LHS GROUP INC
8-K, 1997-05-27
COMPUTER PROGRAMMING SERVICES
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549



                                    FORM 8-K

                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934


        Date of Report (Date of earliest event reported):  May 15, 1997

                                 LHS GROUP INC.
             (Exact name of Registrant as specified in its charter)


      DELAWARE                      0-22409                  58-2224883
(State of Incorporation)     (Commission File No.)        (I.R.S. Employer
                                                         Identification No.)



                       SIX CONCOURSE PARKWAY, SUITE 2700
                            ATLANTA, GEORGIA  30328
          (Address of principal executive offices, including zip code)


                                 (770) 280-3000
              (Registrant's telephone number, including area code)
<PAGE>
 
ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS
- -------------------------------------------

     (a) The following exhibit is filed as part of this Form 8-K:

     Exhibit      Description
     -------      -----------

     1.1        U.S. Underwriting Agreement between the Company, certain
                stockholders of the Company and Goldman, Sachs & Co., Robertson,
                Stephens & Company LLC and Cowen and Company, as representatives
                of the several underwriters.

     1.2        International Underwriting Agreement between the Company,
                certain stockholders of the Company and Goldman Sachs
                International, Robertson, Stephens & Company LLC and Cowen and
                Company, as representatives of the several underwriters.


                                   SIGNATURES


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                             LHS GROUP INC.
                                              (REGISTRANT)



                                             /s/  Hartmut Lademacher
                                             -----------------------
                                             Hartmut Lademacher
                                             Chairman of the Board and
                                             Chief Executive Officer


Date:  May 22, 1997

                                      -2-
<PAGE>
 
                                 EXHIBIT INDEX
                                 -------------

     Exhibit      Description
     -------      -----------

     1.1          U.S. Underwriting Agreement between the Company, certain
                  stockholders of the Company and Goldman, Sachs & Co.,
                  Robertson, Stephens & Company LLC and Cowen and Company, as
                  representatives of the several underwriters.

     1.2          International Underwriting Agreement between the Company,
                  certain stockholders of the Company and Goldman Sachs
                  International, Robertson, Stephens & Company LLC and Cowen and
                  Company, as representatives of the several underwriters.

                                      -3-

<PAGE>
 
                                  EXHIBIT 1.1

                                 LHS GROUP INC.

                                  COMMON STOCK
                           (PAR VALUE $.01 PER SHARE)

                                _______________

                             UNDERWRITING AGREEMENT
                                 (U.S. VERSION)
                                _______________
                                                                    May 15, 1997

Goldman, Sachs & Co.,
Robertson, Stephens & Company LLC
Cowen & Company
 As representatives of the several Underwriters
  named in Schedule I hereto,
c/o Goldman, Sachs & Co.
85 Broad Street,
New York, New York 10004

Ladies and Gentlemen:

     LHS Group Inc., a Delaware corporation (the "Company"), proposes, subject
to the terms and conditions stated herein, to issue and sell to the Underwriters
named in Schedule I hereto (the "Underwriters") an aggregate of 3,316,000 shares
and, at the election of the Underwriters, up to 576,000 additional shares of
Common Stock, par value $.01 per share ("Stock") of the Company and the
stockholders of the Company named in Schedule II hereto (the "Selling
Stockholders") propose, subject to the terms and conditions stated herein, to
sell to the Underwriters an aggregate of 524,000 shares of Stock.  The aggregate
of 3,840,000 shares to be sold by the Company and the Selling Stockholders is
herein called the "Firm Shares" and the aggregate of 576,000 additional shares
to be sold by the Company is herein called the "Optional Shares".  The Firm
Shares and the Optional Shares that the Underwriters elect to purchase pursuant
to Section 2 hereof are herein collectively called the "Shares".

     It is understood and agreed to by all parties that the Company and the
Selling Stockholders are concurrently entering into an agreement (the
"International Underwriting Agreement") providing for the sale by the Company
and the Selling Stockholders of up to a total of 1,104,000 shares of Stock (the
"International Shares"), including the overallotment option thereunder, through
arrangements with certain underwriters outside the United States (the
"International Underwriters"), for whom Goldman Sachs International, Robertson,
Stephens & Company LLC and Cowen & Company are acting as lead managers.
Anything herein or therein to the contrary notwithstanding, the respective
closings under this Agreement and the International Underwriting Agreement are
hereby expressly made conditional on one another.  The Underwriters hereunder
and the International Underwriters are simultaneously entering into an Agreement
between U.S. and International Underwriting Syndicates (the "Agreement between
Syndicates") which 

                                      -4-
<PAGE>
 
provides, among other things, for the transfer of shares of Stock between the
two syndicates. Two forms of prospectus are to be used in connection with the
offering and sale of shares of Stock contemplated by the foregoing, one relating
to the Shares hereunder and the other relating to the International Shares. The
latter form of prospectus will be identical to the former except for certain
substitute pages as included in the registration statement and amendments
thereto as mentioned below. Except as used in Sections 2, 3, 4, 9 and 11 herein,
and except as the context may otherwise require, references hereinafter to the
Shares shall include all the shares of Stock which may be sold pursuant to
either this Agreement or the International Underwriting Agreement, and
references herein to any prospectus whether in preliminary or final form, and
whether as amended or supplemented, shall include both the U.S. and the
international versions thereof.

     1.   (a)  The Company represents and warrants to, and agrees with, each of
the Underwriters that:

              (i) A registration statement on Form S-1 (File No. 333-22195) (the
     Initial Registration Statement ) in respect of the Shares has been filed
     with the Securities and Exchange Commission (the "Commission"); such
     Initial Registration Statement and any post-effective amendment thereto,
     each in the form heretofore delivered to you, and, excluding exhibits
     thereto, to you for each of the other Underwriters, have been declared
     effective by the Commission in such form; other than a registration
     statement, if any, increasing the size of the offering (a  Rule 462(b)
     Registration Statement ), filed pursuant to Rule 462(b) under the
     Securities Act of 1933, as amended (the  Act ), which became effective upon
     filing, no other document with respect to the Initial Registration
     Statement has heretofore been filed with the Commission; and no stop order
     suspending the effectiveness of the Initial Registration Statement, any
     post-effective amendment thereto or the Rule 462(b) Registration Statement,
     if any, has been issued and, to the Company's knowledge, no proceeding for
     that purpose has been initiated or threatened by the Commission (any
     preliminary prospectus included in the Initial Registration Statement or
     filed with the Commission pursuant to Rule 424(a) of the rules and
     regulations of the Commission under the Act, is hereinafter called a
     "Preliminary Prospectus"; the various parts of the Initial Registration
     Statement and the Rule 462(b) Registration Statement, if any, including all
     exhibits thereto and including the information contained in the form of
     final prospectus filed with the Commission pursuant to Rule 424(b) under
     the Act in accordance with Section 5(a) hereof and deemed by virtue of Rule
     430A under the Act to be part of the Initial Registration Statement at the
     time it was declared effective or such part of the Rule 462(b) Registration
     Statement, if any, became or hereafter becomes effective, each as amended
     at the time such part of the registration statement became effective, are
     hereinafter collectively called the "Registration Statement"; and such
     final prospectus, in the form first filed pursuant to Rule 424(b) under the
     Act, is hereinafter called the "Prospectus";

              (ii) No order preventing or suspending the use of any Preliminary
     Prospectus has been issued by the Commission, and each Preliminary
     Prospectus, at the time of filing thereof, conformed in all material
     respects to the requirements of the Act and the rules and regulations of
     the Commission thereunder, and did not contain an untrue statement of a
     material fact or omit to state a material fact required to be stated
     therein or necessary to make the statements therein, in the light of the
     circumstances under which they were made, not misleading; provided,
     however, that this representation and warranty shall not apply to any
     statements or omissions made in reliance upon and in conformity with
     information furnished in writing to the Company by or on behalf of an
     Underwriter through Goldman, Sachs & Co. expressly for use therein;

                                      -5-
<PAGE>
 
              (iii)  The Registration Statement conforms, and the Prospectus and
     any further amendments or supplements to the Registration Statement or the
     Prospectus will conform, in all material respects to the requirements of
     the Act and the rules and regulations of the Commission thereunder and do
     not and will not, as of the applicable effective date as to the
     Registration Statement and any amendment thereto and as of the applicable
     filing date as to the Prospectus and any amendment or supplement thereto,
     contain an untrue statement of a material fact or omit to state a material
     fact required to be stated therein or necessary to make the statements
     therein not misleading; provided, however, that this representation and
     warranty shall not apply to any statements or omissions made in reliance
     upon and in conformity with information furnished in writing to the Company
     by or on behalf of an Underwriter through Goldman, Sachs & Co. expressly
     for use therein;

              (iv) Neither the Company nor any of its subsidiaries has sustained
     since the date of the latest audited financial statements included in the
     Prospectus any material loss or interference with its business from fire,
     explosion, flood or other calamity, whether or not covered by insurance, or
     from any labor dispute or court or governmental action, order or decree,
     otherwise than as set forth or contemplated in the Prospectus; and, since
     the respective dates as of which information is given in the Registration
     Statement and the Prospectus, there has not been any material change in the
     capital stock or long-term debt of the Company or any of its subsidiaries
     or any material adverse change, or any development involving a prospective
     material adverse change, in or affecting the general affairs, management,
     financial position, stockholders' equity or results of operations of the
     Company and its subsidiaries taken as a whole, otherwise than as set forth
     or contemplated in the Prospectus;

              (v) The Company and its subsidiaries have good and marketable
     title in fee simple to all real property and good and marketable title to
     all personal property owned by them, in each case free and clear of all
     liens, encumbrances and defects except such as are described in the
     Prospectus or such as do not materially affect the value of such property
     and do not interfere with the use made and proposed to be made of such
     property by the Company and its subsidiaries; and any real property and
     buildings held under lease by the Company and its subsidiaries are held by
     them under valid, subsisting and enforceable leases (except to the extent
     that the rights and remedies created thereby may be limited by applicable
     bankruptcy, insolvency, reorganization and similar laws affecting rights
     and remedies of creditors generally) with such exceptions as are not
     material and do not interfere with the use made and proposed to be made of
     such property and buildings by the Company and its subsidiaries;

              (vi) The Company has been duly incorporated and is validly
     existing as a corporation in good standing under the laws of the State of
     Delaware, with power and authority (corporate and other) to own its
     properties and conduct its business as described in the Prospectus, and has
     been duly qualified as a foreign corporation for the transaction of
     business and is in good standing under the laws of each other jurisdiction
     in which it owns or leases properties or conducts any business so as to
     require such qualification, or is subject to no material liability or
     disability by reason of the failure to be so qualified in any such
     jurisdiction; and each subsidiary of the Company has been duly incorporated
     and is validly existing as a corporation in good standing under the laws of
     its jurisdiction of incorporation;

              (vii)  The Company has an authorized capitalization as set forth
     in the Prospectus, and all of the issued shares of capital stock of the
     Company have been duly and validly authorized and issued, are fully paid
     and non-assessable and conform to the description of the Stock contained 

                                      -6-
<PAGE>
 
     in the Prospectus; and all of the issued shares of capital stock of each
     subsidiary of the Company have been duly and validly authorized and issued,
     are fully paid and non-assessable and (except for directors' qualifying
     shares) are owned directly or indirectly by the Company, free and clear of
     all liens, encumbrances, equities or claims;

              (viii)  The unissued Shares to be issued and sold by the Company
     to the Underwriters hereunder and under the International Underwriting
     Agreement have been duly and validly authorized and, when issued and
     delivered against payment therefor as provided herein and in the
     International Underwriting Agreement, will be duly and validly issued and
     fully paid and non-assessable and will conform to the description of the
     Stock under the caption "Description of Capital Stock" contained in the
     Prospectus;

              (ix) The issue and sale of the Shares by the Company hereunder and
     under the International Underwriting Agreement and the compliance by the
     Company with all of the provisions of this Agreement and the International
     Underwriting Agreement and the consummation of the transactions herein and
     therein contemplated will not conflict with or result in a breach or
     violation of any of the terms or provisions of, or constitute a default
     under, any indenture, mortgage, deed of trust, loan agreement or other
     agreement or instrument to which the Company or any of its subsidiaries is
     a party or by which the Company or any of its subsidiaries is bound or to
     which any of the property or assets of the Company or any of its
     subsidiaries is subject, nor will such action result in any violation of
     the provisions of the Certificate of Incorporation or By-laws of the
     Company or any statute or any order, rule or regulation of any court or
     governmental agency or body having jurisdiction over the Company or any of
     its subsidiaries or any of their properties; and no consent, approval,
     authorization, order, registration or qualification of or with any such
     court or governmental agency or body is required on the part of the Company
     for the issue and sale of the Shares or the consummation by the Company of
     the transactions contemplated by this Agreement and the International
     Underwriting Agreement, except the registration under the Act of the
     Shares, the registration under the Securities Exchange Act of 1934, as
     amended (the "Exchange Act") of the Stock and such consents, approvals,
     authorizations, registrations or qualifications as may be required under
     state or foreign securities or Blue Sky laws in connection with the
     purchase and distribution of the Shares by the Underwriters and the
     International Underwriters;

              (x) Neither the Company nor any of its subsidiaries is in
     violation of its Certificate of Incorporation or By-laws or in default in
     the performance or observance of any material obligation, agreement,
     covenant or condition contained in any indenture, mortgage, deed of trust,
     loan agreement, lease or other material agreement or instrument to which it
     is a party or by which it or any of its properties may be bound;

              (xi) The statements set forth in the Prospectus under the caption
     Description of Capital Stock , insofar as they purport to constitute a
     summary of the terms of the Stock, are accurate, complete and fair;

              (xii)  Other than as set forth or contemplated in the Prospectus,
     there are no legal or governmental proceedings pending to which the Company
     or any of its subsidiaries is a party or of which any property of the
     Company or any of its subsidiaries is the subject which, if determined
     adversely to the Company or any of its subsidiaries, would individually or
     in the aggregate have a material adverse effect on the current or future
     consolidated financial position, stockholders' equity or results of
     operations of the Company and its subsidiaries taken as a whole; and, to
     the best of the Company's knowledge, no such proceedings are threatened or
     contemplated by governmental authorities or threatened by others;

                                      -7-
<PAGE>
 
              (xiii)  The Company is not and, after giving effect to the
     offering and sale of the Shares, will not be an "investment company" or an
     entity "controlled" by an  investment company", as such terms are defined
     in the Investment Company Act of 1940, as amended (the "Investment Company
     Act");

              (xiv)  Neither the Company nor any of its affiliates does business
     with the government of Cuba or with any person or affiliate located in Cuba
     within the meaning of Section 517.075, Florida Statutes;

              (xv) Ernst & Young, LLP, who have certified certain financial
     statements of the Company and its subsidiaries, are independent public
     accountants as required by the Act and the rules and regulations of the
     Commission thereunder; and

              (xvi)  The Company and its subsidiaries have all right, title and
     interest in and to all intellectual property rights or user rights in all
     software owned by the Company and its subsidiaries for license to third
     parties or use in connection with its business (the "Proprietary
     Software"), other than the Company's APSIS product for which the Company
     shares the rights, title and interests in the underlying software with
     Telecom PTT.  The use of all software (other than the Proprietary Software)
     used in connection with the business (the "Licensed Software" and together
     with the Proprietary Software, the "Software") and the use and distribution
     of the Proprietary Software does not breach any terms of any material
     agreement between the Company or any of its subsidiaries and any third
     party.  To the best knowledge of the Company, the Company and its
     subsidiaries have been granted under license agreements relating to the
     Licensed Software (the "License Agreements") valid and subsisting license
     rights with respect to all software comprising the Licensed Software.  The
     Company and its subsidiaries are in compliance in all material respects
     with each of the terms and conditions of each of the License Agreements.

              (xvii)   To the actual knowledge of the Company, Proprietary
     Software and the Licensed Software does not infringe any United States
     patent, copyright, or trade secret or any other intellectual property right
     of any third party.  The Company has used in its best efforts to protect
     the source code as confidential and trade secret information of the
     Company, including obtaining signed agreements with third parties that have
     access to the source code.

              (xviii)  To the best knowledge of the Company, the Proprietary
     Software was:  (i) developed by the Company's employees working within the
     scope of their employment at the time of such development; (ii) developed
     by agents, consultants, contractors or others who have executed or will
     execute appropriate instruments of assignment in favor of the Company as
     assignee that have conveyed to the Company ownership of all of their
     intellectual property rights or user rights in the Proprietary Software; or
     (iii) acquired by the Company in connection with acquisitions in which the
     Company obtained appropriate representations and warranties from the
     transferring party relating to the title to such Proprietary Software.  To
     the best knowledge of the Company, neither the Company nor any of its
     subsidiaries has received notice from any third party claiming any right,
     title or interest in the Proprietary Software and the Proprietary Software
     is free and clear of all liens, claims and encumbrances.

              (xix)  The Prospectus that has been translated into German and
     that is required for obtaining the listing of the Common Stock on the New
     Market of the Frankfurt Stock Exchange (the "German Prospectus") conforms
     in all material respects to the Prospectus, and does not 

                                      -8-
<PAGE>
 
     contain an untrue statement of a material fact or omit to state a material
     fact required to be stated therein or necessary to make the statements
     therein, in light of the circumstances under which they were made, not
     mislead; provided, however, that this representation and warranty shall not
     apply to any statements or omissions made in reliance upon and in
     conformity with information furnished in writing to the Company by or on
     behalf of an Underwriter through Goldman, Sachs & Co. expressly for use
     therein;

     (b) Each of the Selling Stockholders severally represents and warrants to,
and agrees with, each of the Underwriters and the Company that:

              (i) All consents, approvals, authorizations and orders necessary
     for the execution and delivery by such Selling Stockholder of this
     Agreement, the International Underwriting Agreement and the Power of
     Attorney and the Custody Agreement hereinafter referred to, and for the
     performance by such Selling Stockholder hereunder and under the
     International Underwriting Agreement, have been obtained; and such Selling
     Stockholder has full right, power and authority to enter into this
     Agreement, the International Underwriting Agreement, the Power of Attorney
     and the Custody Agreement and to sell, assign, transfer and deliver the
     Shares to be sold by such Selling Stockholder hereunder and under the
     International Underwriting Agreement;

              (ii) The sale of the Shares to be sold by such Selling Stockholder
     hereunder and under the International Underwriting Agreement and the
     compliance by such Selling Stockholder with all of the provisions of this
     Agreement, the International Underwriting Agreement, the Power of Attorney
     and the Custody Agreement and the consummation of the transactions herein
     and therein contemplated will not conflict with or result in a breach or
     violation of any of the terms or provisions of, or constitute a default
     under, any statute, indenture, mortgage, deed of trust, loan agreement or
     other material agreement or instrument to which such Selling Stockholder is
     a party or by which such Selling Stockholder is bound, or to which any of
     the property or assets of such Selling Stockholder is subject, nor will
     such action result in any violation of the provisions of the Certificate of
     Incorporation or By-laws of such Selling Stockholder if such Selling
     Stockholder is a corporation, the Partnership Agreement of such Selling
     Stockholder if such Selling Stockholder is a partnership or any statute or
     any order, rule or regulation of any court or governmental agency or body
     having jurisdiction over such Selling Stockholder or the property of such
     Selling Stockholder;

              (iii)  Such Selling Stockholder has, and immediately prior to the
     First Time of Delivery (as defined in Section 4 hereof) such Selling
     Stockholder will have, good and valid title to the Shares to be sold by
     such Selling Stockholder hereunder and under the International Underwriting
     Agreement, free and clear of all liens, encumbrances, equities or claims
     other than as imposed by the Act, this Agreement or the International
     Underwriting Agreement; and, upon delivery of such Shares and payment
     therefor pursuant hereto and thereto, good and valid title to such Shares,
     free and clear of all liens, encumbrances, equities or claims, will pass to
     the several Underwriters or the International Underwriters, as the case may
     be;

              (iv) During the period beginning from the date hereof and
     continuing to and including the date 180 days after the date of the
     Prospectus, such selling stockholder shall not offer, sell, contract to
     sell or otherwise dispose of, except as provided hereunder or under the
     International Underwriting Agreement, any securities of the Company that
     are substantially similar to the Shares, including but not limited to any
     securities that are convertible into or exchangeable for, or that represent
     the right to receive, Stock or any such substantially similar securities
     (other than pursuant to employee stock option plans existing on, or upon
     the conversion or exchange of 

                                      -9-
<PAGE>
 
     convertible or exchangeable securities outstanding as of, the date of this
     Agreement), without the prior written consent of Goldman, Sachs & Co.;

              (v) Such Selling Stockholder has not taken and will not take,
     directly or indirectly, any action which is designed to or which has
     constituted or which might reasonably be expected to cause or result in
     stabilization or manipulation of the price of any security of the Company
     to facilitate the sale or resale of the Shares;

              (vi) To the extent that any statements or omissions made in the
     Registration Statement, any Preliminary Prospectus, the Prospectus or any
     amendment or supplement thereto are made in reliance upon and in conformity
     with written information furnished to the Company by such Selling
     Stockholder expressly for use therein, such Preliminary Prospectus and the
     Registration Statement did, and the Prospectus and any further amendments
     or supplements to the Registration Statement and the Prospectus, when they
     become effective or are filed with the Commission, as the case may be, will
     conform in all material respects to the requirements of the Act and the
     rules and regulations of the Commission thereunder and will not contain any
     untrue statement of a material fact or omit to state any material fact
     required to be stated therein or necessary to make the statements therein
     not misleading;

              (vii)  In order to document the Underwriters' compliance with the
     reporting and withholding provisions of the Tax Equity and Fiscal
     Responsibility Act of 1982 with respect to the transactions herein
     contemplated, such Selling Stockholder will deliver to you prior to or at
     the First Time of Delivery (as hereinafter defined) a properly completed
     and executed United States Treasury Department Form W-9 (or other
     applicable form or statement specified by Treasury Department regulations
     in lieu thereof);

              (viii)  Certificates in negotiable form representing all of the
     Shares to be sold by such Selling Stockholder hereunder and under the
     International Underwriting Agreement have been placed in custody under a
     Custody Agreement, in the form heretofore furnished to you (the  Custody
     Agreement ), duly executed and delivered by such Selling Stockholder to
     SunTrust Bank, Atlanta, as custodian (the "Custodian"), and such Selling
     Stockholder has duly executed and delivered a Power of Attorney, in the
     form heretofore furnished to you (the  Power of Attorney ), appointing the
     persons indicated in Schedule II hereto, and each of them, as such Selling
     Stockholder's attorneys-in-fact (the "Attorneys-in-Fact") with authority to
     execute and deliver this Agreement and the International Underwriting
     Agreement on behalf of such Selling Stockholder, to determine the purchase
     price to be paid by the Underwriters and the International Underwriters to
     the Selling Stockholders as provided in Section 2 hereof, to authorize the
     delivery of the Shares to be sold by such Selling Stockholder hereunder and
     otherwise to act on behalf of such Selling Stockholder in connection with
     the transactions contemplated by this Agreement, the International
     Underwriting Agreement and the Custody Agreement; and

              (ix) The Shares represented by the certificates held in custody
     for such Selling Stockholder under the Custody Agreement are subject to the
     interests of the Underwriters hereunder and the International Underwriters
     under the International Underwriting Agreement; the arrangements made by
     such Selling Stockholder for such custody, and the appointment by such
     Selling Stockholder of the Attorneys-in-Fact by the Power of Attorney, are
     to that extent irrevocable; the obligations of the Selling Stockholders
     hereunder shall not be terminated by operation of law, whether by the death
     or incapacity of any individual Selling Stockholder or, in the case of an
     estate or trust, by the death or incapacity of any executor or trustee or
     the termination of 

                                      -10-
<PAGE>
 
     such estate or trust, or in the case of a partnership or corporation, by
     the dissolution of such partnership or corporation, or by the occurrence of
     any other event, except as provided in this Agreement, the International
     Underwriting Agreement or the Custody Agreement; if any individual Selling
     Stockholder or any such executor or trustee should die or become
     incapacitated, or if any such estate or trust should be terminated, or if
     any such partnership or corporation should be dissolved, or if any other
     such event should occur, before the delivery of the Shares hereunder,
     certificates representing the Shares shall be delivered by or on behalf of
     the Selling Stockholders in accordance with the terms and conditions of
     this Agreement, of the International Underwriting Agreement and of the
     Custody Agreements; and actions taken by the Attorneys-in-Fact pursuant to
     the Powers of Attorney shall be as valid as if such death, incapacity,
     termination, dissolution or other event had not occurred, regardless of
     whether or not the Custodian, the Attorneys-in-Fact, or any of them, shall
     have received notice of such death, incapacity, termination, dissolution or
     other event.

     2.   Subject to the terms and conditions herein set forth, (a) the Company
and each of the Selling Stockholders agrees, severally and not jointly, to sell
to each of the Underwriters, and each of the Underwriters agrees, severally and
not jointly, to purchase from the Company and each of the Selling Stockholders,
at a purchase price per share of $16.00, the number of Firm Shares (to be
adjusted by you so as to eliminate fractional shares) determined by multiplying
the aggregate number of Firm Shares to be sold by the Company and each of the
Selling Stockholders as set forth opposite their respective names in Schedule II
hereto by a fraction, the numerator of which is the aggregate number of Firm
Shares to be purchased by such Underwriter as set forth opposite the name of
such Underwriter in Schedule I hereto and the denominator of which is the
aggregate number of Firm Shares to be purchased by all of the Underwriters from
the Company and all of the Selling Stockholders hereunder and (b) in the event
and to the extent that the Underwriters shall exercise the election to purchase
Optional Shares as provided below, the Company agrees to issue and sell to each
of the Underwriters, and each of the Underwriters agrees, severally and not
jointly, to purchase from the Company, at the purchase price per share set forth
in clause (a) of this Section 2, that portion of the number of Optional Shares
as to which such election shall have been exercised (to be adjusted by you so as
to eliminate fractional shares) determined by multiplying such number of
Optional Shares by a fraction, the numerator of which is the maximum number of
Optional Shares which such Underwriter is entitled to purchase as set forth
opposite the name of such Underwriter in Schedule I hereto and the denominator
of which is the maximum number of Optional Shares that all of the Underwriters
are entitled to purchase hereunder.

     The Company hereby grants to the Underwriters the right to purchase at
their election up to 480,000 Optional Shares, at the purchase price per share
set forth in the paragraph above, for the sole purpose of covering
overallotments in the sale of the Firm Shares.  Any such election to purchase
Optional Shares may be exercised only by written notice from you to the Company,
given within a period of 30 calendar days after the date of this Agreement,
setting forth the aggregate number of Optional Shares to be purchased and the
date on which such Optional Shares are to be delivered, as determined by you but
in no event earlier than the First Time of Delivery (as defined in Section 4
hereof) or, unless you and the Company otherwise agree in writing, earlier than
two or later than ten business days after the date of such notice.

     3.   Upon the authorization by you of the release of the Firm Shares, the
several Underwriters propose to offer the Firm Shares for sale upon the terms
and conditions set forth in the Prospectus.

     4.  (a)  The Shares to be purchased by each Underwriter hereunder, in
     definitive form, and in such authorized denominations and registered in
     such names as Goldman, Sachs & Co. may request upon at least forty-eight
     hours' prior notice to the Company and the Selling Stockholders, 

                                      -11-
<PAGE>
 
     shall be delivered by or on behalf of the Company and the Selling
     Stockholders to Goldman, Sachs & Co., for the account of such Underwriter,
     against payment by or on behalf of such Underwriter of the purchase price
     therefor by wire transfer to an account designated by the Company and the
     Custodian in Federal (same day) funds. The Company will cause the
     certificates representing the Shares to be made available for checking and
     packaging at least twenty-four hours prior to the Time of Delivery (as
     defined below) with respect thereto at the office of Goldman, Sachs & Co.,
     85 Broad Street, New York, New York 10004(the Designated Office ). The time
     and date of such delivery and payment shall be, with respect to the Firm
     Shares, 9:30 a.m., New York City time, on May 21, 1997 or such other time
     and date as Goldman, Sachs & Co. and the Company may agree upon in writing,
     and, with respect to the Optional Shares, 9:30 a.m., New York time, on the
     date specified by Goldman, Sachs & Co. in the written notice given by
     Goldman, Sachs & Co. of the Underwriters' election to purchase such
     Optional Shares, or such other time and date as Goldman, Sachs & Co. and
     the Company may agree upon in writing. Such time and date for delivery of
     the Firm Shares is herein called the First Time of Delivery , such time and
     date for delivery of the Optional Shares, if not the First Time of
     Delivery, is herein called the Second Time of Delivery , and each such time
     and date for delivery is herein called a Time of Delivery .

          (b) The documents to be delivered at each Time of Delivery by or on
     behalf of the parties hereto pursuant to Section 7 hereof, including the
     cross receipt for the Shares and any additional documents requested by the
     Underwriters pursuant to Section 7(j) hereof, will be delivered at the
     offices of King & Spalding, 191 Peachtree Street, Atlanta, Georgia 30303
     (the  Closing Location ), and the Shares will be delivered at the
     Designated Office, all at such Time of Delivery.  A meeting will be held at
     the Closing Location at 4:00 p.m., New York City time, on the New York
     Business Day next preceding such Time of Delivery, at which meeting the
     final drafts of the documents to be delivered pursuant to the preceding
     sentence will be available for review by the parties hereto.  For the
     purposes of this Section 4,  New York Business Day  shall mean each Monday,
     Tuesday, Wednesday, Thursday and Friday which is not a day on which banking
     institutions in New York are generally authorized or obligated by law or
     executive order to close.

     5.   The Company agrees with each of the Underwriters:

          (a) To prepare the Prospectus in a form approved by you and to file
     such Prospectus pursuant to Rule 424(b) under the Act not later than the
     Commission's close of business on the second business day following the
     execution and delivery of this Agreement, or, if applicable, such earlier
     time as may be required by Rule 430A(a)(3) under the Act; to make no
     further amendment or any supplement to the Registration Statement or
     Prospectus which reasonably shall be disapproved by you promptly after
     reasonable notice thereof; to advise you, promptly after it receives notice
     thereof, of the time when any amendment to the Registration Statement has
     been filed or becomes effective or any supplement to the Prospectus or any
     amended Prospectus has been filed and to furnish you with copies thereof;
     to advise you, promptly after it receives notice thereof, of the issuance
     by the Commission of any stop order or of any order preventing or
     suspending the use of any Preliminary Prospectus or prospectus, of the
     suspension of the qualification of the Shares for offering or sale in any
     jurisdiction, of the initiation or threatening of any proceeding for any
     such purpose, or of any request by the Commission for the amending or
     supplementing of the Registration Statement or Prospectus or for additional
     information; and, in the event of the issuance of any stop order or of any
     order preventing or suspending the use of any Preliminary Prospectus or
     prospectus or suspending any such qualification, promptly to use its best
     efforts to obtain the withdrawal of such order;

                                      -12-
<PAGE>
 
          (b) Promptly from time to time to take such action as you may
     reasonably request to qualify the Shares for offering and sale under the
     securities laws of such jurisdictions as you may request and to comply with
     such laws so as to permit the continuance of sales and dealings therein in
     such jurisdictions for as long as may be necessary to complete the
     distribution of the Shares, provided that in connection therewith the
     Company shall not be required to qualify as a foreign corporation or to
     file a general consent to service of process in any jurisdiction;

          (c) Prior to 12:00 p.m., New York City time, on the New York Business
     Day next succeeding the date of this Agreement and from time to time, to
     furnish the Underwriters with copies of the Prospectus in New York City in
     such quantities as you may from reasonably request, and, if the delivery of
     a prospectus is required at any time prior to the expiration of nine months
     after the time of issue of the Prospectus in connection with the offering
     or sale of the Shares and if at such time any event shall have occurred as
     a result of which the Prospectus as then amended or supplemented would
     include an untrue statement of a material fact or omit to state any
     material fact necessary in order to make the statements therein, in the
     light of the circumstances under which they were made when such Prospectus
     is delivered, not misleading, or, if for any other reason it shall be
     necessary during such period to amend or supplement the Prospectus in order
     to comply with the Act, to notify you and upon your request to prepare and
     furnish without charge to each Underwriter and to any dealer in securities
     as many copies as you may from time to time reasonably request of an
     amended Prospectus or a supplement to the Prospectus which will correct
     such statement or omission or effect such compliance, and in case any
     Underwriter is required to deliver a prospectus in connection with sales of
     any of the Shares at any time nine months or more after the time of issue
     of the Prospectus, upon your request but at the expense of such
     Underwriter, to prepare and deliver to such Underwriter as many copies as
     you may reasonably request of an amended or supplemented Prospectus
     complying with Section 10(a)(3) of the Act;

          (d) To make generally available to its securityholders as soon as
     practicable, but in any event not later than eighteen months after the
     effective date of the Registration Statement (as defined in Rule 158(c)
     under the Act), an earnings statement of the Company and its subsidiaries
     (which need not be audited) complying with Section 11(a) of the Act and the
     rules and regulations thereunder (including, at the option of the Company,
     Rule 158);

          (e) During the period beginning from the date hereof and continuing to
     and including the date 180 days after the date of the Prospectus, not to
     offer, sell, contract to sell or otherwise dispose of, except as provided
     hereunder and under the International Underwriting Agreement, any
     securities of the Company that are substantially similar to the Shares,
     including but not limited to any securities that are convertible into or
     exchangeable for, or that represent the right to receive, Stock or any such
     substantially similar securities (other than pursuant to employee stock
     option plans existing on, or upon the conversion or exchange of convertible
     or exchangeable securities outstanding as of, the date of this Agreement),
     without the prior written consent of Goldman, Sachs & Co.;

          (f) To furnish to its stockholders as soon as practicable after the
     end of each fiscal year an annual report (including a balance sheet and
     statements of income, stockholders' equity and cash flows of the Company
     and its consolidated subsidiaries certified by independent public
     accountants) and, as soon as practicable after the end of each of the first
     three quarters of each fiscal year (beginning with the fiscal quarter
     ending after the effective date of the Registration Statement),
     consolidated summary financial information of the Company and its
     subsidiaries for such quarter in reasonable detail;

                                      -13-
<PAGE>
 
          (g) During a period of three years from the effective date of the
     Registration Statement, to furnish to you copies of all reports or other
     communications (financial or other) furnished to stockholders, and to
     deliver to you (i) as soon as they are available, copies of any reports and
     financial statements furnished to or filed with the Commission or any
     national securities exchange on which any class of securities of the
     Company is listed; and (ii) such additional information concerning the
     business and financial condition of the Company as you may from time to
     time reasonably request (such financial statements to be on a consolidated
     basis to the extent the accounts of the Company and its subsidiaries are
     consolidated in reports furnished to its stockholders generally or to the
     Commission);

          (h) To use the net proceeds received by it from the sale of the Shares
     pursuant to this Agreement and the International Underwriting Agreement in
     the manner specified in the Prospectus under the caption  Use of Proceeds ;

          (i) To use its best efforts to list for quotation the Shares on the
     National Association of Securities Dealers Automated Quotations National
     Market System ( NASDAQ );

          (j) To file with the Commission such reports on Form SR as may be
     required by Rule 463 under the Act; and

          (k) If the Company elects to rely upon Rule 462(b), the Company shall
     file a Rule 462(b) Registration Statement with the Commission in compliance
     with Rule 462(b) by 10:00 P.M., Washington, D.C. time, on the date of this
     Agreement, and the Company shall at the time of filing either pay to the
     Commission the filing fee for the Rule 462(b) Registration Statement or
     give irrevocable instructions for the payment of such fee pursuant to Rule
     111(b) under the Act.

          6.  (a) The Company covenants and agrees with each of the Selling
     Stockholders and the several Underwriters that (a) the Company will pay or
     cause to be paid the following: (i) the fees, disbursements and expenses of
     the Company's counsel and accountants in connection with the registration
     of the Shares under the Act and all filing fees and other expenses in
     connection with the preparation, printing and filing of the Registration
     Statement, any Preliminary Prospectus and the Prospectus and amendments and
     supplements thereto and the mailing and delivering of copies thereof to the
     Underwriters and dealers; (ii) the cost of printing or producing any
     Agreement among Underwriters, this Agreement, the International
     Underwriting Agreement, the Agreement between Syndicates, the Selling
     Agreement, the Blue Sky Memorandum, closing documents (including
     compilations thereof)  and any other documents in connection with the
     offering, purchase, sale and delivery of the Shares; (iii) all expenses in
     connection with the qualification of the Shares for offering and sale under
     state securities laws as provided in Section 5(b) hereof, including the
     fees and disbursements of counsel for the Underwriters in connection with
     such qualification and in connection with the Blue Sky survey; (iv) all
     fees and expenses in connection with listing the Shares on NASDAQ; (v) the
     filing fees incident to, and the fees and disbursements of counsel for the
     Underwriters in connection with, securing any required review by the
     National Association of Securities Dealers, Inc. of the terms of the sale
     of the Shares; (vi) the cost of preparing stock certificates; (vii) the
     cost and charges of any transfer agent or registrar; and (viii) all other
     reasonable costs and expenses incident to the performance of its
     obligations hereunder which are not otherwise specifically provided for in
     this Section.

                                      -14-
<PAGE>
 
          (b) The Company further covenants and agrees with each of the Selling
     Stockholders and the several Underwriters that the Company will pay or
     cause to be paid (i) the fees and expenses of Alston & Bird LLP as counsel
     for such Selling Stockholder and (ii) the fees and expenses of the
     Attorneys-in-Fact and the Custodian.  It is understood, however, that each
     Selling Stockholder shall pay all other expenses and all taxes incurred by
     him in connection with the sale and delivery of the Shares to be sold by
     such Selling Stockholder to the Underwriters hereunder.  Except as provided
     in this Section and Sections 8 and 11 hereof, the Underwriters will pay all
     of their own costs and expenses, including the fees of their counsel, stock
     transfer taxes on resale of any of the Shares by them, and any advertising
     expenses connected with any offers they may make.

     7.   The obligations of the Underwriters hereunder, as to the Shares to be
delivered at each Time of Delivery, shall be subject, in their discretion, to
the condition that all representations and warranties and other statements of
the Company and of the Selling Stockholders herein are, at and as of such Time
of Delivery, true and correct, the condition that the Company and the Selling
Stockholders shall have performed all of its and their obligations hereunder
theretofore to be performed, and the following additional conditions:

          (a) The Prospectus shall have been filed with the Commission pursuant
     to Rule 424(b) within the applicable time period prescribed for such filing
     by the rules and regulations under the Act and in accordance with Section
     5(a) hereof; if the Company has elected to rely upon Rule 462(b), the Rule
     462(b) Registration Statement shall have become effective by 10:00 P.M.,
     Washington, D.C. time, on the date of this Agreement; no stop order
     suspending the effectiveness of the Registration Statement or any part
     thereof shall have been issued and, to the best knowledge of the Company,
     no proceeding for that purpose shall have been initiated or threatened by
     the Commission; and all requests for additional information on the part of
     the Commission shall have been complied with to your reasonable
     satisfaction;

          (b) King & Spalding, counsel for the Underwriters, shall have
     furnished to you such opinion or opinions (a draft of each such opinion is
     attached as Annex II(a) hereto), dated such Time of Delivery, with respect
     to the matters covered in paragraphs (i), (ii), (vi), (x) and (xii) of
     subsection (c) below as well as such other related matters as you may
     reasonably request, and such counsel shall have received such papers and
     information as they may reasonably request to enable them to pass upon such
     matters;

          (c) Alston & Bird LLP, counsel for the Company, shall have furnished
     to you their written opinion (a draft of each such opinion is attached as
     Annex II(b) hereto), dated such Time of Delivery, in form and substance
     satisfactory to you, to the effect that:

                (i) The Company has been duly incorporated and is validly
          existing as a corporation in good standing under the laws of the State
          of Delaware, with corporate power and authority to own its properties
          and conduct its business as described in the Prospectus;

                (ii) As of the date specified therein, the Company had an
          authorized capitalization as set forth under the heading
          "Capitalization" in the Prospectus, and all of the issued shares of
          capital stock of the Company (including the Shares  being delivered at
          such Time of Delivery) have been duly and validly authorized and
          issued and are fully paid and nonassessable; and the Shares conform to
          the description of the Stock contained under the caption "Description
          of Capital Stock" in the Prospectus;

                                      -15-
<PAGE>
 
                (iii)  The Company has been duly qualified as a foreign
          corporation for the transaction of business and is in good standing
          under the laws of each other jurisdiction in which it owns or leases
          properties or conducts any business so as to require such
          qualification, or is subject to no material liability or disability by
          reason of failure to be so qualified in any such jurisdiction (such
          counsel being entitled to rely in respect of the opinion in this
          clause upon certificates of appropriate officials in such
          jurisdictions and in respect of matters of fact upon certificates of
          officers of the Company, provided that such counsel shall state that
          no facts have come to their attention that lead them to believe that
          both you and they are not justified in relying upon such
          certificates);

                  (iv) each United States subsidiary of the Company has been
          duly incorporated and is validly existing as a corporation in good
          standing under the laws of its jurisdiction of incorporation; and all
          of the issued shares of capital stock of each such subsidiary have
          been duly and validly authorized and issued, are fully paid and non-
          assessable, and (except for directors' qualifying shares) are owned
          directly or indirectly by the Company, free and clear of all liens,
          encumbrances, equities or claims (such counsel being entitled to rely
          in respect of the opinion in this clause upon opinions of local
          counsel and in respect to matters of fact upon certificates of
          officers of the Company or its subsidiaries, provided that such
          counsel shall state that no facts have come to their attention that
          lead them to believe that both you and they are not justified in
          relying upon such opinions and certificates);

                (v) To the best of such counsel's knowledge and other than as
          set forth in the Prospectus, there are no legal or governmental
          proceedings pending to which the Company or any of its subsidiaries is
          a party or of which any property of the Company or any of its
          subsidiaries is the subject which, if determined adversely to the
          Company or any of its subsidiaries, would individually or in the
          aggregate have a material adverse effect on the current consolidated
          financial position, stockholders' equity or results of operations of
          the Company and its subsidiaries; and, to the best of such counsel's
          knowledge, no such proceedings are threatened or contemplated by
          governmental authorities or threatened by others;

                (vi) This Agreement and the International Underwriting Agreement
          have been duly authorized, executed and delivered by the Company;

                (vii)  The issue and sale of the Shares being delivered at such
          Time of Delivery by the Company and the compliance by the Company with
          all of the provisions of this Agreement and the International
          Underwriting Agreement and the consummation of the transactions herein
          and therein contemplated will not conflict with or result in a breach
          or violation of any of the terms or provisions of, or constitute a
          default under, any indenture, mortgage, deed of trust, loan agreement
          or other agreement or instrument known to such counsel to which the
          Company or any of its subsidiaries is a party or by which the Company
          or any of its subsidiaries is bound or to which any of the property or
          assets of the Company or any of its subsidiaries is subject and that,
          in each instance, is an exhibit to the Registration Statement (each, a
          "Material Agreement"), except for any such conflict, breach, violation
          or default which would not have a material adverse effect on the
          business, financial condition or results of operations of the Company
          and its subsidiaries taken as a whole, nor will such action result in
          any violation of the provisions of the 

                                      -16-
<PAGE>
 
          Certificate of Incorporation or By-laws of the Company or any statute
          or any order, rule or regulation known to such counsel of any court or
          governmental agency or body having jurisdiction over the Company or
          any of its subsidiaries or any of their properties;

                (viii)  No consent, approval, authorization, order, registration
          or qualification of or with any such court or governmental agency or
          body is required on the part of the Company for the issue and sale of
          the Shares or the consummation by the Company of the transactions
          contemplated by this Agreement and the International Underwriting
          Agreement, except such as have been obtained under the Act and the
          Exchange Act, and such consents, approvals, authorizations,
          registrations or qualifications as may be required under state  or
          foreign securities or Blue Sky laws in connection with the offer, sale
          and distribution of the Shares by the Underwriters and the
          International Underwriters;

                (ix) Neither the Company nor any of its subsidiaries is in
          violation of its Certificate of Incorporation or By-laws or, to the
          best of such counsel's knowledge, in default in the performance or
          observance of any material obligation, agreement, covenant or
          condition contained in any Material Agreement;

                (x) The statements set forth in the Prospectus under the caption
          Description of Capital Stock -- Common Stock" (other than the first
          sentence thereof), insofar as such statements purport to constitute a
          summary of the terms of the Stock are accurate, complete and fair;

                (xi) The Company is not an  investment company  or an entity
          controlled  by an  investment company , as such terms are defined in
          the Investment Company Act of 1940; and

                (xii)  The Registration Statement and the Prospectus and each
          amendment or supplement thereto made by the Company prior to such Time
          of Delivery (other than the financial statements and the notes thereto
          and related schedules and other financial data therein, as to which
          such counsel need express no opinion) as of their respective effective
          dates and as of such Time of Delivery comply as to form in all
          material respects with the applicable requirements of the Act and the
          rules and regulations thereunder.

               In addition, such counsel shall state that they have reviewed
          certain corporate records and other documents of the Company and the
          Selling Stockholders and have participated in conferences with
          officers and other representatives of the Company, the Selling
          Stockholders and their representatives, your representatives, the
          Company's independent public accountants and your counsel at which the
          contents of the Registration Statement and the Prospectus and related
          matters were discussed and revised.  Although such counsel have not
          independently verified, and are not passing upon and do not assume any
          responsibility for, the accuracy, completeness or fairness of the
          information and statements contained in the Registration Statement and
          the Prospectus, on the basis of the foregoing, no facts have come to
          their attention that lead them to believe that the Registration
          Statement, as of its effective date, contained any untrue statement of
          a material fact or omitted to state any material fact required to be
          stated therein or necessary to make the statements therein not
          misleading, or that the Prospectus, as of its issue date and as of
          such Time of Delivery, contained any untrue statement of a material
          fact or omitted to state a material fact necessary in order to make
          the statements therein, in light of the circumstances under which they
          were made, not misleading; provided, however, that 

                                      -17-
<PAGE>
 
          such counsel need express no belief regarding the financial statements
          and the notes thereto and the related schedules and other financial
          data contained in the Registration Statement or the Prospectus.

               In rendering such opinion, such counsel may state that they
          express no opinion as to the laws of any jurisdiction outside the
          United States.

          (d) Oppenhoff and Radler, special counsel for the Company, shall have
     furnished to you their written opinion, dated such Time of Delivery, in
     form and substance satisfactory to you, to the effect that each subsidiary
     of the Company has been duly incorporated and is validly existing as a
     corporation in good standing under the laws of its jurisdiction of
     incorporation; and all of the issued shares of capital stock of each such
     subsidiary have been duly and validly authorized and issued, are fully paid
     and non-assessable, and (except for directors' qualifying shares) are owned
     directly or indirectly by the Company, free and clear of all liens,
     encumbrances, equities or claims (such counsel being entitled to rely in
     respect of the opinion in this clause upon opinions of local counsel and in
     respect to matters of fact upon certificates of officers of the Company or
     its subsidiaries, provided that such counsel shall state that no facts have
     come to their attention that lead them to believe that both you and they
     are not justified in relying upon such opinions and certificates);

          (e) Alston & Bird LLP, counsel for the Selling Stockholders, shall
     have furnished to you their written opinion with respect to each of the
     Selling Stockholders, dated the First Time of Delivery, in form and
     substance satisfactory to you, to the effect that:

                (i) A Power of Attorney and a Custody Agreement have been duly
          executed and delivered by or on behalf of such Selling Stockholder and
          constitute valid and binding agreements of such Selling Stockholder in
          accordance with their terms (except to the extent that the rights and
          remedies created thereby may be limited by applicable bankruptcy,
          insolvency, reorganization and similar laws affecting rights and
          remedies of creditors generally);

                (ii) This Agreement and the International Underwriting Agreement
          have been duly executed and delivered by or on behalf of such Selling
          Stockholder; and the performance by such Selling Stockholder of all of
          the provisions of this Agreement and the International Underwriting
          Agreement, the Power of Attorney and the Custody Agreement and the
          consummation of the transactions herein and therein contemplated will
          not conflict with or result in a breach or violation of any terms or
          provisions of, or constitute a default by any Selling Stockholder
          under, any  indenture, mortgage, deed of trust, loan agreement or
          other material agreement or instrument known to such counsel to which
          such Selling Stockholder is a party or by which such Selling
          Stockholder is bound, or to which any of the property or assets of
          such Selling Stockholder is subject, nor will such action result in
          any violation of the provisions of the Certificate of Incorporation or
          By-laws of such Selling Stockholder if such Selling Stockholder is a
          corporation, the Partnership Agreement of such Selling Stockholder if
          such Selling Stockholder is a partnership or any order, rule or
          regulation known to such counsel of any court or governmental agency
          or body having jurisdiction over such Selling Stockholder or the
          property of such Selling Stockholder;

                (iii)  To the knowledge of such counsel, no consent, approval,
          authorization or order of any court or governmental agency or body is
          required on the part of such Selling 

                                      -18-
<PAGE>
 
          Stockholder for the consummation of the transactions contemplated by
          this Agreement and the International Underwriting Agreement in
          connection with the Shares to be sold by such Selling Stockholder
          hereunder or thereunder, except such as have been obtained under the
          Act and the Exchange Act and such as may be required under state
          securities or Blue Sky laws in connection with the offer, sale and
          distribution of such Shares by the Underwriters or the International
          Underwriters;

                (iv) To the knowledge of such counsel, each of the Selling
          Stockholders has full right, power and authority to sell, assign,
          transfer and deliver to the Underwriters the Shares to be sold by such
          Selling Stockholder, and upon delivery of such Shares to or for the
          account of the Underwriters (whom such counsel may assume to be bona
          fide purchasers as defined in Section 8-302 of the Uniform Commercial
          Code) against payment therefor as provided in the Underwriting
          Agreement, each of such Selling Stockholders will have transferred all
          rights and interests therein to the Underwriters, free and clear of
          all contractual liens, pledges, encumbrances, charges, equities,
          security interests and restrictions.

               In rendering such opinion, such counsel may state that they
          express no opinion as to the laws of any jurisdiction outside the
          United States and may rely upon a certificate of such Selling
          Stockholder in respect of matters of fact as to ownership of, and
          liens, encumbrances, equities or claims on the Shares sold by such
          Selling Stockholder, provided that such counsel shall state that they
          believe that both you and they are justified in relying upon such
          certificate;

          (f) On the date of the Prospectus at a time prior to the execution of
     this Agreement, at 9:30 a.m., New York City time, on the effective date of
     any post-effective amendment to the Registration Statement filed subsequent
     to the date of this Agreement and also at each Time of Delivery, Ernst &
     Young, LLP shall have furnished to you a letter or letters, dated the
     respective dates of delivery thereof, in form and substance satisfactory to
     you, to the effect set forth in Annex I hereto (the executed copy of the
     letter delivered prior to the execution of this Agreement is attached as
     Annex I(a) hereto and a draft of the form of letter to be delivered on the
     effective date of any post-effective amendment to the Registration
     Statement and as of each Time of Delivery is attached as Annex I(b)
     hereto);

          (g)(i)  Neither the Company nor any of its subsidiaries shall have
     sustained since the date of the latest audited financial statements
     included in the Prospectus any loss or interference with its business from
     fire, explosion, flood or other calamity, whether or not covered by
     insurance, or from any labor dispute or court or governmental action, order
     or decree, otherwise than as set forth or contemplated in the Prospectus,
     and (ii) since the respective dates as of which information is given in the
     Prospectus there shall not have been any change in the capital stock or
     long-term debt of the Company or any of its subsidiaries or any change, or
     any development involving a prospective change, in or affecting the general
     affairs, management, financial position, stockholders' equity or results of
     operations of the Company and its subsidiaries, otherwise than as set forth
     or contemplated in the Prospectus, the effect of which, in any such case
     described in Clause (i) or (ii), is in the judgment of the Representatives
     so material and adverse as to make it impracticable or inadvisable to
     proceed with the public offering or the delivery of the Shares being
     delivered at such Time of Delivery on the terms and in the manner
     contemplated in the Prospectus;

                                      -19-
<PAGE>
 
          (h) On or after the date hereof there shall not have occurred any of
     the following: (i) a suspension or material limitation in trading in
     securities generally on the New York Stock Exchange or on NASDAQ; (ii) a
     suspension or material limitation in trading in the Company's securities on
     NASDAQ; (iii) a general moratorium on commercial banking activities
     declared by either Federal or New York or Georgia State authorities; or
     (iv) the outbreak or escalation of hostilities involving the United States
     or the declaration by the United States of a national emergency or war, if
     the effect of any such event specified in this Clause (iv) in the judgment
     of the Representatives makes it impracticable or inadvisable to proceed
     with the public offering or the delivery of the Shares being delivered at
     such Time of Delivery on the terms and in the manner contemplated in the
     Prospectus;

          (i) The Shares to be sold by the Company and the Selling Stockholders
     at such Time of Delivery shall have been duly listed for quotation on
     NASDAQ;

          (j) The Company has obtained and delivered to the Underwriters
     executed copies of an agreement from certain stockholders of the Company,
     substantially to the effect set forth in Subsection 5(e) hereof in form and
     substance satisfactory to you;

          (k) The Company and the Selling Stockholders shall have furnished or
     caused to be furnished to you at such Time of Delivery certificates of
     officers of the Company and of the Selling Stockholders, respectively,
     satisfactory to you as to the accuracy of the representations and
     warranties of the Company and the Selling Stockholders, respectively,
     herein at and as of such Time of Delivery, as to the performance by the
     Company and the Selling Stockholders of all of their obligations hereunder
     to be performed at or prior to such Time of Delivery, as to the matters set
     forth in subsections (a) and (g) of this Section and as to such other
     matters as you may reasonably request; and

          (l) The Company shall have complied with the provisions of Section
     5(c) hereof with respect to the furnishing of prospectuses on the New York
     Business Day next succeeding the date of this Agreement.

     8.  (a)  The Company, Wolf J. Gaede and Dr. Joachim Hertel, jointly and
     severally, will indemnify and hold harmless each Underwriter against any
     losses, claims, damages or liabilities, joint or several, to which such
     Underwriter may become subject, under the Act or otherwise, insofar as such
     losses, claims, damages or liabilities (or actions in respect thereof)
     arise out of or are based upon an untrue statement or alleged untrue
     statement of a material fact contained in any Preliminary Prospectus, the
     Registration Statement, the Prospectus or the German Prospectus, or any
     amendment or supplement thereto, or arise out of or are based upon the
     omission or alleged omission to state therein a material fact required to
     be stated therein or necessary to make the statements therein not
     misleading, and will reimburse each Underwriter for any legal or other
     expenses reasonably incurred by such Underwriter in connection with
     investigating or defending any such action or claim as such expenses are
     incurred; provided, however, that the Company, Wolf J. Gaede and Dr.
     Joachim Hertel shall not be liable in any such case to the extent that any
     such loss, claim, damage or liability arises out of or is based upon an
     untrue statement or alleged untrue statement or omission or alleged
     omission made in any Preliminary Prospectus, the Registration Statement,
     the Prospectus or the German Prospectus or any such amendment or supplement
     in reliance upon and in conformity with written information furnished to
     the Company by or on behalf of any Underwriter through Goldman, Sachs & Co.
     expressly for use therein; provided, further, that the liability of Wolf J.
     Gaede and Dr. Joachim Hertel pursuant to this 

                                      -20-
<PAGE>
 
     subsection (a) shall not exceed the net proceeds from the sale of Shares by
     such Selling Stockholder pursuant to this Agreement and the International
     Underwriting Agreement.

          (b) Each of the Selling Stockholders (except for Wolf J. Gaede and Dr.
     Joachim Hertel) will indemnify and hold harmless each Underwriter against
     any losses, claims, damages or liabilities, joint or several, to which such
     Underwriter may become subject, under the Act or otherwise, insofar as such
     losses, claims, damages or liabilities (or actions in respect thereof)
     arise out of or are based upon an untrue statement or alleged untrue
     statement of a material fact contained in any Preliminary Prospectus, the
     Registration Statement, the Prospectus or the German Prospectus, or any
     amendment or supplement thereto, or arise out of or are based upon the
     omission or alleged omission to state therein a material fact required to
     be stated therein or necessary to make the statements therein not
     misleading, in each case to the extent, but only to the extent, that such
     untrue statement or alleged untrue statement or omission or alleged
     omission was made in any Preliminary Prospectus, the Registration
     Statement, the Prospectus or the German Prospectus or any such amendment or
     supplement in reliance upon and in conformity with written information
     furnished to the Company by such Selling Stockholder expressly for use
     therein; and will reimburse each Underwriter for any legal or other
     expenses reasonably incurred by such Underwriter in connection with
     investigating or defending any such action or claim as such expenses are
     incurred; provided, however, that such Selling Stockholder shall not be
     liable in any such case to the extent that any such loss, claim, damage or
     liability arises out of or is based upon an untrue statement or alleged
     untrue statement or omission or alleged omission made in any Preliminary
     Prospectus, the Registration Statement, the Prospectus or the German
     Prospectus or any such amendment or supplement in reliance upon and in
     conformity with written information furnished to the Company by or on
     behalf of any Underwriter through Goldman, Sachs & Co. expressly for use
     therein; provided, further, that the liability of such Selling Stockholders
     pursuant to this subsection (b) shall not exceed the net proceeds from the
     sale of Shares by such Selling Stockholder pursuant to this Agreement and
     the International Underwriting Agreement.

          (c) Each Underwriter will indemnify and hold harmless the Company and
     each Selling Stockholder against any losses, claims, damages or liabilities
     to which the Company or such Selling Stockholders may become subject, under
     the Act or otherwise, insofar as such losses, claims, damages or
     liabilities (or actions in respect thereof) arise out of or are based upon
     an untrue statement or alleged untrue statement of a material fact
     contained in any Preliminary Prospectus, the Registration Statement, the
     Prospectus or the German Prospectus, or any amendment or supplement
     thereto, or arise out of or are based upon the omission or alleged omission
     to state therein a material fact required to be stated therein or necessary
     to make the statements therein not misleading, in each case to the extent,
     but only to the extent, that such untrue statement or alleged untrue
     statement or omission or alleged omission was made in any Preliminary
     Prospectus, the Registration Statement, the Prospectus or the German
     Prospectus or any such amendment or supplement in reliance upon and in
     conformity with written information furnished to the Company by or on
     behalf of such Underwriter through Goldman, Sachs & Co. expressly for use
     therein; and will reimburse the Company and each Selling Stockholder for
     any legal or other expenses reasonably incurred by the Company or such
     Selling Stockholder in connection with investigating or defending any such
     action or claim as such expenses are incurred.

          (d) Promptly after receipt by an indemnified party under subsection
     (a), (b) or (c) above of notice of the commencement of any action, such
     indemnified party shall, if a claim in respect thereof is to be made
     against the indemnifying party under such subsection, notify the
     indemnifying party in writing of the commencement thereof; but the omission
     so to notify the 

                                      -21-
<PAGE>
 
     indemnifying party shall not relieve it from any liability which it may
     have to any indemnified party otherwise than under such subsection. In case
     any such action shall be brought against any indemnified party and it shall
     notify the indemnifying party of the commencement thereof, the indemnifying
     party shall be entitled to participate therein and, to the extent that it
     shall wish, jointly with any other indemnifying party similarly notified,
     to assume the defense thereof, with counsel reasonably satisfactory to such
     indemnified party (who shall not, except with the consent of the
     indemnified party, be counsel to the indemnifying party), and, after notice
     from the indemnifying party to such indemnified party of its election so to
     assume the defense thereof, the indemnifying party shall not be liable to
     such indemnified party under such subsection for any legal expenses of
     other counsel or any other expenses, in each case subsequently incurred by
     such indemnified party, in connection with the defense thereof other than
     reasonable costs of investigation. No indemnifying party shall, without the
     written consent of the indemnified party, effect the settlement or
     compromise of, or consent to the entry of any judgment with respect to, any
     pending or threatened action or claim in respect of which indemnification
     or contribution may be sought hereunder (whether or not the indemnified
     party is an actual or potential party to such action or claim) unless such
     settlement, compromise or judgment (i) includes an unconditional release of
     the indemnified party from all liability arising out of such action or
     claim and (ii) does not include a statement as to or an admission of fault,
     culpability or a failure to act, by or on behalf of any indemnified party.

          (e) If the indemnification provided for in this Section 8 is
     unavailable to or insufficient to hold harmless an indemnified party under
     subsection (a), (b) or (c) above in respect of any losses, claims, damages
     or liabilities (or actions in respect thereof) referred to therein, then
     each indemnifying party shall contribute to the amount paid or payable by
     such indemnified party as a result of such losses, claims, damages or
     liabilities (or actions in respect thereof) in such proportion as is
     appropriate to reflect the relative benefits received by the Company and
     the Selling Stockholders on the one hand and the Underwriters on the other
     from the offering of the Shares.  If, however, the allocation provided by
     the immediately preceding sentence is not permitted by applicable law or if
     the indemnified party failed to give the notice required under subsection
     (d) above, then each indemnifying party shall contribute to such amount
     paid or payable by such indemnified party in such proportion as is
     appropriate to reflect not only such relative benefits but also the
     relative fault of the Company and the Selling Stockholders on the one hand
     and the Underwriters on the other in connection with the statements or
     omissions which resulted in such losses, claims, damages or liabilities (or
     actions in respect thereof), as well as any other relevant equitable
     considerations.  The relative benefits received by the Company and the
     Selling Stockholders on the one hand and the Underwriters on the other
     shall be deemed to be in the same proportion as the total net proceeds from
     the offering of the Shares purchased under this Agreement (before deducting
     expenses) received by the Company and the Selling Stockholders bear to the
     total underwriting discounts and commissions received by the Underwriters
     with respect to the Shares purchased under this Agreement, in each case as
     set forth in the table on the cover page of the Prospectus. The relative
     fault shall be determined by reference to, among other things, whether the
     untrue or alleged untrue statement of a material fact or the omission or
     alleged omission to state a material fact relates to information supplied
     by the Company or the Selling Stockholders on the one hand or the
     Underwriters on the other and the parties' relative intent, knowledge,
     access to information and opportunity to correct or prevent such statement
     or omission.  The Company, each of the Selling Stockholders and the
     Underwriters agree that it would not be just and equitable if contributions
     pursuant to this subsection (e) were determined by pro rata allocation
     (even if the Underwriters were treated as one entity for such purpose) or
     by any other method of allocation which does not take account of the
     equitable considerations referred to above 

                                      -22-
<PAGE>
 
     in this subsection (e). The amount paid or payable by an indemnified party
     as a result of the losses, claims, damages or liabilities (or actions in
     respect thereof) referred to above in this subsection (e) shall be deemed
     to include any legal or other expenses reasonably incurred by such
     indemnified party in connection with investigating or defending any such
     action or claim. Notwithstanding the provisions of this subsection (e), no
     Underwriter shall be required to contribute any amount in excess of the
     amount by which the total price at which the Shares underwritten by it and
     distributed to the public were offered to the public exceeds the amount of
     any damages which such Underwriter has otherwise been required to pay by
     reason of such untrue or alleged untrue statement or omission or alleged
     omission. No person guilty of fraudulent misrepresentation (within the
     meaning of Section 11(f) of the Act) shall be entitled to contribution from
     any person who was not guilty of such fraudulent misrepresentation. The
     Underwriters' obligations in this subsection (e) to contribute are several
     in proportion to their respective underwriting obligations and not joint.

          (f) The obligations of the Company and the Selling Stockholders under
     this Section 8 shall be in addition to any liability which the Company and
     the respective Selling Stockholders may otherwise have and shall extend,
     upon the same terms and conditions, to each person, if any, who controls
     any Underwriter within the meaning of the Act; and the obligations of the
     Underwriters under this Section 8 shall be in addition to any liability
     which the respective Underwriters may otherwise have and shall extend, upon
     the same terms and conditions, to each officer and director of the Company
     and to each person, if any, who controls the Company or any Selling
     Stockholder within the meaning of the Act.

     9.  (a)  If any Underwriter shall default in its obligation to purchase the
     Shares which it has agreed to purchase hereunder at a Time of Delivery, you
     may in your discretion arrange for you or another party or other parties to
     purchase such Shares on the terms contained herein.  If within thirty-six
     hours after such default by any Underwriter you do not arrange for the
     purchase of such Shares, then the Company and the Selling Stockholders
     shall be entitled to a further period of thirty-six hours within which to
     procure another party or other parties satisfactory to you to purchase such
     Shares on such terms.  In the event that, within the respective prescribed
     periods, you notify the Company and the Selling Stockholders that you have
     so arranged for the purchase of such Shares, or the Company and the Selling
     Stockholders notify you that they have so arranged for the purchase of such
     Shares, you or the Company and the Selling Stockholders shall have the
     right to postpone such Time of Delivery for a period of not more than seven
     days, in order to effect whatever changes may thereby be made necessary in
     the Registration Statement or the Prospectus, or in any other documents or
     arrangements, and the Company agrees to file promptly any amendments to the
     Registration Statement or the Prospectus which in your opinion may thereby
     be made necessary.  The term "Underwriter" as used in this Agreement shall
     include any person substituted under this Section with like effect as if
     such person had originally been a party to this Agreement with respect to
     such Shares.

          (b) If, after giving effect to any arrangements for the purchase of
     the Shares of a defaulting Underwriter or Underwriters by you and the
     Company and the Selling Stockholders as provided in subsection (a) above,
     the aggregate number of such Shares which remains unpurchased does not
     exceed one-eleventh of the aggregate number of all the Shares to be
     purchased at such Time of Delivery, then the Company and the Selling
     Stockholders shall have the right to require each non-defaulting
     Underwriter to purchase the number of Shares which such Underwriter agreed
     to purchase hereunder at such Time of Delivery and, in addition, to require
     each non-defaulting Underwriter to purchase its pro rata share (based on
     the number of Shares which such Underwriter 

                                      -23-
<PAGE>
 
     agreed to purchase hereunder) of the Shares of such defaulting Underwriter
     or Underwriters for which such arrangements have not been made; but nothing
     herein shall relieve a defaulting Underwriter from liability for its
     default.

          (c) If, after giving effect to any arrangements for the purchase of
     the Shares of a defaulting Underwriter or Underwriters by you and the
     Company and the Selling Stockholders as provided in subsection (a) above,
     the aggregate number of such Shares which remains unpurchased exceeds one-
     eleventh of the aggregate number of all the Shares to be purchased at such
     Time of Delivery, or if the Company and the Selling Stockholders shall not
     exercise the right described in subsection (b) above to require non-
     defaulting Underwriters to purchase Shares of a defaulting Underwriter or
     Underwriters, then this Agreement (or, with respect to the Second Time of
     Delivery, the obligations of the Underwriters to purchase and of the
     Company to sell the Optional Shares) shall thereupon terminate, without
     liability on the part of any non-defaulting Underwriter or the Company or
     the Selling Stockholders, except for the expenses to be borne by the
     Company and the Selling Stockholders and the Underwriters as provided in
     Section 6 hereof and the indemnity and contribution agreements in Section 8
     hereof; but nothing herein shall relieve a defaulting Underwriter from
     liability for its default.

     10.  The respective indemnities, agreements, representations, warranties
and other statements of the Company, the Selling Stockholders and the several
Underwriters, as set forth in this Agreement or made by or on behalf of them,
respectively, pursuant to this Agreement, shall remain in full force and effect,
regardless of any investigation (or any statement as to the results thereof)
made by or on behalf of any Underwriter or any controlling person of any
Underwriter, or the Company, or any of the Selling Stockholders or any officer
or director or controlling person of the Company, or any controlling person of
any Selling Stockholder, and shall survive delivery of and payment for the
Shares.

     11.  If this Agreement shall be terminated pursuant to Section 9 hereof,
neither the Company nor the Selling Stockholders shall then be under any
liability to any Underwriter except as provided in Sections 6 and 8 hereof; but,
if for any other reason, any Shares are not delivered by or on behalf of the
Company and the Selling Stockholders as provided herein, the Company and each of
the Selling Stockholders pro rata (based on the number of Shares to be sold by
the Company and such Selling Stockholder hereunder) will reimburse the
Underwriters through you for all out-of-pocket expenses approved in writing by
you, including fees and disbursements of counsel, reasonably incurred by the
Underwriters in making preparations for the purchase, sale and delivery of the
Shares not so delivered, but the Company and the Selling Stockholders shall then
be under no further liability to any Underwriter in respect of the Shares not so
delivered except as provided in Sections 6 and 8 hereof.

     12.  In all dealings hereunder, you shall act on behalf of each of the
Underwriters, and the parties hereto shall be entitled to act and rely upon any
statement, request, notice or agreement on behalf of any Underwriter made or
given by you jointly or by Goldman, Sachs & Co. on behalf of you as the
representatives; and in all dealings with any Selling Stockholder hereunder, you
and the Company shall be entitled to act and rely upon any statement, request,
notice or agreement on behalf of such Selling Stockholder made or given by any
or all of the Attorneys-in-Fact for such Selling Stockholder.

     All statements, requests, notices and agreements hereunder shall be in
writing, and if to the Underwriters shall be delivered or sent by mail, telex or
facsimile transmission to you as the representatives in care of Goldman, Sachs &
Co., 85 Broad Street, New York, New York  10004, Attention: Registration
Department; if to any Selling Stockholder shall be delivered or sent by mail,
telex or facsimile transmission to counsel for such Selling Stockholder at its
address set forth in Schedule II hereto; and if to the Company 

                                      -24-
<PAGE>
 
shall be delivered or sent by mail, telex or facsimile transmission to the
address of the Company set forth in the Registration Statement, Attention: Jerry
W. Braxton; provided, however, that any notice to an Underwriter pursuant to
Section 8(c) hereof shall be delivered or sent by mail, telex or facsimile
transmission to such Underwriter at its address set forth in its Underwriters'
Questionnaire, or telex constituting such Questionnaire, which address will be
supplied to the Company or the Selling Stockholders by you upon request. Any
such statements, requests, notices or agreements shall take effect at the time
of receipt thereof.

     13.  This Agreement shall be binding upon, and inure solely to the benefit
of, the Underwriters, the Company and the Selling Stockholders and, to the
extent provided in Sections 8 and 10 hereof, the officers and directors of the
Company and each person who controls the Company, any Selling Stockholder or any
Underwriter, and their respective heirs, executors, administrators, successors
and assigns, and no other person shall acquire or have any right under or by
virtue of this Agreement.  No purchaser of any of the Shares from any
Underwriter shall be deemed a successor or assign by reason merely of such
purchase.

     14.  Time shall be of the essence of this Agreement.  As used herein, the
term "business day" shall mean any day when the Commission's office in
Washington, D.C.  is open for business.

     15.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK.

     16.  This Agreement may be executed by any one or more of the parties
hereto in any number of counterparts, each of which shall be deemed to be an
original, but all such counterparts shall together constitute one and the same
instrument.  

                                      -25-
<PAGE>
 
     If the foregoing is in accordance with your understanding, please sign and
return to us seven counterparts hereof, and upon the acceptance hereof by you,
on behalf of each of the Underwriters, this letter and such acceptance hereof
shall constitute a binding agreement between each of the Underwriters, the
Company and each of the Selling Stockholders. It is understood that your
acceptance of this letter on behalf of each of the Underwriters is pursuant to
the authority set forth in a form of Agreement among Underwriters (U.S.
Version), the form of which shall be submitted to the Company and the Selling
Stockholders for examination upon request, but without warranty on your part as
to the authority of the signers thereof.

     Any person executing and delivering this Agreement as Attorney-in-Fact for
a Selling Stockholder represents by so doing that he has been duly appointed as
Attorney-in-Fact by such Selling Stockholder pursuant to a validly existing and
binding Power of Attorney which authorizes such Attorney-in-Fact to take such
action.

                              Very truly yours,

                              LHS GROUP INC.


                              By: /s/ Wolf J. Gaede
                                 ------------------
                                 Wolf J. Gaede
                                 Executive Vice President


                              Selling Stockholders Named on Schedule II
 


                              By: /s/ Wolf J. Gaede
                                 ------------------
                                 Wolf J. Gaede
                                 Attorney-in-Fact

                                 As Attorney-in-Fact acting on behalf of each
                                 of the Selling Stockholders named in Schedule
                                 II to this Agreement.

Accepted as of the date hereof:

Goldman, Sachs & Co.
Robertson, Stephens & Company LLC
Cowen & Company


By: /s/ Goldman, Sachs & Co.
   -------------------------  
          (Goldman, Sachs & Co.)

On behalf of each of the Underwriters

                                      -26-
<PAGE>
 
                                   SCHEDULE I
<TABLE>
<CAPTION>
                                                           NUMBER OF OPTIONAL
                                                              SHARES TO BE
                                          TOTAL NUMBER OF     PURCHASED IF
                                            FIRM SHARES      MAXIMUM OPTION
              UNDERWRITER                 TO BE PURCHASED      EXERCISED
              -----------                
 
<S>                                       <C>              <C>
Goldman, Sachs & Co.                            1,212,830             181,926
Robertson, Stephens & Company LLC                 741,185             111,177
Cowen & Company                                   741,185             111,177
Alex. Brown & Sons Incorporated                   124,800              18,720
Donaldson, Lufkin & Jenrette Securities           124,800              18,720
Everen Securities, Inc.                           124,800              18,720
Lehman Brothers Inc.                              124,800              18,720
Montgomery Securities                             124,800              18,720
Morgan Stanley & Co. Incorporated                 124,800              18,720
Dain Bosworth Incorporated                         79,200              11,880
Interstate/Johnson Lane Corporation                79,200              11,880
Edward D Jones & Co.                               79,200              11,880
Scott & Stringfellow, Inc.                         79,200              11,880
Stephens Inc.                                      79,200              11,880
 
            Total                               3,840,000             576,000
</TABLE>

                                      -27-
<PAGE>
 
                                  SCHEDULE II
<TABLE>
<CAPTION>
 
                                               Number of Optional
                                                  Shares to be
                                   Number of        Sold if
                                  Firm Shares    Maximum Option
                                  to be Sold       Exercised
 
<S>                               <C>          <C>
The Company                         3,316,000             576,000
The Selling Stockholder(s)(a):
     Eberhard Czempiel                 36,000                   0
     Wolf J. Gaede                      8,000                   0
     Manfred Hellwig                  160,000                   0
     Dr. Joachim Hertel               240,000                   0
     Otto Wipprecht                    80,000                   0
 
            Total                   3,840,000             576,000
</TABLE>
     (a) The Selling Stockholders are represented by Alston & Bird LLP, One
Atlantic Center, 1201 West Peachtree Street, Atlanta, Georgia, 30309 and have
appointed Wolf J. Gaede as the Attorney-in-Fact for the Selling
Stockholders.

                                      -28-
<PAGE>
 
                                                                         ANNEX I

                         DESCRIPTION OF COMFORT LETTER
                    FOR REGISTRATION STATEMENTS ON FORM S-1

     Pursuant to Section 7(e) of the Underwriting Agreement, the accountants
shall furnish letters to the Underwriters to the effect that:

          (i) They are independent certified public accountants with respect to
     the Company and its subsidiaries within the meaning of the Act and the
     applicable published rules and regulations thereunder;

          (ii) In their opinion, the financial statements and any supplementary
     financial information and schedules (and, if applicable, financial
     forecasts and/or pro forma financial information) examined by them and
     included in the Prospectus or the Registration Statement comply as to form
     in all material respects with the applicable accounting requirements of the
     Act and the related published rules and regulations thereunder; and, if
     applicable, they have made a review in accordance with standards
     established by the American Institute of Certified Public Accountants of
     the unaudited consolidated interim financial statements, selected financial
     data, pro forma financial information, financial forecasts and/or condensed
     financial statements derived from audited financial statements of the
     Company for the periods specified in such letter, as indicated in their
     reports thereon, copies of which have been furnished separately to the
     representatives of the Underwriters (the "Representatives");

          (iii)  They have made a review in accordance with standards
     established by the American Institute of Certified Public Accountants of
     the unaudited condensed consolidated statements of income, consolidated
     balance sheets and consolidated statements of cash flows included in the
     Prospectus as indicated in their reports thereon copies of which have been
     separately furnished to the Representatives and on the basis of specified
     procedures including inquiries of officials of the Company who have
     responsibility for financial and accounting matters regarding whether the
     unaudited condensed consolidated financial statements referred to in
     paragraph (vi)(A)(i) below comply as to form in all material respects with
     the applicable accounting requirements of the Act and the related published
     rules and regulations, nothing came to their attention that caused them to
     believe that the unaudited condensed consolidated financial statements do
     not comply as to form in all material respects with the applicable
     accounting requirements of the Act and the related published rules and
     regulations;

          (iv) The unaudited selected financial information with respect to the
     consolidated results of operations and financial position of the Company
     for the five most recent fiscal years included in the Prospectus agrees
     with the corresponding amounts (after restatements where applicable) in the
     audited consolidated financial statements for such five fiscal years which
     were included or incorporated by reference in the Company's Annual Reports
     on Form 10-K for such fiscal years;

          (v) They have compared the information in the Prospectus under
     selected captions with the disclosure requirements of Regulation S-K and on
     the basis of limited procedures specified in such letter nothing came to
     their attention as a result of the foregoing procedures that caused them to
     believe that this information does not conform in all material respects
     with the disclosure requirements of Items 301, 302, 402 and 503(d),
     respectively, of Regulation S-K;

                                      -29-
<PAGE>
 
          (vi) On the basis of limited procedures, not constituting an
     examination in accordance with generally accepted auditing standards,
     consisting of a reading of the unaudited financial statements and other
     information referred to below, a reading of the latest available interim
     financial statements of the Company and its subsidiaries, inspection of the
     minute books of the Company and its subsidiaries since the date of the
     latest audited financial statements included in the Prospectus, inquiries
     of officials of the Company and its subsidiaries responsible for financial
     and accounting matters and such other inquiries and procedures as may be
     specified in such letter, nothing came to their attention that caused them
     to believe that:

          (A) (i) the unaudited consolidated statements of income, consolidated
     balance sheets and consolidated statements of cash flows included in the
     Prospectus do not comply as to form in all material respects with the
     applicable accounting requirements of the Act and the related published
     rules and regulations, or (ii) any material modifications should be made to
     the unaudited condensed consolidated statements of income, consolidated
     balance sheets and consolidated statements of cash flows included in the
     Prospectus for them to be in conformity with generally accepted accounting
     principles;

          (B) any other unaudited income statement data and balance sheet items
     included in the Prospectus do not agree with the corresponding items in the
     unaudited consolidated financial statements from which such data and items
     were derived, and any such unaudited data and items were not determined on
     a basis substantially consistent with the basis for the corresponding
     amounts in the audited consolidated financial statements included in the
     Prospectus;

          (C) the unaudited financial statements which were not included in the
     Prospectus but from which were derived any unaudited condensed financial
     statements referred to in Clause (A) and any unaudited income statement
     data and balance sheet items included in the Prospectus and referred to in
     Clause (B) were not determined on a basis substantially consistent with the
     basis for the audited consolidated financial statements included in the
     Prospectus;

          (D) any unaudited pro forma consolidated condensed financial
     statements included in the Prospectus do not comply as to form in all
     material respects with the applicable accounting requirements of the Act
     and the published rules and regulations thereunder or the pro forma
     adjustments have not been properly applied to the historical amounts in the
     compilation of those statements;

          (E) as of a specified date not more than five days prior to the date
     of such letter, there have been any changes in the consolidated capital
     stock (other than issuances of capital stock upon exercise of options and
     stock appreciation rights, upon earn-outs of performance shares and upon
     conversions of convertible securities, in each case which were outstanding
     on the date of the latest financial statements included in the Prospectus)
     or any increase in the consolidated long-term debt of the Company and its
     subsidiaries, or any decreases in consolidated net current assets or
     stockholders' equity or other items specified by the Representatives, or
     any increases in any items specified by the Representatives, in each case
     as compared with amounts shown in the latest balance sheet included in the
     Prospectus, except in each case for changes, increases or decreases which
     the Prospectus discloses have occurred or may occur or which are described
     in such letter; and

          (F) for the period from the date of the latest financial statements
     included in the Prospectus to the specified date referred to in Clause (E)
     there were any decreases in consolidated 

                                      -30-
<PAGE>
 
     net revenues or operating profit or the total or per share amounts of
     consolidated net income or other items specified by the Representatives, or
     any increases in any items specified by the Representatives, in each case
     as compared with the comparable period of the preceding year and with any
     other period of corresponding length specified by the Representatives,
     except in each case for decreases or increases which the Prospectus
     discloses have occurred or may occur or which are described in such letter;
     and

          (vii)  In addition to the examination referred to in their report(s)
     included in the Prospectus and the limited procedures, inspection of minute
     books, inquiries and other procedures referred to in paragraphs (iii) and
     (vi) above, they have carried out certain specified procedures, not
     constituting an examination in accordance with generally accepted auditing
     standards, with respect to certain amounts, percentages and financial
     information specified by the Representatives, which are derived from the
     general accounting records of the Company and its subsidiaries, which
     appear in the Prospectus, or in Part II of, or in exhibits and schedules
     to, the Registration Statement specified by the Representatives, and have
     compared certain of such amounts, percentages and financial information
     with the accounting records of the Company and its subsidiaries and have
     found them to be in agreement.

                                      -31-

<PAGE>
 
                                  EXHIBIT 1.2

                                 LHS GROUP INC.

                                  COMMON STOCK
                            PAR VALUE $.01 PER SHARE
                                _______________

                             UNDERWRITING AGREEMENT
                            (INTERNATIONAL VERSION)
                                _______________
                                                                    May 15, 1997

Goldman Sachs International,
Robertson, Stephens & Company LLC
Cowen & Company
 As representatives of the several Underwriters
   named in Schedule I hereto,
c/o Goldman Sachs International
Peterborough Court,
133 Fleet Street,
London EC4A 2BB, England

Ladies and Gentlemen:

     LHS Group Inc., a Delaware corporation (the "Company"), proposes, subject
to the terms and conditions stated herein, to issue and sell to the Underwriters
named in Schedule I hereto (the "Underwriters") an aggregate of 829,000 shares
and, at the election of the Underwriters, up to 144,000 additional shares of
Common Stock, par value $.01 per share (the "Stock")  of the Company and the
stockholders of the Company named in Schedule II hereto (the "Selling
Stockholders") propose, subject to the terms and conditions stated herein, to
sell to the Underwriters an aggregate of 131,000 shares of Stock.  The aggregate
of 960,000 shares to be sold by the Company and the Selling Stockholders is
herein called the "Firm Shares" and the aggregate of 144,000 additional shares
to be sold by the Company is herein called the "Optional Shares".  The Firm
Shares and the Optional Shares which the Underwriters elect to purchase pursuant
to Section 2 hereof are herein collectively called, the "Shares".

     It is understood and agreed to by all parties that the Company and the
Selling Stockholders are concurrently entering into an agreement, a copy of
which is attached hereto (the "U.S. Underwriting Agreement"), providing for the
sale by the Company and the Selling Stockholders of up to a total of 4,721,000
shares of Stock (the "U.S. Shares") including the overallotment option
thereunder, through arrangements with certain underwriters in the United States
(the "U.S. Underwriters"), for whom Goldman, Sachs & Co., Robertson, Stephens &
Company LLC and Cowen & Company are acting as representatives.  Anything herein
and therein to the contrary notwithstanding, the respective closings under this
Agreement and the U.S. Underwriting Agreement are hereby expressly made
conditional on one another.  The Underwriters hereunder and the U.S.
Underwriters are simultaneously entering into an Agreement between U.S. and
International Underwriting Syndicates (the "Agreement between Syndicates") which
provides, among other things, 

                                      -32-
<PAGE>
 
for the transfer of shares of Stock between the two syndicates and for
consultation by the Lead Managers hereunder with Goldman, Sachs & Co. prior to
exercising the rights of the Underwriters under Section 7 hereof. Two forms of
prospectus are to be used in connection with the offering and sale of shares of
Stock contemplated by the foregoing, one relating to the Shares hereunder and
the other relating to the U.S. Shares. The latter form of prospectus will be
identical to the former except for certain substitute pages as included in the
registration statement and amendments thereto as mentioned below. Except as used
in Sections 2, 3, 4, 9 and 11 herein, and except as the context may otherwise
require, references hereinafter to the Shares shall include all of the shares of
Stock which may be sold pursuant to either this Agreement or the U.S.
Underwriting Agreement, and references herein to any prospectus whether in
preliminary or final form, and whether as amended or supplemented, shall include
both of the U.S. and the international versions thereof.

     In addition, this Agreement incorporates by reference certain provisions
from the U.S. Underwriting Agreement (including the related definitions of
terms, which are also used elsewhere herein) and, for purposes of applying the
same, references (whether in these precise words or their equivalent) in the
incorporated provisions to the "Underwriters" shall be to the Underwriters
hereunder, to the "Shares" shall be to the Shares hereunder as just defined, to
"this Agreement" (meaning therein the U.S. Underwriting Agreement) shall be to
this Agreement (except where this Agreement is already referred to or as the
context may otherwise require) and to the representatives of the Underwriters or
to Goldman, Sachs & Co. shall be to the addressees of this Agreement and to
Goldman Sachs International ("GSI"), and, in general, all such provisions and
defined terms shall be applied mutatis mutandis as if the incorporated
provisions were set forth in full herein having regard to their context in this
Agreement as opposed to the U.S. Underwriting Agreement.

     1.   The Company and each of the several Selling Stockholders hereby make
to the Underwriters the same representations, warranties and agreements as are
set forth in Section 1 of the U.S. Underwriting Agreement, which Section is
incorporated herein by this reference.

     2.   Subject to the terms and conditions herein set forth, (a) the Company
and each of the Selling Stockholders agree, severally and not jointly, to sell
to each of the Underwriters, and each of the Underwriters agrees, severally and
not jointly, to purchase from the Company and each of the Selling Stockholders,
at a purchase price per share of $16.00, the number of Firm Shares (to be
adjusted by you so as to eliminate fractional shares) determined by multiplying
the aggregate number of Firm Shares to be sold by the Company and each of the
Selling Stockholders as set forth opposite their respective names in Schedule II
hereto by a fraction, the numerator of which is the aggregate number of Firm
Shares to be purchased by such Underwriter as set forth opposite the name of
such Underwriter in Schedule I hereto and the denominator of which is the
aggregate number of Firm Shares to be purchased by all the Underwriters from the
Company and all the Selling Stockholders hereunder and (b) in the event and to
the extent that the Underwriters shall exercise the election to purchase
Optional Shares as provided below, the Company agrees to issue and sell to each
of the Underwriters, and each of the Underwriters agrees, severally and not
jointly, to purchase from the Company, at the purchase price per share set forth
in clause (a) of this Section 2, that portion of the number of Optional Shares
as to which such election shall have been exercised (to be adjusted by you so as
to eliminate fractional shares) determined by multiplying such number of
Optional Shares by a fraction the numerator of which is the maximum number of
Optional Shares which such Underwriter is entitled to purchase as set forth
opposite the name of such Underwriter in Schedule I hereto and the denominator
of which is the maximum number of Optional Shares that all of the Underwriters
are entitled to purchase hereunder.

                                      -33-
<PAGE>
 
     The Company hereby grants to the Underwriters the right to purchase at
their election up to 120,000 Optional Shares, at the purchase price per share
set forth in the paragraph above, for the sole purpose of covering
overallotments in the sale of the Firm Shares.  Any such election to purchase
Optional Shares may be exercised only by written notice from you to the Company,
given within a period of 30 calendar days after the date of this Agreement,
setting forth the aggregate number of Optional Shares to be purchased and the
date on which such Optional Shares are to be delivered, as determined by you but
in no event earlier than the First Time of Delivery (as defined in Section 4
hereof) or, unless you and the Company otherwise agree in writing, earlier than
two or later than ten business days after the date of such notice.

     3.   Upon the authorization by GSI of the release of the Firm Shares, the
several Underwriters propose to offer the Firm Shares for sale upon the terms
and conditions set forth in the Prospectus and in the forms of Agreement among
Underwriters (International Version) and Selling Agreements, which have been
previously submitted to the Company by you.  Each Underwriter hereby makes to
and with the Company and the Selling Stockholders the representations and
agreements of such Underwriter as a member of the selling group contained in
Sections 3(d) and 3(e) of the form of Selling Agreements.

     4.   (a) The Shares to be purchased by each Underwriter hereunder, in
definitive form, and in such authorized denominations and registered in such
names as GSI may request upon at least forty-eight hours' prior notice to the
Company and the Selling Stockholders shall be delivered by or on behalf of the
Company and the Selling Stockholders to GSI, for the account of such
Underwriter, against payment by or on behalf of such Underwriter of the purchase
price therefor by certified or official bank check or checks, payable to the
order of the Company and the Custodian in New York Clearing House (next day)
funds.  The Company will cause the certificates representing the Shares to be
made available for checking and packaging at least twenty-four hours prior to
the Time of Delivery (as defined below) with respect thereto at the office of
GSI, 85 Broad Street, New York, New York 10004 (the  Designated Office ).  The
time and date of such delivery and payment shall be, with respect to the Firm
Shares, 9:30 a.m., New York City time, on May 21, 1997 or such other time and
date as GSI and the Company may agree upon in writing, and, with respect to the
Optional Shares, 9:30 a.m., New York City time, on the date specified by GSI in
the written notice given by GSI of the Underwriters' election to purchase such
Optional Shares, or such other time and date as GSI and the Company and the
Selling Stockholders may agree upon in writing.  Such time and date for delivery
of the Firm Shares is herein called the  First Time of Delivery , such time and
date for delivery of the Optional Shares, if not the First Time of Delivery, is
herein called the  Second Time of Delivery , and each such time and date for
delivery is herein called a  Time of Delivery .

     (b) The documents to be delivered at each Time of Delivery by or on behalf
of the parties hereto pursuant to Section 7 of the U.S. Underwriting Agreement,
including the cross receipt for the Shares and any additional documents
requested by the Underwriters pursuant to Section 7(j) of the U.S. Underwriting
Agreement hereof, will be delivered at the offices of King & Spalding, 191
Peachtree Street, Atlanta, Georgia 30303 (the  Closing Location ), and the
Shares will be delivered at the Designated Office, all at such Time of Delivery.
A meeting will be held at the Closing Location at 4:00 p.m., New York City time,
on the New York Business Day next preceding such Time of Delivery, at which
meeting the final drafts of the documents to be delivered pursuant to the
preceding sentence will be available for review by the parties hereto.  For the
purposes of this Section 4,  New York Business Day  shall mean each Monday,
Tuesday, Wednesday, Thursday and Friday which is not a day on which banking
institutions in New York are generally authorized or obligated by law or
executive order to close.

     5.   The Company hereby makes to the Underwriters the same agreements as
are set forth in Section 5 of the U.S. Underwriting Agreement, which Section is
incorporated herein by this reference.

                                      -34-
<PAGE>
 
     6.   The Company, each of the Selling Stockholders and the Underwriters
hereby agree with respect to certain expenses on the same terms as are set forth
in Section 6 of the U.S. Underwriting Agreement, which Section is incorporated
herein by this reference.

     7.   Subject to the provisions of the Agreement between Syndicates, the
obligations of the Underwriters hereunder shall be subject, in their discretion,
at each Time of Delivery, to the condition that all representations and
warranties and other statements of the Company and the Selling Stockholders
herein are, at and as of such Time of Delivery, true and correct, the condition
that the Company and the Selling Stockholders shall have performed all of their
respective obligations hereunder theretofore to be performed, and additional
conditions identical to those set forth in Section 7 of the U.S. Underwriting
Agreement, which Section is incorporated herein by this reference.

     8.   (a)  The Company, Wolf J. Gaede and Dr. Joachim Hertel, jointly and
severally, will indemnify and hold harmless each Underwriter against any losses,
claims, damages or liabilities, joint or several, to which such Underwriter may
become subject, under the Act or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based
upon an untrue statement or alleged untrue statement of a material fact
contained in any Preliminary Prospectus, the Registration Statement, the
Prospectus or the German Prospectus, or any amendment or supplement thereto, or
arise out of or are based upon the omission or alleged omission to state therein
a material fact required to be stated therein or necessary to make the
statements therein not misleading, and will reimburse each Underwriter for any
legal or other expenses reasonably incurred by such Underwriter in connection
with investigating or defending any such action or claim as such expenses are
incurred; provided, however, that the Company, Wolf J. Gaede and Dr. Joachim
Hertel shall not be liable in any such case to the extent that any such loss,
claim, damage or liability arises out of or is based upon an untrue statement or
alleged untrue statement or omission or alleged omission made in any Preliminary
Prospectus, the Registration Statement, the Prospectus or the German Prospectus
or any such amendment or supplement in reliance upon and in conformity with
written information furnished to the Company by any Underwriter through GSI
expressly for use therein; provided, further, that the liability of Wolf J.
Gaede and Dr. Joachim Hertel pursuant to this subsection (a) shall not exceed
the net proceeds from the sale of the Shares by such Selling Stockholder
pursuant to this Agreement and the U.S. International Underwriting Agreement.

     (b) Each of the Selling Stockholders except Wolf J. Gaede and Dr. Joachim
Hertel will indemnify and hold harmless each Underwriter against any losses,
claims, damages or liabilities, joint or several, to which such Underwriter may
become subject, under the Act or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based
upon an untrue statement or alleged untrue statement of a material fact
contained in any Preliminary Prospectus, the Registration Statement, the
Prospectus or the German Prospectus, or any amendment or supplement thereto, or
arise out of or are based upon the omission or alleged omission to state therein
a material fact required to be stated therein or necessary to make the
statements therein not misleading, in each case to the extent, but only to the
extent, that such untrue statement or alleged untrue statement or omission or
alleged omission was made in any Preliminary Prospectus, the Registration
Statement, the Prospectus or the German Prospectus or any such amendment or
supplement in reliance upon and in conformity with written information furnished
to the Company by such Selling Stockholder expressly for use therein; and will
reimburse each Underwriter for any legal or other expenses reasonably incurred
by such Underwriter in connection with investigating or defending any such
action or claim as such expenses are incurred; provided, however, that such
Selling Stockholder shall not be liable in any such case to the extent that any
such loss, claim, damage or liability arises out of or is based upon an untrue
statement or alleged untrue statement or omission or alleged omission made in
any Preliminary Prospectus, the Registration Statement, 

                                      -35-
<PAGE>
 
the Prospectus or the German Prospectus or any such amendment or supplement in
reliance upon and in conformity with written information furnished to the
Company by any Underwriter through GSI expressly for use therein; provided,
further, that the liability of such Selling Stockholders pursuant to this
subsection (b) shall not exceed the net proceeds from the sale of Shares sold by
such Selling Stockholder pursuant to this Agreement and the U.S. Underwriting
Agreement.

     (c) Each Underwriter will indemnify and hold harmless the Company and each
Selling Stockholder against any losses, claims, damages or liabilities to which
the Company or such Selling Stockholder may become subject, under the Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon an untrue statement or alleged
untrue statement of a material fact contained in any Preliminary Prospectus, the
Registration Statement, the Prospectus or the German Prospectus, or any
amendment or supplement thereto, or arise out of or are based upon the omission
or alleged omission to state therein a material fact required to be stated
therein or necessary to make the statements therein not misleading, in each case
to the extent, but only to the extent, that such untrue statement or alleged
untrue statement or omission or alleged omission was made in any Preliminary
Prospectus, the Registration Statement or Prospectus or any such amendment or
supplement in reliance upon and in conformity with written information furnished
to the Company by or on behalf of such Underwriter through GSI expressly for use
therein; and will reimburse the Company and each Selling Stockholder for any
legal or other expenses reasonably incurred by the Company or such Selling
Stockholder in connection with investigating or defending any such action or
claim as such expenses are incurred.

     (d) Promptly after receipt by an indemnified party under subsection (a),
(b) or (c) above of notice of the commencement of any action, such indemnified
party shall, if a claim in respect thereof is to be made against the
indemnifying party under such subsection, notify the indemnifying party in
writing of the commencement thereof; but the omission so to notify the
indemnifying party shall not relieve it from any liability which it may have to
any indemnified party otherwise than under such subsection.  In case any such
action shall be brought against any indemnified party and it shall notify the
indemnifying party of the commencement thereof, the indemnifying party shall be
entitled to participate therein and, to the extent that it shall wish, jointly
with any other indemnifying party similarly notified, to assume the defense
thereof, with counsel reasonably satisfactory to such indemnified party (who
shall not, except with the consent of the indemnified party, be counsel to the
indemnifying party), and, after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the
indemnifying party shall not be liable to such indemnified party under such
subsection for any legal expenses of other counsel or any other expenses, in
each case subsequently incurred by such indemnified party, in connection with
the defense thereof other than reasonable costs of investigation.  No
indemnifying party shall, without the written consent of the indemnified party,
effect the settlement or compromise of, or consent to the entry of any judgment
with respect to, any pending or threatened action or claim in respect of which
indemnification or contribution may be sought hereunder (whether or not the
indemnified party is an actual or potential party to such action or claim)
unless such settlement, compromise or judgment (i) includes an unconditional
release of the indemnified party from all liability arising out of such action
or claim and (ii) does not include a statement as to or an admission of fault,
culpability or a failure to act, by or on behalf of any indemnified party.

     (e) If the indemnification provided for in this Section 8 is unavailable to
or insufficient to hold harmless an indemnified party under subsection (a), (b)
or (c) above in respect of any losses, claims, damages or liabilities (or
actions in respect thereof) referred to therein, then each indemnifying party
shall contribute to the amount paid or payable by such indemnified party as a
result of such losses, claims, damages or liabilities (or actions in respect
thereof) in such proportion as is appropriate to reflect the 

                                      -36-
<PAGE>
 
relative benefits received by the Company and the Selling Stockholders on the
one hand and the Underwriters on the other from the offering of the Shares. If,
however, the allocation provided by the immediately preceding sentence is not
permitted by applicable law or if the indemnified party failed to give the
notice required under subsection (d) above, then each indemnifying party shall
contribute to such amount paid or payable by such indemnified party in such
proportion as is appropriate to reflect not only such relative benefits but also
the relative fault of the Company and the Selling Stockholders on the one hand
and the Underwriters on the other in connection with the statements or omissions
which resulted in such losses, claims, damages or liabilities (or actions in
respect thereof), as well as any other relevant equitable considerations. The
relative benefits received by the Company and the Selling Stockholders on the
one hand and the Underwriters on the other shall be deemed to be in the same
proportion as the total net proceeds from the offering of the Shares purchased
under this Agreement (before deducting expenses) received by the Company and the
Selling Stockholders bear to the total underwriting discounts and commissions
received by the Underwriters with respect to the Shares purchased under this
Agreement, in each case as set forth in the table on the cover page of the
Prospectus relating to such Shares. The relative fault shall be determined by
reference to, among other things, whether the untrue or alleged untrue statement
of a material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company or the Selling Stockholders on
the one hand or the Underwriters on the other and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission. The Company, each of the Selling Stockholders and the
Underwriters agree that it would not be just and equitable if contributions
pursuant to this subsection (e) were determined by pro rata allocation (even if
the Underwriters were treated as one entity for such purpose) or by any other
method of allocation which does not take account of the equitable considerations
referred to above in this subsection (e). The amount paid or payable by an
indemnified party as a result of the losses, claims, damages or liabilities (or
actions in respect thereof) referred to above in this subsection (e) shall be
deemed to include any legal or other expenses reasonably incurred by such
indemnified party in connection with investigating or defending any such action
or claim. Notwithstanding the provisions of this subsection (e), no Underwriter
shall be required to contribute any amount in excess of the amount by which the
total price at which the Shares underwritten by it and distributed to the public
were offered to the public exceeds the amount of any damages which such
Underwriter has otherwise been required to pay by reason of such untrue or
alleged untrue statement or omission or alleged omission. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation. The Underwriters' obligations in this subsection
(e) to contribute are several in proportion to their respective underwriting
obligations and not joint.

     (f) The obligations of the Company and the Selling Stockholders under this
Section 8 shall be in addition to any liability which the Company and the
respective Selling Stockholders may otherwise have and shall extend, upon the
same terms and conditions, to each person, if any, who controls any Underwriter
within the meaning of the Act; and the obligations of the Underwriters under
this Section 8 shall be in addition to any liability which the respective
Underwriters may otherwise have and shall extend, upon the same terms and
conditions, to each officer and director of the Company (including any person
who, with his or her consent, is named in the Registration Statement as about to
become a director of the Company) and to each person, if any, who controls the
Company or any Selling Stockholder within the meaning of the Act.

     9.   (a)  If any Underwriter shall default in its obligation to purchase
the Shares which it has agreed to purchase hereunder at a Time of Delivery, you
may in your discretion arrange for you or another party or other parties to
purchase such Shares on the terms contained herein.  If within thirty-six hours
after such default by any Underwriter you do not arrange for the purchase of
such Shares, then the 

                                      -37-
<PAGE>
 
Company and the Selling Stockholders shall be entitled to a further period of
thirty-six hours within which to procure another party or other parties
satisfactory to you to purchase such Shares on such terms. In the event that,
within the respective prescribed periods, you notify the Company and the Selling
Stockholders that you have so arranged for the purchase of such Shares, or the
Company and the Selling Stockholders notify you that they have so arranged for
the purchase of such Shares, you or the Company and the Selling Stockholders
shall have the right to postpone such Time of Delivery for a period of not more
than seven days, in order to effect whatever changes may thereby be made
necessary in the Registration Statement or the Prospectus, or in any other
documents or arrangements, and the Company agrees to file promptly any
amendments to the Registration Statement or the Prospectus which in your opinion
may thereby be made necessary. The term "Underwriter" as used in this Agreement
shall include any person substituted under this Section with like effect as if
such person had originally been a party to this Agreement with respect to such
Shares.

     (b) If, after giving effect to any arrangements for the purchase of the
Shares of a defaulting Underwriter or Underwriters by you and the Company and
the Selling Stockholders as provided in subsection (a) above, the aggregate
number of such Shares which remains unpurchased does not exceed one-eleventh of
the aggregate number of all the Shares to be purchased at such Time of Delivery,
then the Company and the Selling Stockholders shall have the right to require
each non-defaulting Underwriter to purchase the number of shares which such
Underwriter agreed to purchase hereunder at such Time of Delivery and, in
addition, to require each non-defaulting Underwriter to purchase its pro rata
share (based on the number of Shares which such Underwriter agreed to purchase
hereunder) of the Shares of such defaulting Underwriter or Underwriters for
which such arrangements have not been made; but nothing herein shall relieve a
defaulting Underwriter from liability for its default.

     (c) If, after giving effect to any arrangements for the purchase of the
Shares of a defaulting Underwriter or Underwriters by you and the Company and
the Selling Stockholders as provided in subsection (a) above, the aggregate
number of such Shares which remains unpurchased exceeds one-eleventh of the
aggregate number of all the Shares to be purchased at such Time of Delivery, or
if the Company and the Selling Stockholders shall not exercise the right
described in subsection (b) above to require non-defaulting Underwriters to
purchase Shares of a defaulting Underwriter or Underwriters, then this Agreement
(or, with respect to the Second Time of Delivery, the obligation of the
Underwriters to purchase and of the Company to sell the Optional Shares) shall
thereupon terminate, without liability on the part of any non-defaulting
Underwriter or the Company or the Selling Stockholders, except for the expenses
to be borne by the Company and the Selling Stockholders and the Underwriters as
provided in Section 6 hereof and the indemnity and contribution agreements in
Section 8 hereof; but nothing herein shall relieve a defaulting Underwriter from
liability for its default.

     10.  The respective indemnities, agreements, representations, warranties
and other statements of the Company, the Selling Stockholders and the several
Underwriters, as set forth in this Agreement or made by or on behalf of them,
respectively, pursuant to this Agreement, shall remain in full force and effect,
regardless of any investigation (or any statement as to the results thereof)
made by or on behalf of any Underwriter or any controlling person of any
Underwriter, or the Company or any of the Selling Stockholders, or any officer
or director or controlling person of the Company or any controlling person of
any Selling Stockholders, and shall survive delivery of and payment for the
Shares.

     11.  (a) The Company has, together with Goldman, Sachs & Co. oHG,
Frankfurt/Main, and BHF-BANK Aktiengesellschaft, Frankfurt/Main, applied for
admission of (i) 20,050,000 shares of Common Stock that are currently
outstanding, (ii) up to 4,145,000 shares of Common Stock to be newly issued at
the First Time of Delivery, (iii) up to 720,000 shares of Common Stock under the
overallotment 

                                      -38-
<PAGE>
 
option and (iv) up to 2,954,500 shares of Common Stock reserved for issuance
pursuant to stock options of the Company (collectively, the "Frankfurt Shares")
on the Frankfurt Stock Exchange (the "FSE") to the Regulated Market (Geregelter
Markt) and quotation of the shares in the New Market (Neuer Markt).

     (b) The Company hereby appoints Goldman, Sachs & Co. oHG as its listing
agent (the "Listing Agent") and BHF-BANK Aktiengesellschaft as co-listing agent
(the "Co-Listing Agent"; together with the Listing Agent, the "Listing Agents")
in respect of the Frankfurt Shares.  The Listing Agents shall have the powers
and authority granted to and conferred upon it in this Section 11.  The Listing
Agents, together with the Company, shall make all arrangements necessary to
obtain the listing and shall sign the German Prospectus.

     (c) The Company hereby undertakes to provide the Listing Agents with such
information and documents as the Listing Agents shall reasonably request in
connection with the Frankfurt Shares and any publications to be made to holders
of Frankfurt Shares.

     (d) Public notices to be made with respect to the Frankfurt Shares
according to the rules and regulations of the Frankfurt Stock Exchange shall be
made and arranged for by the Listing Agents acting on behalf and at the expense
of the Company provided that the Company has duly informed the Listing Agents of
the time and the contents of any such notice.  The Listing Agents shall be under
no obligation to inquire as to whether any such notice must be given.  The
Company shall reimburse the Listing Agent for all publication expenses incurred
by the Listing Agent in accordance with this Section 11(d).

     (e) The Company will indemnify and hold harmless the Listing Agents against
any losses, claims, damages, liabilities, to which the Listing Agents may become
subject insofar as such losses, claims, damages or liabilities arise out of its
services as Listing Agents, except such as may result from the Listing Agents
failing to act in accordance with sound business practices, and will reimburse
the Listing Agents for legal or other expenses reasonably incurred by them in
connection with investigating or defending any such action or claim as such
expenses are incurred, provided, however, that the Company shall not be liable
in any such case to the extent that any such loss, claim, damage or liability
arises out of or is based upon an untrue statement or alleged untrue statement
or omission or alleged omission made in any Preliminary Prospectus, the
Registration Statement, the Prospectus or the German Prospectus or any such
amendment or supplement in reliance upon and in conformity with written
information furnished to the Company by the Listing Agents or GSI expressly for
use therein.

     (f) The Listing Agents will indemnify and hold harmless the Company and
each Selling Stockholder against any losses, claims, damages or liabilities to
which the Company or such Selling Stockholder may become subject, under the Act
or otherwise, insofar as such losses, claims, damages or liabilities (or actions
in respect thereof) arise out of or are based upon an untrue statement or
alleged untrue statement of a material fact contained in any Preliminary
Prospectus, the Registration Statement, the Prospectus or the German Prospectus,
or any amendment or supplement thereto, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, in
each case to the extent, but only to the extent, that such untrue statement or
alleged untrue statement or omission or alleged omission was made in any
Preliminary Prospectus, the Registration Statement, the Prospectus or the German
Prospectus or any such amendment or supplement in reliance upon and in
conformity with written information furnished to the Company by GSI or the
Listing Agents expressly for use therein; and will reimburse the Company and
each Selling Stockholder for any legal or other expenses reasonably incurred by
the Company or such Selling Stockholder in connection with investigating or
defending any such action or claim as such expenses are incurred.

                                      -39-
<PAGE>
 
     (g) Sections 8(d) and (e) shall apply mutatis mutandis in respect of the
Company and the Listing Agents.

     12.  If this Agreement shall be terminated pursuant to Section 9 hereof,
neither the Company nor the Selling Stockholders shall then be under any
liability to any Underwriter except as provided in Section 6 and Section 8
hereof, but, if for any other reason any Shares are not delivered by or on
behalf of the Company and the Selling Stockholders as provided herein, the
Company and each of the Selling Stockholders pro rata (based on the number of
Shares to be sold by the Company and such Selling Stockholder hereunder) will
reimburse the Underwriters through GSI for all out-of-pocket expenses approved
in writing by GSI, including fees and disbursements of counsel, reasonably
incurred by the Underwriters in making preparations for the purchase, sale and
delivery of the Shares not so delivered, but the Company and the Selling
Stockholders shall then be under no further liability to any Underwriter in
respect of the Shares not so delivered except as provided in Sections 6 and 8
hereof.

     13.  In all dealings hereunder, you shall act on behalf of each of the
Underwriters, and the parties hereto shall be entitled to act and rely upon any
statement, request, notice or agreement on behalf of any Underwriter made or
given by you jointly or by GSI on behalf of you as the representatives of the
Underwriters; and in all dealings with any Selling Stockholder hereunder, you
and the Company shall be entitled to act and rely upon any statement, request,
notice or agreement on behalf of such Selling Stockholder made or given by any
or all of the Attorneys-in-Fact for such Selling Stockholder.

     All statements, requests, notices and agreements hereunder shall be in
writing, and if to the Underwriters shall be delivered or sent by mail, telex or
facsimile transmission to the Underwriters in care of GSI, Peterborough Court,
133 Fleet Street, London EC4A 2BB, England, Attention: Equity Capital Markets,
Telex No. 94012165, facsimile transmission No. (071) 774-1550; if to any Selling
Stockholder shall be delivered or sent by mail, telex or facsimile transmission
to counsel for such Selling Stockholder at its address set forth in Schedule II
hereto; and if to the Company shall be delivered or sent by registered mail,
telex or facsimile transmission to the address of the Company set forth in the
Registration Statement, Attention: Secretary; provided, however, that any notice
to an Underwriter pursuant to Section 8(c) hereof shall be delivered or sent by
mail, telex or facsimile transmission to such Underwriter at its address set
forth in its Underwriters' Questionnaire, or telex constituting such
Questionnaire, which address will be supplied to the Company or the Selling
Stockholders by GSI upon request.  Any such statements, requests, notices or
agreements shall take effect upon receipt thereof.

     14.  This Agreement shall be binding upon, and inure solely to the benefit
of, the Underwriters, the Company and the Selling Stockholders and, to the
extent provided in Sections 8 and 10 hereof, the officers and directors of the
Company and each person who controls the Company, any Selling Stockholder or any
Underwriter, and their respective heirs, executors, administrators, successors
and assigns, and no other person shall acquire or have any right under or by
virtue of this Agreement. No purchaser of any of the Shares from any Underwriter
shall be deemed a successor or assign by reason merely of such purchase.

     15.  Time shall be of the essence of this Agreement.

     16.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK, UNITED STATES OF AMERICA.

                                      -40-
<PAGE>
 
     17.  This Agreement may be executed by any one or more of the parties
hereto in any number of counterparts, each of which shall be deemed to be an
original, but all such counterparts shall together constitute one and the same
instrument.  

                                      -41-
<PAGE>
 
     If the foregoing is in accordance with your understanding, please sign and
return to us seven counterparts hereof, and upon the acceptance hereof by you,
on behalf of each of the Underwriters, this letter and such acceptance hereof
shall constitute a binding agreement among each of the Underwriters, the Company
and the Selling Stockholders. It is understood that your acceptance of this
letter on behalf of each of the Underwriters is pursuant to the authority set
forth in a form of Agreement among Underwriters (International Version), the
form of which shall be furnished to the Company and the Selling Stockholders for
examination upon request, but without warranty on your part as to the authority
of the signers thereof.

     Any person executing and delivering this Agreement as Attorney-in-Fact for
a Selling Stockholder represents by so doing that he has been duly appointed as
Attorney-in-Fact by such Selling Stockholder pursuant to a validly existing and
binding Power of Attorney which authorizes such Attorney-in-Fact to take such
action

                              Very truly yours,

                              LHS Group Inc.


                              By: /s/ Wolf J. Gaede
                                 ------------------
                                 Wolf J. Gaede
                                 Executive Vice President

                              Selling Stockholders Named on Schedule II
 

                              By: /s/ Wolf J. Gaede
                                 ------------------
                                  Wolf J. Gaede
                                  Attorney-in-Fact

                           As Attorney-in-Fact acting on behalf of each of the
                                Selling Stockholders named in Schedule II to
                                this Agreement.


Accepted as of the date hereof:

Goldman Sachs International
Robertson, Stephens & Company LLC
Cowen & Company

By: Goldman Sachs International


By: /s/ Pamela Torres
   ------------------
             (Attorney-in-fact)

              On behalf of each of the Underwriters

                                      -42-
<PAGE>
 
                      SIGNATURE PAGE OF THE LISTING AGENTS



Accepted as of the date hereof:


By: /s/ Hanne Merott-Poulsen
   -------------------------
          (Attorney-in-fact)

on behalf of Goldman, Sachs & Co. oHG
in its capacity as Listing Agent


By: /s/ Rainer Lizon
   ---------------------------------------


By: /s/ Bernard Walbrecht
   ----------------------
       (Attorneys-in-fact)

on behalf of BHF-BANK Aktiengesellschaft
in its capacity as Co-Listing Agent

                                      -43-
<PAGE>
 
                                   SCHEDULE I
<TABLE>
<CAPTION>
 
                                                      Number of Optional
                                                         Shares to be
                                     Total Number of     Purchased if
                                       Firm Shares      Maximum Option
            Underwriter              to be Purchased      Exercised
            -----------            
 
<S>                                  <C>              <C>
Goldman, Sachs International                 240,000              36,000
Robertson, Stephens & Company LLC            240,000              36,000
Cowen & Company                              240,000              36,000
Banque Nationale de Paris                     60,000               9,000
BHF Bank                                      60,000               9,000
ING Barings                                   60,000               9,000
Yamaichi International Europe                 60,000               9,000
 
 
            Total                            960,000             144,000
</TABLE>

                                      -44-
<PAGE>
 
                                  SCHEDULE II
<TABLE>
<CAPTION>
 
                                                   Number of Optional
                                                      Shares to be

                                  Total Number of       Sold if
                                    Firm Shares      Maximum Option
                                    to be Sold         Exercised
 
<S>                               <C>              <C>
The Company                               829,000             144,000
The Selling Stockholder(s)(a):
     Eberhard Czempiel                      9,000                   0
     Wolf J. Gaede                          2,000                   0
     Manfred Hellwig                       40,000                   0
     Dr. Joachim Hertel                    60,000                   0
     Otto Wipprecht                        20,000                   0
 
            Total                         960,000             144,000
</TABLE>
     (a) The Selling Stockholders are represented by Alston & Bird, One Atlantic
Center, 1201 West Peachtree Street, Atlanta, Georgia, 30309 and has appointed
Wolf J. Gaede as the Attorney-in-Fact for the Selling Stockholders.

                                      -45-


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