PREFERRED NETWORKS INC
SC 13D/A, 1998-03-24
RADIOTELEPHONE COMMUNICATIONS
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                                           SECURITIES AND EXCHANGE COMMISSION
                                              Washington, D.C. 20549

                                                   Schedule 13D

                                     Under the Securities Exchange Act of 1934
                                                (Amendment No. 1)*



                                             Preferred Networks, Inc.
                                                 (Name of Issuer)

                                     Common Stock, par value $.0001 per share
                                          (Title of Class of Securities)

                                                     73990510
                                                  (CUSIP Number)

                                             Thomas R. Stephens, Esq.
                                       Bartlit Beck Herman Palenchar & Scott
                                          511 Sixteenth Street Suite 700
                                               Denver, Colorado 80202
                                                  (303) 592-3100
                               (Name, Address and Telephone Number of Person
                            Authorized to Receive Notices and Communications)

                                                  March 17, 1998
                        (Date of Event which Requires Filing of this Statement)



If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box.

Note:  Six  copies  of  this  statement,  including  all  exhibits,  should  be
filed  with  the  Commission.  See Rule 13d-1(a) for other parties to whom 
copies are to be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

                                          (Continued on following page(s))

                                                  Page 1 of 9 Pages


<PAGE>


CUSIP No.  73990510        13D                  Page  2     of    9     Pages
         

      1        NAME OF REPORTING PERSON
               S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
              
               Centennial Fund IV, L.P.

      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                (a)

                (b)

      3        SEC USE ONLY


      4        SOURCE OF FUNDS*

               WC

      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEMS 2(D) OR 2(E)
 

      6        CITIZENSHIP OR PLACE OF ORGANIZATION
    
               Delaware

              NUMBER OF                   7     SOLE VOTING POWER

               SHARES                           4,774,910

                                          8     SHARED VOTING POWER
            BENEFICIALLY

              OWNED BY                          0

                                          9     SOLE DISPOSITIVE POWER
                EACH

              REPORTING                         4,774,910

                                          10    SHARED DISPOSITIVE POWER
               PERSON

                WITH                            0

     11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               4,774,910

     12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
               SHARES*
               
     13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
               23.9%

     14        TYPE OF REPORTING PERSON*
                             PN

                     * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


     1        NAME OF REPORTING PERSON
               S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
               
               Centennial Holdings IV, L.P.

      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF GROUP*
                       (a)
                       (b)

      3        SEC USE ONLY


      4        SOURCE OF FUNDS*
            
               Not applicable

      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEMS 2(D) OR 2(E)
 

      6        CITIZENSHIP OR PLACE OF ORGANIZATION
              
               Delaware

              NUMBER OF                   7     SOLE VOTING POWER

               SHARES                           4,774,910

                                          8     SHARED VOTING POWER
            BENEFICIALLY

              OWNED BY                          0

                                          9     SOLE DISPOSITIVE POWER
                EACH

              REPORTING                         4,774,910

                                         10     SHARED DISPOSITIVE POWER
               PERSON

                WITH                            0

     11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               4,774,910

     12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
               SHARES*
               
     13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
               23.9%

     14        TYPE OF REPORTING PERSON*
               PN
                     * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>




                                Page 4 of 9 Pages

                             Introductory Statement

                  This  amended  statement on Schedule 13D relates to the Common
Stock,  no par value (the  "Shares"),  of  Preferred  Networks,  Inc., a Georgia
corporation  (the  "Company").  Items  2, 3,  4,  5, 6 and 7 of this  statement,
previously filed by (i) Centennial Fund IV, L.P., a Delaware limited partnership
("Centennial  IV"), as direct  beneficial  owner of Shares,  and (ii) Centennial
Holdings IV, L.P., a Delaware limited partnership  ("Holdings IV"), by virtue of
the relationships  described previously in this statement,  is hereby amended as
set forth below.


Item 2.  Identity and Background.

                  No change except for the addition of the following:

                  On September 30, 1997, G. Jackson Tankersley, Jr. resigned as 
a general partner of Holdings IV.


Item 3.  Source and Amount of Funds or Other Consideration.

                  No change except for the addition of the following:

                  The total amount of funds required by Centennial IV to acquire
the shares of the Class B Redeemable  Preferred Stock (the "Class B Shares") and
the Company's  warrants to acquire common stock (the "1998 Warrants")  described
in Item 5(c) was  $169,000.50.  Such  funds were  provided  by  Centennial  IV's
capital available for investment.


Item 4.  Purpose of Transaction

                  No change except for the addition of the following:

                  Centennial  IV acquired  the Class B Shares and 1998  Warrants
reported in Item 5(c) for investment  only.  Depending upon their  evaluation of
the  Company's   investments  and  prospects,   and  upon  future   developments
(including, but not limited to, market for the Class B Shares and 1998 Warrants,
the effective yield on the Class B Shares,  availability  of funds,  alternative
uses of funds, and money, stock market and general economic conditions), each of
the Reporting  Persons may from time to time purchase Class B Shares and/or 1998
Warrants, dispose of all or a portion of the Class B Shares and/or 1998 Warrants
that it holds,  or cease buying or selling Class B Shares and/or 1998  Warrants.
Any  such  additional  purchases  or sales of the  Class B  Shares  and/or  1998
Warrants  may  be  in  open  market  or  privately-negotiated   transactions  or
otherwise.

                  On  March  17,  1998,  Centennial  IV  entered  into a Class B
Redeemable Preferred Stock Purchase Agreement (the "Class B Purchase Agreement")
with the Company and certain  other  investors  pursuant to which  Centennial IV
acquired,  for an aggregate purchase price of $169,000,  112,667 Class B Shares,
and 114,075 1998 Warrants.

                  The Class B Shares are entitled to a liquidation preference of
$1.50 per share plus  accrued  dividends.  Dividends  on the Class B Shares will
accrue at the rate of $.15 per share annually, in preference to any dividends on
the Shares and any other class ranking junior to the Class B Shares. The Class B
Shares  will be  entitled  to one vote per  share and will be  entitled  to vote
together  with the common stock on matters  submitted to a vote of the Company's
stockholders.  In addition,  the Class B Shares will be entitled to a class vote
on certain matters,  including without  limitation  repurchases of common stock,
material  changes in the Company's  line of business,  entering into any merger,
consolidation or amalgamation, sale of all or substantially all of the Company's
assets,   acquisitions   of  more  than   $5,000,000,   and  incurring   certain
indebtedness.  The Class B Shares are redeemable at any time by the Company at a
price equal to $1.50 plus accrued  dividends,  and each holder of Class B Shares
may require that its Class B Shares be redeemed at any time after March 17, 2003
or earlier in certain circumstances.  The holders of Class B Shares are entitled
to preemptive rights in connection with any new issuance of equity securities by
the Company in a private placement.  In addition,  the holders of Class B Shares
are entitled to elect one director.

                  Each 1998  Warrant  permits a holder to  acquire,  at any time
during  the five year  period  commencing  on March 17,  1998,  one Share for an
exercise price of $1.50 per Share, subject to adjustment as provided in the form
of the 1998 Warrant.  Payment of the exercise price may be made in cash, debt or
equity securities of the Company, or by withholding from the Shares otherwise to
be  delivered  upon  exercise a number of Shares which have a value equal to the
exercise price. Under some circumstances the holders of the 1998 Warrants may be
required to exercise the 1998 Warrants prior to their expiration.

                  Pursuant to the Class B Purchase Agreement,  Centennial IV and
the  Company  and  certain  other   stockholders  of  the  Company  amended  the
Registration  Rights Agreement dated as of June 21, 1995, among such persons, as
amended  (the  "1998  Registration  Rights  Amendment"),  pursuant  to which the
holders of 1998  Warrants  will have the right to  exercise  certain  demand and
piggyback   registration  rights  with  respect  to,  and,  subject  to  certain
restrictions,  the Company will be required to register,  the Shares  obtainable
upon exercise of the 1998 Warrants.

                  Pursuant to the Class B Purchase Agreement, the Company, among
other things, (i) made certain  representations  and warranties to the investors
acquiring  Class B  Shares  and 1998  Warrants,  (ii)  agreed  to  provide  such
investors with certain  inspection and information  rights,  and (iii) agreed to
reimburse such investors for certain expenses.

                  The foregoing summaries of the Class B Purchase Agreement, the
rights and preferences of the Class B Shares, the terms of the 1998 Warrants and
the 1998  Registration  Rights  Amendment  are  qualified  in their  entirety by
reference to the Class B Purchase  Agreement  attached hereto as Exhibit 10, the
rights and  preferences of the Class B Shares attached hereto as Exhibit 11, the
form of the 1998  Warrant  attached  hereto as Exhibit 12, and the  Registration
Rights Amendment attached hereto as Exhibit 13, respectively.

                  Except as  described  in this  Item 4,  none of the  Reporting
Persons  nor any of the  Officers  and  Partners  has  formulated  any  plans or
proposals which relate to or would result in any matter required to be disclosed
in response to paragraphs (a) through (j) of Item 4 of Schedule 13D.


Item 5.  Interest in Securities of the Issuer.

                  No change except for the addition of the following:

                  (a) Centennial IV is the direct  beneficial owner of 1,507,502
Shares.   3,603,333   warrants   issued  in  1997  and  114,075  1998   Warrants
(collectively,  the "Warrants"),  or  approximately  23.9% of the sum of (i) the
16,270,028  Shares  deemed  outstanding  as of  March  17,  1998,  according  to
information received from the Company plus (ii) such Warrants.  By virtue of the
relationships  previously  reported under Item 2 of this Statement,  Holdings IV
may be deemed to have indirect  beneficial  ownership of the Shares and Warrants
directly beneficially owned by Centennial IV.

                  (b)   Centennial  IV  has  the  direct  power  to  direct  the
disposition  of and vote the  Shares and  Warrants  held by it. By virtue of the
relationships  described in Item 2 of this Statement,  Holdings IV may be deemed
to have the indirect power to vote and direct the  disposition of the Shares and
Warrants held by Centennial IV.

                  (c) On March 17,  1998,  Centennial  IV  acquired  the Class B
Shares  and  the  1998  Warrants  described  in Item 3 of  this  Statement  in a
privately negotiated transaction with the Company for aggregate consideration of
$169,000.50.

                  Except as set forth above,  none of the Reporting  Persons has
effected any  transaction  in the Shares during the
past 60 days.

                  (d)  Centennial  IV has the right to receive  and the power to
direct the receipt of dividends  from, and proceeds from the sale of, the Shares
and Warrants held by it, and, by virtue of the relationships  reported in Item 2
of this  Statement,  Holdings  IV has the power to direct  receipt of  dividends
from,  and the  proceeds  from the sale of,  the  Shares  and  Warrants  held by
Centennial IV.

                  (e)      Not applicable.


Item 6.           Contracts, Arrangements, Understandings or Relationships With 
Respect to Securities of the Issuer.

                  No change except for the addition of the following:

                  The  information  included  under Item 4 of this  statement on
Schedule  13D in  connection  with the Class B Purchase  Agreement,  the Class B
Shares,  the 1998 Warrant and the 1998  Registration  Rights Amendment is hereby
incorporated in its entirety by this reference.

                  Other than set forth above,  none of the Reporting Persons has
any contract,  arrangement,  understanding or relationship  (legal or otherwise)
with any person with respect to  securities of the Company,  including,  but not
limited to,  transfer or voting of any such  securities,  finder's  fees,  joint
ventures,  loans or option arrangements,  puts or calls,  guarantees of profits,
division of profits or losses, or the giving or withholding of proxies.


Item 7.  Material to be Filed as Exhibits.

                  No change except the addition of the following:

                  Exhibit  10.  Class  B  Redeemable  Preferred  Stock  Purchase
                  Agreement dated as of March 17, 1998 among Alta Communications
                  IV, Alta Comm S By S, LLC,  Centennial  Fund IV,  L.P.,  Fleet
                  Equity  Partners  VI, L.P.,  Fleet  Venture  Resources,  Inc.,
                  Chisholm Partners II, L.P.,  Saugatuck Capital Company Limited
                  Partnership  III, PNC Capital  Corp.,  Primus Capital Fund III
                  Limited  Partnership,  certain  other  investors and Preferred
                  Networks, Inc.

                  Exhibit 11. Articles of Amendment setting forth the rights and
                  preferences  of the  Class B  Redeemable  Preferred  Stock  of
                  Preferred Networks, Inc.

                  Exhibit 12. Form of Common Stock Purchase Warrant to be issued
                  pursuant to the Class B Redeemable  Preferred  Stock  Purchase
                  Agreement dated as of March 17, 1998 among Alta Communications
                  IV, Alta Comm S By S, LLC,  Centennial  Fund IV,  L.P.,  Fleet
                  Equity  Partners  VI, L.P.,  Fleet  Venture  Resources,  Inc.,
                  Chisholm Partners II, L.P.,  Saugatuck Capital Company Limited
                  Partnership  III, PNC Capital  Corp.,  Primus Capital Fund III
                  Limited  Partnership,  certain  other  investors and Preferred
                  Networks, Inc.

                  Exhibit 13. Form of Amendment to Registration Rights Agreement
                  dated June 21, 1995 among Alta  Communications IV, Alta Comm S
                  By S, LLC, Centennial Fund IV, L.P., Fleet Equity Partners VI,
                  L.P., Fleet Venture  Resources,  Inc.,  Chisholm  Partners II,
                  L.P.,  Saugatuck Capital Company Limited  Partnership III, PNC
                  Capital Corp.,  Primus  Capital Fund III limited  partnership,
                  Preferred Networks, Inc., and certain other persons.




<PAGE>





                                          Signature

                  After  reasonable  inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  statement is true,
complete and correct.


Date:  March 23, 1998      /s/ Jeffrey Schutz
                           Jeffrey   Schutz,   as  general  partner  of
                           Centennial   Holdings  IV,   L.P.,   general
                           partner of Centennial Fund IV, L.P.







<PAGE>


                           EXHIBIT 10 TO SCHEDULE 13D


                            PREFERRED NETWORKS, INC.

          CLASS B SENIOR REDEEMABLE PREFERRED STOCK PURCHASE AGREEMENT
                                 MARCH 17, 1998



         This CLASS B SENIOR REDEEMABLE PREFERRED STOCK PURCHASE AGREEMENT dated
as of March 17, 1998 (together with the Exhibits and Schedules  attached hereto,
the  "AGREEMENT")  is entered  into by and among  Preferred  Networks,  Inc.,  a
Georgia corporation,  with its current principal place of business at 850 Center
Way, Norcross,  GA 30071 (the "COMPANY"),  and the persons and entities named in
the Schedule of Investors designated as Exhibit A hereto (collectively  referred
to as the "INVESTORS" and individually referred to as an "INVESTOR").

         1.       PURCHASE, SALE AND TERMS OF PURCHASED SHARES.

         1.1. The Purchased Shares and Warrants. The Company has duly authorized
the  issuance  and sale to the  Investors  for an  aggregate  purchase  price of
$8,000,004 of (a) an aggregate of 5,333,336  shares (the "PURCHASED  SHARES") of
its authorized Class B Senior Redeemable Preferred Stock (the "CLASS B PREFERRED
STOCK") and (b) the issuance of common stock purchase  warrants (the "WARRANTS")
to be in substantially the form of Exhibit B attached hereto for the purchase of
an aggregate of 5,400,000  shares of the Company's  common  stock,  no par value
(the "COMMON STOCK").  The designations,  rights and preferences and other terms
and  conditions  relating  to the  Class B  Preferred  Stock are as set forth in
Exhibit  C  attached   hereto.   The  Purchased  Shares  and  the  Warrants  are
collectively referred to herein as the "SECURITIES".

         1.2 Purchase and Sale of the  Purchased  Shares and the  Warrants.  The
Company  agrees  to issue  and sell to the  Investors,  and,  subject  to and in
reliance  upon the  representations,  warranties,  terms and  conditions of this
Agreement,  the  Investors,  severally  but not jointly,  agree to purchase that
number of Purchased  Shares and Warrants for the purchase  price (the  "PURCHASE
PRICE") set forth opposite their  respective names in Exhibit A hereto under the
respective  headings "PURCHASED SHARES" "WARRANTS" and "AGGREGATE PURCHASE PRICE
FOR  SECURITIES."  The  Purchase  Price shall be paid in  immediately  available
funds.

         1.3 Closing.  The consummation of the purchase and sale (the "CLOSING")
shall occur  concurrently  herewith (the "CLOSING  DATE").  At the Closing,  the
Company  shall  deliver  to each  Investor  a  certificate  for that  number  of
Purchased Shares and a Warrant  exercisable into that number of shares of Common
Stock set forth  opposite  such  Investor's  name in  Exhibit A hereto,  against
delivery to the Company of the Purchase Price.

         1.4 Use of Proceeds.  The Company  agrees to use the proceeds  from the
sale of the Purchased  Shares and the Warrants for construction of the Company's
paging system networks and for general working capital  purposes for the Company
and its Subsidiaries.

         1.5 Covenants of the Company Prior to Closing. The Company shall do all
things  necessary to fulfill the  conditions to purchase set forth in Sections 2
and 3 of this Agreement, including, without limitation, holding such meetings of
shareholders  as are required to obtain the required  shareholder  approvals and
taking all actions  necessary  to comply with the  applicable  federal and state
securities laws in connection with obtaining such approvals.

         2.       CONDITIONS OF PURCHASE.

         The  obligations of each Investor under Article 1 of this Agreement are
subject to the  compliance by the Company with its agreements  herein  contained
and to the fulfillment on or before the Closing of the following conditions:

         2.1  Opinion  of  Counsel.  The  Investors  shall  have  received  from
Sutherland,  Asbill & Brennan,  counsel for the Company,  its favorable opinion,
dated the Closing  Date,  in form and  substance  reasonably  acceptable  to the
Investors and the Investors' counsel.

         2.2 Authorization;  Consents. The Board of Directors of the Company and
an  independent  committee  of the Board of  Directors  shall have duly  adopted
resolutions  in form  satisfactory  to the Investors and shall have received all
necessary  approvals of shareholders  of the Company  authorizing the Company to
consummate the  transactions  contemplated  hereby in accordance  with the terms
hereof, and the Investors shall have received a duly executed certificate of the
Secretary  or an  Assistant  Secretary  of the Company  dated the  Closing  Date
setting  forth a copy of such  resolutions  and  such  other  matters  as may be
requested by the  Investors.  The Company  shall have obtained any and all other
consents,  permits and waivers and made all filings necessary or appropriate for
consummation of the transactions contemplated by this Agreement.

         2.3 Articles of  Incorporation;  Certificate of Amendment.  The Company
shall have duly filed with the  Secretary of State of Georgia a  Certificate  of
Amendment  in the form as set forth in Exhibit C attached  hereto  amending  the
Company's Articles of Incorporation, which amendment shall have become effective
for all  purposes on or before and shall  remain  effective  through the Closing
Date.

         2.4 Board of Directors.  Effective as of the Closing,  an individual to
be selected by the Investors  shall have been elected to the Company's  Board of
Directors as the representative of the Investors.

         2.5      Expenses.  The Company shall have paid the expenses set forth
in Section 18 hereof.
                  --------

         2.6 Secretary's Certificates;  Good Standing Certificates.  Each of the
Company and the  Subsidiaries  shall have  delivered to the  Investors  true and
correct  copies of its  Articles  of  Incorporation,  Bylaws  and other  charter
documents,  all as amended  through the Closing  Date and each  certified by its
respective corporate Secretary or Assistant Secretary.

         2.7 SBIC Matters.  The Company  shall have duly  completed and executed
for  the  Investors  that  are  small  business   investment   companies   (each
individually, an "SBIC HOLDER"), Small Business Administration Forms 480 and 652
together with a written statement from the Company regarding its intended use of
proceeds from the financing.

         2.8 Amendment to Registration Rights Agreement. The Registration Rights
Agreement  dated as of June 21, 1995 (as heretofore  amended) among the Company,
the Investors and the other parties  thereto shall have been amended as provided
in the Second  Amendment to Registration  Rights  Agreement in the form attached
hereto as Exhibit D (such Registration  Rights Agreement,  as heretofore amended
and as  amended by such  Second  Amendment  is  hereinafter  referred  to as the
"REGISTRATION RIGHTS AGREEMENT").

         2.9 All Proceedings  Satisfactory.  All corporate and other proceedings
taken  prior  to  or  at  the  Closing  in  connection  with  the   transactions
contemplated  by  this  Agreement,  and all  documents  and  evidences  incident
thereto,  shall  be  reasonably  satisfactory  in  form  and  substance  to  the
Investors,  and the  Investors  shall  receive  such  copies  thereof  and other
materials (certified, if requested) as they may reasonably request in connection
therewith.

         3.       CONDITIONS OF SALE.

         The Company's obligation to issue and sell the Purchased Shares and the
Warrants  hereunder  shall be  subject to  compliance  by the  Investors  in all
material  respects with their agreements herein contained and to the fulfillment
on or before and at the Closing of the following conditions:

         3.1.  Representations and Warranties.  If the Closing occurs other than
on the  date  hereof,  the  representations  and  warranties  of  the  Investors
contained  in  Section  6 of this  Agreement  shall be true and  correct  in all
material respects with the same force and effect as though such  representations
and  warranties  had been made on and as of the  Closing  Date,  and the Company
shall  receive  a  certificate  to such  effect  executed  by a duly  authorized
representative of each of the Investors.

         3.2.  Authorization;  Consents.  The Board of  Directors of the Company
(including the independent board committee) shall have duly adopted  resolutions
in form  satisfactory  to the  Investors  and shall have  received all necessary
approvals of shareholders  of the Company  authorizing the Company to consummate
the transactions  contemplated  hereby in accordance with the terms hereof,  and
the Investors  shall have received a duly executed  certificate of the Secretary
or an Assistant  Secretary of the Company dated the Closing Date setting forth a
copy of such  resolutions  and such  other  matters as may be  requested  by the
Investors.  The Company shall have obtained any and all other consents,  permits
and waivers and made all filings  necessary or appropriate  for  consummation of
the transactions contemplated by this Agreement.



<PAGE>


         4.       REPRESENTATIONS AND WARRANTIES.

         As a material  inducement to the Investors to enter into this Agreement
and to purchase the  Purchased  Shares and Warrants as  contemplated  hereby the
Company represents and warrants to the Investors as follows:

         4.1.  Organization,  Corporate  Power and  Authority,  etc. Each of the
Company and the  Subsidiaries  (as defined  below) is a  corporation  or limited
liability  company duly organized,  validly  existing and in good standing under
the  laws of its  state  of  incorporation  and has  full  corporate  power  and
authority  to own and  hold its  properties  and to  carry  on its  business  as
presently  conducted.  Each of the Company and the Subsidiaries is duly licensed
or qualified and in good standing as a foreign  corporation or limited liability
company authorized to do business in all jurisdictions in which the character of
property owned or leased, or the nature of the activities conducted by it, makes
such  licensing  or  qualification  necessary,  except  where the  failure to so
qualify  would not have a Material  Adverse  Effect.  The attached  Schedule 4.1
contains a list of all entities of which the Company owns or controls,  directly
or indirectly  through one or more other Persons, a majority of the voting stock
or limited  liability  company  interests (each a "SUBSIDIARY" and collectively,
"SUBSIDIARIES").  Except for such  Subsidiaries,  neither  the  Company  nor any
Subsidiary  owns of record  or  beneficially  any  shares  of  capital  stock or
securities  convertible into capital stock of, or any other proprietary interest
in, any Person.

         4.2  Validity  and  Enforceability.   The  Company  has  all  necessary
corporate  power and authority,  and has taken all corporate  action required to
execute,  deliver and perform  this  Agreement,  to issue,  sell and deliver the
Purchased  Shares and the Warrants and to issue the Common Stock  issuable  upon
exercise of the Warrants. This Agreement and all other documents and instruments
executed by the Company  pursuant hereto,  when delivered,  are and will be duly
authorized, valid and binding obligations of the Company enforceable against the
Company in accordance with their  respective  terms,  subject to laws of general
application  relating to  bankruptcy,  insolvency  and the relief of debtors and
equitable  principles limiting rights to specific  performance.  The sale of the
Preferred  Shares and the Warrants by the Company in accordance  herewith is not
subject to  preemptive  or other  preferential  rights or similar  statutory  or
contract  rights that have not heretofore  been waived and does not give rise to
any  "anti-dilution"  provisions  either  arising  pursuant to any  agreement or
instrument to which the Company is a party or which are otherwise binding on the
Company.  Without limitation of the foregoing, the Company and the Investors who
hold  Class A Warrants  (as such term is defined in Exhibit B) hereby  represent
and warrant that the "Exercise Price" for purposes of the Class A Warrants is as
of the date  hereof  $1.50 per share and shall not be  adjusted by reason of the
issuance of the Securities as contemplated  hereby. Upon the issuance,  sale and
delivery of the Securities in accordance  with the terms hereof,  the Securities
will be validly issued, fully paid and non-assessable and will be free and clear
of all liens, security interests, charges, restrictions, claims and Encumbrances
of any nature whatsoever (each a "LIEN"),  subject to applicable restrictions on
transfer  under Federal and state  securities  laws and any Liens created by the
Investors.

         4.3  Capitalization;  Status of Capital  Stock.  (a) The  Company has a
total  authorized  capitalization  consisting of 30,000,000  shares of Preferred
Stock (of which 13,500,000 shares are designated as Class A Redeemable Preferred
Stock and 5,500,000 shares are designated as Class B Senior Redeemable Preferred
Stock),  and  100,000,000  shares of Common  Stock.  All issued and  outstanding
shares  of  capital  stock of the  Company  and each  Subsidiary  have been duly
authorized  and  validly  issued,  are fully paid and  non-assessable,  and were
issued in compliance with all applicable state and Federal securities laws.

         (b) The  Preferred  Shares  and the  Warrants  which are  being  issued
hereunder have been duly and validly  authorized  and, when issued and delivered
in accordance with the terms hereof for the consideration  provided herein, will
be validly issued,  fully paid and  nonassessable and will not be subject to any
Lien. On or prior to Closing, the Company will have authorized and reserved, and
covenants to continue to reserve,  a sufficient number of shares of Common Stock
for issuance upon the exercise of the Warrants.  The shares of Common Stock that
will be issued upon exercise of the Warrants will be validly issued,  fully paid
and  nonassessable  and will not be subject to any Lien,  subject to  applicable
restrictions  on transfer under Federal and state  securities laws and any Liens
created  by  the  Investors.   No  further  approval  or  authorization  of  the
shareholders or the directors of the Company or any successor or other Person is
or will be required for the  issuance of the Common  Stock upon  exercise of the
Warrants.

         (c) Except as set forth on  Schedule  4.3:  (a) neither the Company nor
any Subsidiary has any subscription,  warrant,  option,  convertible security or
other options or rights  (contingent or otherwise) to purchase shares of capital
stock,  or  securities  convertible  into shares of capital  stock,  authorized,
issued or  outstanding,  nor is the Company or any  Subsidiary  obligated in any
manner to issue shares of its capital  stock or securities  convertible  into or
evidencing any right to acquire shares of its capital stock, or to distribute to
holders of any of its capital stock any evidence of indebtedness or assets;  (b)
no Person has any preemptive  right,  right of first refusal or similar right to
acquire  additional  shares of capital stock of the Company or any Subsidiary in
connection  with  the sale  and  purchase  of the  Securities  pursuant  to this
Agreement or  otherwise;  (c) there are no  restrictions  on the transfer of the
shares of capital stock of the Company, other than (i) those imposed by relevant
state and Federal  securities laws, (ii) as set forth in Section 6.5 hereto; and
(iii) certain  restrictions  on transfers of shares  issued in  connection  with
certain  acquisitions made by the Company,  (d) no Person has any right to cause
the Company to effect the registration under the Securities Act of any shares of
capital stock or any other securities (including debt securities) of the Company
other  than  as  set  forth  in  the  Registration   Rights  Agreement  and  the
registration  rights  agreements  executed by the Company in connection with the
acquisitions  of Big Apple Paging  Corp.  and Mercury  Paging &  Communications,
Inc.; (e) neither the Company nor any Subsidiary has any obligation  (contingent
or  otherwise)  to  purchase,  redeem or  otherwise  acquire  any of its  equity
securities  or any interests  therein,  or to pay any dividend or make any other
distribution  in  respect   thereto;   and  (f)  there  are  no  voting  trusts,
shareholders'  agreements,  or proxies relating to any securities of the Company
or any  Subsidiary.  A complete and correct  schedule of the number of shares of
issued and outstanding capital stock and of any subscription,  warrant,  option,
convertible  security or other  options or rights  (contingent  or otherwise) to
purchase  shares of capital  stock,  or  securities  convertible  into shares of
capital  stock of the  Company  and  each  Subsidiary  immediately  prior to the
Closing is set forth in Schedule 4.3.

         4.4 Governmental and Other Consents,  etc. No  authorization,  consent,
approval,  license,  exemption  of or filing or  registration  with any court or
governmental department,  commission,  board, bureau, agency or instrumentality,
domestic  or  foreign,  or any third  party,  the  absence of which would have a
Material  Adverse Effect is or will be necessary for, or in connection with, the
offer,  issuance,  sale,  execution  or  delivery  by the  Company,  or for  the
performance by it of its obligations,  under this Agreement except such, if any,
as may be required under any  applicable  state  securities  laws that have been
complied with on or prior to the Closing Date.

         4.5 Compliance with Securities Laws. (a) Subject to the accuracy of the
representations  of the Investors set forth in Section 6 below,  the Company has
complied and will comply with all  applicable  United  States  Federal and state
securities  laws  in  connection  with  the  offer,  issuance  and  sale  of the
Securities in  compliance  with Section 1.5 of this  Agreement.  The Company has
not,  either  directly  or through  any agent,  offered  any  securities  to, or
otherwise  approached,  negotiated or  communicated in respect of any securities
with,  any  Person  so as  thereby  to  require  that  the  offer or sale of the
Securities  be  registered  pursuant  to  the  provisions  of  Section  5 of the
Securities Act. Subject to the accuracy of the  representations of the Investors
set forth in Section 6 below,  the offer,  sale and  issuance  of the  Purchased
Shares and the Warrants  (and of the Common Stock  issuable upon the exercise of
the Warrants) in conformity with the terms of this Agreement are exempt from the
registration  requirements of Section 5 of the Securities Act and all applicable
state securities laws.

         (b) The Company's Annual Reports on Form 10-K for the fiscal year ended
December  31,  1996,  and all  other  reports,  registration  statements,  proxy
statements or  information  statements  filed or to be filed by it or any of its
Subsidiaries  subsequent  to March  1,  1996  under  the  Securities  Act or the
Exchange  Act,  in the  form  filed  with  the  Commission  (collectively,  "SEC
DOCUMENTS"),  as of the date filed,  (1) complied as to form with the applicable
requirements  under the  Securities Act or the Exchange Act, as the case may be,
and (2) did not contain any untrue statement of a material fact or omit to state
a  material  fact  required  to be  stated  therein  or  necessary  to make  the
statements  therein,  in the light of the  circumstances  under  which they were
made,  not  misleading;   and  each  of  the  balance  sheets  contained  in  or
incorporated by reference into any of the Company's SEC Documents (including the
related notes and schedules  thereto) fairly presents the financial  position of
the Company and its  Subsidiaries  as of its date, and each of the statements of
income  and  changes  in  shareholders'  equity  and cash  flows  or  equivalent
statements  in the  Company's  SEC  Documents  (including  any related notes and
schedules  thereto)  fairly  presents  the  results  of  operations,  changes in
shareholders'  equity  and  changes  in cash  flows,  as the case may be, of the
Company and its Subsidiaries for the periods to which they relate, in each case,
in compliance with  applicable  accounting  requirements  and with the published
rules of the SEC with respect thereto and in accordance with generally  accepted
accounting principles consistently applied during the periods involved,  except,
in each  case,  as may be  noted  therein,  subject  to  normal  year-end  audit
adjustments  (which are not  expected to be  material)  in the case of unaudited
statements.

         (c) Since December 31, 1997, the Company and its Subsidiaries  have not
incurred any material  liability  other than in the ordinary  course of business
consistent with past practice.

         (d) Since December 31, 1997, (1) the Company and its Subsidiaries  have
conducted  their  respective   businesses  in  the  ordinary  and  usual  course
consistent with past practice  (excluding the incurrence of expenses  related to
this Agreement and the  transactions  contemplated  hereby) and (2) no event has
occurred or fact or  circumstance  arisen that,  individually  or taken together
with all other facts,  circumstances  and events has had or is reasonably likely
to have a Material Adverse Effect.

         4.6 Financial Statements. The Company's audited financial statements as
of  December  31,  1996  (the  "AUDITED  FINANCIAL  STATEMENTS")  and  unaudited
financial  statements  as  of  September  30,  1997  (such  unaudited  financial
statements,  together with the Audited  Financial  Statements  being referred to
collectively as the "FINANCIAL STATEMENTS") have been previously provided to the
Investors. The Financial Statements present fairly the financial position of the
Company as at the dates  thereof  and for the periods  covered  thereby and have
been  prepared in  accordance  with  generally  accepted  accounting  principles
consistently  applied (except in the case of unaudited financial  statements for
footnotes  otherwise  required by generally accepted  accounting  principles and
normal year  adjustments  that are not material in amount).  Neither the Company
nor any Subsidiary has any liability,  contingent or otherwise, not disclosed in
the Financial  Statements or in the notes thereto,  that could together with all
such other liabilities, have a Material Adverse Effect. Since December 31, 1996,
(i)  there  has been no  material  adverse  change  in the  business,  assets or
condition,  financial  or  otherwise,  or  operations  of  the  Company  or  any
Subsidiary;  (ii) neither the business,  condition,  financial or otherwise,  or
operations of the Company or any  Subsidiary nor any of its properties or assets
has been materially  adversely  affected by any event or occurrence of any type,
whether or not insured against; (iii) except as set forth on Schedule 4.6 hereto
or in the  Company's  filings under the Exchange Act, and except as entered into
in the ordinary  course of business,  neither the Company nor any Subsidiary has
incurred any  liabilities or obligations in excess of $50,000;  and (iv) neither
the Company nor any Subsidiary has entered into any transaction  that would have
a Material Adverse Effect.

         4.7.  Taxes.  Each of the Company and the  Subsidiaries  has accurately
prepared  and timely  filed all  Federal,  state and other tax returns  that are
required to be filed by it and has paid or made provision for the payment of all
taxes  that have  become  due  pursuant  to such  returns  and all other  taxes,
assessments  and  governmental   charges  that  have  become  due  and  payable,
including,  without limitation,  all taxes that the Company or any Subsidiary is
obligated  to withhold  from amounts  owing to  employees,  creditors  and third
parties.  There are no tax Liens upon any asset of the Company or any Subsidiary
except statutory liens arising by operation of law for taxes not yet due. Except
as set forth on Schedule  4.7,  neither the Company nor any of its  shareholders
has ever filed (a) an election  pursuant to Section 1362 of the Internal Revenue
Code of  1986,  as  amended  (the  "CODE"),  that the  Company  be taxed as an S
corporation or (b) a consent pursuant to Section 341(f) of the Code, relating to
collapsible corporations.

         4.8.  Litigation.  Except as set  forth on  Schedule  4.8,  there is no
action,  suit,   proceeding  or  investigation  pending  or,  to  the  Company's
knowledge,  threatened  against or affecting the Company or any Subsidiary  that
might result,  either in any case or in the aggregate,  in any material  adverse
change  in the  business,  assets  or  condition,  financial  or  otherwise,  or
operations  of the Company or any  Subsidiary,  or that might call into question
the validity of, or hinder the  enforceability or performance of, this Agreement
or the  Securities,  or any  action  taken or to be  taken  pursuant  hereto  or
thereto; nor, to the Company's knowledge,  has there occurred any event nor does
there exist any condition  making likely the institution of any such litigation,
proceeding  or  investigation.  Neither  the Company  nor any  Subsidiary  is in
default with respect to any order, writ, injunction,  decree, ruling or decision
of any court, commission,  board or other government agency by which the Company
or any  Subsidiary  is bound  that  might  result,  either in any case or in the
aggregate,  in any material adverse change in the Company's business,  assets or
condition, financial or otherwise, or operations.

         4.9.  ERISA.  Except as described on Schedule 4.9,  neither the Company
nor any  Subsidiary  maintains or operates any Employee  Benefit Plan or has any
such Employee  Benefit Plan been  maintained  or operated  during the past three
years.  Neither the Company nor any  Subsidiary  maintains or contributes to any
Guaranteed  Pension Plan or  Multiemployer  Plan.  With respect to each Employee
Benefit Plan listed on Schedule 4.9, to the extent applicable,  the following is
true:

         (a) Each such Employee Benefit Plan has been maintained and operated in
all  material  respects  in  compliance  with its terms and with all  applicable
provisions of ERISA, the Code and all applicable regulations,  rulings and other
authority issued thereunder;

         (b) All contributions required by law to have been made under each such
Employee  Benefit Plan (without  regard to any waivers granted under Section 412
of the  Code) to any  fund or  trust  established  thereunder  or in  connection
therewith have been made by the due date thereof;

         (c) Each such  Employee  Benefit Plan intended to qualify under Section
401(a) of the Code is the subject of a favorable unrevoked  determination letter
issued by the  Internal  Revenue  Service as to its  qualified  status under the
Code,  which  determination  letter  may  still  be  relied  upon as to such tax
qualified status, and no circumstances have occurred that would adversely affect
qualified status of any such Employee Benefit Plan;

         (d)      No Employee Benefit Plan is subject to Title IV of ERISA;

         (e) None of such  Employee  Benefit  Plans that are  "employee  welfare
benefit  plans" as defined  in Section  3(1) of ERISA  provides  for  continuing
benefits or coverage for any  participant or beneficiary of a participant  after
such participant's  termination of employment,  except as required by applicable
law, including section 4980B of the Code or Section 601 of ERISA; and

         (f)  Neither  the  Company  nor any trade or  business  (whether or not
incorporated)  under  common  control  with the  Company  within the  meaning of
Section 4001 of ERISA has, or at any time has had, any  obligation to contribute
to any "multiemployer plan" as defined in Section 3(37) of ERISA.

         4.10. No  Violations.  The execution,  delivery and  performance by the
Company of this Agreement and any documents or instruments  delivered,  executed
and performed in connection  therewith,  the  consummation  of the  transactions
contemplated hereby (including the issuance,  sale and delivery of the Purchased
Shares and the  Warrants  and upon  exercise of the  Warrants,  the issuance and
delivery of the Common Stock issuable in connection  therewith),  and compliance
with the provisions hereof,  will not violate any provision of law, the Articles
of Incorporation or Bylaws,  as amended,  of the Company or violate any order of
any  court or other  agency  of  government  or  indenture,  agreement  or other
instrument to which the Company or any  Subsidiary is bound,  or conflict  with,
result in the breach of or constitute (with due notice or lapse of time or both)
a default under, any such indenture, agreement or other instrument, or result in
the creation or imposition  of any Lien upon any of the  properties or assets of
the Company or any Subsidiary.

         4.11.  Other  Agreements.  Neither the Company nor any  Subsidiary is a
party to or bound by any  agreement,  contract or  commitment  or subject to any
charter,  bylaw or other corporate restriction that materially adversely affects
its  business,  assets or  condition,  financial or  otherwise,  or  operations.
Neither the Company nor any  Subsidiary is in default under any provision of its
Articles of Incorporation,  Bylaws or other charter  documents,  each as amended
and in effect on the date hereof.

         4.12. Other Agreements of Officers,  etc. No officer or Key Employee of
the Company is a party to or bound by any agreement,  contract or commitment, or
subject to any restriction that materially and adversely affects, or that in the
future has a reasonable  possibility of materially and adversely affecting,  the
business,  assets or  condition,  financial or  otherwise,  or operations of the
Company or the right of any such  Person to  participate  in the  affairs of the
Company. To the Company's  knowledge,  no Key Employee has any present intention
of terminating  his employment  with the Company,  and the Company does not have
any present  intention of  terminating  any such  employment.  This Section 4.12
shall not be deemed to constitute an employment  contract nor to grant any right
in favor of any Person other than the Investors.

         4.13.  Transactions  with  Affiliates.  Except as set forth on Schedule
4.13 or in the Company's  Annual Report on Form 10-K for the year ended December
31, 1996, there are no loans, advances,  leases or other continuing transactions
between the Company and any shareholder owning more than 1% of the capital stock
of the Company or any director or officer of the Company or any  Subsidiary,  or
any member of such officer's,  director's or shareholder's  immediate family, or
any Person controlled by any such officer,  director or shareholder or member of
such officer's, director's or shareholder's immediate family.

         4.14. Compliance with Law. Except with regard to environmental matters,
securities matters, and FCC matters covered in other Sections of this Agreement,
each of the Company and the  Subsidiaries  is  currently  in  compliance  in all
respects  with all  Federal  and  state  laws,  rules,  regulations  and  orders
applicable  to  its  business,  operations,  properties,  assets,  products  and
services,  and has obtained and possesses all  necessary  certificates  of need,
permits,  licenses and other authorizations  required to conduct its business as
presently  conducted  except  where a failure  so to comply to or to obtain  and
possess the same would not have a Material  Adverse Effect.  There is no Federal
or state governmental inquiry, investigation,  lawsuit or proceeding pending or,
to the Company's  knowledge,  threatened against or affecting the Company or any
Key  Employee,  the effect of which may lead to or result in the  suspension  or
revocation of any governmental license or approval held by the Company,  and, to
the Company's knowledge, there is no basis for any of the foregoing.

         4.15.  Material  Contracts.  Except as set forth on Schedule  4.15, the
Company, each Subsidiary and, to the Company's and each Subsidiary's  knowledge,
each other  party  thereto,  have in all  material  respects  performed  all the
obligations  required to be  performed  by them to date,  have not  received any
notice of  default,  and are not in  default,  under  any  lease,  agreement  or
contract now in effect to which the Company or any  Subsidiary  is a party or by
which the Company,  any  Subsidiary or their  respective  property may be bound,
which  defaults  would have  singularly or in the  aggregate a Material  Adverse
Effect.  Neither the Company nor any Subsidiary  has any present  expectation or
intention of not fully performing all of its obligations  under each such lease,
contract or other agreement to which it is a party or by which it is bound,  and
neither  any  Company  nor any  Subsidiary  has any  knowledge  of any breach or
anticipated breach by the other party to any contract or commitment to which the
Company or any Subsidiary is a party.

         4.16. Title to Assets. (a) Each of the Company and the Subsidiaries has
good and  marketable  title to, and is the owner of, or holds a valid  leasehold
interest in or license rights to, all properties and assets necessary to conduct
its  business  as  presently  conducted.  There  are no Liens on or  outstanding
against any of the Company's or any Subsidiary's properties and assets except as
set forth on Schedule 4.16, and except for statutory Liens,  such as mechanic's,
materialman's,  warehouseman's,  carrier's or other like Liens, incurred in good
faith  in  the  ordinary  course  of  business,  provided  that  the  underlying
obligations  relating to such Liens are paid in the ordinary course of business,
or are being contested  diligently and in good faith by appropriate  proceedings
and as to which the Company has set aside  adequate  reserves on its books.  All
material leases pursuant to which the Company or any Subsidiary  leases personal
property are in good  standing and are valid and  effective in  accordance  with
their  respective  terms and there  exists no  default  or other  occurrence  or
condition  that could  result in a default or  termination  thereof,  except for
default or other occurrence that would not have a Material Adverse Effect.

         (b) The  properties  and assets  owned,  leased by or  licensed  to the
Company and each  Subsidiary,  if  applicable,  and  reflected in the  Financial
Statements  constitute  all of the real and  personal  properties,  tangible and
intangible, that are necessary, used or useful in the conduct of its business in
the manner and to the extent presently conducted or as presently contemplated to
be conducted. No other material real or personal properties are required for the
conduct of the business of the Company or any Subsidiary as presently conducted.
All such  tangible  properties  and assets are in good working order and repair,
ordinary wear and tear excepted.

         4.17.  Real Property.  Neither the Company nor any Subsidiary  owns any
real property.  The Company and each Subsidiary has the right to quiet enjoyment
of all real  property in which it holds a leasehold  interest  for the full term
thereof, including all renewal terms, of the lease or similar agreement relating
thereto.

         4.18. Environmental  Compliance; No Liability. (a) The Company and each
Subsidiary  has operated its business and each parcel of real property  owned or
leased by it (the "REAL  PROPERTY") in compliance in all material  respects with
all applicable Environmental Laws. No notice of any violation, citation, summons
or order has been  received,  no complaint  has been filed,  no penalty has been
assessed  and,  to  the  knowledge  of  the  Company  and  each  Subsidiary,  no
investigation  or review is pending or has been  threatened by any  governmental
entity or other  person  that could  require the  Company or any  Subsidiary  to
expend money, or abide by conditions  contained in consent  decrees,  settlement
agreements  or orders,  in each case with regard to (i) any violation or alleged
violation of any  Environmental  Law, or (ii) any failure or alleged  failure to
comply with any Environmental Permit, or (iii) any use, possession,  generation,
treatment,  storage,  recycling,  transportation,   disposal  or  release  of  a
Regulated Material.

         (b)  Compliance  with  Permits.  There  are no  environmental  permits,
certificates,  licenses, approvals,  registrations,  and authorizations required
for the  operation  of its business and the Real  Property  (the  "ENVIRONMENTAL
PERMITS").

         (c)  Treatment;  CERCLIS.  Neither the Company nor any  Subsidiary  has
treated,  stored,  recycled or disposed  of any  Regulated  Material on any real
property, and, to the Company's knowledge, no other Person has treated,  stored,
recycled or disposed of any Regulated  Material on any part of the Real Property
except in material compliance with applicable Environmental Laws. There has been
no unremedied release of, and there is not present any Regulated Material at, on
or under any Real Property  except such Regulated  Material as is used or stored
at, on, or under any Real  Property in material  compliance  with  Environmental
Laws.  None of the Real  Property is listed or, to the knowledge of the Company,
proposed  for listing on the National  Priorities  List  pursuant to  Superfund,
CERCLIS or any state or local list of sites requiring investigation or cleanup.

         (d) Notices;  Existing Claims;  Certain  Regulated  Materials;  Storage
Tanks.  Neither the  Company nor any  Subsidiary  has  received  any request for
information,  notice of claim, demand or other notification that it is or may be
potentially responsible with respect to any investigation,  abatement or cleanup
of any  threatened  or actual  release of any  Regulated  Material.  Neither the
Company  nor any  Subsidiary  is  required  to place any  notice or  restriction
relating to the presence of any  Regulated  Material at any Real  Property or in
any deed to any Real  Property.  There has been no past, and there is no pending
or contemplated,  claim by the Company or any Subsidiary under any Environmental
Law based on actions of others that may have impacted on the Real Property,  and
the Company has not entered into any  agreement  with any Person  regarding  any
claim pursuant to any Environmental  Law. All underground  storage tanks located
on the Real  Property  are  disclosed on Schedule  4.18,  and all such tanks and
associated  piping  are in  sound  condition  and are not  leaking  and have not
leaked.  All  underground  storage  tanks are in  material  compliance  with all
Environmental Laws and if no longer in use or being operated have been closed or
removed materially in accordance with all Environmental Laws.

         (e)  PCBs;  Asbestos,   etc.  To  the  knowledge  of  the  Company,  no
polychlorinated  biphenyls  ("PCBs"),  asbestos  containing  material ("ACM's"),
radon, or urea  formaldehyde  are present at any property now owned or leased by
the Company or any Subsidiary.

         (f) Environmental Liens. There are no environmental Liens on any of the
assets of the  Company or any  Subsidiary  or Real  Property  and no action by a
governmental  entity has been taken or is in the process, or to the knowledge of
the Company, pending or threatened that could subject any of such assets or Real
Property to any such Liens.

         4.19.  Foreign  Investment in Real Property Tax Act. The Company is not
now and has never been a "United States real property  holding  corporation" for
purposes  of  Section  897(c)(2)  of  the  Code  and  the  Treasury  Regulations
thereunder.

         4.20.  FCC  Matters.  (a) The FCC has  issued to the  Company,  and the
Company holds all material  licenses (the "FCC  LICENSES")  necessary to conduct
its  business  as such  business  is  currently  conducted  and  proposed  to be
conducted, and such FCC Licenses are valid and in full force and effect. For the
two-year period prior to the date hereof,  the Company has filed all statements,
reports and  information  required by the FCC and duly performed in all respects
all of its obligations under such FCC Licenses and the Communications Act.

         (b) The Company is in  compliance  in all  material  respects  with the
Communications  Act governing the ownership and operation of the paging  systems
owned,  permitted,  licensed,  being constructed and/or operated pursuant to the
FCC Licenses.  There is not now pending or, to the Company's or any Subsidiary's
knowledge, threatened any litigation, proceeding or investigation before the FCC
that might result in a termination  of any of the FCC Licenses.  The Company has
constructed  all of its  material  facilities  operating  under the FCC Licenses
within the construction period provided under the Communications Act.

         (c) No event has occurred (including any notice issued by the FCC), and
no agreement has been entered into by the Company  (including  this  Agreement),
that now or after notice or lapse of time or both,  might reasonably be expected
to permit cancellation,  revocation or termination of the FCC Licenses, or would
result in any FCC action  that could  reasonably  be expected to have a Material
Adverse  Effect,  and  there is not,  to the  Company's  knowledge,  pending  or
threatened  any action or matter that would  suggest that the FCC Licenses  will
not be renewed in the ordinary course.

         (d) There is not pending any application,  petition, objection or other
pleading  filed with the FCC or any federal entity with  jurisdiction  to review
administrative orders of the FCC, that questions the validity of or contests any
of the FCC Licenses.

         (e) No consents, approvals or actions by the FCC are required to permit
the consummation of the transactions  contemplated hereby, and such consummation
will not result in a violation of the  Communications Act and will not cause any
forfeiture or impairment of the FCC Licenses.

         4.21.  Disclosure.  Neither this Agreement nor any  certificate,  list,
exhibit,  letter or other  written  statement  furnished  by the  Company to the
Investors or their special counsel in connection  herewith  (including,  without
limitation,  in response to any request for information  made by any Investor or
its agent to the Company)  contains any untrue  statement of a material  fact or
omits to state  any  material  fact  necessary  in order to make the  statements
contained herein or therein not misleading in light of the  circumstances  under
which  they  are or  were  made.  There  exists  no fact  or  circumstance  that
materially and adversely affects the business, assets or condition, financial or
otherwise,  or operations  of the Company,  that has not been  specifically  set
forth  in  financial  statements  of the  Company  heretofore  delivered  to the
Investors or set forth in this Agreement or the Exhibits and Schedules hereto or
a certificate furnished to the Investors by the Company at the Closing.

         4.22. Margin Stock.  Neither the Company nor any Subsidiary owns or has
any present  intention of  acquiring  any "margin  stock"  within the meaning of
Regulation U (12 CFR Part 221), of the Board of Governors of the Federal Reserve
System.

         4.23 Investment Company. The Company is not an "investment company", or
a company "controlled" by an "investment  company", as such terms are defined in
the Investment Company Act of 1940, as amended.

         4.24 Boycott.  Neither the Company nor any  Subsidiary  has at any time
has  participated  in, and is not  currently  participating  in, an  anti-Israel
boycott  within the scope of Chapter 7 of Part 2 of Division 4 of Title 2 of the
California Government Code.

         4.25 Registration  Rights.  (a) Except for (i) the Registration  Rights
Agreement, (ii) the Registration Rights Agreement dated as of September 13, 1996
between the Company and Big Apple Paging Corporation (the "BIG APPLE AGREEMENT")
and (iii) the  Registration  Rights Agreement dated as of January 31, 1997 among
the Company and  stockholders  of Mercury Paging and  Communications,  Inc. (the
"MERCURY  AGREEMENT"),  the Company is not party to any  agreement  or otherwise
obligated to register under the  Securities  Act or include in any  underwritten
offering  of its  securities  any  shares  of its  capital  stock,  whether  now
outstanding  or subject to issuance  upon the  exercise of any warrant or option
for shares of the Company's capital stock.

         (b) The initial public offering of the Company's  Common Stock on March
1, 1996  constituted  a  "Qualified  Public  Offering"  for all  purposes of the
Registration  Rights Agreement and the  Stockholders  Agreement dated as of June
21,  1995 among the Company and  certain of its  shareholders  at such time,  as
heretofore amended (the "STOCKHOLDERS AGREEMENT").

         (c)  The  rights  of  the  "Secondary   Holders"  (as  defined  in  the
Registration  Rights  Agreement)  to "Demand  Registrations"  (as defined in the
Registration  Rights  Agreement) have terminated in accordance with Section 1(g)
of the Registration  Rights Agreement (as amended by the Amendment thereto dated
as of June 3, 1997);  provided,  however,  that the following  Secondary Holders
continue  to  have  as  of  the  date  hereof   rights  to   "Secondary   Demand
Registrations"  (as defined in the Registration  Rights Agreement) in accordance
with  the  terms  of the  Registration  Rights  Agreement:  Advanced  Technology
Development Fund II, Mark H. Dunaway, Marcia M. Dunaway, Michael J. Saner, Saner
Communications, Inc. and Eugene H. Kreeft.

         (d)  The  Company  covenants  not to  effect  any  registration  of its
securities  requested  under  either  the Big  Apple  Agreement  or the  Mercury
Agreement if, in the opinion of the Company's counsel,  such registration is not
required  for  the  immediate  transfer  of all of the  shares  subject  to such
agreements,  as the  case  may be,  pursuant  to  Rule  144 or  other  available
exemption from registration under the Securities Act.

         4.26 Investments in United States Real Property Interest. The Company's
capital stock does not constitute a United States real property interest as that
term is defined in Section  897(c)(1)(A)(ii)  of the  Internal  Revenue  Code of
1986,  as amended  (the  "CODE").  The  preceding  representation  is based on a
determination  by the Company  that the Company is not and has not been a United
States real  property  holding  corporation  (as that term is defined in Section
897(c)(2)  of the Code)  during the five (5) year period  preceding  the date of
this  Agreement.  The Company  shall use its best efforts to ensure that it does
not at any time in the  future  become a United  States  real  property  holding
corporation  ("USRPHC") and from time to time, upon request of any Investor that
is  acquiring  more  than  $100,000  of  Securities  hereunder,   shall  make  a
determination  as to its  status as a USRPHC.  If at any time in the  future the
Company  should become a United States real property  holding  corporation,  the
Company shall,  as promptly as possible,  notify each Investor of such change in
status.

         5.       COVENANTS OF THE COMPANY.

         Until the such time as no Purchased Shares are outstanding, the Company
will comply with the following covenants:

         5.1 Board of  Directors  Meetings.  (a) The Company  shall use its best
efforts to fix the number of  directors of the Company at not more than nine (9)
and  to  cause  one  (1)  nominee  of the  Investors  to be  recommended  to the
shareholders  for  election as a director at all  meetings of  shareholders,  or
consents in lieu  thereof,  for such  purpose.  The Company will  reimburse  all
direct  out-of-pocket  expenses  reasonably  incurred  by such  director  of the
Company  in  attending  meetings  of  the  Board  of  Directors  and  all  other
out-of-pocket  expenses  reasonably incurred by such director in connection with
such director's serving on the Board of Directors and fulfilling such director's
responsibilities  as a director of the  Company.  The Company  shall ensure that
meetings of its full Board of  Directors  are held at least four times each year
and at intervals  of not more than four (4) months.  The  Company's  Articles of
Incorporation  and Bylaws shall provide for  indemnification  and exculpation of
directors  from  personal  liability,  to the  fullest  extent  permitted  under
applicable state law. The Company shall at all times maintain,  at the Company's
expense,  directors  and officers  liability  insurance  for its  directors  and
officers.

         (b) Board  Visitation and Materials.  The Company shall deliver to each
Investor  investing  at least  $1,500,000  pursuant  to this  Agreement  (each a
"PRINCIPAL  HOLDER")  a copy of all  materials  distributed  at or  prior to all
meetings  of the Board of  Directors  of the Company or any  committee  thereof,
(which shall include the minutes of the previous  meeting) and shall  thereafter
promptly  deliver to each Principal Holder any revised minutes as are adopted at
such or any subsequent meeting. The Company shall (a) permit a representative of
each  Principal  Holder  to  attend  all  meetings  of the  Company's  Board  of
Directors, and of the Company's shareholders,  (b) provide to such designees not
less than 5 calendar  days' prior actual  notice of all meetings (or as required
by the  bylaws,  if the  meeting is an  emergency  meeting and the matters to be
discussed or voted on would not in any way adversely  affect the Investor or its
interest or rights) of the  Company's  Board of Directors  and of the  Company's
shareholders and an agenda for the meetings and other materials related thereto,
(c) permit each such designee to attend such meetings as a non-voting  observer,
(d) provide to each such  designee a copy of all materials  distributed  at such
meetings and (e) reimburse all direct out-of-pocket expenses reasonably incurred
by such designee in attending such meetings.

         5.2  Consultations  and Advice.  The Company  shall allow each Investor
purchasing more than $100,000 of Securities hereunder to consult with and advise
management of the Company on significant business issues, including management's
proposed annual operating plans, and cause its management to meet with each such
Investor  regularly  during each year at the  Company's  facilities  at mutually
agreeable  times for such  consultation  and  advice and to review  progress  in
achieving said plans.

         5.3. Right of First Offer on Company Sales.  Each Investor shall have a
right of first offer with respect to future sales in a private  placement by the
Company of its capital stock or securities  convertible  into or  exercisable or
exchangeable for shares of such capital stock. Each time the Company proposes to
offer any such securities in a private  offering,  the Company shall first offer
such securities to the Investors and the holders of Class A Redeemable Preferred
Stock,  who  shall  each be  entitled  to  purchase  its pro  rata  share  (on a
fully-diluted basis as measured by their respective holdings of Common Stock and
Common  Stock  issuable  upon the  exercise of Warrants and Class A Warrants) of
such securities, before it offers to sell such securities to other Persons. This
Section 5.3 shall not apply to stock issued in connection with acquisitions.

         5.4.  Maintenance of Existence;  Compliance with Law. The Company shall
and shall cause each  Subsidiary  to keep in full force and effect its corporate
existence,  except  where the failure to do so will not have a Material  Adverse
Effect,  and will comply in all material  respects with all applicable  laws and
regulations in the conduct of its business  except those being contested in good
faith by  appropriate  procedures  and will file with the Commission in a timely
manner  all  reports  and other  documents  required  of the  Company  under the
Securities Act and the Exchange Act.

         5.5  Rule  144   Requirements.   The  Company  shall  comply  with  the
requirements  of Rule 144(c)  under the  Securities  Act with respect to current
public  information  about  the  Company  and  will  furnish  to any  holder  of
Securities upon request such reports and documents of the Company as such holder
may reasonable  request to avail itself of any similar rule or regulation of the
Commission allowing it to sell any such securities without registration.

         5.6 Insurance. The Company shall keep the insurable properties owned by
it and by the Subsidiaries  insured by financially sound and reputable  insurers
against the perils of liability, casualty, fire and extended coverage in amounts
of coverage at least equal to those  customarily  maintained by companies in the
same or a similar business of similar size. The Company shall also maintain with
such insurers workers' compensation  insurance and insurance against hazards and
risks and  liability  to persons  and  property  to the extent and in the manner
customary for corporations  engaged in the same or a similar business of similar
size.

         5.7 Key Man  Insurance.  The Company shall maintain and continue to pay
the premiums on a key-man term life insurance  policy on the life of (i) Mark H.
Dunaway in the amount of not less than $9,500,000,  (ii) Michael J. Saner in the
amount of not less than  $4,500,000  and (iii) Eugene H. Kreeft in the amount of
not less than  $2,000,000,  in each case naming the Company as the  beneficiary.
The life  insurance  proceeds  received by the  Company  shall be used for valid
business  purposes of the Company as approved by the Board of  Directors  of the
Company.

         5.8. Maintenance of Properties.  The Company shall and shall cause each
Subsidiary  to maintain  all  properties  used in the conduct of its business in
good repair, working order and condition as necessary to permit such business to
be properly and advantageously conducted.

         5.9.  Affiliated  Transactions.  All  transactions  by and  between the
Company or any Subsidiary and any officer, Key Employee, director or shareholder
of the Company or any  Subsidiary or Persons  controlled  by or affiliated  with
such officer,  Key Employee,  director or shareholder,  shall be conducted on an
arms-length  basis,  shall be on terms and  conditions no less  favorable to the
Company or Subsidiary than could be obtained from non-related  Persons and shall
be  approved  in advance by a majority  of  disinterested  Directors  after full
disclosure of the terms thereof.

         5.10. Management Compensation.  Compensation paid by the Company or any
Subsidiary to its management shall be reasonably comparable to compensation paid
to  management in companies of similar  size,  of similar  maturity,  of similar
profitability and in similar industries.

         5.11  Inspection.  The  Company  shall  permit  and  shall  cause  each
Subsidiary to permit  authorized  representatives  of the  Principal  Holders to
visit and inspect  any of the  properties  of the Company and its  Subsidiaries,
including its books of account, and to make copies thereof at the expense of the
Principal  Holders and to discuss its affairs,  finances  and accounts  with its
officers,  administrative  employees and  independent  accountants,  all at such
reasonable times with reasonable notice as may be reasonably requested but in no
event more than one time in any calendar month and all in a manner that does not
interfere  with the  business  operations  of the Company and its  Subsidiaries;
provided that all such information provided to the Investors by the Company will
be  maintained  as  confidential  by the Investors and not be disclosed to third
parties and provided,  further that, subject to the foregoing, each Investor may
provide  summaries  of  such  information  to  affiliates  of such  Investor  in
connection  with  reports  provided  by the  Investor to its  affiliates  in its
fiduciary capacity.  The Company shall permit and shall cause each Subsidiary to
permit examiners of the Small Business  Administration  to visit and inspect the
books and  records  of the  Company  and its  Subsidiaries  for the  purpose  of
verifying  the  certifications  made  by  the  Company  to  the  Small  Business
Administration.

         5.12 Restrictive Provisions. Until such time as no Purchased Shares are
outstanding,  without the written consent of holders of not less than two-thirds
(66.67%) of the then outstanding Purchased Shares, the Company shall not:

         (a) take any action that  amends,  alters or repeals  the  preferences,
special rights or other powers of the Class B Preferred  Stock,  so as to affect
adversely  the  Class  B  Preferred  Stock  (including,   without  limiting  the
generality  of the  foregoing,  the  authorization,  creation or issuance of any
shares of capital stock or other securities with preference or priority equal or
superior  to the  Class B  Preferred  Stock  or on a  parity  with  the  Class B
Preferred Stock in any regard, including, without limitation,  redemption rights
and the  right  to  receive  either  dividends  or  amounts  distributable  upon
liquidation,  dissolution  or winding up of the company) or that  increases  the
authorized number of shares of Class B Preferred Stock;

         (b) cause the issuance of any authorized but unissued shares of Class B
Preferred Stock;

         (c) redeem,  purchase or otherwise acquire for consideration any shares
of its capital  stock (or rights,  options or warrants to purchase such shares),
other than the Securities in accordance with their terms;

         (d)      approve any material change in the line of business of the  
Company or any Subsidiary;

         (e)  enter  into any  merger,  consolidation  or  amalgamation,  or any
recapitalization,  or  liquidate,  wind up or  dissolve  itself  (or  suffer any
liquidation  or  dissolution)  or  convey,  sell,  lease,  assign,  transfer  or
otherwise  dispose  of all or  substantially  all of  its  business,  assets  or
property;

         (f) amend its Articles of  Incorporation  or Bylaws,  if such amendment
would (i) change any material  rights,  preferences,  privileges or  limitations
provided to the holders of Class B Preferred Stock therein, (ii) change the size
of the  Board of  Directors  or the  procedures  for  meetings  of the  Board of
Directors and  shareholders,  including  without  limitation,  notice and quorum
requirements;  or (iii)  increase the dividend rate  applicable to the Company's
Class A Redeemable Preferred Stock, permit Class A Redeemable Preferred Stock to
be  converted  into  Common  Stock  or any  other  equity  or debt  security  or
instrument of the Company or otherwise change the rights,  powers or preferences
of the Class A Redeemable Preferred Stock in a manner that adversely affects the
holders of Class B Preferred Stock;

         (g)  enter  into any  acquisition  or series  of  related  acquisitions
involving an aggregate transaction value equal to or greater than $5,000,000; or

         (h)  increase  its  indebtedness  for  borrowed  money  in one or  more
transactions,  whether or not related,  in an aggregate  amount of $5,000,000 in
excess of the amount of the Company's  existing  indebtedness  and  availability
under existing credit facilities immediately preceding the Closing.

         6.       REPRESENTATIONS WARRANTIES AND
                  COVENANT OF THE INVESTORS.

         In order to induce  the  Company  to enter  into this  Agreement,  each
Investor, severally and not jointly, represents and warrants as follows:

         6.1 Accredited  Investor.  The Investor is an "accredited  investor" as
that term is defined in Regulation D under the Securities Act.

         6.2      Address, Etc.  The address, state of organization and state of
 headquarters of the Investor are as set forth on Schedule A attached hereto.

         6.3      Understanding of Nature of Securities.  The Investor 
understands that:

                  (i) The  Securities  and the  Common  Stock  issued  upon  the
exercise  of the  Warrants  (the  "Shares")have  not been  registered  under the
Securities  Act or any state  securities  laws (the "STATE  ACTS") and are being
issued and sold in reliance upon certain of the exemptions  contained in the Act
and the State Acts,  and the  representations  and  warranties  of the Investors
contained  herein are  essential to the claim of exemption by the Company  under
the Act and the State Acts;

                  (ii) The Securities and the Shares are "restricted securities"
as that term is defined in Rule 144 promulgated under the Securities Act;

                  (iii)  The  Securities  and  the  Shares  cannot  be  sold  or
transferred without  registration under the Act and any applicable State Acts or
exemption therefrom;

                  (iv) The Securities and the Shares and any certificates issued
in  replacement  therefor  shall bear the following  legend,  in addition to any
other legend required by law or otherwise;

                  "The securities  represented by this certificate have not been
registered  under the Securities Act of 1933 (the "Act") or any state securities
acts  and may not be  sold,  transferred  or  otherwise  disposed  of  unless  a
registration  statement under the Act and any applicable  state  securities acts
with respect to such securities is effective or unless the Company is in receipt
of an opinion of counsel  satisfactory  to it to the effect that such securities
may be sold without registration under the Act and such acts."

                  (v) Only the  Company  can  register  the  Securities  and the
Shares under the Securities Act and any of the State Acts;

                  (vi)  Except  as  set  forth  in  this  Agreement  and  in the
Registration  Rights Agreement,  the Company has not made any representations to
the Investor that the Company will  register the  Securities or the Shares under
the Securities Act or any of the State Acts, or with respect to compliance  with
any exemption therefrom;

                  (vii) There are stringent  conditions for Investor's obtaining
an exemption for the resale of the Securities or the Shares under the Securities
Act and any State Acts; and

                  (viii) The  Company  may from time to time make stop  transfer
notations in its transfer  records to ensure  compliance with the Securities Act
and any State Acts.

         6.4 Investment Intent. The Investor is acquiring the Securities and the
Shares for the  Investor's  own  account  and not on behalf of any  person.  The
Investor is acquiring the  Securities and the Shares for investment and not with
a view to or for sale in connection  with any  distribution of the Securities or
the Shares or with the intent to divide the Investor's participation with others
or resell or otherwise  participate in a  distribution  of the Securities or the
Shares,  directly or  indirectly.  Neither the Investor nor anyone acting on the
Investor's  behalf has or will pay any commission or other  remuneration  to any
person in connection with the purchase of the Securities or the Shares.

         6.5 Transfer Restriction.  The Investor agrees not to effect any public
sale or distribution  (including sales pursuant to Rule 144 under the Securities
Act) of any Common  Stock  during the seven days prior to, and during the 90-day
period beginning on the effective date of, any underwritten  Demand Registration
or any  underwritten  Piggyback  Registration  (as such terms are defined in the
Registration Rights Agreement) unless the underwriters  managing such registered
public offering otherwise agree;  provided,  however, that the Investor may sell
shares of Common Stock in any such  registered  public  offering as part of such
offering in accordance with the Registration Rights Agreement.

         7.  MATTERS RELATING TO THE WARRANTS.

         7.1  Mandatory  Exercise of Warrants.  All but not less than all of the
Warrants must be exercised by the holders  thereof at the request of the Company
at the then applicable exercise price if and only if (i) the average closing bid
price for shares of Common Stock during the ninety (90)  calendar  days prior to
the date of such  exercise,  as well as for each of the ten (10)  calendar  days
prior to such  date,  exceeds  ten  dollars  ($10) per share,  as  appropriately
adjusted  for  stock  dividends,  splits,   recapitalizations  and  any  similar
occurrence; (ii) the Company has taken all actions necessary to cause all shares
of Common  Stock issued upon such  exercise to be  registered  immediately  upon
issue,  whether  through  registration  on a Form S-3 or otherwise,  so as to be
freely  tradable   immediately   upon  their  issuance  and  (iii)  the  Company
simultaneously redeems all outstanding Class B Preferred Stock.

         8.       BROKERS' FEE.

         The Company  represents and warrants that no liabilities  for brokerage
commissions,  finders'  fees and the like have been  incurred  by the Company in
connection with the financing  described in this  Agreement.  The Company hereby
agrees to indemnify  and hold the Investors  harmless  against and in respect of
any claim for brokerage commissions,  finders' fees or the like relating to this
Agreement or the  transactions  contemplated  hereby arising out of arrangements
made by the Company.

         9.       REMEDIES.

         (a) The  Company  agrees  to  indemnify  each  holder  of any  Security
(including such holder's respective directors, officers, partners, employees and
agents) and each person who controls  such holder  within the meaning of Section
15 of the Securities Act  (collectively  the  "INDEMNITEES"  and individually an
"INDEMNITEE")  to the full extent  permitted by law against all claims,  losses,
damages,  expenses and  liabilities,  including any amount paid in settlement of
any  action,  suit,  claim  or  proceeding  and all  legal  and  other  expenses
reasonably  incurred in investigating or defending  against the same (other than
losses arising solely from a diminution in the value of the Preferred Stock, the
Warrants or the Common Stock held by the Indemnitees) ("LOSSES"), arising out of
any breach of any  representation,  warranty,  covenant or agreement made by the
Company herein.

         (b) In addition,  the Company agrees to indemnify each  Indemnitee from
and against any and all Losses or actions in respect thereof  (including in such
Indemnitee's   capacity,   if  any,  as  a  director,   controlling   person  or
representative of the Company) as a result of or arising out of, or relating to,
(i) the execution,  delivery,  performance,  or enforcement of this Agreement or
any other instrument,  document or agreement executed by any Indemnitee pursuant
to this  Agreement;  (ii) the  solicitation of shareholder  approval  (including
liabilities under the Exchange Act) pursuant to Section 1.5 of this Agreement or
periodic reporting by the Company of transactions contemplated by this Agreement
under the Exchange Act; or (iii) any  transaction  financed or to be financed in
whole in part, directly or indirectly,  with the proceeds of the issuance of the
Securities,  except in each such case for Losses arising out of any Indemnitee's
gross negligence, willful misconduct or bad faith.

         (c) If the  indemnification  provided for in Section 9(b) above for any
reason is held by a court of  competent  jurisdiction  to be  unavailable  to an
Indemnitee in respect of any Losses,  then the Company,  in lieu of indemnifying
such Indemnitee  thereunder,  shall  contribute to the amount paid or payable by
such  Indemnitee  as a result  of such  losses,  claims,  damages,  expenses  or
liabilities  (i) in such  proportion as is  appropriate  to reflect the relative
benefits  received by the Company and the  Investors,  or (ii) if the allocation
provided  by clause  (i)  above is not  permitted  by  applicable  law,  in such
proportion as is appropriate to reflect not only the relative  benefits referred
to in clause  (i)  above  but also the  relative  fault of the  Company  and the
Investors  in  connection  with the action or  inaction  which  resulted in such
Losses, as well as any other relevant equitable consideration.

         (d) In case any proceeding  (including any governmental  investigation)
shall be instituted  involving  any person in respect of which  indemnity may be
sought pursuant to this Section 9, such person (the  "INDEMNIFIED  PARTY") shall
promptly  notify the  person  against  whom such  indemnity  may be sought  (the
"INDEMNIFYING  PARTY") in writing  promptly  after  such  indemnified  party has
actual  knowledge of any claim as to which  indemnity  may be sought;  provided,
however,  that the failure of any  Indemnified  Party to give notice as provided
herein shall not relieve the  Indemnifying  Party of its obligations  under this
Section 9. In case any such proceeding  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 and shall pay as incurred the fees and  disbursements of
such counsel related to such proceeding. In any such proceeding, any Indemnified
Party  shall  have the  right to  retain  its own  counsel  at its own  expense.
Notwithstanding the foregoing,  the Indemnifying Party shall pay as incurred the
fees and expenses of the counsel retained by the Indemnified  Party in the event
(i) the Indemnifying  Party and the Indemnified Party shall have mutually agreed
to the  retention  of such  counsel  or  (ii)  the  named  parties  to any  such
proceeding (including any impleaded parties) include both the Indemnifying Party
and the Indemnified Party and representation of both parties by the same counsel
would be inappropriate  due to actual or potential  differing  interests between
them as expressed  by opinion of counsel.  The  Indemnifying  Party shall not be
liable for any settlement of any proceeding effected without its written consent
but if  settled  with  such  consent  or if  there be a final  judgment  for the
plaintiff, the Indemnifying Party agrees to indemnify the Indemnified Party from
and against any loss or liability by reason of such settlement or judgment.

         (e) In the  event  indemnification  arises  hereunder  as a result of a
third party claim against the  Indemnified  Party, no  indemnification  shall be
made pursuant to this Section 9 until such time as the Indemnifying  Party shall
have been finally adjudicated  (including the exhaustion of all appeals that are
undertaken  with respect to any  adjudication)  or otherwise  bound to be liable
hereunder  to such  third  party;  provided,  however,  that all legal and other
expenses  reasonably  incurred in investigating or defending such claim shall be
paid by the Indemnifying Party at the time incurred by the Indemnified Party.

         (f) The indemnification and contribution provided for in this Section 9
will remain in full force and effect regardless of any investigation  made by or
on  behalf  of the  Indemnitee  or any  officer,  director,  employee,  agent or
controlling person of the Indemnitee.

         (g) Each party hereto  acknowledges that the other parties hereto shall
not have an adequate  remedy in the event that this  Agreement  is breached  and
that the non-breaching  parties may suffer irreparable damage and injury in such
event,  and that, in addition to any other  available  rights and remedies,  the
non-breaching  parties  shall  be  entitled  to an  injunction  restricting  the
breaching  party or parties,  as the case may be, from  committing or continuing
any violation of this Agreement.  The indemnification  provided for herein is in
addition to and not in lieu of any other rights and remedies  that the Investors
may have in law or equity.

         10.      AMENDMENTS AND WAIVERS.

         For the purposes of this  Agreement and all  agreements,  documents and
instruments   executed   pursuant   hereto  or  thereto,   except  as  otherwise
specifically  set forth  herein or  therein,  no course of dealing  between  the
Company  and the  Investors  and no  delay on the part of any  party  hereto  in
exercising any rights  hereunder or thereunder  shall operate as a waiver of the
rights hereof and thereof.  No covenant or other provision hereof or thereof may
be waived or amended otherwise than by a written  instrument signed by the party
so waiving or amending such covenant or other provision; provided, however, that
except as otherwise  provided  herein or therein,  amendments to this  Agreement
shall require and shall be effective upon the receipt of the written  consent of
(a) the  Company  and (b)  Investors  holding  Warrants  that upon the  exercise
thereof  represent  not less  than 75% of the  Common  Stock  issuable  upon the
exercise of all of the Warrants.  Any amendment or waiver effected in accordance
with this  paragraph  shall be binding upon each holder of any Securities at the
time  outstanding,  each future holder of all such Securities,  and the Company.
Notwithstanding any of the above, the conditions to Closing set forth in Section
2 of this Agreement may only be waived by each Investor itself.

         11.      SURVIVAL OF COVENANTS; ASSIGNABILITY OF RIGHTS.

         (a) All covenants,  agreements,  representations  and warranties of the
Company made herein and in the certificates, lists, exhibits, schedules or other
written information  delivered or furnished in connection therewith and herewith
shall be deemed  material  and to have been  relied upon by the  Investors,  and
shall  survive  the  delivery  of the  Securities  and shall bind the  Company's
successors  and assigns,  whether so  expressed or not, and all such  covenants,
agreements,  representations  and warranties  shall inure to the benefit of each
Investor's successors and assigns and to transferees of the Securities,  whether
so expressed or not.

         (b) The representations and warranties of the Investors made in Section
6 herein  shall be deemed  material  and to have been relied upon by the Company
and shall survive the delivery of the Securities and shall bind each  Investor's
successors  and assigns,  whether so  expressed  or not and all such  covenants,
agreements,  representations  and  warranties  shall inure to the benefit of the
Company's successors and assigns whether so expressed or not.

         (c) The Investors may transfer the Securities  only in compliance  with
Federal and state securities laws.

         12.      GOVERNING LAW.

         (a) This  Agreement  shall be deemed to be a contract  made under,  and
shall be construed in accordance with, the laws of the State of Georgia, without
giving  effect to any choice of law  provision or rule  (whether of the State of
Georgia or any other  jurisdiction)  that  would  cause the  application  of the
domestic substantive laws of any jurisdiction other than the State of Georgia.

         (b) The Company and each of the  Investors  that holds Class A Warrants
hereby  agrees that the Class A Warrants,  together  with the Class A Redeemable
Preferred  Stock  Purchase  Agreement  dated as of May 21,  1997  (the  "CLASS A
PURCHASE AGREEMENT") pursuant to which the Class A Warrants were issued,  shall,
notwithstanding  anything to the  contrary  set forth in the Class A Warrants or
such  Purchase  Agreement,  from and  after  the date  hereof  be deemed to be a
contract made under,  and shall be construed in accordance with, the laws of the
State of Georgia,  without  giving effect to any choice of law provision or rule
(whether of the State of Georgia or any other jurisdiction) that would cause the
application of the domestic  substantive laws of any jurisdiction other than the
State of Georgia.

         13.      SECTION HEADINGS.

         The  descriptive  headings in this  Agreement  have been  inserted  for
convenience  only and  shall  not be deemed  to limit or  otherwise  affect  the
construction of any provision hereof.

         14.      COUNTERPARTS.

         This  Agreement  may  be  executed  simultaneously  in  any  number  of
counterparts,  each of which when so executed and delivered shall be taken to be
an original;  but such  counterparts  shall together  constitute but one and the
same document.

         15.      NOTICES AND DEMANDS.

         Any notice or demand which,  by any provision of this  Agreement or any
agreement, document or instrument executed pursuant hereto or thereto, except as
otherwise provided therein,  is required or provided to be given shall be deemed
to have been  sufficiently  given or served  for all  purposes  three days after
being sent by first class mail, postage and charges prepaid,  hand delivery,  or
FedEx or similar courier service to the following addresses:  if to the Company,
at its mailing address set out above, or at any other address  designated by the
Company to the Investors in writing;  if to any Investor at its mailing  address
set  forth  in  Schedule  A,  or at any  other  address  (or  facsimile  number)
designated  by such  Investor  to the  Company.  Any notice  given by  facsimile
pursuant to this  Section 15 shall be followed by written  notice  delivered  by
FedEx or similar courier service.

         16.      SEVERABILITY.

         Whenever   possible,   each  provision  of  this  Agreement   shall  be
interpreted in such a manner as to be effective and valid under  applicable law,
but if any  provision of this  Agreement  shall be deemed  prohibited or invalid
under such  applicable law, such provision shall be ineffective to the extent of
such  prohibition or invalidity,  and such  prohibition or invalidity  shall not
invalidate  the  remainder  of such  provision or the other  provisions  of this
Agreement.

         17.      DEFINITIONS OF TERMS.

         As used in this  Agreement,  the  following  terms  have the  following
meanings or the meanings ascribed to them elsewhere in this Agreement:

DEFINITION                                                     SECTION

Agreement..............................................        Preamble
Purchase Shares........................................        1.1
Class B Preferred Stock................................        1.1
Common Stock...........................................        1.1
Purchase Price.........................................        1.2
Closing Date...........................................        1.3
Registration Rights Agreement..........................        2.8
SEC Documents..........................................        4.5
Audited Financial Statements...........................        4.6
Financial Statements...................................        4.6
Real Property..........................................        4.17
FCC Licenses...........................................        4.20
Big Apple Agreement....................................        4.25
Mercury Agreement......................................        4.25
Stockholders Agreement.................................        4.25
Code...................................................        4.26
Principal Holder.......................................        5.1
Indemnified Party......................................        9
Indemnifying Party.....................................        9
Class A Purchase Agreement.............................        12

 .........Commission.  The term "COMMISSION" means the Securities and Exchange
Commission, or any other federal agency at the time
administering the Securities Act.

 .........Communications Act.  The term "COMMUNICATIONS ACT" means the
Communications Act of 1934, as amended, or any similar law
then in force, and the rules, regulations and policies thereunder.

 .........Employee Benefit Plan.  The term "EMPLOYEE BENEFIT PLAN" means any 
employee benefit plan within the meaning of ss.3(3) of
ERISA maintained or contributed to by the Company or any ERISA Affiliate,
other than a Multiemployer Plan.

 .........Encumbrance.  The term "ENCUMBRANCE" means any mortgage, deed of trust,
pledge, security interest, encumbrance, option,right of first refusal, agreement
of sale, adverse claim, encroachment, right-of-way, burden or charge of any kind
or nature whatsoever or any item similar or related to the foregoing.

     .........Environmental   Law.  The  term   "ENVIRONMENTAL  LAW"  means  the
Comprehensive Environmental Response, Compensation and Liability Act of 1980, as
amended,  the Resources  Conservation and Recovery Act of 1976, as amended,  and
any applicable laws (whether or not statutory),  statutes,  regulations,  rules,
ordinances,  codes, licenses, permits, orders, approvals, plans, authorizations,
concessions,   and  similar  items  of  all  governmental  authorities  and  all
applicable  judicial,  administrative  and  regulatory  decrees,  judgments  and
orders, any of which relate to the protection of human health or the environment
from the effects of  Regulated  Material,  including,  but not limited to, those
pertaining to reporting,  licensing,  permitting,  investigating and remediating
emissions,  discharges,  releases or threatened  releases of Regulated  Material
into the air, surface water,groundwater or land, or relating to the manufacture,
processing,  distribution,  use,  treatment,  storage,  disposal,  transport  or
handling of  Regulated  Material.  

     ERISA. The term "ERISA" means the Employee  Retirement  Income Security Act
of 1974, any successor statute of similar import,  and the rules and regulations
thereunder, collectively, and from time to time amended and in effect.

 .........ERISA Affiliate.  The term "ERISA AFFILIATE" means any Person that is 
treated as a single employer with the Company under ss.414 of the Code.

 .........Exchange Act.  The term "EXCHANGE ACT" means the Securities Exchange 
Act of 1934, as amended. 

 .........FCC.  The term "FCC" means the Federal Communications Commission, or
any other federal agency at the time administering the Communications Act.

 .........Guaranteed Pension Plan.  The term "GUARANTEED PENSION PLAN" means any 
employee pension benefit plan within the meaning of ss.3(2) of ERISA maintained 
or contributed to by the Company or any ERISA Affiliate the benefits of which 
are guaranteed on termination in full or in part by the Pension Benefit Guaranty
Corporation (or any Person succeeding to the functions thereof).

 .........Key Employees.  The term "KEY EMPLOYEES" means the Chairman, the 
President, any Vice President and the Treasurer of the Company, or any person 
who is not an officer of the Company but is in charge of one or more of the 
following functions: sales, business development or operations.

 .........Knowledge.  The terms "KNOWLEDGE" or similar terms (whether or not
capitalized herein) when applied to the Company, means the knowledge of its 
Key Employees, officers or directors of the Company or any Subsidiary after 
reasonable inquiry.

 .........Material Adverse Effect.  The term "MATERIAL ADVERSE EFFECT" means any 
event, occurrence or condition, if the result thereof, either singly or in the 
aggregate would have a material and adverse effect upon the business, 
operations, properties, assets, prospects, profitability or condition 
(financial or otherwise) of the Company and its Subsidiaries taken as a whole.

 .........Multiemployer Plan.  The term "MULTIEMPLOYER PLAN" means a 
multiemployer plan within the meaning ofss.3(37) of ERISA.

 ........Person.  The term "PERSON" means any corporation, association, 
partnership, joint venture, organization, business or individual.

 .........Regulated Material.  The term "REGULATED MATERIAL" means substances 
that are defined or listed in, or otherwise classified pursuant to, any 
applicable Environmental Laws as "hazardous substances," "hazardous materials" 
"hazardous wastes" or "toxic substances," or any other formulation intended to 
define, list or classify substances by reason of deleterious properties such as 
ignitability, corrosivity, reactivity, radioactivity, carcinogenicity, 
reproductive toxicity or "EP toxicity," and petroleum and drilling fluids, 
produced waters and other wastes associated with the exploration, development, 
or production of crude oil, natural gas or geothermal energy.

 .........Rule 144.  The term "RULE 144" means Rule 144 promulgated under the 
Securities Act.

 .........Securities Act.  The term "SECURITIES ACT" means the Securities Act of
 1933, as amended.
  
 .........18.      EXPENSES.

 .........The  Company  shall  pay all  costs and  expenses  that it incurs  with
respect  to  the  negotiation,  execution,  delivery  and  performance  of  this
Agreement.  The Company shall  reimburse the Investors for (i) their  reasonable
travel and  out-of-pocket  expenses incurred in connection with the transactions
contemplated  hereby,  including,  without  limitation,  all  reasonable  audit,
consulting and other  professional  expenses  incurred as part of the Investors'
due  diligence  with  respect to the Company and the  transactions  contemplated
hereby,  (ii) the reasonable legal fees,  expenses and  disbursements of special
counsel for the Investors  (including both Edwards & Angell and Paul,  Hastings,
Janosfsky & Walker LLP) incurred in connection with the negotiation,  execution,
delivery  and  performance  of this  Agreement  and  the  other  agreements  and
documents  contemplated  hereby and in connection with any proposed  amendments,
waivers or consents to or to be provided in connection  with this  Agreement and
any such other agreements and documents or the transactions  contemplated hereby
or thereby, and the negotiation, preparation and delivery thereof.



<PAGE>


 .........19.      ENTIRE AGREEMENT.

 .........This  Agreement  and the  other  documents  delivered  pursuant  hereto
constitute the full and entire  understanding  and agreement between the parties
with respect to the subjects hereof and thereof,  including  without  limitation
all term sheets  heretofore  circulated and discussed  among the Company and the
Investors.



<PAGE>


 .........IN WITNESS WHEREOF, the undersigned have executed this Agreement as of
the day and year first above written.

Preferred Networks, Inc.

 By: ....

 Name: ..


ALTA COMMUNICATIONS VI, L.P.

By:    Alta Communications VI Management
       Partners, L.P., its General Partner

By:
      Robert F. Benbow, General Partner


ALTA COMM S BY S, LLC


By:
      Robert F. Benbow, Member


CENTENNIAL FUND IV, L.P.

By:    Centennial Fund V, L.P.,
       its General Partner

By:
      Jeffrey H. Schultz


SAUGATUCK CAPITAL COMPANY LIMITED PARTNERSHIP III

By:
      Richard Campbell


FLEET VENTURE RESOURCES, INC.

By:
      Robert M. VanDegna




<PAGE>


PNC CAPITAL CORP.

By:
      David Hillman


FLEET EQUITY PARTNERS, VI, L.P.

By:    Fleet Growth Resources, Inc.,
       its Corporate General Partner

By:
      Robert M. VanDegna


PRIMUS CAPITAL FUND III LIMITED PARTNERSHIP

By:
      Kevin McGinty


T/W ALFRED W. PUTNAM GST EXEMPT

By:
      Trustee:

By:
      Trustee:



Anne L. Putnam



Edward B. Putnam, Custodian for
  Fitzgerald B. Putnam Under the Uniform
  Transfers to Minors Act, Pennsylvania


WEBBMONT HOLDINGS L.P.

By:
      Name:
      Title:




<PAGE>


SPOTTED DOG FARM, L.P.

By:
      Name:
      Title:


RTM, INC.

By:
      Name:
      Title:



Mark H. Dunaway



Marcia M. Dunaway



John J. Hurley



Sylvia Hurley






<PAGE>



                                    SCHEDULES

4.1 -- Subsidiaries  4.3 --  Capitalization  4.6 -- Financial  Statements 4.7 --
Taxes 4.8 -- Litigation 4.9 -- ERISA 4.15 -- Material Contracts 4.16 -- Title to
Assets 4.18 -- Environmental


                                    EXHIBITS

Exhibit A  -- Schedule of Investors
Exhibit B  -- Form of Warrant
Exhibit C  -- Certificate of Amendment
Exhibit D  -- Second Amendment to Registration Rights Agreement







<PAGE>


                                    EXHIBIT 11 TO SCHEDULE 13D

                                       ARTICLES OF AMENDMENT
                                                OF
                                      PREFERRED NETWORKS, INC.

                                                         I.

         The name of the  corporation,  which was  organized  under the  Georgia
Business Corporation Code, is "Preferred Networks, Inc."

                                                         II.

         The  amendment  adopted  is to amend  Article  III of the  Articles  of
Incorporation  of the  Corporation to create a new series of Preferred  Stock of
the  Corporation,  designated as Class B Senior  Redeemable  Preferred Stock, by
adding the following to the existing Article III:

                  The Board of Directors of the  Corporation  hereby  authorizes
         the issuance of up to 5,500,000 shares of Preferred  Stock,  designated
         Class B Senior  Redeemable  Preferred  Stock  (the  "Class B  Preferred
         Stock"),  which shall have the following rights,  preferences,  powers,
         privileges, restrictions, qualifications, and limitations:

                  1. DIVIDENDS. The holders of the Class B Preferred Stock shall
         be  entitled  to  receive,  out of funds  legally  available  therefor,
         dividends  at a  rate  per  annum  of  fifteen  percent  (15%)  on  the
         liquidation  value of $1.50 per share (as calculated in accordance with
         the provisions of this Section 1, the "Accruing  Dividends").  Accruing
         Dividends  shall  accrue  from  day to day,  beginning  on the  date of
         issuance of the Class B Preferred  Stock and continue  through the date
         the Liquidation  Preference  Payments (as defined below) on the Class B
         Preferred  Stock  are paid in full in cash.  Accruing  Dividends  shall
         accrue  whether or not declared,  and whether or not there are profits,
         surplus or other funds of the  Corporation  legally  available  for the
         payment of  dividends,  shall be  cumulative,  and shall be  compounded
         annually.  The  Corporation  shall not be  obligated  to declare or pay
         Accruing Dividends except as set forth in Sections 2 and 4 herein.

                  2.  LIQUIDATION,  DISSOLUTION OR WINDING UP; CERTAIN  MERGERS,
         CONSOLIDATIONS  AND  ASSET  SALES.  In the  event of any  voluntary  or
         involuntary liquidation,  dissolution or winding up of the Corporation,
         the  assets  of  the   Corporation   available  for   distribution   to
         shareholders  shall be paid out,  prior to and in  preference  over any
         payment  in  respect  of the  shares of  Common  Stock or shares of the
         Corporation's  Class  A  Redeemable   Preferred  Stock  (the  "Class  A
         Preferred Stock") then outstanding,  as follows: each holder of Class B
         Preferred Stock shall be entitled to be paid in full in cash the sum of
         (i) one dollar and fifty  cents  ($1.50) per share of Class B Preferred
         Stock  held by such  holder  plus (ii) all  Accruing  Dividends  unpaid
         thereon  (whether or not  declared)  and any other  dividends,  if any,
         declared but unpaid thereon,  calculated to the date payment thereof is
         made (such sum payable  with respect to each share of Class B Preferred
         Stock  being  sometimes  referred  to as  the  "Liquidation  Preference
         Payments"). If upon such liquidation,  dissolution or winding up of the
         Corporation,  whether  voluntary  or  involuntary,  the  assets  to  be
         distributed  among the holders of the Class B Preferred  Stock shall be
         insufficient  to  permit  payment  in full to the  holders  of  Class B
         Preferred Stock of the Liquidation Preference Payments, then the entire
         assets of the  Corporation  to be so  distributed  shall be distributed
         ratably  among the  holders of Class B Preferred  Stock.  Upon any such
         liquidation,  dissolution or winding up of the Corporation, immediately
         after the  holders of Class B  Preferred  Stock shall have been paid in
         full the Liquidation  Preference Payments,  the remaining net assets of
         the Corporation  available for distribution shall be distributed first,
         ratably among the holders of Class A Preferred  Stock until the holders
         of Class A Preferred  Stock shall have  received an amount equal to the
         "Liquidation  Preference  Payments" on account of the Class A Preferred
         Stock as  provided  in  Section 2 of the Class A Terms (as  defined  in
         Section 4.2 below),  plus interest,  if any, pursuant to Section 4.5 of
         the Class A Terms,  and  second,  ratably  among the  holders of Common
         Stock.  Written notice of such liquidation,  dissolution or winding up,
         stating a  payment  date,  the  amount  of the  Liquidation  Preference
         Payments and the place where the Liquidation  Preference Payments shall
         be  payable,  shall be  delivered  in person,  mailed by  certified  or
         registered  mail,  return receipt  requested,  or sent by telecopier or
         telex,  not less than 20 days prior to the payment date stated therein,
         to the holders of record of Class B Preferred Stock,  such notice to be
         addressed to each such holder at its address as shown by the records of
         the Corporation. The consolidation or merger of the Corporation into or
         with any other  entity or  entities  that  results in the  exchange  of
         outstanding   shares  of  the   Corporation  for  securities  or  other
         consideration issued or paid or caused to be issued or paid by any such
         entity or  affiliate  thereof  (other than a merger the sole purpose of
         which is to reincorporate the Corporation in a different  jurisdiction)
         and the sale, lease, abandonment,  transfer or other disposition by the
         Corporation  of all or  substantially  all  its  assets  shall,  unless
         otherwise  provided in a notice  signed by the holders of not less than
         seventy-five  percent (75%) of the then issued and outstanding  Class B
         Preferred Stock delivered to the Corporation on or prior to the date of
         any such  transaction,  be deemed to be a  liquidation,  dissolution or
         winding up of the  Corporation  within the meaning of the provisions of
         this Section 2.

                  3. VOTING.  3.1 Voting.  Each holder of outstanding  shares of
         Class B Preferred  Stock shall be entitled to one vote with  respect to
         any and all matters  presented to the  shareholders  of the Corporation
         for their  action or  consideration  and shall be entitled to notice of
         any shareholder  meetings in accordance with the Corporation's  bylaws.
         Except as provided by law, by the provisions of Subsections 3.2 and 3.3
         below or by the provisions  establishing  any other series of Preferred
         Stock,  holders of Class B Preferred Stock and of any other outstanding
         series of  Preferred  Stock  shall vote  together  with the  holders of
         Common Stock as a single class.

                  3.2  Directors.  The holders of the Class B  Preferred  Stock,
         voting as a separate class, shall be entitled to elect one (1) director
         of the Corporation.

                  3.3  Restrictive  Provisions.  Except  as  expressly  provided
         herein  or as  required  by  law,  so  long as any  shares  of  Class B
         Preferred Stock remain  outstanding,  the Corporation shall not without
         the vote of or written  consent by the  holders of at least two- thirds
         of the then  outstanding  shares of Class B Preferred Stock voting as a
         class:

                           (a) take any action that (i)  directly or  indirectly
         amends,  alters or repeals  the  preferences,  special  rights or other
         powers of the Class B Preferred  Stock,  so as to affect  adversely the
         Class B Preferred Stock, including,  without limiting the generality of
         the foregoing, the authorization, creation or issuance of any shares of
         capital  stock or other  securities  (other  than  Common  Stock)  with
         preference or priority equal or superior to the Class B Preferred Stock
         or on a  parity  with  the  Class  B  Preferred  Stock  in any  regard,
         including,  without  limitation,  redemption  rights  and the  right to
         receive either  dividends or amounts  distributable  upon  liquidation,
         dissolution  or winding up of the  Corporation,  or (ii)  increases the
         authorized  number of shares of Class B Preferred Stock or (iii) causes
         the issuance of any authorized but unissued shares of Class B Preferred
         Stock;

                           (b)  redeem,   purchase  or  otherwise   acquire  for
         consideration  any shares of its capital  stock (or rights,  options or
         warrants to purchase such shares),  other than, in accordance  with the
         priority  set forth herein with  respect to the  redemption  of Class A
         Preferred  Stock and Class B Preferred  Stock,  (i) the  Securities  as
         defined in the Class A Redeemable  Preferred  Stock Purchase  Agreement
         dated as of May 21, 1997 entered into between the  Corporation  and the
         Investors  set forth  therein and (ii) the Class B  Preferred  Stock as
         provided for herein;

                           (c)      approve any material change in the line of 
         business of the Corporation or any Subsidiary;

                           (d)  enter   into  any   merger,   consolidation   or
         amalgamation,  or  any  recapitalization,  or  liquidate,  wind  up  or
         dissolve  itself (or suffer any  liquidation or dissolution) or convey,
         sell,  lease,   assign,   transfer  or  otherwise  dispose  of  all  or
         substantially all of its business, assets or property;

                            (e) amend its Articles of  Incorporation  or Bylaws,
         if such  amendment  would  directly or  indirectly  change any material
         rights, preferences,  privileges or limitations provided to the holders
         of Class B Preferred Stock therein,  or change the size of the Board of
         Directors or the  procedures for meetings of the Board of Directors and
         shareholders,   including   without   limitation,   notice  and  quorum
         requirements;

                           (f)  increase  the dividend  rate  applicable  to the
         Class A Preferred Stock, permit Class A Preferred Stock to be converted
         into Common Stock or any other equity or debt security or instrument of
         the  Corporation  or  otherwise  change,  directly or  indirectly,  the
         rights,  powers  or  preferences  of the Class A  Preferred  Stock in a
         manner that adversely affects the holders of Class B Preferred Stock;

                           (g) enter into any  acquisition  or series of related
         acquisitions  involving  an  aggregate  transaction  value  equal to or
         greater than $5,000,000; or

                           (h) increase its  indebtedness  for borrowed money in
         one or more  transactions,  whether  or not  related,  in an  aggregate
         amount  of  $5,000,000  in excess  of the  amount of the  Corporation's
         existing indebtedness and availability under existing credit facilities
         immediately  preceding  the date of  initial  issuance  of the  Class B
         Preferred Stock.

                  4. REDEMPTION. 4.1 Voluntary Redemption.  The Corporation,  at
         its  option,  may at any time  redeem  all but not less than all of the
         Class  B  Preferred  Stock  for  an  amount  per  share  equal  to  the
         Liquidation  Preference  Payments on the Class B Preferred  Stock as of
         the date such amount is paid in full in cash.

                  4.2 Mandatory Redemption. On the earlier of (i) March 17, 2003
         or (ii) the date as of which the  Corporation  proposes  to effect  the
         redemption  of the  Class A  Preferred  Stock  at the  election  of the
         Corporation  pursuant to notice given by the Corporation to the holders
         of Class A Preferred  Stock  pursuant to Section 4.1 of the Articles of
         Amendment filed June 16, 1997 creating the Class A Preferred Stock (the
         "Class A  Terms")  or (iii)  the date as of which  the  Corporation  is
         required to effect  redemption of any Class A Preferred  Stock pursuant
         to  notice  given  by any  holder  of  Class A  Preferred  Stock to the
         Corporation  pursuant  to Section 4.2 of the Class A Terms (in any such
         case,  the  "Redemption  Date") each holder of Class B Preferred  Stock
         shall be entitled to require the  Corporation to redeem all outstanding
         shares of Class B  Preferred  Stock held by such  holder,  prior to the
         Corporation  redeeming  any  shares of Class A  Preferred  Stock or any
         other  class or series of its  outstanding  capital  stock,  making any
         other payment or distribution on account of the Class A Preferred Stock
         (including,  without limitation  pursuant to Section 4.5 of the Class A
         Terms) or any other class or series of its  outstanding  capital stock,
         or  setting  aside any funds  for such  purposes,  at a price per share
         calculated as follows (in either case, the "Redemption Price"):

                           (a) If the  Redemption  Date is on or  prior to March
         17, 2001, the  Redemption  Price per share shall be equal to the sum of
         (i) the Liquidation  Preference Payments on the Class B Preferred Stock
         as of the  date  such  amount  is paid in full in cash,  plus  (ii) all
         additional  Accruing  Dividends  that would have accrued on the Class B
         Preferred Stock from the date of such redemption through March 17, 2001
         had such redemption not occurred.

                           (b) If the  Redemption  Date is after March 17, 2001,
         the  Redemption  Price  per  share  shall be  equal to the  Liquidation
         Preference  Payments on the Class B Preferred Stock as of the date such
         amount is paid in full in cash.

                  4.3  Redemption  Mechanics.  At  least  60 days  prior  to the
         Redemption  Date (in the case of Section 4.2(i) or (ii) above),  or, in
         the case of Section  4.2(iii)  above, no more than three days following
         the  Corporation's  receipt  of notice of  redemption  from a holder of
         Class  A  Preferred  Stock,  written  notice  of the  Redemption  Date,
         including a copy of any notice of  redemption  delivered by a holder of
         Class A Preferred  Stock in the case of Section  4.2(iii)  (in any such
         case, the "Redemption Notice") shall be delivered by the Corporation to
         each  holder of Class B  Preferred  Stock by  delivery in person of the
         Redemption  Date.  At any  time on or  prior to five  days  before  the
         Redemption Date (and, in the case of Section  4.2(iii) above,  not less
         than 10 days after delivery of the Redemption Notice, even if such date
         is after the  Redemption  Date),  written  notice shall be given to the
         Corporation  by each holder of Class B  Preferred  Stock who desires to
         require the  Corporation  to redeem shares of Class B Preferred  Stock,
         notifying the  Corporation of such redemption and specifying the number
         of shares of Class B Preferred  Stock to be redeemed  from such holder.
         From and after the close of business on a Redemption Date, unless there
         shall have been a default in the payment of the Redemption  Price,  all
         rights of holders of Class B  Preferred  Stock  electing to require the
         Corporation to redeem the Class B Preferred  Stock held by each of them
         (except the right to receive  the  Redemption  Price)  shall cease with
         respect to the shares to be redeemed on such Redemption  Date, and such
         shares  shall  not  thereafter  be  transferred  on  the  books  of the
         Corporation or be deemed to be outstanding for any purpose  whatsoever.
         If the funds of the Corporation legally available for redemption of the
         Class B Preferred  Stock on the  Redemption  Date are  insufficient  to
         redeem  the total  number of Class B  Preferred  Stock  electing  to be
         redeemed on such  Redemption  Date,  the  holders of such shares  shall
         share  ratably in any funds legally  available  for  redemption of such
         shares  according  to the  respective  amounts that would be payable to
         them if the full  number of shares to be  redeemed  on such  Redemption
         Date were actually redeemed. The Class B Preferred Stock required to be
         redeemed but not so redeemed shall remain  outstanding  and entitled to
         all rights and preferences provided herein. At any time thereafter when
         additional  funds of the  Corporation  are  legally  available  for the
         redemption of such Class B Preferred Stock, such funds will be used, at
         the end of the next succeeding fiscal quarter, to redeem the balance of
         such shares,  or such portion  thereof for which funds are then legally
         available, on the basis set forth above.

         . 4.4 Redeemed or Otherwise  Acquired Shares to be Retired.  Any shares
         of Class B  Preferred  Stock  redeemed  pursuant  to this  Section 4 or
         otherwise acquired by the Corporation in any manner whatsoever shall be
         canceled and shall not under any  circumstances  be  reissued;  and the
         Corporation  may from  time to time  take  such  appropriate  corporate
         action as may be necessary to reduce  accordingly  the number of shares
         of authorized Class B Preferred Stock.

                  4.5  Failure  to Redeem.  If the  Corporation  fails,  for any
         reason or for no reason,  to redeem on the  Redemption  Date any of the
         then outstanding Class B Preferred Stock elected by the holders thereof
         to be  redeemed in  accordance  with the terms and  conditions  of this
         Section 4, eighty  percent (80%) of the Accruing  Dividends that accrue
         from and after such  Redemption  Date (the "Cash  Dividends")  shall be
         payable  in cash and shall be due and  payable on the first day of each
         month after the Redemption Date. Cash Dividends paid by the Corporation
         shall satisfy Accruing  Dividends in an equal amount, and such Accruing
         Dividends shall not be duplicated in determining  the Redemption  Price
         or for any other  purpose.  If, as of each  yearly  anniversary  of the
         Redemption  Date, the Corporation  shall have failed to pay in full the
         Cash  Dividends for the  immediately  preceding  12-month  period,  the
         Redemption  Price  shall  be  recomputed  on the  basis  that  Accruing
         Dividends  for  such  12-month   period  had  accrued  at  an  annually
         compounding  rate per annum of twenty percent (20%).  If any redemption
         elected by the holders of Class B Preferred  Stock has not been made in
         full on or before the first  anniversary of the Redemption  Date, then,
         in addition to the rights of the holders of Class B Preferred Stock set
         forth herein and arising at law or in equity,  upon the written request
         of the holders of two-thirds of the then outstanding  Class B Preferred
         Stock the  Corporation  shall take all  actions  necessary  to submit a
         proposal to sell capital stock or assets of the Corporation  sufficient
         to  enable  the  Corporation  to pay the  Redemption  Price in full for
         stockholder approval including,  without limitation,  the engagement of
         an  investment  banking firm  reasonably  acceptable  to the holders of
         two-thirds of the then outstanding Class B Preferred Stock.

                  4.6  Failure  to  Surrender.  Should  any  holder  of  Class B
         Preferred  Stock redeemed  pursuant to this Section 4 fail to surrender
         the certificate or certificates representing the shares to be redeemed,
         the  Corporation  may  transfer  the  money   distributable   upon  the
         redemption to a trustee for such holder in accordance with and with the
         effect  set  forth  in  Section  14-2-641(b)  of the  Georgia  Business
         Corporation Code, or any successor provision.

         4.7 Ranking.  The Corporation  shall not pay any dividend on, redeem or
         make any other payment or  distribution on account of (or set aside any
         funds  for  such  purpose)  capital  stock  of  any  class  or  series,
         including,  without  limitation,  any shares of Class A Preferred Stock
         (including,  without limitation, making any payment pursuant to Section
         4.5 of the Class A Terms)  while any shares of Class B Preferred  Stock
         shall remain outstanding.

                                                        III.

         The date of the adoption of the amendment was March 16, 1998.

                                                         IV.

         The  amendment  was  duly  adopted  by the  Board of  Directors  of the
Corporation in accordance with the provisions of O.C.G.A. Section 14-2-602.

                                                             * * * * *



<PAGE>


         DULY EXECUTED and delivered by the undersigned on March 17, 1998.

                                                PREFERRED NETWORKS, INC.


                                            By:_______________________________
                                               Michael J. Saner
                                               President


                                                  *   *   *   *   *





<PAGE>


                       EXHIBIT 12 TO SCHEDULE 13D


THE SECURITIES REPRESENTED HEREBY HAVE BEEN ACQUIRED FOR INVESTMENT AND HAVE NOT
BEEN  REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS AMENDED OR ANY APPLICABLE
STATE  SECURITIES  ACTS.  THESE SECURITIES MAY NOT BE SOLD OR TRANSFERRED IN THE
ABSENCE OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM.


                            PREFERRED NETWORKS, INC.

                          COMMON STOCK PURCHASE WARRANT

Date of Issuance: March [  ], 1998                   Certificate No. W - B[  ]

                  FOR  VALUE  RECEIVED,  Preferred  Networks,  Inc.,  a  Georgia
corporation  (the "Company"),  hereby grants [ ] or its registered  assigns (the
"Registered  Holder") the right to purchase from the Company during the Exercise
Period  (as  defined  below) up to a number of shares of the  Company's  Warrant
Stock  equal to [ ] shares  of  Warrant  Stock at a price per share of $1.50 (as
adjusted from time to time hereunder, the "Exercise Price"). This Warrant is one
of several  warrants  (collectively,  the  "Warrants")  issued by the Company to
certain  investors  pursuant to the Class B Senior  Redeemable  Preferred  Stock
Purchase  Agreement  dated as of March [ ],  1998  (the  "Purchase  Agreement").
Certain  capitalized  terms  used  herein are  defined in Section 6 hereof.  The
amount  and  kind  of  securities  obtainable  pursuant  to the  rights  granted
hereunder and the Exercise  Price for such  securities are subject to adjustment
pursuant to the provisions contained in this Warrant.
               This Warrant is subject to the following provisions:
1.         Exercise of Warrant.

         1.1. Exercise Period.  The Registered Holder may exercise,  in whole or
in part (but not as to a fractional share of Warrant Stock), the purchase rights
represented  by this Warrant at any time and from time to time after the Date of
issuance of this Warrant to and including the fifth  anniversary  of the Date of
Issuance of this Warrant (the  "Exercise  Period").  The Company  shall give the
Registered  Holder written  notice of the expiration of the rights  hereunder at
least 30 days but not more than 90 days prior to the end of the Exercise Period.

         1.2.      Exercise Procedure.

                  (i) This Warrant shall be deemed to have been  exercised  when
the Company has received all of the following items (the "Exercise Time"):

                  (a) a completed Exercise Agreement,  as described in paragraph
         1.3  below,  executed  by the  Person  exercising  all or  part  of the
         purchase rights represented by this Warrant (the "Purchaser");

                  (b) this Warrant;

                  (c) if  this  Warrant  is not  registered  in the  name of the
         Purchaser,  an  Assignment  or  Assignments  in the form  set  forth in
         Exhibit II hereto  evidencing  the  assignment  of this  Warrant to the
         Purchaser, in which case the Registered Holder shall have complied with
         the provisions set forth in Section 9 hereof; and

                  (d)  either (1) a check  payable  to the  Company in an amount
         equal to the product of the Exercise Price  multiplied by the number of
         shares  of  Warrant  Stock  being  purchased  upon  such  exercise.(the
         "Aggregate  Exercise Price"),  (2) the surrender to the Company of debt
         or equity  securities of the Company having a Market Price equal to the
         Aggregate Exercise Price of the Warrant Stock being purchased upon such
         exercise (provided that for purposes of this  subparagraph,  the Market
         Price of any note or other debt security or any preferred stock, unless
         it is  publicly  traded,  shall be deemed to be equal to the  aggregate
         outstanding  principal  amount or  liquidation  value  thereof plus all
         accrued and unpaid  interest  thereon or accrued or declared and unpaid
         dividends  thereon)  or (3) a written  notice to the  Company  that the
         Purchaser  is  exercising  the  Warrant  (or  a  portion   thereof)  by
         authorizing the Company to withhold from issuance a number of shares of
         Warrant Stock  issuable upon such exercise of the Warrant  which,  when
         multiplied  by the Market Price of the Warrant  Stock,  is equal to the
         Aggregate  Exercise Price (and such withheld  shares shall no longer be
         issuable under this Warrant).

                  (ii)  Certificates  for shares of Warrant Stock purchased upon
exercise of this  Warrant  shall be  delivered  by the Company to the  Purchaser
within  five  business  days after the date of the  Exercise  Time.  Unless this
Warrant has expired or all of the purchase rights  represented  hereby have been
exercised,  the Company  shall  prepare a new Warrant,  substantially  identical
hereto,  representing the rights formerly represented by this Warrant which have
not expired or been  exercised  and shall within such five-day  period,  deliver
such  new  Warrant  to the  Person  designated  for  delivery  in  the  Exercise
Agreement.

                  (iii) The Warrant  Stock  issuable  upon the  exercise of this
Warrant shall be deemed to have been issued to the  Purchaser  and  outstanding,
and the  Purchaser  shall be deemed for all  purposes  to have become the record
holder of such Warrant Stock, at the Exercise Time.

                  (iv) The issuance of certificates  for shares of Warrant Stock
upon  exercise of this Warrant  shall be made without  charge to the  Registered
Holder or the  Purchaser  for any issuance tax in respect  thereof or other cost
incurred  by the  Company  in  connection  with such  exercise  and the  related
issuance of shares of Warrant  Stock.  Each share of Warrant Stock issuable upon
exercise of this Warrant shall, upon payment of the Exercise Price therefor,  be
fully paid and nonassessable and free from all liens and charges with respect to
the issuance thereof.

                  (v) The Company shall not close its books against the transfer
of this  Warrant or of any share of Warrant  Stock  issued or issuable  upon the
exercise of this Warrant in any manner which interferes with the timely exercise
of this Warrant. The Company shall from time to time take all such action as may
be  necessary  to assure  that the par value per share of the  unissued  Warrant
Stock  acquirable upon exercise of this Warrant is at all times equal to or less
than the Exercise Price then in effect.

                  (vi)  The  Company  shall  assist  and   cooperate   with  any
Registered  Holder or  Purchaser  required to make any  governmental  filings or
obtain any governmental approvals prior to or in connection with any exercise of
this warrant (including,  without limitation,  making any filings required to be
made by the Company).

                  (vii)  Notwithstanding  any  other  provision  hereof,  if  an
exercise  of any  portion  of this  Warrant is to be made in  connection  with a
registered  public  offering of the  Company's  capital stock or the sale of the
Company, the exercise of any portion of this Warrant may, at the election of the
holder hereof,  be conditioned  upon the  consummation of the public offering or
sale of the  Company,  in which  case  such  exercise  shall not be deemed to be
effective until the consummation of such transaction.

                  (viii)  The  Company  shall  at all  times  reserve  and  keep
available out of its authorized but unissued shares of Warrant Stock, solely for
the purpose of issuance upon the exercise of the Warrants, such number of shares
of Warrant Stock  issuable upon the exercise of all  outstanding  Warrants.  All
shares of Warrant Stock which are so issuable  shall,  when issued,  be duly and
validly issued,  fully paid and nonassessable and free from all taxes, liens and
charges.  The Company  shall take all such actions as may be necessary to assure
that all such shares of Warrant Stock may be so issued without  violation of any
applicable law or  governmental  regulation or any  requirements of any domestic
securities exchange upon which shares of Warrant Stock may be listed (except for
official notice of issuance, which shall be immediately delivered by the Company
upon each such issuance). The Company shall not take any action that would cause
the number of  authorized  but unissued  shares of Warrant Stock to be less than
the number of such shares  required to be reserved  hereunder  for issuance upon
exercise of all of the outstanding Warrants.

                  (ix) Any  certificate  for shares of Warrant Stock issued upon
the exercise of this Warrant shall contain a legend in substantially the form of
the legend set forth on the first page of this Warrant  except if such  exercise
is effected in  connection  with a registered  public  offering of the Company's
capital stock and the Warrant  Stock  issuable upon the exercise of this Warrant
are included in such registered offering.

         1.3.  Exercise  Agreement.  Upon  any  exercise  of this  Warrant,  the
Exercise  Agreement  shall be  substantially  in the form set forth in Exhibit I
hereto,  except that if the shares of Warrant  Stock are not to be issued in the
name of the  Person in whose  name this  Warrant  is  registered,  the  Exercise
Agreement shall also state the name of the Person to whom the  certificates  for
the  shares of Warrant  Stock are to be  issued,  and if the number of shares of
Warrant  Stock to be issued  does not  include  all the shares of Warrant  Stock
purchasable hereunder,  it shall also state the name of the Person to whom a new
Warrant for the unexercised  portion of the rights hereunder is to be delivered.
Such Exercise Agreement shall be dated the actual date of execution thereof

         1.4.  Fractional  Shares. If a fractional share of Warrant Stock would,
but for the provisions of paragraph 1.1, be issuable upon exercise of the rights
represented  by this  Warrant,  in lieu of issuing such  fractional  share,  the
Company  shall,  within five business days after the date of the Exercise  Time,
deliver to the Purchaser's order the Company's check payable to the Purchaser in
an amount equal to the  difference  between the Market Price of such  fractional
share  as of the  date of the  Exercise  Time  and the  Exercise  Price  of such
fractional share.

2.  ADJUSTMENT  OF EXERCISE  PRICE.  In order to prevent  dilution of the rights
granted  under this Warrant,  the Exercise  Price shall be subject to adjustment
from time to time as provided in this Section 2.

         2.1. Adjustment of Exercise Price upon Issuance of Common Stock. (i) If
and whenever  after the date of this Warrant,  the Company  issues or sells in a
private placement  (including in connection with any acquisition of any interest
in, or any entry into a joint  venture  with,  any business or  company),  or in
accordance  with  paragraph  2.2 is deemed to have issued or sold,  any share of
Common  Stock for a  consideration  per share  less than the  Exercise  Price in
effect  immediately prior to such time, then immediately upon such issue or sale
or deemed issue or sale, the Exercise Price shall be reduced to the lowest price
paid by the  purchaser  per share at which such  share of Common  Stock has been
issued or sold or is deemed to have  been  issued or sold.  Notwithstanding  the
foregoing,  if the Company  inadvertently  issues or sells, or is deemed to have
issued or sold,  any share of Common  Stock for a  consideration  per share less
than the Exercise Price in effect  immediately  prior to such time, the Exercise
Price  shall not be reduced if the  Company is able to rescind or  appropriately
modify the  transaction  within a  reasonable  time after it became aware of the
reduction in the Exercise Price that would otherwise occur.

                       (ii) Notwithstanding the foregoing and Section 2.2, there
shall be no adjustment to the Exercise Price or
the number of shares of Warrant Stock  obtainable  upon exercise of this Warrant
with  respect to (i)  issuance  of Common  Stock by the  Company  to  co-channel
licensees in lieu of cash owed,  not to exceed 350,000 shares of Common Stock in
the aggregate, (ii) issuance of up to 675,994 shares of Common Stock pursuant to
options granted by the Company prior to 1996 to purchase common stock at various
prices  between  $.97 and $1.50,  or (iii)  stock  issued by the  Company to the
seller  of  stock  or  assets  in an  arms  length  transaction  consummated  in
accordance  with  the  terms  of  Section  5.  12  of  the  Purchase  Agreement.
Notwithstanding anything to the contrary set forth herein, in no event shall the
Exercise Price at any time be an amount that is higher than the "Exercise Price"
provided  for in the  Common  Stock  Purchase  Warrants  issued  by the  Company
pursuant to the Class A Redeemable  Preferred Stock Purchase  Agreement dated as
of May 21, 1997 among the Company,  Fleet Equity Partners,  VI, L.P., Centennial
Fund IV, L.P. and certain other  persons  (such  warrants are referred to as the
"Class A  Warrants");  and if the  "Exercise  Price" of the Class A Warrants  is
adjusted in  accordance  with the terms thereof by reason of the issuance of the
Warrants,  then the Exercise Price of the Warrants shall  initially be the price
to which the "Exercise Price" of the Class A Warrants is so adjusted.

         2.2.  Effect on  Exercise  Price of Certain  Events.  For  purposes  of
determining the adjusted Exercise Price under paragraph 2.1, the following shall
be applicable:

                  (i)  Issuance  of Rights or  Options.  If the  Company  in any
manner  grants or sells any Options and the lowest price per share for which any
one share of Common Stock is issuable  upon the exercise of any such Option,  or
upon conversion or exchange of any Convertible  Security  issuable upon exercise
of such Option,  is less than the Exercise Price in effect  immediately prior to
the time of the granting or sale of such Option, then such share of Common Stock
shall be  deemed  to be  outstanding  and to have  been  issued  and sold by the
Company  at such time for such  lower  price per  share.  For  purposes  of this
paragraph,  the "lowest  price per share for which any one share of Common Stock
is issuable" shall be equal to the sum of the lowest amount of consideration (if
any) paid or  payable  by the  option  holder  with  respect to any one share of
Common  Stock upon the  granting  or sale of the  Option,  upon  exercise of the
Option and upon conversion or exchange of the Convertible  Security.  No further
adjustment  of the  Exercise  Price shall be made upon the actual  issue of such
Common Stock or of such  Convertible  Security upon the exercise of such Options
or upon the actual  issue of such Common  Stock upon  conversion  or exchange of
such Convertible Security.

                  (ii) Issuance of Convertible Securities. If the Company in any
manner issues or sells any  Convertible  Security and the lowest price per share
for which any one share of Common Stock is issuable upon  conversion or exchange
thereof is less than the Exercise Price in effect  immediately prior to the time
of such issue or sale, then such share or shares of Common Stock shall be deemed
to be  outstanding  and to have been issued and sold by the Company at such time
for such lower price per share. For the purposes of this paragraph,  the "lowest
price per share for which any one share of Common  Stock is  issuable"  shall be
equal to the sum of the lowest amount of consideration  (if any) paid or payable
by the  holder of the  Convertible  Security  with  respect  to any one share of
Common Stock upon the issuance or sale of the Convertible  Security and upon the
conversion or exchange of such Convertible  Security.  No further  adjustment of
the Exercise Price shall be made upon the actual issue of such Common Stock upon
conversion  or exchange of any  Convertible  Security,  and if any such issue or
sale of such Convertible Security is made upon exercise of any Options for which
adjustments  of the Exercise  Price had been or are to be made pursuant to other
provisions of this Section 2, no further  adjustment of the Exercise Price shall
be made by reason of such issue or sale.

                  (iii)  Change  in  Option  Price or  Conversion  Rate.  If the
purchase price provided for in any Options,  the  additional  consideration,  if
any,  payable  upon  the  issue,  conversion  or  exchange  of  any  Convertible
Securities, or the rate at which any Convertible Securities are convertible into
or  exchangeable  for Common Stock  changes at any time,  the Exercise  Price in
effect at the time of such change shall be adjusted  immediately to the Exercise
Price  that  would  have  been in  effect  at such  time  had  such  Options  or
Convertible  Securities  provided for such changed  purchase  price,  additional
consideration  or  changed  conversion  rate,  as the case  may be,  at the time
initially  granted,  issued or sold.  For purposes of this paragraph 2.2, if the
terms of any Option or Convertible  Security that was outstanding as of the Date
of  Issuance  of  this  Warrant  are  changed  in the  manner  described  in the
immediately preceding sentence, then such Option or Convertible Security and the
Common Stock deemed issuable upon exercise, conversion or exchange thereof shall
be deemed to have been issued as of the date of such  change;  provided  that no
such change  shall at any time cause the  Exercise  Price to be  increased to an
amount in excess of the Exercise Price in effect  immediately  upon the issuance
of this Warrant.

                  (iv) Treatment of Expired Options and Unexercised  Convertible
Securities. Upon the expiration of any Option or the termination of any right to
convert or exchange  any  Convertible  Securities  without the  exercise of such
Option or right, the Exercise Price then in effect shall be adjusted immediately
to the  Exercise  Price  that  would  have  been in  effect  at the time of such
expiration or  termination  had such Option or  Convertible  Securities,  to the
extent  outstanding  immediately prior to such expiration or termination,  never
been issued;  provided that if such expiration or termination would result in an
increase  in the  Exercise  Price then in  effect,  such  increase  shall not be
effective  until 30 days  after  written  notice  thereof  has been given to all
holders of the Warrants.  For purposes of this  paragraph 2.2, the expiration or
termination of any Option or Convertible Security that was outstanding as of the
Date of Issuance of this Warrant shall not cause the Exercise Price hereunder to
be adjusted  unless,  and only to the extent that, a change in the terms of such
Option or Convertible  Security caused it to be deemed to have been issued after
the Date of Issuance of this Warrant.

                  (v)  Calculation  of  Consideration  Received.  If any  Common
Stock,  Options or  Convertible  Securities are issued or sold or deemed to have
been  issued or sold for cash,  the  consideration  received  therefor  shall be
deemed to be the amount  paid by the  holder to the  Company  for such  security
(including discounts, commissions and related expenses paid to independent third
parties). In case any Common Stock, Options or Convertible Securities are issued
or sold for a  consideration  other  than cash  (including  in  connection  with
acquisitions),  the  amount  of the  consideration  other  than cash paid by the
holder  shall  be the  fair  value  of such  consideration,  except  where  such
consideration consists of securities,  in which case the amount of consideration
received  by the  Company  shall be the Market  Price  thereof as of the date of
receipt. In case any Common Stock, Options or Convertible  Securities are issued
to the owners of the non-surviving entity in connection with any merger in which
the Company is the surviving  corporation,  the amount of consideration therefor
shall be deemed  to be the fair  value of such  portion  of the net  assets  and
business of the  non-surviving  entity as is  attributable to such Common Stock,
Options  or  Convertible  Securities,  as the case may be. The fair value of any
consideration  other than cash or securities shall be determined  jointly by the
Company and the  Registered  Holders of Warrants  representing a majority of the
shares of Warrant  Stock  obtainable  upon  exercise of such  Warrants.  If such
parties are unable to reach agreement  within a reasonable  period of time, such
fair value shall be determined by an appraiser  jointly  selected by the Company
and the Registered Holders of Warrants  representing a majority of the shares of
Warrant Stock  obtainable upon exercise of such Warrants.  The  determination of
such  appraiser  shall be final and binding on the  Company  and the  Registered
Holders of the Warrants,  and the fees and expenses of such  appraiser  shall be
paid by the Company.

                  (vi) Integrated Transactions.  In case any Option is issued in
connection with the issue or sale of other  securities of the Company,  together
comprising one  integrated  transaction  in which no specific  consideration  is
allocated to such Options by the parties thereto, the Options shall be deemed to
have been issued for a consideration of $.01.

                  (vii)  Treasury  Shares.  The number of shares of Common Stock
outstanding  at any given time does not include  shares  owned or held by or for
the account of the Company or any Subsidiary,  and the disposition of any shares
so owned or held shall be considered an issue or sale of Common Stock.

                  (viii)  Record  Date.  If the  Company  takes a record  of the
holders  of Common  Stock for the  purpose  of  entitling  them (A) to receive a
dividend  or  other  distribution   payable  in  Common  Stock,  Options  or  in
Convertible Securities or (B) to subscribe for or purchase Common Stock, Options
or Convertible Securities,  then such record date shall be deemed to be the date
of the issue or sale of the shares of Common Stock deemed to have been issued or
sold  upon  the  declaration  of such  dividend  or the  making  of  such  other
distribution  or the  date of the  granting  of such  right of  subscription  or
purchase, as the case may be.

         2.3.  Subdivision or Combination of Common Stock. If the Company at any
time  subdivides  (by any  stock  split,  stock  dividend,  recapitalization  or
otherwise) one or more classes of its outstanding  shares of Common Stock into a
greater number of shares, the Exercise Price in effect immediately prior to such
subdivision shall be proportionately reduced and the number of shares of Warrant
Stock  obtainable  upon  exercise  of  this  Warrant  shall  be  proportionately
increased.  If the  Company at any time  combines  (by  reverse  stock  split or
otherwise) one or more classes of its outstanding  shares of Common Stock into a
smaller number of shares, the Exercise Price in effect immediately prior to such
combination  shall be  proportionately  increased  and the  number  of shares of
Warrant Stock obtainable upon exercise of this Warrant shall be  proportionately
decreased.

         2.4. Reorganization,  Reclassification,  Consolidation, Merger or Sale.
Prior  to the  consummation  of any  Organic  Change,  the  Company  shall  make
appropriate  provision (in form and  substance  satisfactory  to the  Registered
Holders of the Warrants  representing a majority of the Warrant Stock obtainable
upon  exercise  of all  Warrants  then  outstanding)  to ensure that each of the
Registered  Holders of the Warrants shall  thereafter  have the right to acquire
and  receive,  in lieu of or  addition  to (as the  case may be) the  shares  of
Warrant  Stock  immediately  theretofore  acquirable  and  receivable  upon  the
exercise of such holder's Warrant, such shares of stock, securities or assets as
may be issued or payable with respect to or in exchange for the number of shares
of Warrant Stock immediately theretofore acquirable and receivable upon exercise
of such holder's  Warrant had such Organic  Change not taken place.  In any such
case,  the  Company  shall make  appropriate  provision  (in form and  substance
satisfactory to the Registered  Holders of the Warrants  representing a majority
of the Warrant Stock obtainable upon exercise of all Warrants then  outstanding)
with respect to such holders' rights and interests to ensure that the provisions
of this Section 2 and Sections 5 and 6 hereof shall  thereafter be applicable to
the Warrants (including,  in the case of any such consolidation,  merger or sale
in which the successor entity or purchasing entity is other than the Company, an
immediate  adjustment  of the  Exercise  Price to the value for the Common Stock
reflected  by  the  terms  of  such   consolidation,   merger  or  sale,  and  a
corresponding  immediate  adjustment  in the number of shares of  Warrant  Stock
acquirable  and  receivable  upon  exercise  of the  Warrants,  if the  value so
reflected is less than the Exercise  Price in effect  immediately  prior to such
consolidation,   merger  or  sale).  The  Company  shall  not  effect  any  such
consolidation,  merger or sale,  unless prior to the consummation  thereof,  the
successor  entity (if other than the Company)  resulting from  consolidation  or
merger or the entity  purchasing  such assets assumes by written  instrument (in
form  and  substance   satisfactory  to  the  Registered   Holders  of  Warrants
representing a majority of the Warrant Stock  obtainable upon exercise of all of
the Warrants then  outstanding),  the  obligation to deliver to each such holder
such shares of stock,  securities or assets as, in accordance with the foregoing
provisions, such holder may be entitled to acquire.

           2.5. Certain Events.  If any event occurs of the type contemplated by
the  provisions  of  this  Section  2 but  not  expressly  provided  for by such
provisions  (including,  without limitation,  the granting of stock appreciation
rights,  phantom  stock rights or other rights with equity  features),  then the
Company's  board  of  directors  shall  make an  appropriate  adjustment  in the
Exercise  Price  and the  number  of shares of  Warrant  Stock  obtainable  upon
exercise  of this  Warrant  so as to protect  the  rights of the  holders of the
Warrants;  provided that no such adjustment shall increase the Exercise Price or
decrease  the  number  of  shares  of  Warrant  Stock  obtainable  as  otherwise
determined pursuant to this Section 2.

         2.6.      Notices.

                  (i) Immediately upon any adjustment of the Exercise Price, the
Company shall give written  notice  thereof to the  Registered  Holder,  setting
forth in reasonable detail and certifying the calculation of such adjustment.

                  (ii) The Company shall give written  notice to the  Registered
Holder at least 20 days prior to the date on which the Company  closes its books
or takes a record (A) with  respect to any  dividend  or  distribution  upon the
Common Stock, (B) with respect to any pro rata subscription  offer to holders of
Common Stock or (C) for  determining  rights to vote with respect to any Organic
Change, dissolution or liquidation.

                  (iii)  The  Company  shall  also  give  written  notice to the
Registered  Holders  at least 20 days  prior  to the date on which  any  Organic
Change, dissolution or liquidation shall take place.

3. MANDATORY  EXERCISE OF WARRANT.  Upon the occurrence of certain  events,  the
holder hereof may be required to exercise its right to purchase all but not less
than all of the shares of Common Stock  obtainable upon exercise of this Warrant
in accordance with the provisions of Section 7.1 of the Purchase Agreement.

4. DIVIDENDS. If the Company declares or pays a Dividend, then the Company shall
set aside  such  Dividend  for  payment  upon  exercise  of this  Warrant to the
Registered Holder of this Warrant the Dividend that would have been paid to such
Registered  Holder on the Warrant  Stock had this Warrant  been fully  exercised
immediately prior to the date on which a record is taken for such Dividend,  or,
if no record is taken,  the date as of which the record  holders of Common Stock
entitled to such dividends are to be determined.

5.  PURCHASE  RIGHTS.  If at any time the  Company  grants,  issues or sells any
Purchase Rights, then the Registered Holder of this Warrant shall be entitled to
acquire,  upon the terms  applicable  to such  Purchase  Rights,  the  aggregate
Purchase  Rights which such Holder  could have  acquired if such Holder had held
the number of shares of Warrant Stock acquirable upon complete  exercise of this
Warrant  immediately  before  the date on which a record is taken for the grant,
issuance or sale of such Purchase  Rights,  or, if no such record is taken,  the
date as of which the record holders of Common Stock are to be determined for the
grant, issue or sale of such Purchase Rights.

6. DEFINITIONS. The following terms have meanings set forth below:

                  "Common Stock" means the Company's  Common Stock, no par value
per share,  and except for purposes of the shares  obtainable  upon  exercise of
this Warrant, any capital stock of any class of the Company hereafter authorized
that is not  limited  to a fixed sum or  percentage  of par or  stated  value in
respect to the rights of the holders  thereof to  participate in dividends or in
the  distribution of assets upon any  liquidation,  dissolution or winding up of
the Company.

                  "Convertible   Securities"   means  any  stock  or  securities
(directly or indirectly) convertible into or exchangeable for Common Stock.

                  "Dividend" means any dividend or other  distribution  upon the
Common Stock except for a stock dividend payable in shares of Common Stock.

                  "Market Price" means,  as to any security,  the average of the
closing prices of such security's sales on all domestic securities  exchanges on
which such  security may at the time be listed,  or, if there have been no sales
on any such exchange on any day, the average of the highest bid and lowest asked
prices  on all such  exchanges  at the end of such  day,  or, if on any day such
security  is not so  listed,  the  average of the  representative  bid and asked
prices quoted in the NASDAQ System as of 4:00 P.M.,  New York time, on such day,
or, if on any day such security is not quoted in the NASDAQ System,  the average
of the  highest  bid  and  lowest  asked  prices  on  such  day in the  domestic
over-the-counter   market  as  reported  by  the  National   Quotation   Bureau,
Incorporated,  or any similar successor organization, in each such case averaged
over a period of 21 days  consisting  of the day as of which  "Market  Price" is
being  determined  and the 20  consecutive  business  days  prior  to such  day;
provided that if such security is listed on any domestic securities exchange the
term "business  days" as used in this sentence means business days on which such
exchange is open for trading.  If at any time such security is not listed on any
domestic  securities  exchange  or quoted in the NASDAQ  System or the  domestic
over-the-counter  market,  the "Market  Price"  shall be the fair value  thereof
determined  jointly  by the  Company  and the  Registered  Holders  of  Warrants
representing  a majority of the Warrant Stock  purchasable  upon exercise of all
the Warrants then outstanding; provided that if such parties are unable to reach
agreement  within  a  reasonable  period  of  time,  such  fair  value  shall be
determined by an appraiser  jointly  selected by the Company and the  Registered
Holders of Warrants  representing  a majority of the Warrant  Stock  purchasable
upon exercise of all the Warrants then  outstanding.  The  determination of such
appraiser  shall be final and binding on the Company and the Registered  Holders
of the Warrants,  an. d the fees and expenses of such appraiser shall be paid by
the Company.

                  "Options"  means any  rights or options  to  subscribe  for or
purchase Common Stock or Convertible Securities.

                  "Organic Change" means any  recapitalization,  reorganization,
reclassification, consolidation, merger, sale of all or substantially all of the
Company's assets or other transaction, in each case, which is effected in such a
way that the holders of Common Stock are entitled to receive (either directly or
upon subsequent  liquidation) stock,  securities or assets with respect to or in
exchange for Common Stock.

                  "Person" means an individual, a partnership,  a joint venture,
a  corporation,   a  limited  liability  company,  a  trust,  an  unincorporated
organization and a government or any department or agency thereof.

                  "Purchase Rights" means any Options, Convertible Securities or
rights to purchase stock, warrants, securities or other property pro rata to the
record holders of any class of Common Stock.

                  "Warrant  Stock" means shares of the  Company's  Common Stock;
provided  that if there is a change  such  that  the  securities  issuable  upon
exercise of the Warrant are issued by an entity  other than the Company or there
is a  change  in the  type or class of  securities  so  issuable,  then the term
"Warrant  Stock" shall mean one share of the security  issuable upon exercise of
the Warrant if such  security is issuable in shares,  or shall mean the smallest
unit in which such  security  is issuable  if such  security is not  issuable in
shares.

                  Other  capitalized  terms used in this Warrant but not defined
herein shall have the meanings set forth in the Purchase Agreement.

7. NO VOTING RIGHTS;  LIMITATIONS  OF LIABILITY.  This Warrant shall not entitle
the holder hereof to any voting  rights or other rights as a stockholder  of the
Company.  No  provision  hereof,  in the  absence of  affirmative  action by the
Registered  Holder to purchase  Common Stock,  and no enumeration  herein of the
rights or privileges of the  Registered  Holder shall give rise to any liability
of such holder for the  Exercise  Price of Common Stock  acquirable  by exercise
hereof or as a stockholder of the Company.

8. WARRANT  TRANSFERABLE.  Subject to the transfer conditions referred to in the
legend endorsed hereon,  this Warrant and all rights hereunder are transferable,
in whole or in part, without charge to the Registered Holder,  upon surrender of
this  Warrant  with a properly  executed  Assignment  (in the form of Exhibit II
hereto) at the principal office of the Company.

9.        WARRANT EXCHANGEABLE FOR DIFFERENT DENOMINATIONS.  This
Warrant is exchangeable,  upon the surrender hereof by the Registered  Holder at
the principal office of the Company, for new Warrants of like tenor representing
in the  aggregate  the rights  hereunder,  and each of such new  Warrants  shall
represent such portion of such rights as is designated by the Registered  Holder
at the time of such  surrender.  The  date the  Company  initially  issues  this
Warrant  shall be deemed to be the "Date of Issuance"  hereof  regardless of the
number of times new  certificates  representing  the unexpired  and  unexercised
rights  formerly  represented  by this  Warrant  shall be issued.  All  Warrants
representing  portions  of the rights  hereunder  are  referred to herein as the
"Warrants."

10. REPLACEMENT. Upon receipt of evidence reasonably satisfactory to the Company
(an affidavit of the Registered  Holder shall be  satisfactory) of the ownership
and the loss,  theft,  destruction or mutilation of any  certificate  evidencing
this  Warrant,  and in the case of any such  loss,  theft or  destruction,  upon
receipt of indemnity  reasonably  satisfactory to the Company  (provided that if
the holder is a  financial  institution  or other  institutional  investor  with
capital and surplus in excess of three times the value of the Common  Stock that
can be purchased upon exercise of this Warrant, such holder's agreement shall be
satisfactory),  or, in the case of any such  mutilation  upon  surrender of such
certificate,  the Company shall (at its expense)  execute and deliver in lieu of
such  certificate a new  certificate of like kind  representing  the same rights
represented by such lost, stolen,  destroyed or mutilated  certificate and dated
the date of such lost, stolen, destroyed or mutilated certificate.

11. NOTICES. Except as otherwise expressly provided herein, all notices referred
to in this Warrant shall be in writing and shall be delivered  personally,  sent
by reputable  overnight  courier service (charges prepaid) or sent by registered
or certified mail, return receipt requested, postage prepaid and shall be deemed
to have been given when so delivered,  sent or deposited in the U.S. Mail (i) to
the  Company,  at its  principal  executive  offices and (ii) to the  Registered
Holder of this Warrant, at such holder's address as it appears in the records of
the Company (unless otherwise indicated by any such holder).

12. AMENDMENT AND WAIVER. Except as otherwise provided herein, the provisions of
the  Warrants  may be  amended  and the  Company  may  take  any  action  herein
prohibited,  or omit to perform any act herein  required to be  performed by it,
only if the Company has obtained the written  consent of the Registered  Holders
of  Warrants  representing  at least  66-2/3%  of the  shares of  Warrant  Stock
obtainable  upon  exercise  of the  Warrants;  provided  that no such action may
change the  Exercise  Price of the  Warrants or the number of shares or class of
stock  obtainable  upon exercise of each Warrant  without the written consent of
the Registered  Holders of Warrants  representing  at least 85% of the shares of
Warrant Stock obtainable upon exercise of the Warrants.

13. DESCRIPTIVE HEADINGS; GOVERNING LAW. The descriptive headings of the several
Sections and paragraphs of this Warrant are inserted for convenience only and do
not constitute a part of this Warrant.  All issues and questions  concerning the
construction,  validity, enforcement and interpretation of this Warrant shall be
governed by, and construed in accordance with, the laws of the State of Georgia,
without  giving effect to any choice of law or conflict of law provision or rule
(whether of the State of Georgia or any other jurisdiction) that would cause the
application of the domestic  substantive laws of any jurisdiction other than the
State of Georgia.

IN  WITNESS  Whereof,  the  Company  has  caused  this  Warrant to be signed and
attested by its duly  authorized  officers  under its  corporate  seal and to be
dated the Date of Issuance hereof

                                           PREFERRED NETWORKS, INC.


                                         By
                                        Its

[Corporate Seal]

Attest:






Title:






<PAGE>


                                   EXHIBIT I

                               EXERCISE AGREEMENT

To:                                                                   Dated:

                  The  undersigned,  pursuant to the provisions set forth in the
attached  Warrant  (Certificate  No. W-B[ ]), hereby agrees to subscribe for the
purchase  of___________  shares of the Common Stock  covered by such Warrant and
makes payment  herewith in full therefor at the price per share provided by such
Warrant.

                  Payment shall be made by (check one of the following):

                  _____ 1.  Delivery of $________ transmitted hereby by check.

                  _____ 2.  Delivery of stock certificate no(s). ____________ 
and surrender of____ shares of the Company's _________ stock evidenced thereby 
having a Market Price on the date hereof of $_______ (computed in accordance 
with the definition of Market Price set forth in Section 7 of the Warrant)
(i.e. a "cashless" exercise).

                  _____  3.  Delivery  of  the  Company's  _______  Note  in the
aggregate  principal  amount of $_______ and  surrender of $_______ in principal
amount  thereof,  plus  accrued and unpaid  interest in the amount of  $________
having a Market Price on the date hereof of $___________ (computed in accordance
with the definition of Market Price set forth in Section 7 of the  Warrant)(i.e.
a "cashless" exercise).

                  _____  4.  Surrender  of_________  shares  of  Warrant  Stock,
exerciseable  under  Warrant  No.  having a Market  Price on the date  hereof of
$_________ (computed in accordance with the definition of Market Price set forth
in Section 6 of the Warrant)(i.e., a net issuance exercise).

                                        Signature _____________________ Address
                 


<PAGE>

                                    EXHIBIT II

                                   ASSIGNMENT

                  FOR  VALUE  RECEIVED,   _____________________________   hereby
sells,  assigns and  transfers  all of the rights of the  undersigned  under the
attached  Warrant  (Certificate No. W-B[ ]) with respect to the number of shares
of the Common Stock covered thereby set forth below, unto:

Names of Assignee           Address                          No. of Shares



                                                   Signature



                                                   Witness



<PAGE>
                              EXHIBIT 13 TO SCHEDULE 13D



                               SECOND AMENDMENT TO
                          REGISTRATION RIGHTS AGREEMENT

         This  Second   Amendment  to   Registration   Rights   Agreement  (this
"Amendment")  is dated as of March  17,  1998 by and among  Preferred  Networks,
Inc., a Georgia  corporation (the "Company") and each of the Persons listed as a
Stockholder  on the  signature  pages  to this  Amendment  (referred  to  herein
collectively as the "Stockholders").

         The Company  and the  Stockholders  have  entered  into a  Registration
Rights Agreement dated as of June 21, 1995, as amended (the "Registration Rights
Agreement").  Subsequent to entering into the Registration Rights Agreement, the
Company and the  Stockholders  consented  to certain  actions by the Company and
waived compliance with certain  provisions of the Registration  Rights Agreement
pursuant to that certain Consent and Waiver  Agreement dated as of September 12,
1996 and that certain Second Waiver and Consent Agreement,  dated as of November
12, 1996, and amended the Registration Rights Agreement pursuant to that certain
Amendment to Registration Rights Agreement dated as of June 16, 1997 (the "First
Amendment").

         The  Company and certain  investors,  including  certain of the persons
defined as Primary Holders in the Registration Rights Agreement,  are parties to
a Class B Senior Redeemable Preferred Stock Purchase Agreement dated as of March
17, 1998 (the "1998 Purchase Agreement").

         It is a condition to closing under the 1998 Purchase Agreement that the
Registration Rights Agreement be amended as set forth herein.

         NOW, THEREFORE,  in consideration of the premises, the mutual covenants
and agreements of the parties herein and in the Registration  Rights  Agreement,
and other good and valuable consideration,  the receipt and sufficiency of which
are hereby acknowledged, the parties hereby agree as follows:

         1.       Defined Terms.  Capitalized terms not defined in this
Amendment are used as defined in the Registration Rights Agreement, including 
the First Amendment.

         2. Definition of "Primary Holders". The definition of "Primary Holders"
set forth in the first  paragraph  of the  preamble to the  Registration  Rights
Agreement  is hereby  expanded  to  include  all  persons  purchasing  stock and
warrants pursuant to the 1998 Purchase Agreement.

         3.  Section  1(a)(i).   Section  1(a)(i)  of  the  Registration  Rights
Agreement is hereby amended by adding the following at the end thereof:

         Holders of at least 33.33% of the Class B Warrant Securities shall also
         be entitled  to request  Primary  Demand  Registrations,  provided  the
         estimated  aggregate offering value for all securities included in such
         a registration initiated by the Class B Holders is at least $5,000,000.

         4. Section 7(f).  Section 7(f) of the Registration  Rights Agreement is
hereby amended to read in full as follows:

                  "Warrants" means the contingent stock purchase warrants issued
to the Primary Holders  pursuant to the Purchase  Agreement,  the stock purchase
warrants issued to the Primary  Holders  pursuant to Sections 1.3 and 1.4 of the
1997 Purchase  Agreement,  and the stock purchase warrants issued to the Class B
Holders pursuant to the 1998 Purchase Agreement.

         5. Section 7. Section 7 is amended by adding the  following new defined
terms:

                  "Class B Holder" means a holder of Class B Warrant Securities.

                  "Class B Warrant Securities" means the stock purchase warrants
issued pursuant to the 1998 Purchase  Agreement and Common Stock issued upon the
exercise of such warrants.

         6. No Other Effect. Except as specifically set forth in this Amendment,
the Registration Rights Agreement shall remain in full force and effect.

         7.  Counterparts.  This  Amendment  may be  executed  in  two  or  more
counterparts,  each of which  shall  be an  original  and  each of  which  shall
constitute one and the same amendment. Any party may deliver an executed copy of
this Amendment by facsimile  transmission to the other parties and such delivery
shall have the same force and effect as  delivery  of a manually  signed copy of
this Amendment.

                         [signatures on following pages]




<PAGE>


         IN WITNESS WHEREOF,  the parties have executed this Amendment as of the
date first written above.

THE COMPANY:                                PREFERRED NETWORKS, INC.



March ____, 1998                            By:

                                                     Its:



THE STOCKHOLDERS:

                         FLEET EQUITY PARTNERS VI, L.P.

                                      By:    Fleet Growth Resources II, Inc.

                                      Its:     General Partner

March ____, 1998                      By:

                                      Its:

                                     Address: 50 Kennedy Plaza
                                              Providence, RI

                          FLEET VENTURE RESOURCES, INC.


March ____, 1998                            By:

                                                     Its:

                            Address: 50 Kennedy Plaza
                              Providence, RI 02903


                           CHISHOLM PARTNERS II, L.P.

                                        By:      Silverado II, L.P.

                                       Its:     General Partner

                                        By:      Silverado II Corp.

                                       Its:     General Partner

March ____, 1998                        By:

                                        Its:
 
                                        Address:  50 Kennedy Plaza
                                                  Providence, RI 02903


                          ALTA COMMUNICATIONS, VI, L.P.

                                    By:      Alta Communications VI Management
                                             Partners L.P.

                                    Its:     General Partner

March ____, 1998                    By:      ________________________

                                    Its:     ________________________

                                    Address: One Embarcadero Ctr.
                                             Suite 4050
                                             San Francisco, CA 94111

                          ALTA COMM S BY S, LLC

March ____, 1998                   By:

                                   Its:

                                   Address: One Embarcadero Ctr.
                                            Suite 4050
                                            San Francisco, CA 94111


<PAGE>



                            CENTENNIAL FUND IV, L.P.

                                   By:      Centennial Holdings IV, L.P.

                                   Its:     General Partner

March ____, 1998                   By:

                                   Its:

                                   Address: 1428 Fifteenth Street
                                            Denver, CO   80202


                            SAUGATUCK CAPITAL COMPANY
                            LIMITED PARTNERSHIP III

                                    By:      Greyrock Partners

                                    Its:     General Partner
March ____, 1998                  
                                   Address:  One Canterbury Green
                                             Stamford, CT 06901


                             PRIMUS CAPITAL FUND III
                             LIMITED PARTNERSHIP

                                       By:      Primus Venture Partners III
                                                Limited Partnership

                                       Its:     General Partner

                                       By:      Primus Venture Partners, Inc.

                                       Its:     General Partner

March ____, 1998            
                                       Address: 5900 Landerbrook Drive
                                               Suite 200
                                               Cleveland, OH 44124


                                       PNC CAPITAL CORP.

March ____, 1998                        By:

                                        Its:

                                       Address: One PNC Plaza, 19th Floor
                                                249 5th Ave & Wood Street
                                                Pittsburgh, PA   15222


                                      DAVID M. ELLIS

March ____, 1998                      By:

                                      Address: 22 Arden Place
                                      Short Hills, NJ 07078

                                     PETER J. BICHE

March ____, 1998                      By:

                                      Address: 5 Deepwater Court
                                               Edgewater, MD 21037


                                     HOFFMAN INVESTMENT COMPANY

March ____, 1998                      By:

                                      Address: Attn: Bette Hoffman
                                               1464 Hunter Road
                                               Rydal, PA 19046



<PAGE>



                                      K. MITCHELL POSNER

March ____, 1998                      By:

                                      Address: 7 Druim Moir Ct.
                                               Philadelphia, PA 19116


                                      EDWARD BEALE PUTNAM


March ____, 1998                      By:

                                      Address: 8201 St. Martins Lane
                                               Philadelphia, PA 15243


                                      KATHRYN PUTNAM



March ____, 1998                      By:

                                      Address: 850 Center Way
                                               Norcross, GA 30071

                                      MICHAEL J. DAVIES

March ____, 1998                      By:

                                      Address: 15925 Old York Road
                                               Monkton, MD 21111


                                      SETH J. LEHR

March ____, 1998                      By:

                                       Address: 1637 Paper Mill Road
                                                Meadowbrook , PA 19046


                                       ADVANCED TECHNOLOGY
                                       DEVELOPMENT FUND II

March ____, 1998                       By:

                                       Its:

                                       Address: 1000 Abernathy Road
                                                Suite 1420
                                                Atlanta, GA 30328


                                       RICHARD H. STEWART

March ____, 1998

                                       Address: 77 E. Crossville Road
                                                Suite 310
                                                Roswell, GA 30075


                                      FISHER FINANCIAL CORP.

March ____, 1998                      By:

                                      Its:

                                      Address: 1355 Peachtree Street
                                               Suite 1700
                                               Atlanta, GA 30309


                                       DIGITAL COMMUNICATIONS

March ____, 1998                       By:

                                       Its:

                                       Address: 319 Peachtree Parkway
                                                Peachtree City, GA 30269


                                       IDA AKERS MORRIS TRUST

March ____, 1998                       By:

                                       Its:

                                       Address: 1000 Brickell Avenue
                                                Suite 1200
                                                Miami, FL 33131


                                       TRUST B. UNDER AGREEMENT DATED
                                       12/31/76 WITH I. WALTER FISHER

March ____, 1998                       By:

                                       Its:
 
                                       Address: 1355 Peachtree Street
                                               Suite 1725
                                               Atlanta, GA 30309

                                       STEVEN E. FOX

March ____, 1998                      ____________________________________

                                      Address: 2700 International Tower
                                               Peachtree Center
                                               229 Peachtree Street
                                               Atlanta, GA   30303


                                       STEPHEN R. LEEDS

March ____, 1998                       ____________________________________

                                       Address: 2700 International Tower
                                                Peachtree Center
                                                229 Peachtree Street
                                                Atlanta, GA   30303


                                        HUNTER R. HUGHES

March ____, 1998                        ____________________________________

                                        Address: 2700 International Tower
                                                Peachtree Center
                                                229 Peachtree Street
                                                Atlanta, GA   30303


                                        MICHAEL ROSENZWEIG

March ____, 1998                        ____________________________________

                                        Address: 2700 International Tower
                                                 Peachtree Center
                                                 229 Peachtree Street
                                                 Atlanta, GA   30303


                                        DAN F. LANEY

March ____, 1998                        ____________________________________

                                        Address: 2700 International Tower
                                                 Peachtree Center
                                                 229 Peachtree Street
                                                 Atlanta, GA   30303


                                        RICHARD H. SINKFIELD

March ____, 1998                        ____________________________________

                                        Address: 2700 International Tower
                                                 Peachtree Center
                                                 229 Peachtree Street
                                                 Atlanta, GA   30303

                                                     SAMUEL L. WORNOM, III

March ____, 1998                        ____________________________________

                                        Address: 318 C Court Square
                                                 Sanford, NC 27330


                                        SANDRA L. WORNOM

March ____, 1998                        ____________________________________

                                        Address: 318 C Court Square
                                                 Sanford, NC 27330


                                        FRANK E. PROCTOR

March ____, 1998                         ____________________________________

                                         Address: 345 E. 57th Street
                                                  Apt. 15B
                                                  New York, NY   10022


                                       LLOYD M. SMITH

March ____, 1998                       ____________________________________

                                       Address: 14270 Phillips Circle
                                                Alpharetta, GA 30201


                                       ELIZABETH G. SMITH

March ____, 1998                     ____________________________________

                                      Address: 14270 Phillips Circle
                                               Alpharetta, GA 30201


                                    RTM, INC.

March ____, 1998                    By:

                                    Its:

                                    Address: 5995 Barfield Road
                                             Atlanta, GA 30328


                                    DOUGLAS N. BENHAM

March ____, 1998                    ____________________________________

                                    Address: 4 Lullwater Estates Road
                                             Atlanta, GA   30307


                                     BERTIL D. NORDIN

March ____, 1998                    ____________________________________

                                    Address: 14 Ball Creek Way
                                             Dunwoody, GA 30350
       

                                     MARK H. DUNAWAY

March ____, 1998                    ____________________________________

                                    Address: 850 Center Way
                                             Norcross, GA 30071


                                     MARCIA M. DUNAWAY

March ____, 1998                     ___________________________________

                                     Address: 850 Center Way
                                              Norcross, GA 30071




<PAGE>

                                     MICHAEL J. SANER

March ____, 1998                     ____________________________________

                                     Address: 850 Center Way
                                              Norcross, GA 30071


                                     SANER COMMUNICATIONS, INC.

March ____, 1998                     By:

                                     Its:

                                     Address: 850 Center Way
                                              Norcross, GA 30071


                                     EUGENE H. KREEFT

March ____, 1998                     ____________________________________

                                     Address: 850 Center Way
                                              Norcross, GA 30071


                                      BILL G. HAMPTON

March ____, 1998                      ____________________________________

                                      Address: 3100 Briarcliff Road, #470
                                               Atlanta, GA 30329


                                      JOHN P. BUTORAC

March ____, 1998                      ___________________________________

                                      Address: 3306 Cove Circle
                                               Stockton, CA 95204


                                      AZURE LIMITED PARTNERSHIP I

March ____, 1998                      By:

                                      Its:

                                      Address: 13 Eagles Nest Drive
                                               Lancaster, WA 98257
 

                                      3-2-1 INVESTMENT COMPANY

March ____, 1998                      By:

                                      Its:

                                      Address: 505 Madison Street, #220
                                               Seattle, WA   98104

                                      THOMAS L. WINDLER

March ____, 1998                     ____________________________________

                                     Address: 5 Concourse Parkway
                                              Suite 3000
                                              Atlanta, GA 30328


                                     TRANSIT COMMUNICATIONS,
                                     U.S.A., L.P.

March ____, 1998                     By:

                                     Its:

                                     Address: 88 E. Crossville Road
                                              Suite 310
                                              Roswell, GA 30075

                                                      *   *   *




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