement). SECTION 3.2 REPRESENTATIONS AND WARRANTIES OF MERGER SUB. Merger Sub and ACI, jointly and severally, represent and warrant to the Partners that: 3.2.1 CORPORATE STATUS AND AUTHORIZATION. Merger Sub is a corporation duly organized, validly existing and in good standing, under the laws of the State of Texas, the jurisdiction of its incorporation, with full corporate power and authority to execute and deliver this Agreement, to perform its obligations hereunder and to consummate the transactions contemplated hereby. ACI is a corporation duly organized, validly existing and in good standing under the laws of the State of Delaware, with full corporate power and authority to execute and deliver this Agreement, to perform its obligations hereunder and to consummate the transactions contemplated hereby. The execution and delivery by Merger Sub and ACI of this Agreement, and the consummation of the transactions contemplated hereby, have been, and on the Closing Date, the execution and delivery by the Merger Sub and ACI of the Collateral Agreements will have been, duly authorized -6- FINAL SIGNATURE COPY by all requisite corporate action. Merger Sub and ACI have duly executed and delivered this Agreement. This Agreement is, valid and legally binding obligations of Merger Sub and ACI, enforceable against Merger Sub and ACI in accordance with their respective terms. 3.2.2 NO CONFLICTS, ETC. The execution, delivery and performance by Merger Sub of this Agreement and the consummation of the transactions contemplated hereby, do not and will not conflict with or result in a violation of or under (with or without the giving of notice or the lapse of time, or both) (i) the articles of incorporation or by-laws or other organizational documents of Merger Sub or ACI, (ii) any applicable law applicable to Merger Sub, ACI or any of their affiliates or any of their properties or assets or (iii) any contract, agreement or other instrument applicable to Merger Sub, ACI or any of their affiliates or any of their properties or assets, except, in the case of clause (iii), for violations and defaults that, individually and in the aggregate, have not and will not materially impair the ability of ACI or Merger Sub to perform their obligations under this Agreement or to consummate the transactions contemplated hereby. No governmental approval is required to be obtained or made by Merger Sub or ACI in connection with the execution and delivery of this Agreement or the consummation of the transactions contemplated hereby. 3.2.3 LITIGATION. There is no action, claim, suit or proceeding pending, or to Merger Sub's or ACI's knowledge threatened, by or against or affecting Merger Sub or ACI in connection with or relating to the transactions contemplated by this Agreement or of any action taken or to be taken in connection herewith or the consummation of the transactions contemplated hereby. 3.2.4 BROKERS AND FINDERS. All negotiations relating to this Agreement and the transactions contemplated hereby have been carried on without the participation of any person acting on behalf of Merger Sub, ACI or any of their affiliates in such manner as to give rise to any valid claim against any Partner for any brokerage or finder's commission, fee or similar compensation. 3.2.5 DISCLOSURE. No representation or warranty by ACI or Merger Sub contained in this Agreement or any statement or certificate furnished or to be furnished by or on behalf of ACI or Merger Sub to the Partners or their representatives in connection herewith or pursuant hereto contains or will contain any untrue statement of a material fact, or omits or will omit to state any material fact required to make the statements contained herein or therein not misleading. There is no fact (other than matters of a general economic or political nature which do not affect its business uniquely) known to ACI or Merger Sub that has not been disclosed by ACI and Merger Sub to the Partners that might reasonably be expected to have or result in a Material Adverse Effect. -7- FINAL SIGNATURE COPY ARTICLE 4 ADDITIONAL AGREEMENTS SECTION 4.1 INDEMNIFICATION. Each Partner agrees to indemnify, defend and hold harmless ACI and Merger Sub and each of its partners, shareholders, directors, officers and affiliates, on demand, for any damage, loss, cost, or expense (including attorneys' fees and costs of investigation incurred in defending against or settling such damage, loss, cost or expense) reasonably incurred by ACI or Merger Sub arising out of or in connection with any breach of any representation, warranty, agreement or covenant of either Partner under this Agreement. ACI and Merger Sub agree to indemnify, defend and hold harmless the Partners and each of their partners, shareholders, directors, officers and affiliates, on demand, for any damage, loss, cost, or expense (including attorneys' fees and costs of investigation incurred in defending against or settling such damage, loss, cost or expense) reasonably incurred by the Partners arising out of or in connection with any breach of any representation, warranty, agreement or covenant of ACI or Merger Sub under this Agreement. SECTION 4.2 CLOSING DOCUMENTS; REASONABLE EFFORTS. Subject to the terms and conditions of this Agreement, the Partners and Merger Sub shall use all reasonable efforts to take, or cause to be taken, all action, and to do, or cause to be done, all things necessary, proper or advisable under applicable laws and regulations, to carry out the purposes and intent of this Agreement in accordance with the terms hereof, including cooperating fully with the other party, providing information reasonably required, and making of all necessary filings, in each case, as expeditiously as is reasonably practicable. In case at any time after the Closing any further action is required or reasonably necessary or desirable to carry out the purposes and intent of this Agreement, the Partners and Merger Sub shall take all such actions required or reasonably necessary or desirable to the extent permitted under applicable laws and regulations. SECTION 4.3 NOTICE OF BREACH. In the event of, and promptly after, the taking of any action or the impending or threatened occurrence of any event, the taking or occurrence of which would make untrue, inaccurate or misleading, or would constitute or result in a breach or violation of, any of the representations, warranties, covenants or agreements set forth in this Agreement, the breaching party shall promptly give detailed written notice thereof to the other party hereto. The breaching party shall promptly correct in writing any such untrue, inaccurate or misleading representation warranty, covenant or agreement, and shall use its best efforts to prevent or remedy promptly any such breach, and, in any event, shall promptly complete or correct in writing any information affected by any such breach. SECTION 4.4 SALE OR ENCUMBRANCE OF PARTNERSHIP INTERESTS. Neither Partner shall sell, transfer, assign or allow any Lien to be placed on such Partner's Partnership Interest prior to the expiration of the Option Term and during any time period thereafter that Merger Sub could acquire the Partnership Interests under the Second Option. SECTION 4.5 TAX ALLOCATION DISTRIBUTION. Subject to the partnership agreement and applicable laws and so long as ACI shall directly or indirectly elect the general partner, ACI shall -8- FINAL SIGNATURE COPY cause the general partner of the Partnership to distribute an amount of cash sufficient to enable each partner to pay its portion of federal income tax arising from its allocable share of Partnership activities, assuming the highest marginal tax rate under Section 1 of the Internal Revenue Code of 1986, as amended from time to time. SECTION 4.6 WITHDRAWAL OF CAPITAL. In connection with the consummation of the HOLD Merger Agreement, a balance sheet of the Partnership is to be prepared and is to contain a separate statement detailing the capital accounts of the Partners as at the closing of HOLD Merger Agreement (the "Merger Closing -------------- Date"), in accordance with the regulations of the Internal Revenue Code of 1986, - ---- as amended. Merger Sub shall cause the Partnership to distribute to the Partners cash in the amount equal to their respective positive capital account balances, if any, on the Merger Closing Date. Such distributions shall be made by the Partnership in four equal installments beginning on the first day of the calendar quarter beginning after the date of the balance sheet referred to herein is provided to ACI, and on the first day of the next three calendar quarters thereafter. The Partnership shall not be required to make a distribution to the Partners if (i) such distribution would reduce either of the capital accounts of the Partners to less than zero, or (ii) if to do so would materially adversely affect the cash flow requirements of the Partnership. If either condition shall exist on any distribution date, that distribution date and all future distribution dates shall be automatically extended for one calendar quarter. SECTION 4.7 LINE OF CREDIT. ACI shall use its reasonable best efforts to (i) maintain Billings existing line of credit or (ii) replace such line of credit with comparable financing. ARTICLE 5 GENERAL PROVISIONS SECTION 5.1 SURVIVAL OF REPRESENTATIONS AND WARRANTIES. The representations and warranties contained in this Agreement shall survive the execution and delivery of this Agreement, any examination by or on behalf of the parties hereto and the completion of the transactions contemplated herein and shall be true and correct on the Closing Date and the closing date of the Second Option. SECTION 5.2 SEVERABILITY. If any provision of this Agreement, including any phrase, sentence, clause, Section or subsection is inoperative or unenforceable for any reason, such circumstances shall not have the effect of rendering the provision in question inoperative or unenforceable in any other case or circumstance, or of rendering any other provision or provisions herein contained invalid, inoperative, or unenforceable to any extent whatsoever. SECTION 5.3 NOTICES. All notices, requests, demands, waivers and other communications required or permitted to be given under this Agreement shall be in writing and shall be deemed to have been duly given if (a) delivered personally, (b) mailed by first-class, registered or -9- FINAL SIGNATURE COPY certified mail, return receipt requested, postage prepaid, or (c) sent by next-day or overnight mail or delivery or (d) sent by telecopy or telegram, (a) if to Merger Sub or ACI, to: Avery Communications, Inc. 801 Greenview Drive Grand Prairie, Texas 75050 Attention: Patrick J. Haynes, III with a copy to: Bruce A. Cheatham, Esq. Winstead Sechrest & Minick P.C. 1201 Elm Street, Suite 5400 Dallas, Texas 75270 (b) if to Partners, to: Harold D. Box or David W. Mechler, Jr. 8000 Vantage Building A, Suite 2001 San Antonio, Texas 78230 with a copy to: David Turlington, Esq. P. O. Box 46068 San Antonio, Texas 78246 (210)342-0257 or, in each case, at such other address as may be specified in writing to the other parties hereto. All such notices, requests, demands, waivers and other communications shall be deemed to have been received (w) if by personal delivery on the day after such delivery, (x) if by certified or registered mail, on the seventh business day after the mailing thereof, (y) if by next-day or overnight mail or delivery, on the day delivered, (z) if by telecopy or telegram, on the next day following the day on which such telecopy or telegram was sent, provided that a copy is also sent by certified or registered mail. SECTION 5.4 HEADINGS. The headings contained in this Agreement are for purposes of convenience only and shall not affect the meaning or interpretation of this Agreement. SECTION 5.5 ENTIRE AGREEMENT. This Agreement and the Partnership Interest Purchase Agreement and the schedules hereto constitute the entire agreement and supersede all prior -10- FINAL SIGNATURE COPY agreements and understandings, both written and oral, between the parties with respect to the subject matter hereof. SECTION 5.6 COUNTERPARTS. This Agreement may be executed in several counterparts, each of which shall be deemed an original and all of which shall together constitute one and the same instrument. SECTION 5.7 GOVERNING LAW, ETC. This Agreement shall be governed in all respects, including as to validity, interpretation and effect, by the internal laws of the State of Texas, without giving effect to the conflict of laws rules thereof. ACI, Merger Sub, and each Partner hereby irrevocably submit to the jurisdiction of the courts of the State of Texas and the Federal courts of the United States of America located in the State of Texas, City and County of Dallas, solely in respect of the interpretation and enforcement of the provisions of this Agreement and of the documents referred to in this Agreement, and hereby waive, and agree not to assert, as a defense in any action, suit or proceeding for the interpretation or enforcement hereof or of any such document, that it is not subject thereto or that such action, suit or proceeding may not be brought or is not maintainable in said courts or that the venue thereof may not be appropriate or that this Agreement or any of such document may not be enforced in or by said courts, and the parties hereto irrevocably agree that all claims with respect to such action or proceeding shall be heard and determined in such a Texas State or Federal court. ACI, Merger Sub, and each Partner hereby consent to and grant any such court jurisdiction over the person of such parties and over the subject matter of any such dispute and agree that mailing of process or other papers in connection with any such action or proceeding in the manner provided in Section 5.3, or in such other manner as may be permitted by law, shall be valid and sufficient service thereof. SECTION 5.8 BINDING EFFECT. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective heirs, successors and permitted assigns. SECTION 5.9 ASSIGNMENT. This Agreement shall not be assignable or otherwise transferable by any party hereto without the prior written consent of the other parties hereto; provided, however, that ACI may assign this Agreement -------- ------- to Merger Sub and its successors and assigns, and ACI and Merger Sub may assign this Agreement to any lender to ACI or any subsidiary or affiliate thereof as security for obligations to such lender in respect of the financing arrangements entered into in connection with the transactions contemplated hereby and any refinancings, extensions, refundings or renewals thereof; and, provided, -------- further, that no assignment to any such lender shall in any way affect ACI's or - ------- Merger Sub's obligations or liabilities under this Agreement. SECTION 5.10 NO THIRD PARTY BENEFICIARIES. Except as provided in Section 4.1 with respect to indemnification, nothing in this Agreement shall confer any rights upon any person or entity other than the parties hereto and their respective heirs, successors and permitted assigns. SECTION 5.11 AMENDMENT; WAIVERS, ETC. No amendment, modification or discharge of this Agreement, and no waiver hereunder, shall be valid or binding unless set forth in writing and duly executed by the party against whom enforcement of the amendment, modification, discharge -11- FINAL SIGNATURE COPY or waiver is sought. Any such waiver shall constitute a waiver only with respect to the specific matter described in such writing and shall in no way impair the rights of the party granting such waiver in any other respect or at any other time. Neither the waiver by any of the parties hereto of a breach of or a default under any of the provisions of this Agreement, nor the failure by any of the parties, on one or more occasions, to enforce any of the provisions of this Agreement or to exercise any right or privilege hereunder, shall be construed as a waiver of any other breach or default of a similar nature, or as a waiver of any of such provisions, rights or privileges hereunder. The rights and remedies herein provided are cumulative and are not exclusive of any rights or remedies that any party may otherwise have at law or in equity. The rights and remedies of any party based upon, arising out of or otherwise in respect of any inaccuracy or breach of any representation, warranty, covenant or agreement or failure to fulfill any condition shall in no way be limited by the fact that the act, omission, occurrence or other state of facts upon which any claim of any such inaccuracy or breach is based may also be the subject matter of any other representation, warranty, covenant or agreement as to which there is no inaccuracy or breach. The representations and warranties of Partners shall not be affected or deemed waived by reason of any investigation made by or on behalf of Merger Sub or ACI (including by any of their respective advisors, consultants or representatives) or by reason of the fact that Merger Sub or ACI or any of such advisors, consultants or representatives knew or should have known that any such representation or warranty is or might be inaccurate. The representations and warranties of Merger Sub and ACI shall not be affected or deemed waived by reason of any investigation made by or on behalf of Partners (including by any of their respective advisors, consultants or representatives) or by reason of the fact that Partners or any of such advisors, consultants or representatives knew or should have known that any such representation or warranty is or might be inaccurate. SECTION 5.12 CONVEYANCE OF GENERAL PARTNER. If the transactions contemplated by Section 3.1.10 of the Partnership Interest Purchase Agreement be consummated as therein provided, each and every representation, warranty, term, condition and other provision of this Agreement affected thereby shall be deemed to be automatically modified to reflect properly and give effect to the consummation of such transactions. -12- FINAL SIGNATURE COPY IN WITNESS WHEREOF, the parties have duly executed this Agreement as of the date first above written. AVERY COMMUNICATIONS, INC. By:________________________________ Patrick J. Haynes, III Chairman of the Board AVERY ACQUISITION SUB, INC. By:________________________________ Patrick J. Haynes, III Chairman of the Board PARTNERS: ___________________________________ Harold D. Box ___________________________________ David W. Mechler, Jr. -13-