E SPIRE COMMUNICATIONS INC
S-8, 1998-07-02
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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<PAGE>   1

             As filed with the Securities and Exchange Commission
                               on July 2, 1998

                                                    Registration No. 

- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-8
                             REGISTRATION STATEMENT

                                      UNDER
                           THE SECURITIES ACT OF 1933

                          E.SPIRE COMMUNICATIONS, INC.
             (Exact name of registrant as specified in its charter)

                 DELAWARE                              52-1947746
          (State or other juris-                    (I.R.S. Employer
         diction of incorporation                  Identification No.)
             or organization)

                    133 National Business Parkway, Suite 200
                       Annapolis Junction, Maryland 20701
                                 (301) 361-4200
               (Address of Principal Executive Offices) (Zip Code)

                       1994 Stock Option Plan, as amended
                            (Full title of the plan)

                              Riley M. Murphy, Esq.
                          e.spire Communications, Inc.
                    133 National Business Parkway, Suite 200
                       Annapolis Junction, Maryland 20701
                                 (301) 361-4215
               (Name and address of agent for service of process)

                                   copies to:

                             Kevin T. Collins, Esq.
                              Dorsey & Whitney LLP
                                 250 Park Avenue
                            New York, New York 10177
                                 (212) 415-9200
<PAGE>   2

                         CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
================================================================================
                      Amount of     Proposed        Proposed
Title of Each Class   Shares to      Maximum        Aggregate      Amount of
of Securities to be      be      Offering Price  Offering Price  Registration
     Registered      Registered   Per Share (1)        (2)            Fee
- --------------------------------------------------------------------------------
<S>                   <C>           <C>           <C>             <C>       
Common Stock $.01
par value per
Share......           6,000,000     $19.50        $117,000,000    $34,515.00
================================================================================
</TABLE>

      (1) This is an average price determined by dividing the proposed
          Aggregate Offering Price by the Amount of Shares to be Registered.

      (2) Estimated solely for the purpose of calculating the registration fee
          in accordance with Rule 457(c) of the Securities Act of 1933, as
          amended (the "Act") based upon the average of the bid and ask price
          for the Common Stock, par value $.01 (the "Common Stock") as
          reported by the National Association of Securities Dealers Automated
          Quotation System on June 26, 1998.
<PAGE>   3

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Certain Documents by Reference.

            The following documents previously filed with the SEC (File No.
0-25314) are hereby incorporated by reference into this Prospectus:

      (i) the Company's Annual Report on Form 10-KSB for the fiscal year ended
      December 31, 1997;

      (ii) the Company's Quarterly Report on Form 10-QSB for the quarterly
      period ended March 31, 1998;

      (iii) the Company's Current Reports on Form 8-K, dated January 8, 1998,
      January 20, 1998, January 26, 1998, January 28, 1998, February 3, 1998,
      March 17, 1998 and April 14, 1998; and

      (iv) the description of the Company's Common Stock contained in its
      registration statement on Form 8-A filed with the SEC on December 23,
      1994, including any amendments or reports filed for the purpose of
      updating such description.

All documents subsequently filed by the Company pursuant to Section 13(a),
13(c), 14 or 15(d) of the Exchange Act prior to the termination of the Offering
shall be deemed to be incorporated by reference herein and shall be part hereof
from the date of filing thereof.

Item 4. Description of Securities.

      Not Applicable.

Item 5. Interests of Named Experts and Counsel.

      Not Applicable.

Item 6. Indemnification of Officers and Directors.

      The Third Amended and Restated Certificate of Incorporation provides that
a director of the Company will not be personally liable for monetary damages to
the Company or its stockholders for breach of fiduciary duty as a director,
except for liability, (i) for any breach of the director's duty of loyalty to
the Company or its stockholders, (ii) for acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law, (iii) for
unlawful payments of dividends or unlawful stock repurchases or redemption as
provided in Section 


                                      II-1
<PAGE>   4

174 of the Delaware General Corporation Law ("DGCL") or (iv) for any transaction
from which the director derived an improper personal benefit.

      The Third Amended and Restated Certificate of Incorporation and the
Amended and Restated By-laws further provide that directors and officers of the
Company (as well as agents and employees of the Company at the discretion of the
Board) shall, to the fullest extent authorized by the DGCL or any other
applicable laws then in effect, be indemnified against liabilities arising from
their service as directors and officers. The Company has entered into
indemnification agreements with each of its executive officers and directors to
reimburse them for certain liabilities incurred in connection with the
performance of their fiduciary duties.

      Section 145 of the DGCL empowers a corporation to indemnify any person who
was or is a party or is threatened to be made a party to any threatened, pending
or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative (other than an action by or in the right of the corporation) by
reason of the fact that he is or was a director, officer, employee or agent of
the corporation or is or was serving at the request of the corporation as a
director, officer, employee or agent of another corporation or other enterprise,
against expenses (including attorneys' fees), judgments, fines and amounts paid
in settlement actually and reasonably incurred by him in connection with such
action, suit or proceeding if he acted in good faith and in a manner he
reasonably believed to be in, or not opposed to, the best interests of the
corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his conduct was unlawful.

      Section 145 also empowers a corporation to indemnify any person who was or
is a party or is threatened to be made a party to any threatened, pending or
completed action or suit by or in the right of the corporation to procure a
judgment in its favor by reason of the fact that such person acted in any of the
capacities set forth above, against expenses (including attorneys' fees)
actually and reasonably incurred by him in connection with the defense or
settlement of such action or suit if he acted under similar standards, except
that no indemnification may be made in respect of any claim, issue or matter as
to which such person is fairly and reasonably entitled to indemnity for such
expenses which the Delaware Court of Chancery or such other court shall deem
proper.

      Section 145 further provides that to the extent a director, officer,
employee or agent of a corporation has been successful in the defense of any
action, suit or proceeding referred to above or in the defense of any claim,
issue or matter therein, he shall be indemnified against expenses (including
attorneys' fees) actually and reasonably incurred by him in connection
therewith, that indemnification provided for by Section 145 shall not be deemed
exclusive of any other rights to which the indemnified party may be entitled;
and that the corporation is empowered to purchase and maintain insurance on
behalf of any person who is or was a director, officer, employee or agent of the
corporation against any liability asserted against him in any such capacity or
arising out of his status as such, whether or not the corporation would have the
power to indemnify him against such liability under Section 145.


                                      II-2
<PAGE>   5

      Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers and controlling persons of the
Company pursuant to the foregoing provisions, or otherwise, the Company has been
advised that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Securities Act and
is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Company of expenses
incurred or paid by a director, officer or controlling person of the Company in
the successful defense of any action, suit or proceeding) is asserted by such
director, officer, or controlling person in connection with the securities being
registered, the Company will, unless in the opinion of counsel the matter has
been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.


                                      II-3
<PAGE>   6

Item 7. Exemption from Registration Claimed.

      Not applicable.

Item 8. Exhibits.

            The following are filed as exhibits or incorporated by reference
into this Registration Statement:

                                                                  Exhibit No. or
Exhibit                                                           Incorporation
Number                Description                                 by Reference
- ------                -----------                                 ------------

 4.1      Third Amended and Restated Certificate of
          Incorporation                                              E-1

 5.1      Opinion of Dorsey & Whitney LLP                            E-2

23.1      Consent of Dorsey & Whitney LLP
          (contained in opinion filed as Exhibit 5.1)

23.2      Consent of KPMG Peat Marwick LLP                           E-3

24.1      Power of Attorney                                            *

* Powers of attorney are contained in signatures.


                                      II-4
<PAGE>   7

Item 9. Undertakings.

      (a) The undersigned Registrant hereby undertakes:

            (1) To file, during any period in which offers or sales are being
            made, a post-effective amendment to the Registration Statement:

            (i) To include any prospectus required by section 10(a)(3) of the
      Securities Act of 1933;

            (ii) To reflect in the Prospectus any facts or events arising after
      the effective date of the Registration Statement (or the most recent
      post-effective amendment thereof) which, individually or in the aggregate,
      represent a fundamental change in the information set forth in this
      Registration Statement; notwithstanding the foregoing, any increase or
      decrease in volume of securities offered (if the total dollar value of
      securities offered would not exceed that which was registered) and any
      deviation from the low or high end of the estimated maximum offering range
      may be reflected in the form of prospectus filed with the Commission
      pursuant to Rule 424(b) if, in the aggregate, the changes in volume and
      price represent no more than a 20% change in the maximum aggregate
      offering price set forth in the "Calculation of Registration Fee" table in
      the effective registration statement;

            (iii) To include any material information with respect to the plan
      of distribution not previously disclosed in this Registration Statement or
      any material change to such information in this Registration Statement;
      provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply
      if the Registration Statement is on Form S-8, and the information required
      to be included in a post-effective amendment by those paragraphs is
      contained in periodic reports filed by the Company pursuant to section 13
      or section 15(d) of the Securities Exchange Act of 1934 that are
      incorporated by reference in the Registration Statement.

      (2) That, for the purpose of determining any liability under the
      Securities Act of 1933, each such post-effective amendment shall be deemed
      to be a new registration statement relating to the securities offered
      therein, and the offering of such securities at that time shall be deemed
      to be the initial bona fide offering thereof.

      (3) To remove from registration by means of a post-effective amendment any
      of the securities being registered which remain unsold at the termination
      of the offering.

      (b) That for purposes of determining any liability under the Securities
Act of 1933, each filing of the Company's annual report pursuant to Section
13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered herein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.


                                      II-5
<PAGE>   8

      (c) That, insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Company pursuant to the foregoing provisions, or otherwise, the
Company has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Securities Act of 1933 and is, therefore, unenforceable. In the event that a
claim for indemnification against such liabilities (other than the payment by
the Company of expenses incurred or paid by a director, officer or controlling
person of the Company in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Company will, unless in the
opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Securities
Act of 1933 and will be governed by the final adjudication of such issue.


                                      II-6
<PAGE>   9

                                   SIGNATURES

            Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements of filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Annapolis Junction, State of Maryland, on June 30,
1998.

                                          E.SPIRE COMMUNICATIONS, INC.
                                          (Registrant)


                                          By: /s/ Jack E. Reich
                                              -----------------------------

                                          Jack E. Reich, President and Chief
                                          Executive Officer

                                POWER OF ATTORNEY

            KNOW ALL MEN BY THESE PRESENTS, that each person whose signature
appears below hereby constitutes and appoints Jack E. Reich and David L. Piazza
as true and lawful attorneys-in-fact and agents, each acting alone, with full
powers of substitution and resubstitution, for him and in his name, place and
stead, in any and all capacities, to sign any and all amendments to this
Registration Statement and to file the same, with all exhibits thereto, and all
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done, in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, each acting alone, or his
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
<PAGE>   10

            Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.


   /s/  Anthony J. Pompliano        Chairman of the
- -------------------------------     Board of Directors         June 30, 1998
Anthony J. Pompliano             


   /s/  Jack E. Reich               President and Chief        June 30, 1998
- -------------------------------     Executive Officer,           
Jack E. Reich                       (Principal Executive Officer)
                                     and Director                


   /s/ David L. Piazza              Chief Financial Officer    June 30, 1998
- -------------------------------     (Principal Accounting
David L. Piazza                     Officer)             


   /s/ George M. Middlemas          Director                   June 30, 1998
- -------------------------------
George M. Middlemas


   /s/ Edwin M. Banks               Director                   June 30, 1998
- -------------------------------
Edwin M. Banks


   /s/ Christopher L. Rafferty      Director                   June 30, 1998
- -------------------------------
Christopher L. Rafferty


   /s/ Benjamin P. Giess            Director                   June 30, 1998
- -------------------------------
Benjamin P. Giess


   /s/ Olivier L. Trouveroy         Director                   June 30, 1998
- -------------------------------
Olivier L. Trouveroy


   /s/ Peter C. Bentz               Director                   June 30, 1998
- -------------------------------
Peter C. Bentz

<PAGE>   1

                                   Exhibit 4.1

             THIRD AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

                                       OF

                          E.SPIRE COMMUNICATIONS, INC.

      --------------------------------------------------------------------
                     Pursuant to Sections 242 and 245 of the
                General Corporation Law of the State of Delaware
      --------------------------------------------------------------------

            Pursuant to the provisions of Sections 242 and 245 of the General
Corporation Law of the State of Delaware (the "DGCL"), the undersigned hereby
certifies as follows:

            FIRST: That the name of the Corporation is e.spire Communications,
Inc.; that this Corporation was originally incorporated on August 5, 1994 under
the name of "ACSI Acquisition Corp." pursuant to the DGCL; that the Corporation
changed its name to "American Communications Services, Inc." pursuant to the
Certificate of Amendment of Certificate of Incorporation of ACSI Acquisition
Corp. filed on September 29, 1994; and that the Corporation changed its name to
"e.spire Communications, Inc." pursuant to the Certificate of Ownership and
Merger filed on April 13, 1998.

            SECOND: That the Board of Directors (the "Board") of the Corporation
by unanimous written consent of its members, dated March 19, 1998, adopted
resolutions proposing to amend the Certificate of Incorporation of the
Corporation in the manner reflected herein (the "Amendments"), declaring said
Amendments to be advisable and in the best interests of this Corporation and its
stockholders, and pursuant to DGCL Section 242 directing that the Amendments be
considered at the annual meeting of stockholders held on May 13, 1998 (the
"Annual Meeting").

            THIRD: That in accordance with the provisions of Sections 242 and
245 of the DGCL, on May 13, 1998, said Amendments were duly adopted by a vote of
the holders of at least a majority of the shares of Common Stock of the
Corporation outstanding on March 23, 1998, the record date for stockholders
entitled to vote at the Annual Meeting determined by the Board of Directors.

            FOURTH: That pursuant to the foregoing, this Third Amended and
Restated Certificate of Incorporation restates and integrates and further amends
the Certificate of Incorporation by incorporating said Amendments.

            FIFTH: The text of the Certificate of Incorporation as amended or
supplemented heretofore is further amended to read as herein set forth in full:

                                Article I - Name

<PAGE>   2

      1. The name of the Corporation is e.spire Communications, Inc.

                          Article II - Registered Agent

      2. The address of its registered office in the State of Delaware is
Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County
of New Castle. The name of its registered agent at such address is The
Corporation Trust Company.

                              Article III - Purpose

      3. The nature of the business or purposes to be conducted or promoted is
to engage in any lawful act or activity for which corporations may be organized
under the DGCL.

                           Article IV - Capitalization

      4. The total number of shares of capital stock which the Corporation shall
have authority to issue is 128,000,000.

      4.1 Of the authorized shares, 125,000,000 shares shall be common stock
(the "Common Stock") with a par value of $.01 per share.

      4.2 Of the authorized shares, 3,000,000 shall be shares of preferred stock
(the "Preferred Stock" or "Preferred Shares") with a par value of $1.00 per
share. The designations of the Preferred Stock and the powers, preferences,
qualifications, limitations or restrictions, and relative rights thereof shall
be as follows:

            a. The Board is expressly authorized at any time and from time to
time to provide for the issuance of the Preferred Stock in one or more series,
with such voting powers and with such designations, preferences and relative,
participating, option or other special rights and qualifications, limitations or
restrictions thereof as shall be expressed in the resolution or resolutions
providing for the issue thereof adopted by the Board and as are not expressed in
this Certificate of Incorporation or any amendment hereto, including (but
without limiting the generality of the foregoing) the following:

                  (1) the designation of such series;

                  (2) the dividend rate of such series, the conditions and dates
upon which such dividends shall be payable, the preference or relation which
such dividends shall bear to the dividends payable on any other class or classes
or on any other series of any class or classes of capital stock of the
Corporation, and whether such dividends shall be cumulative or noncumulative;

                  (3) whether the shares of such series may be redeemed by the
Corporation, and if so, the times, prices and other terms and conditions of such
redemption;

<PAGE>   3

                  (4) the terms and amount of any sinking fund provided for the
purchase or redemption of the shares of such series;

                  (5) whether the shares of such series shall be convertible
into or exchangeable for shares of any other class or classes or of any other
series of any class or classes of capital stock of the Corporation, and, if the
provision be made for conversion or exchange, the times, prices, rates,
adjustments and other terms and condition of such conversion or exchange.

                  (6) the restrictions and conditions, if any, upon the issue or
reissue of any additional Preferred Shares ranking on a parity with or prior to
such shares as to dividends or upon dissolution; and

                  (7) the rights of holders of the shares of such series upon
the liquidation or the distribution of assets of the Corporation, which rights
may be different in the case of a voluntary liquidation than in the case of an
involuntary liquidation.

            b. Except as otherwise required by law and except for such voting
powers with respect to the election of directors or other matters as may be
stated in the resolutions of the Board creating any series of Preferred Shares,
the holders of any such series shall have not voting power whatsoever.

            c. Pursuant to the authority conferred upon the Board by this
Certificate of Incorporation, as amended, and pursuant to the provisions of
Section 151 of the General Corporation Law of the State of Delaware, the Board,
by unanimous written consent dated July 2, 1997, duly approved and adopted a
resolution providing for the creation, authorization and issuance of 14.75%
Redeemable Preferred Stock due 2008, par value $1.00 per share, with a stated
value of $1,000 per share, pursuant to the Certificate of Designation of the
Powers, Preferences and Relative, Participating, Optional and Other Special
Rights of 14.75% Redeemable Preferred Stock Due 2008 and Qualifications,
Limitations and Restrictions Thereof, dated July 8, 1997 (the "14.75%
Certificate of Designation"), attached hereto as Exhibit A and incorporated
herein by reference and made a part hereof.

            d. Pursuant to the authority conferred upon the Board by this
Certificate of Incorporation, as amended, and pursuant to the provisions of
Section 151 of the General Corporation Law of the State of Delaware, the Board,
by unanimous written consent dated July 9, 1997, duly approved and adopted a
resolution providing for certain amendments to the 14.75% Certificate of
Designation, as set forth in Exhibit B attached hereto and incorporated herein
by reference and made a part hereof.

            e. Pursuant to the authority conferred upon the Board by this
Certificate of Incorporation, as amended, and pursuant to the provisions of
Section 151 of the General Corporation Law of the State of Delaware, the Board,
by unanimous written consent dated October 15, 1997, duly approved and adopted a
resolution providing for the designation, creation, authorization and issuance
of 

<PAGE>   4

12.75% Series A Junior Redeemable Preferred Stock due 2009 and 12.75% Series B
Junior Redeemable Preferred Stock due 2009, par value $1.00 per share, with a
stated value of $1,000 per share, pursuant to the Certificate of Designation of
the Powers, Preferences and Relative, Participating, Optional and Other Special
Rights of Preferred Stock and Qualifications, Limitations and Restrictions
Thereof, dated October 15, 1997, attached hereto as Exhibit C and incorporated
herein by reference and made a part hereof.

      4.3 Each share of common stock shall be entitled to one vote, either in
person or by proxy, at all stockholder meetings.

      4.4 Cumulative voting with respect to the shares of Common Stock of the
Corporation shall not be allowed in the election of directors.

      4.5 All outstanding shares of common stock shall share equally in
dividends and upon liquidation subject to the rights of any Preferred Shares.
Dividends are payable at the discretion of the Board at such times and in such
amounts as it deems advisable, subject to the rights of any Preferred Shares and
the provisions of the DGCL.

                              Article V - Duration

      5. The Corporation is to have perpetual existence.

                      Article VI - Limitation of Liability

      6. Limits on Director Liability. Directors of the Corporation shall have
no personal liability to the Corporation or its stockholders for monetary
damages for breach of a fiduciary duty as a director; provided that nothing
contained in this Article VI shall eliminate or limit the liability of a
director (i) for any breach of a director's duty of loyalty to the Corporation
or its stockholders, (ii) for acts or omissions not in good faith or which
involve misconduct or knowing violations of the law, (iii) under Section 174 of
the DGCL, or (iv) for any transaction from which a director derived an improper
personal benefit. If the DGCL is amended to authorize corporate action further
eliminating or limiting the personal liability of directors, then by virtue of
this Article VI the liability of a director of the Corporation shall be
eliminated or limited to the fullest extent permitted by the DGCL, as so
amended.

      6.1 Indemnification. The Corporation shall indemnify, in accordance with
the By-laws, to the fullest extent permitted from time to time by the DGCL or
any other applicable laws as presently or hereafter in effect, any person who
was or is a party or is threatened to be made a party to any threatened, pending
or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative, including, without limitation, an action by or in the right of
the Corporation, by reason of his acting as a director or officer of the
Corporation (and the Corporation, in the discretion of the Board, may so
indemnify a person by reason of the fact that he is or was an employee or agent
of the Corporation or is or was serving at the request of the Corporation in any
other capacity for or on behalf of the Corporation) against any liability or
expense actually and reasonably incurred by such person in 

<PAGE>   5

respect thereof; provided, however, that the Corporation shall be required to
indemnify an officer or director in connection with an action, suit or
proceeding (or part thereof) initiated by such person only if (i) such action,
suit or proceeding (or part thereof) was authorized by the Board or (ii) the
indemnification does not relate to any liability arising under Section 16(b) of
the Securities Exchange Act of 1934, as amended, or any of the rules or
regulations promulgated thereunder. Such indemnification is not exclusive of any
other right to indemnification provided by law or otherwise. The right to
indemnification conferred by this Section 6.1 shall be deemed to be a contract
between the Corporation and each person referred to herein.

            If a claim under Section 6.1 of this Article VI is not paid in full
by the Corporation within 30 days of the Corporation's receipt of a written
request from a director or officer, such director or officer may thereafter
bring suit against the Corporation to recover the unpaid amount of the claim
and, if successful in whole or in part, the claimant shall be entitled to be
paid also the expense of prosecuting such claim. It shall be a defense to any
such action (other than an action brought to enforce a claim for expenses
incurred in defending any proceeding in advance of its final disposition where
any undertaking required by the By-laws has been tendered to the Corporation)
that the Claimant has not met the standards of conduct which make it permissible
under the DGCL and Section 6.1 of this Article VI for the Corporation to
indemnify the claimant for the amount claimed, but the burden of proving such
defense shall be on the Corporation. Neither the failure of the Corporation
(including its Board, legal counsel, or its stockholders) to have made a
determination prior to the commencement of such action that indemnification of
the claimant is proper in the circumstances because he or she has met the
applicable standard of conduct set forth in the DGCL, nor an actual
determination by the Corporation (including its Board, legal counsel, or its
stockholders) that the claimant has not met such applicable standard of conduct,
shall be a defense to the action or create a presumption that the claimant has
not met the applicable standard of conduct.

            Indemnification shall include payment to directors and officers by
the Corporation of expenses in defending an action or proceeding in advance of
the final disposition of such action or proceeding upon receipt of an
undertaking by the person indemnified to repay such payment if it is ultimately
determined that such person is not entitled to indemnification under this
Article VI, which undertaking may be accepted without reference to the financial
ability of such person to make such repayment.

            The right to indemnification and the payment of expenses incurred in
defending a proceeding in advance of its final disposition conferred in this
Article VI shall not be exclusive of any other right which any person may have
or hereafter acquire under any statute, provision of this Certificate of
Incorporation, by-law, agreement, contract, vote of stockholders or
disinterested directors, or otherwise.

      6.2 Additional Indemnification. The Corporation may, by action of its
Board, provide additional indemnification to such of the directors, officers,
employees and agents of the Corporation to such extent and to such effect as the
Board shall determine to be appropriate and authorized by Delaware Law.

<PAGE>   6

      6.3 Insurance. The Corporation may purchase and maintain insurance on
behalf of any person who is or was a director or officer of the Corporation, or
is or was serving at the request of the Corporation as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise against any liability asserted against him and incurred by him
in any such capacity, or arising out of his status as such, whether or not the
Corporation would have the power to indemnify him against such liability under
the provisions of this Article VI, the DGCL, or otherwise.

      6.4 Effect of Amendments. Neither the amendment, change, alteration nor
repeal of this Article VI, nor the adoption of any provision of this Certificate
of Incorporation or the By-Laws, nor, to the fullest extent permitted by
Delaware Law, any modification of law, shall eliminate or reduce the effect of
this Article VI or the rights or any protections afforded under this Article VI
in respect of any acts or omissions occurring prior to such amendment, repeal,
adoption or modification.

      6.5 Certain Definitions. For purposes of this Article VI, references to
"the Corporation" shall include, in addition to the resulting corporation, any
constituent corporation (including any constituent of a constituent) absorbed in
a consolidation or merger which, if its separate existence had continued, would
have had power and authority to indemnify its directors or officers, so that any
person who is or was a director or officer of such constituent corporation, or
is or was a director or officer of such constituent corporation serving at the
request of such constituent corporation as a director or officer of another
corporation, partnership, joint venture, trust, employee benefit plan or other
enterprise, shall stand in the same position under the provisions of this
Article VI with respect to the resulting or surviving corporation as such person
would have with respect to such constituent corporation if its separate
existence had continued. For purposes of this Article VI, references to "serving
at the request of the Corporation" shall include any service as a director or
officer of the Corporation which imposes duties on, or involves services by,
such director or officer with respect to an employee benefit plan, its
participants or beneficiaries; and a person who acted in good faith and in a
manner such person reasonably believed to be in the interest of the participants
and beneficiaries of an employee benefit plan shall be deemed to have acted in a
manner "not opposed to the best interests of the Corporation."

                             Article VII - Amendment

      7. The Corporation reserves the right to amend, alter, change or repeal
any provision contained in this Certificate of Incorporation in the manner now
or hereafter prescribed by law, and all rights and powers conferred herein on
stockholders, directors and officers are subject to this reserved power. Except
as otherwise provided in the Certificate of Incorporation, the By-laws may be
amended, repealed or adopted by the Board of Directors or by vote of the
stockholders at the time entitled to vote in the election of any directors.

<PAGE>   7

      IN WITNESS WHEREOF, e.spire Communications, Inc. has caused this Third
Amended and Restated Certificate of Incorporation to be duly executed by Riley
M. Murphy, its Executive Vice President and Secretary, this 12th day of June,
1998.

                                   E.SPIRE COMMUNICATIONS, INC.


                                   BY: /s/ Riley M. Murphy
                                       -----------------------------------------
                                       Riley M. Murphy, Executive Vice President
                                       and Secretary
<PAGE>   8

                                    EXHIBIT A

      American Communications Services, Inc. (the "Corporation"), a corporation
organized and existing under the General Corporation Law of the State of
Delaware, does hereby certify that, pursuant to authority conferred upon the
board of directors of the Corporation (the "Board of Directors") by its
Certificate of Incorporation, as amended (hereinafter referred to as the
"Certificate of Incorporation"), and pursuant to the provisions of Section 151
of the General Corporation Law of the State of Delaware, said Board of
Directors, by unanimous written consent dated July 2, 1997, duly approved and
adopted the following resolution (the "Resolution"):

      RESOLVED, that, pursuant to the authority vested in the Board of Directors
by its Certificate of Incorporation, the Board of Directors does hereby create,
authorize and provide for the issuance of 14.75% Redeemable Preferred Stock due
2008, par value $1.00 per share, with a stated value of $1,000.00 per share,
consisting initially of 400,000 shares, having the designations, preferences,
relative, participating, optional and other special rights and the
qualifications, limitations and restrictions thereof that are set forth in the
Certificate of Incorporation and in this Resolution as follows:

      (a) Designation. There is hereby created out of the authorized and
unissued shares of Preferred Stock of the Corporation a class of Preferred Stock
designated as the "14.75% Redeemable Preferred Stock due 2008." The number of
shares constituting such class shall be 400,000, and are referred to as the
"Redeemable Preferred Stock." The liquidation preference of the Redeemable
Preferred Stock shall be $1,000.00 per share (the "Liquidation Preference").

      (b) Rank. The Redeemable Preferred Stock shall, with respect to dividend
rights and rights on liquidation, winding-up and dissolution of the Corporation
(as provided in paragraphs (c)(v), (c)(vi) and (d) below), rank (i) senior to
all classes of common stock of the Corporation and to each other class of
capital stock or series of Preferred Stock of the Corporation established
hereafter by the Board of Directors the terms of which expressly provide that it
ranks junior to the Redeemable Preferred Stock as to dividend rights and rights
on liquidation, winding-up and dissolution of the Corporation (collectively
referred to, together with all classes of common stock of the Corporation, as
"Junior Stock"); (ii) subject to certain conditions, and except as otherwise
provided herein, on a parity with each other class of Preferred Stock of the
Corporation established hereafter by the Board of Directors the terms of which
expressly provide that such class or series will rank on a parity with the
Redeemable Preferred Stock as to dividend rights and rights on liquidation,
winding-up and dissolution (collectively referred to as "Parity 

<PAGE>   9

Stock"); and (iii) subject to certain conditions, junior to each class of
Preferred Stock of the Corporation established after the date hereof by the
Board of Directors the terms of which expressly provide that such class will
rank senior to the Redeemable Preferred Stock as to dividend rights and rights
on liquidation, winding-up and dissolution of the Corporation (collectively
referred to as "Senior Stock").

      (c) Dividends.

            (i) Beginning on the Issue Date, the Holders of the
      outstanding shares of Redeemable Preferred Stock shall be entitled to
      receive, when, as and if declared by the Board of Directors, out of funds
      legally available therefor, distributions in the form of full cumulative
      dividends on each share of Redeemable Preferred Stock, at a rate per annum
      equal to 14.75% (subject to adjustment as provided in paragraph (c)(ii))
      of the Liquidation Preference of the Redeemable Preferred Stock, payable
      quarterly (each such quarterly period being herein called a "Dividend
      Period"). In the event that, after June 30, 2002, dividends on the
      Redeemable Preferred Stock are in arrears and unpaid for four or more
      Dividend Periods following such date (whether or not consecutive), Holders
      of Redeemable Preferred Stock shall be entitled to certain voting rights
      as provided in paragraph (f)(iv) below. All dividends shall be cumulative,
      whether or not earned or declared, on a daily basis from the Issue Date
      and shall be payable quarterly in arrears on each Dividend Payment Date,
      commencing on September 30, 1997, to Holders of record on the March 15,
      June 15, September 15 and December 15 immediately preceding the relevant
      Dividend Payment Date. Notwithstanding anything herein to the contrary,
      any dividends that are in arrears on the Redeemable Preferred Stock shall
      accrue and cumulate dividends thereon from the Dividend Payment Date on
      which such dividend was payable.

      Dividends may be paid, at the Corporation's option, on any Dividend
      Payment Date either in cash or by the issuance of additional shares of
      Redeemable Preferred Stock (and, at the Corporation's option, payment of
      cash in lieu of fractional shares) having an aggregate Liquidation
      Preference (including any fractional shares) equal to the amount of such
      dividends; provided, however, that after June 30, 2002, to the extent and
      for so long as the Corporation is not precluded from paying cash dividends
      on the Redeemable Preferred Stock by the terms of any then outstanding
      indebtedness or any other agreement or instrument to which the Corporation
      is subject, the Corporation shall pay dividends in cash.

            (ii) Within 30 days of the occurrence of a Change of Control,
      Holders of two-thirds of the Redeemable Preferred Stock will designate an
      Independent Financial Advisor to determine, within 20 days of such
      designation, in the opinion 

<PAGE>   10

      of such firm, the appropriate dividend rate that the Redeemable Preferred
      Stock should bear so that, after such reset, the Redeemable Preferred
      Stock would have a market value of 101% of the Liquidation Preference. If,
      for any reason and within 5 days of the designation of an Independent
      Financial Advisor by the Holders, such Independent Financial Advisor is
      unacceptable to the Corporation, the Corporation shall designate a second
      Independent Financial Advisor to determine, within 15 days of such
      designation, in its opinion, such an appropriate reset dividend rate for
      the Redeemable Preferred Stock. In the event that the two Independent
      Financial Advisors cannot agree, within 25 days of the designation of an
      Independent Financial Advisor by the Holders of two-thirds of the
      Redeemable Preferred Stock, on the appropriate reset dividend rate, the
      two Independent Financial Advisors shall, within 10 days of such 25th day,
      designate a third Independent Financial Advisor, which, within 15 days of
      designation, will determine, in its opinion, such an appropriate reset
      rate which is between the two rates selected by the first two Independent
      Financial Advisors; provided, however, that the reset rate shall in no
      event be less than 14.75% per annum or greater than 17.25% per annum. The
      reasonable fees and expenses, including reasonable fees and expenses of
      legal counsel, if any, and customary indemnification, of each of the three
      above-referenced Independent Financial Advisors shall be borne by the
      Corporation. Upon the determination of the reset rate, the Redeemable
      Preferred Stock shall accrue and cumulate dividends at the reset rate as
      of the date of occurrence of the Change of Control.

            (iii) Nothing herein contained shall in any way or under any
      circumstances be construed or deemed to require the Board of Directors to
      declare, or the Corporation to pay or set apart for payment, any dividends
      on shares of the Redeemable Preferred Stock at any time.

            (iv) Dividends on account of arrears for any past Dividend Period
      and dividends in connection with any optional redemption pursuant to
      paragraph (e)(i) may be declared and paid at any time, without reference
      to any regular Dividend Payment Date, to Holders of record on such date,
      not more than forty-five (45) days prior to the payment thereof, as may be
      fixed by the Board of Directors.

            (v) No full dividends may be declared by the Board of Directors or
      paid or funds set apart for the payment of dividends by the Corporation on
      any Parity Stock (except dividends on Parity Stock payable solely in
      additional shares of Parity Stock) for any period unless full cumulative
      dividends shall have been or contemporaneously are declared and paid (or
      are deemed declared and paid) in full or declared and, if payable in cash,
      a sum in cash sufficient 

<PAGE>   11

      for such payment is set apart for such payment on the Redeemable Preferred
      Stock for all Dividend Periods terminating on or prior to the date of
      payment of such full dividends on such Parity Stock. If full dividends are
      not so paid, all dividends declared upon shares of the Redeemable
      Preferred Stock and any other Parity Stock (except dividends on Parity
      Stock payable solely in additional shares of Parity Stock) shall be
      declared pro rata so that the amount of dividends declared per share on
      the Redeemable Preferred Stock and such Parity Stock shall in all cases
      bear to each other the same ratio that accumulated and unpaid dividends
      per share on the Redeemable Preferred Stock and such Parity Stock bear to
      each other.

            (vi)(A) Holders of shares of the Redeemable Preferred Stock shall be
      entitled to receive the dividends provided for in paragraph (c)(i) hereof
      in preference to and in priority over any dividends upon any of the Junior
      Stock (except dividends on Junior Stock payable solely in additional
      shares of Junior Stock).

                  (B) So long as any share of the Redeemable Preferred Stock is
      outstanding, the Corporation shall not declare, pay or set apart for
      payment any dividend on any of the Junior Stock (except dividends on
      Junior Stock payable in Junior Stock) or make any payment on account of,
      or set apart for payment money for a sinking or other similar fund for,
      the purchase, redemption or other retirement of, any of the Junior Stock
      or any warrants, rights, calls or options exercisable for or convertible
      into any of the Junior Stock, whether in cash, obligations or shares of
      the Corporation or other property, and shall not permit any corporation or
      other entity directly or indirectly controlled by the Corporation to
      purchase or redeem any of the Junior Stock or any such warrants, rights,
      calls or options unless full cumulative dividends determined in accordance
      herewith on the Redeemable Preferred Stock have been paid (or are deemed
      paid) in full, other than certain repurchase obligations with respect to
      such warrants, rights, calls or options in existence on the Issue Date.

                  (C) So long as any share of the Redeemable Preferred Stock is
      outstanding, the Corporation shall not make any payment on account of, or
      set apart for payment money for a sinking or other similar fund for, the
      purchase, redemption or other retirement of, any of the Parity Stock or
      any warrants, rights, calls or options exercisable for or convertible into
      any of the Parity Stock and shall not permit any corporation or other
      entity directly or indirectly controlled by the Corporation to purchase or
      redeem any of the Parity Stock or any such warrants, rights, calls or
      options unless full cumulative dividends determined in 

<PAGE>   12

      accordance herewith on the Redeemable Preferred Stock have been paid (or
      are deemed paid) in full.

            (vii) Dividends payable on the Redeemable Preferred Stock for any
      period less than a year shall be computed on the basis of a 360-day year
      of twelve 30-day months. The amount of Additional Dividends (as defined
      below) will be determined consistent with the preceding sentence and by
      multiplying the applicable Additional Dividends by a fraction, the
      numerator of which is the number of days such rate was applicable during
      any Dividend Period and the denominator of which is 360.

            (viii)(A) If (1) the Corporation fails to file a Shelf Registration
      Statement (in the circumstances described below) on or prior to 150 days
      after the Issue Date, (2) the Shelf Registration Statement is not declared
      effective within 225 days after the Issue Date or (3) the Shelf
      Registration Statement is filed and declared effective within 225 days
      after the Issue Date but shall thereafter cease to be effective (at any
      time that the Corporation is obligated to maintain the effectiveness
      thereof) without being succeeded within 90 days by an additional Shelf
      Registration Statement, filed and declared effective, then, in recognition
      that the limited liquidity of the Redeemable Preferred Stock has
      deleteriously affected its value, additional dividends (the "Additional
      Dividends") shall accrue and cumulate on the Redeemable Preferred Stock as
      set forth in paragraphs (B), (C) and (D) below, respectively.

                        (B) If the Shelf Registration Statement is not filed
            within 150 days following the Issue Date, Additional Dividends shall
            accrue and cumulate on the Redeemable Preferred Stock over and above
            the stated dividend rate at a rate of 0.50% per annum.

                        (C) If the Shelf Registration Statement is not declared
            effective within 225 days following the Issue Date, Additional
            Dividends shall accrue and cumulate on the Redeemable Preferred
            Stock over and above the stated dividend rate at a rate of 0.50% per
            annum.

                        (D) If the Shelf Registration Statement has been
            declared effective and ceases to be effective at any time prior to
            the third anniversary of the Issue Date, unless all of the
            Redeemable Preferred Stock registered thereunder has been sold
            thereunder or an additional Shelf Registration Statement has been
            filed and declared effective within 90 days of the date on which the
            Shelf Registration Statement ceases to be effective, then Additional
            Dividends shall accrue and cumulate on the Redeemable Preferred
            Stock over and above the stated dividend rate at a rate of 0.50% per

<PAGE>   13

            annum commencing on the 90th day following the day such Shelf
            Registration Statement ceases to be effective.

                        (E) Notwithstanding paragraphs (A)-(D) of this paragraph
            (c), the Additional Dividends payable hereunder shall not exceed in
            the aggregate 0.50% per annum. In addition (1) upon the filing of
            the Shelf Registration Statement (in the case of paragraph (B)
            above), (2) upon the effectiveness of the Shelf Registration
            Statement (in the case of paragraph (C) above) or (3) upon the
            effectiveness of the Shelf Registration Statement that had ceased to
            remain effective (in the case of paragraph (D) above), the dividend
            rate on the Redeemable Preferred Stock shall revert to the dividend
            rate set forth in paragraph (c)(i) or (c)(ii) hereof, as applicable,
            and Additional Dividends on the Redeemable Preferred Stock shall
            cease to accrue and cumulate or be payable.

            (d) Liquidation Preference.

                  (i) Upon any voluntary or involuntary liquidation, dissolution
            or winding-up of the Corporation, the Holders of shares of
            Redeemable Preferred Stock then outstanding will be entitled to be
            paid, out of the assets of the Corporation available for
            distribution to its stockholders, an amount in cash equal to the
            Liquidation Preference for each share of Redeemable Preferred Stock
            outstanding, plus, without duplication, an amount in cash equal to
            all accumulated and unpaid dividends thereon to the date fixed for
            liquidation, dissolution or winding-up (including an amount equal to
            a prorated dividend for the period from the last Dividend Payment
            Date to the date fixed for liquidation, dissolution or winding-up
            and including an amount equal to the redemption premium that would
            have been payable had the Redeemable Preferred Stock been the
            subject of an optional redemption on such date, but exclusive of any
            amount declared as a dividend pursuant to paragraph (d)(ii) hereof),
            before any payment shall be made or any assets distributed to the
            holders of any of the Junior Stock, including, without limitation,
            common stock of the Corporation. If, upon any voluntary or
            involuntary liquidation, dissolution or winding-up of the
            Corporation, the assets of the Corporation are not sufficient to pay
            in full the liquidation preference payments payable to the holders
            of outstanding shares of the Redeemable Preferred Stock and all
            other Parity Stock, then the holders of all such shares shall share
            equally and ratably in any such distribution of assets in proportion
            to the full liquidation preference to which each is entitled until
            such liquidation preferences are paid in full, and then in
            proportion to 

<PAGE>   14

            their respective amounts of accumulated but unpaid dividends. The
            holders of outstanding shares of Redeemable Preferred Stock and all
            other Parity Stock shall not be entitled to any further
            participation in any distribution of assets of the Corporation after
            payment of the full amount of the liquidation preference, including
            accumulated and unpaid dividends and redemption premium to which
            such holders are entitled.

                  (ii) Immediately prior to making any distribution with respect
            to the Redeemable Preferred Stock in connection with any
            liquidation, dissolution or winding-up of the Corporation, the
            Corporation, by resolution by its Board of Directors, shall, to the
            extent of any funds legally available therefor, declare a dividend
            on the Redeemable Preferred Stock payable prior to the date of any
            such distribution in an amount equal to any accrued and unpaid
            dividends on the Redeemable Preferred Stock as of such date.

                  (iii) For the purposes of this paragraph (d), neither the
            sale, conveyance, exchange or transfer (for cash, shares of stock,
            securities or other consideration) of all or substantially all of
            the property or assets of the Corporation nor the consolidation or
            merger of the Corporation with or into one or more entities shall be
            deemed to be a liquidation, dissolution or winding-up of the
            Corporation.

            (e) Redemption.

                  (i) Optional Redemption. (A) The Corporation may, at the
            option of the Board of Directors, redeem at any time on or after
            January 1, 2003, subject to the legal availability of funds
            therefor, in whole or in part, in the manner provided for in
            paragraph (e)(iii) hereof, any or all of the shares of the
            Redeemable Preferred Stock, at the redemption prices (expressed in
            percentages of an amount equal to the sum of (i) the Liquidation
            Preference and (ii) without duplication, the liquidation preference
            of any accrued and unpaid dividends payable in Redeemable Preferred
            Stock to the Dividend Payment Date immediately prior to the
            Redemption Date) set forth below, plus, without duplication, an
            amount in cash equal to all accrued and unpaid cash dividends to the
            Dividend Payment Date immediately prior to the Redemption Date
            (including an amount in cash equal to a prorated dividend for the
            period from the Dividend Payment Date immediately prior to the
            Redemption Date to the Redemption Date, but exclusive of any amount
            declared as a dividend pursuant 

<PAGE>   15

            to paragraph (e)(iv) hereof (the "Optional Redemption Price")), if
            redeemed during the 12-month period beginning January 1 of each of
            the years set forth below:

<TABLE>
                                                  <S>                   <C>
                                                  2003                  107.375%
                                                  2004                  104.917%
                                                  2005                  102.458%
                                                  2006 and thereafter   100.000%
</TABLE>

                        (B) Notwithstanding the foregoing paragraph (e)(i)(A),
            the Corporation will have the option, on or prior to June 30, 2000,
            to redeem up to 30% of the outstanding Redeemable Preferred Stock at
            a price (the "Equity Redemption Price") of 114.750% (expressed as a
            percentage of an amount equal to the sum of (i) of the Liquidation
            Preference and (ii) without duplication, the liquidation preference
            of any accrued and unpaid dividends payable in Redeemable Preferred
            Stock to the Dividend Payment Date immediately prior to the
            Redemption Date), plus, without duplication, accrued and unpaid cash
            dividends to the Dividend Payment Date immediately prior to the
            Redemption Date (including an amount in cash equal to a prorated
            dividend for the period from the Dividend Payment Date immediately
            prior to the Redemption Date to the Redemption Date, but exclusive
            of any amount declared as a dividend pursuant to paragraph (e)(iv)
            hereof) with the proceeds of (i) one or more Public Equity Offerings
            generating cash proceeds to the Corporation of at least $25 million
            or (ii) the sale of Qualified Capital Stock generating cash proceeds
            to the Corporation of at least $25 million to a corporation which
            has, or whose Parent has, a Total Equity Market Capitalization at
            the time of such sale of at least $1 billion on a consolidated
            basis; provided that Redeemable Preferred Stock equal to at least
            70% of the Redeemable Preferred Stock initially issued remains
            outstanding after any such redemption.

                  (ii) Mandatory Redemption. On June 30, 2008, the Corporation
            shall redeem (subject to the legal availability of funds therefor)
            in the manner provided for in paragraph (e)(iii) hereof, all of the
            shares of the Redeemable Preferred Stock then outstanding at a
            redemption price equal to 100% of the Liquidation Preference per
            share, plus, without duplication, an amount in cash equal to all
            accumulated and unpaid dividends per share to the Redemption Date
            (including the dividend payable on the Redemption Date, but
            exclusive of any amount declared as a dividend pursuant to paragraph
            (e)(iv) hereof) (the "Mandatory Redemption Price").

<PAGE>   16

                  (iii) Procedures for Redemption. (A) At least 30 days and not
            more than 60 days prior to any Redemption Date, the Corporation
            shall send written notice (the "Redemption Notice") by first class
            mail, postage prepaid, to each Holder of record on the record date
            fixed for such redemption of the Redeemable Preferred Stock at such
            Holder's address as it appears on the stock books of the
            Corporation, provided that no failure to give such notice nor any
            deficiency therein shall affect the validity of the procedure for
            the redemption of any shares of Redeemable Preferred Stock to be
            redeemed except as to the Holder or Holders to whom the Corporation
            has failed to give said notice or except as to the Holder or Holders
            whose notice was finally judicially determined by a court of
            competent jurisdiction to be defective. The Redemption Notice shall
            state:

                        (1) whether the redemption is pursuant to paragraph
                  (e)(i)(A), (e)(i)(B), or (e)(ii);

                        (2) the Optional Redemption Price, the Equity Redemption
                  Price or the Mandatory Redemption Price;

                        (3) whether all or (solely with respect to paragraph
                  (e)(1)(A) or (e)(1)(B)) less than all the outstanding shares
                  of the Redeemable Preferred Stock are to be redeemed and the
                  total number of shares of the Redeemable Preferred Stock being
                  redeemed;

                        (4) the Redemption Date;

                        (5) that the Holder is to surrender to the Corporation,
                  at the offices of the Transfer Agent and in the manner and at
                  the price designated, his certificate or certificates
                  representing the shares of Redeemable Preferred Stock to be
                  redeemed; and

                        (6) that dividends on the shares of the Redeemable
                  Preferred Stock to be redeemed shall cease to accumulate on
                  such Redemption Date unless the Corporation defaults in the
                  payment of the Optional Redemption Price, the Equity
                  Redemption Price or the Mandatory Redemption Price, as the
                  case may be.

                        (A) Each Holder of Redeemable Preferred Stock called for
            redemption shall surrender the certificate or certificates
            representing such shares of Redeemable Preferred Stock to the
            Corporation, duly endorsed (or otherwise in proper form for
            transfer, as determined by the Corporation), at the office of the
            Transfer Agent 

<PAGE>   17

            and in the manner designated in the Redemption Notice, and on the
            Redemption Date the full Optional Redemption Price, Mandatory
            Redemption Price or Equity Redemption Price, as the case may be, for
            such shares shall be payable in cash to the Person whose name
            appears on such certificate or certificates as the owner thereof,
            and each surrendered certificate shall be canceled and retired. In
            the event that less than all of the shares represented by any such
            certificate are redeemed, a new certificate shall be issued
            representing the unredeemed shares.

                        (B) On and after the Redemption Date, unless the
            Corporation defaults in the payment in full of the applicable
            redemption price, dividends on the Redeemable Preferred Stock called
            for redemption shall cease to accumulate, and all rights of the
            Holders of such shares shall terminate with respect thereto on the
            date fixed for redemption, other than the right to receive the
            Optional Redemption Price, the Equity Redemption Price or the
            Mandatory Redemption Price, as the case may be, without interest;
            provided, however, that if a Redemption Notice shall have been given
            as provided in paragraph (iii)(A) above and the funds necessary for
            redemption (including an amount in respect of all dividends that
            will accumulate to the Redemption Date) shall have been delivered to
            the Transfer Agent, in trust for the equal and ratable benefit of
            the Holders of the shares to be redeemed, then dividends shall cease
            to accrue and cumulate on the Redemption Date of such shares of
            Redeemable Preferred Stock to be redeemed and, at the close of
            business on the day on which such funds are delivered to the
            Transfer Agent, the Holders of the shares to be redeemed shall cease
            to be stockholders of the Corporation and shall be entitled only to
            receive the Optional Redemption Price, the Equity Redemption Price
            or the Mandatory Redemption Price, as the case may be, for such
            shares without interest.

                        (C) In the event of a redemption pursuant to paragraph
            (e)(i)(A) or (e)(i)(B) hereof of only a portion of the then
            outstanding shares of the Redeemable Preferred Stock, the
            Corporation shall effect such redemption on a pro rata basis
            according to the number of shares held by each Holder of the
            Redeemable Preferred Stock, except that the Corporation may redeem
            such shares held by Holders of fewer than 10 shares (or shares held
            by Holders who would hold less than 10 shares as a result of such
            redemption), as may be determined by the Corporation.

                  (iv) Immediately prior to making any such redemption with
            respect to the Redeemable Preferred 

<PAGE>   18

            Stock, the Corporation, by resolution by its Board of Directors,
            shall, to the extent of any funds legally available therefor,
            declare a dividend on the Redeemable Preferred Stock payable on the
            Redemption Date in an amount equal to any accrued and unpaid
            dividends on the Redeemable Preferred Stock as of such date. If the
            Corporation does not have sufficient funds legally available
            therefor to declare and pay all dividends accrued at the time of
            such redemption, then an amount equal to any remaining accrued and
            unpaid dividends shall, without duplication, be added to the
            Redemption Price of each share of Redeemable Preferred Stock being
            redeemed.

            (f) Voting Rights.

                  (i) The Holders of Redeemable Preferred Stock, except as
            otherwise required under Delaware law or as set forth in paragraphs
            (ii), (iii) and (iv) below, shall not be entitled or permitted to
            vote on any matter required or permitted to be voted upon by the
            stockholders of the Corporation.

                  (ii) (A) So long as any shares of the Redeemable Preferred
            Stock are outstanding, the Corporation shall not authorize any class
            of Senior Stock without the affirmative vote or consent of Holders
            of at least two-thirds of the outstanding shares of Redeemable
            Preferred Stock, voting or consenting, as the case may be, as one
            class, given in person or by proxy, either in writing or by
            resolution adopted at an annual or special meeting.

                        (B) So long as any shares of the Redeemable Preferred
            Stock are outstanding, the Corporation shall not authorize any class
            of Parity Stock (other than (i) any additional shares of Redeemable
            Preferred Stock issued and sold by the Company within 365 days of
            the Issue Date, (ii) any shares of Redeemable Preferred Stock issued
            as dividends (including as Additional Dividends), (iii) any
            preferred stock issued in exchange for the Redeemable Preferred
            Stock or (iv) any Post-Closing Parity Stock) without the affirmative
            vote or consent of Holders of at least two-thirds of the then
            outstanding shares of Redeemable Preferred Stock, voting or
            consenting, as the case may be, as one class, given in person or by
            proxy, either in writing or by resolution adopted at an annual or
            special meeting.

                        (C) So long as any shares of the Redeemable Preferred
            Stock are outstanding, the Corporation shall not amend this
            Certificate of Designation so as to affect the specified rights,
            preferences, privileges or voting rights of the Redeemable Preferred
            Stock without the affirmative vote or consent of Holders of at least

<PAGE>   19

            two-thirds of the issued and outstanding shares of Redeemable
            Preferred Stock, voting or consenting, as the case may be, as one
            class, given in person or by proxy, either in writing or by
            resolution adopted at an annual or special meeting.

                        (D) The Redeemable Preferred Stock and the Post-Closing
            Parity Stock shall vote on all matters as a single class.

                        (E) Except as set forth in paragraphs (f)(ii)(A),
            (f)(ii)(B) and (f)(ii)(C) above, (x) the creation, authorization or
            issuance of any shares of any Junior Stock or (y) the increase or
            decrease in the amount of authorized Capital Stock of the
            Corporation of any class, including any Preferred Stock of the
            Corporation, shall not require the consent of the Holders of the
            Redeemable Preferred Stock and shall not be deemed to affect
            adversely the rights, preferences, privileges or voting rights of
            shares of Redeemable Preferred Stock.

                  (iii) (A) If (1) after June 30, 2002, dividends on the
            Redeemable Preferred Stock are in arrears and unpaid for four or
            more Dividend Periods following such date (whether or not
            consecutive) (a "Dividend Default"); (2) the Corporation fails to
            redeem all of the then outstanding shares of Redeemable Preferred
            Stock on June 30, 2008; or (3) the Corporation fails to pay at the
            final stated maturity (giving effect to any extensions thereof) the
            principal amount of any Indebtedness of the Corporation or any
            Subsidiary of the Corporation, or the final stated maturity of any
            such Indebtedness is accelerated, if the aggregate principal amount
            of such Indebtedness, together with the aggregate principal amount
            of any other such Indebtedness in default for failure to pay
            principal at the final stated maturity (giving effect to any
            extensions thereof) or that has been accelerated, aggregates $10
            million or more at the time of such default, in each case, after a
            30-day period during which such default shall not have been cured or
            such acceleration rescinded, then in the case of any of clauses
            (1)-(3) the number of directors constituting the Board of Directors
            shall be adjusted by the number, if any, necessary to permit the
            Holders of two-thirds of the then outstanding shares of Redeemable
            Preferred Stock, voting as a single class, to elect the lesser of
            two directors and 25% of the number of members constituting the
            Board of Directors. Each such event described in clauses (1), (2)
            and (3) is a "Voting Rights Triggering Event." Holders of two-thirds
            of the issued and outstanding shares of Redeemable Preferred Stock,
            voting as a single class, shall have the exclusive right to elect,
            by two-thirds vote, the lesser of two 

<PAGE>   20

            directors and 25% of the number of members constituting the Board of
            Directors at a meeting therefor called upon occurrence of such
            Voting Rights Triggering Event, and at every subsequent meeting at
            which the terms of office of the directors so elected by the Holders
            of the Redeemable Preferred Stock expire (other than as described in
            (f)(iii)(B) below).

                        (B) The right of the Holders of Redeemable Preferred
            Stock voting as a single class to elect members of the Board of
            Directors as set forth in subparagraph (f)(iii)(A) above shall
            continue until such time as (x) in the event such right arises due
            to a Dividend Default, all accumulated dividends that are in arrears
            on the Redeemable Preferred Stock are paid in full; and (y) in all
            other cases, the failure, breach or default giving rise to such
            Voting Rights Triggering Event is remedied or waived by the Holders
            of at least two-thirds of the shares of Redeemable Preferred Stock
            then outstanding and entitled to vote thereon, at which time (1) the
            special right of the Holders of Redeemable Preferred Stock so to
            vote as a class for the election of directors and (2) the term of
            office of the directors elected by the Holders of the Redeemable
            Preferred Stock shall each terminate. At any time after voting power
            to elect directors shall have become vested and be continuing in the
            Holders of Redeemable Preferred Stock pursuant to paragraph (f)(iii)
            hereof, or if vacancies shall exist in the offices of directors
            elected by the Holders of Redeemable Preferred Stock, a proper
            officer of the Corporation may, and upon the written request of the
            Holders of record of at least 25% of the shares of Redeemable
            Preferred Stock then outstanding addressed to the secretary of the
            Corporation at its principal executive offices shall, call a special
            meeting of the Holders of Redeemable Preferred Stock, for the
            purpose of electing the directors which such Holders are entitled to
            elect. If such meeting shall not be called by a proper officer of
            the Corporation within 20 days after personal service of said
            written request upon the secretary of the Corporation at its
            principal executive offices, or within 20 days after mailing the
            same within the United States by certified mail, return receipt
            requested, addressed to the secretary of the Corporation at its
            principal executive offices, then the Holders of record of at least
            25% of the outstanding shares of Redeemable Preferred Stock may
            designate in writing one of their number to call such meeting at the
            expense of the Corporation, and such meeting may be called by the
            Person so designated upon the notice required for the annual
            meetings of stockholders of the Corporation and shall be held at the
            place designated in such notice. Any Holder of Redeemable Preferred
            Stock so designated shall have, and the Corporation shall provide,
            access to 

<PAGE>   21

            the lists of stockholders to be called pursuant to the provisions
            hereof.

                        (C) At any meeting held for the purpose of electing
            directors at which the Holders of Redeemable Preferred Stock shall
            have the right, voting together as a separate class, to elect
            directors as aforesaid, the presence in person or by proxy of the
            Holders of at least two-thirds of the outstanding shares of
            Redeemable Preferred Stock shall be required to constitute a quorum
            of such Redeemable Preferred Stock.

                        (D) Any vacancy occurring in the office of a director
            elected by the Holders of Redeemable Preferred Stock may be filled
            by the remaining director elected by the Holders of Redeemable
            Preferred Stock unless and until such vacancy shall be filled by the
            Holders of Redeemable Preferred Stock. Holders of two-thirds of the
            Redeemable Preferred Stock, voting separately as a class, may
            remove, with or without cause, any director elected by the Holders
            of Redeemable Preferred Stock or appointed to fill a vacancy
            pursuant to the next preceding sentence. Any director to be elected
            by the Holders of Redeemable Preferred Stock shall agree, prior to
            his election to office, to resign upon any termination of the right
            of the Holders of Redeemable Preferred Stock to vote as a class for
            a director as herein provided, and upon any such termination any
            director then in office elected by the Holders of Redeemable
            Preferred Stock shall forthwith resign.

                  (iv) In any case in which the Holders of Redeemable Preferred
            Stock shall be entitled to vote pursuant to this paragraph (f) or
            pursuant to Delaware law, each Holder of Redeemable Preferred Stock
            entitled to vote with respect to each such matter shall be entitled
            to one vote for each share of Redeemable Preferred Stock held.

            (g) Conversion or Exchange. The Holders of shares of Redeemable
Preferred Stock shall not have any rights hereunder to convert such shares into
or exchange such shares for shares of any other class or classes or of any other
series of any class or classes of Capital Stock of the Corporation.

                  (h) Reissuance of Redeemable Preferred Stock. Shares of
Redeemable Preferred Stock that have been issued and reacquired in any manner,
including shares purchased or redeemed or exchanged, shall (upon compliance with
any applicable provisions of the laws of Delaware) have the status of authorized
but unissued shares of Preferred Stock of the Corporation undesignated as to
series and may be redesignated and reissued as part of any series of Preferred
Stock of the Corporation, provided 

<PAGE>   22

that any issuance or reissuance of such shares as Redeemable Preferred Stock
must be in compliance with the terms hereof.

                  (i) Business Day. If any payment, redemption or exchange shall
be required by the terms hereof to be made on a day that is not a Business Day,
such payment, redemption or exchange shall be made on the immediately succeeding
Business Day.

                  (j) Reports. So long as any shares of Redeemable Preferred
Stock are outstanding, the Corporation will provide to the holders of Redeemable
Preferred Stock and file with the Commission copies of the annual reports and of
the information, documents and other reports that the Corporation would have
been required to file with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act regardless of whether the Corporation is then obligated to file
such reports. For so long as any of the shares of the Redeemable Preferred Stock
are outstanding, the Company will, during any period in which it is not subject
to and in compliance with Section 13 or 15(d) of the Exchange Act, provide to
each Holder and to each prospective purchaser (as designated by such Holder) of
Redeemable Preferred Stock, any information required to be provided by Rule
144A(d)(4) under the Act. 

                  (k) Definitions. As used in this Certificate of Designation,
the following terms shall have the following meanings (with terms defined in the
singular having comparable meanings when used in the plural and vice versa),
unless the context otherwise requires:

            "Additional Dividends" shall have the meaning ascribed to it in
      paragraph (c) hereof.

            "Board of Directors" shall have the meaning ascribed to it in the
      first paragraph of this Resolution.

            "Business Day" means any day except a Saturday, a Sunday, or any day
      on which banking institutions in New York, New York are required or
      authorized by law or other governmental action to be closed.

            "Capital Stock" in any Person means any and all shares, interests,
      participations or other equivalents in the equity interest (however
      designated) in such Person and any rights (other than Indebtedness
      convertible into an equity interest), warrants or options to acquire an
      equity interest in such Person.

            "Change of Control" shall be deemed to occur if (i) the sale,
      conveyance, transfer or lease of all or substantially all the assets of
      the Corporation to any "person" or "group" (within the meaning of Sections
      13(d)(3) and 14(d)(2) of the Exchange Act or any successor provisions to
      either of the foregoing, including any group acting for the purpose of

<PAGE>   23

      acquiring, holding or disposing of securities within the meaning of Rule
      13d-5(b)(i) under the Exchange Act) (other than any Permitted Holder (as
      defined below) or any subsidiary of the Corporation) shall have occurred;
      (ii) any "person" or "group" as aforesaid other than any Permitted Holder,
      becomes the "beneficial owner" (as defined in Rule 13d-3 under the
      Exchange Act) of more than 35% of the total voting power of all classes of
      the voting stock of the Corporation and/or warrants or options to acquire
      such voting stock, calculated on a fully diluted basis, and such voting
      power percentage is greater than or equal to the total voting power
      percentage then beneficially owned by the Permitted Holders in the
      aggregate; or (iii) during any period of two consecutive years,
      individuals who at the beginning of such period constituted the Board of
      Directors (together with any new directors whose election or appointment
      by such board or whose nomination for election by the shareholders of the
      Corporation was approved by a vote of a majority of the directors then
      still in office who were either directors at the beginning of such period
      or whose election or nomination for election was previously so approved)
      cease for any reason to constitute a majority of the Board of Directors
      then in office; provided, however, that no Change of Control shall occur
      if the "person" or "group" in the case of clause (i) above is a Strategic
      Investor or the "beneficial owner" of voting power in excess of 50% of the
      voting power of the Corporation in the case of clause (ii) above is a
      Strategic Investor and such Strategic Investor beneficially owns in excess
      of 50% of the voting power of the Corporation.

            "Commission" means the Securities and Exchange Commission.

            "Disqualified Capital Stock" means any Capital Stock that, by its
      terms (or by the terms of any security into which it is convertible or for
      which it is exchangeable or exercisable), or upon the happening of any
      event, matures (excluding any maturity as the result of an optional
      redemption by the issuer thereof) or is mandatorily redeemable, pursuant
      to a sinking fund obligation or otherwise, or is redeemable at the option
      of the holder thereof, in whole or in part, on or prior to the mandatory
      redemption date of the Redeemable Preferred Stock.

            "Dividend Payment Date" means March 31, June 30, September 30 and
      December 31 of each year.

            "Dividend Period" means the Initial Dividend Period and, thereafter,
      each Quarterly Dividend Period.

            "Dividend Record Date" means March 15, June 15, September 15 and
      December 15 of each year.

<PAGE>   24

            "Exchange Act" means the Securities Exchange Act of 1934, as
      amended, and the rules and regulations promulgated thereunder.

            "Holder" means a holder of shares of Redeemable Preferred Stock as
      reflected in the stock books of the Corporation.

            "Indebtedness" means at any time (without duplication), with respect
      to any Person, whether recourse is to all or a portion of the assets of
      such Person, and whether or not contingent, (i) any obligation of such
      Person for money borrowed, (ii) any obligation of such Person evidenced by
      bonds, debentures, notes, guarantees or other similar instruments,
      including, without limitation, any such obligations incurred in connection
      with the acquisition of property, assets or businesses, excluding trade
      accounts payable made in the ordinary course of business, (iii) any
      reimbursement obligation of such Person with respect to letters of credit,
      bankers' acceptances or similar facilities issued for the account of such
      Person, (iv) any obligation of such Person issued or assumed as the
      deferred purchase price or property or services (but excluding trade
      accounts payable or accrued liabilities arising in the ordinary course of
      business, which in either case are not more than 60 days overdue or which
      are being contested in good faith), (v) any capital lease obligation of
      such Person, (vi) the maximum fixed redemption or repurchase price of
      Disqualified Stock of such Person's restricted subsidiaries, at the time
      of determination, (vii) the notional amount of any interest hedging
      obligations or exchange rate obligations of such person, (viii) any
      indebtedness attributable to any sale and leaseback transaction to which
      such person is a party and (ix) any obligation of the type referred to in
      clauses (i) through (viii) of this definition of another Person and all
      dividends and distributions of another Person the payment of which, in
      either case, such Person has guaranteed or is responsible or liable for,
      directly or indirectly, as obligor, guarantor or otherwise. For purposes
      of the preceding sentence, the maximum fixed repurchase price of any
      Disqualified Stock that does not have a fixed repurchase price shall be
      calculated in accordance with the terms of such Disqualified Stock as if
      such Disqualified Stock were repurchased on any date on which Indebtedness
      shall be required to be determined hereunder; provided that if such
      Disqualified Stock is not then permitted to be repurchased, the repurchase
      price shall be the book value of such Disqualified Stock.

            "Independent Financial Advisor" means a United States investment
      banking firm of national standing in the United States which does not, and
      whose directors, officers and employees or affiliates do not, have a
      direct or indirect financial interest in the Corporation.

<PAGE>   25

            "Initial Dividend Period" means the dividend period commencing on
      the Issue Date and ending on September 30, 1997.

            "Issue Date" means the date of original issuance of the Redeemable
      Preferred Stock.

            "Junior Stock" shall have the meaning ascribed to it in paragraph
      (b) hereof.

            "Mandatory Redemption Price" shall have the meaning ascribed to it
      in paragraph (e) hereof.

            "Optional Redemption Price" shall have the meaning ascribed to it in
      paragraph (e)(i) hereof.

            "Parent" means, with respect to any entity, an entity which,
      directly or indirectly, owns, at the time, a majority of the voting
      interest of such first-referenced entity.

            "Parity Stock" shall have the meaning ascribed to it in paragraph
      (b) hereof.

            "Permitted Holders" means The Huff Alternative Income Fund, L.P.,
      ING Equity Partners, L.P.I., Apex Investment Fund I, L.P., Apex Investment
      Fund II, L.P., The Productivity Fund II, L.P. and Anthony J. Pompliano and
      their respective affiliates (other than the Corporation and its
      subsidiaries) of each of the foregoing.

            "Person" means any individual, corporation, partnership, joint
      venture, trust, unincorporated organization or government or any agency or
      subdivision thereof.

            "Post-Closing Parity Stock" means a class or classes of Parity Stock
      issued and sold by the Corporation within 365 days of the Issue Date and
      containing terms as to liquidation preference, redemption and voting not
      materially different from those of the Redeemable Preferred Stock.

            "Public Equity Offering" means an underwritten public offering of
      Capital Stock (other than Disqualified Capital Stock) of the Corporation.

            "Qualified Capital Stock" means any Capital Stock that is not
      Disqualified Capital Stock.

            "Quarterly Dividend Period" shall mean the quarterly period
      commencing on each January 1, April 1, July 1 and October 1 and ending on
      the next succeeding Dividend Payment Date, respectively.

            "Redeemable Preferred Stock" shall have the meaning ascribed to it
      in paragraph (a) hereof.

<PAGE>   26

            "Redemption Date", with respect to any shares of Redeemable
      Preferred Stock, means the date on which such shares of Redeemable
      Preferred Stock are redeemed by the Corporation.

            "Redemption Notice" shall have the meaning ascribed to it in
      paragraph (e) hereof.

            "Registration Rights Agreement" means the Registration Rights
      Agreement dated as of the Issue Date among the Corporation, BT Securities
      Corporation, Alex. Brown & Sons Incorporated and the other parties
      thereto.

            "Securities Act" means the Securities Act of 1933, as amended, and
      the rules and regulations promulgated thereunder.

            "Senior Stock" shall have the meaning ascribed to it in paragraph
      (b) hereof.

            "Shelf Registration Statement" means a registration statement filed
      by the Corporation with the Commission for an offering to be made on a
      continuous basis pursuant to Rule 415 promulgated under the Securities Act
      covering all of the Redeemable Preferred Stock.

            "Strategic Investor" means a publicly traded company (i) whose
      principal business is operating a public utility company and/or a cable
      and/or telephone and/or telecommunications system in the United States or
      which, after the consummation of the relevant transaction, is or will be
      delivering its own services over the networks or systems of the
      Corporation and any business reasonably related to the foregoing or
      creating, developing or marketing communications related network
      equipment, software or other devices for use in transmitting voice, video
      or data, (ii) which has a Total Equity Market Capitalization in excess of
      $1 billion and (iii) whose senior unsecured debt securities are rated (or
      carry an implied rating) by Moody's Investors Service, Inc. (or any
      successor to the rating agency business thereof) or Standard & Poor's
      Corporation (or any successor to the rating agency business thereof) as
      Baa- or BBB-, respectively, or better, on a pro forma basis assuming the
      consummation of any transaction with the Corporation, provided if such
      securities are rated by both such rating agencies, the lowest rating of
      the two shall govern for purposes of this definition.

            "Total Equity Market Capitalization" of any Person means, as of any
      day of determination, the sum of (1) the product of (A) the aggregate
      number of outstanding primary shares of common stock of such Person on
      such day (which 

<PAGE>   27

      shall not include any options or warrants on, or securities convertible or
      exchangeable into or exercisable for, shares of common stock of such
      Person) multiplied by (B) the average closing price of such common stock
      over the 20 consecutive trading days immediately preceding such day, plus
      (2) the liquidation value of any outstanding shares of preferred stock of
      such Person on such day.

            "Transfer Agent" shall mean The Bank of New York.

            "Voting Rights Triggering Event" shall have the meaning ascribed to
      it in paragraph (f)(iv) hereof.

<PAGE>   28

                                    EXHIBIT B

            American Communications Services, Inc., a corporation organized and
existing under the General Corporation Law of the State of Delaware (the
"Corporation"),

      DOES HEREBY CERTIFY:

            1. That the Restated Certificate of Incorporation of the Corporation
was filed in the office of the Secretary of State of the State of Delaware on
July 3, 1997 and a Certificate of the Designations, Preferences and Rights of
the Corporation's 14.75% Redeemable Preferred Stock due 2008 was filed in said
office of the Secretary of State on July 8, 1997.

            2. That no shares of the class of preferred stock designated in the
above-referenced Certificate of Designation have been issued by the Corporation.

            3. That pursuant to the provisions of Section 151 of the General
Corporation Law of the State of Delaware, the Board of Directors of the
Corporation, by unanimous written consent dated July 9, 1997, duly approved and
adopted the following resolution (the "Resolution"):

      RESOLVED, that the Certificate of Designation of the Powers, Preferences
      and Relative, Participating, Optional and other Special Rights of the
      Redeemable Preferred Stock Due 2008 of the Corporation and Qualifications,
      Limitations and Restrictions thereof (the "Certificate"), and the
      resolution of the Board of Directors of the Corporation contained therein
      as filed with the Secretary of State of the State of Delaware on July 8,
      1997, shall be amended as follows:

            (a) paragraph (c) (viii) (D) shall be amended by deleting the word
            "second" in the third line thereof and replacing it with the word
            "third";

            (b) the definition of "Post-Closing Parity Stock" in paragraph (k)
            shall be amended by deleting the number "365" in the third line
            thereof and replacing it with the number "120"; and

            (c) the definition of "Permitted Holders" in paragraph (k) shall be
            amended by deleting the word "their" in the fourth line thereof and
            replacing it with the word "the",

      and that the proper officers of the Corporation be, and each of them
      hereby is, authorized and empowered, to execute and file said amendment to
      the Certificate with the Secretary of State of the State of Delaware.
<PAGE>   29
                                                                               1


                                    EXHIBIT C

            American Communications Services, Inc. (the "Corporation"), a
corporation organized and existing under the General Corporation Law of the
State of Delaware, does hereby certify that, pursuant to the authority conferred
upon the Board of Directors of the Corporation by the Corporation's Second
Restated Certificate of Incorporation, as amended (the "Certificate of
Incorporation") and in accordance with the provisions of Section 151 of the
General Corporation Law of the State of Delaware, said Board of Directors,
acting by unanimous written consent dated October 15, 1997, duly approved and
adopted the following resolution (hereafter, this "Certificate of Designation"):

            RESOLVED, that pursuant to the authority vested in the Board of
Directors by the Certificate of Incorporation, the Board of Directors does
hereby designate, create, authorize and provide for the issue by the
Corporation, out of the authorized but unissued shares of Preferred Stock, par
value $1.00 per share, of 12.75% Series A Junior Redeemable Preferred Stock due
2009 (the "Series A 12.75% Preferred Stock") and 12.75% Series B Junior
Redeemable Preferred Stock due 2009 (the "Series B 12.75% Preferred Stock" and,
together with the Series A 12.75% Preferred Stock, the "12.75% Preferred
Stock"), with a stated value (the "Liquidation Preference") of $1,000 per share,
consisting in the aggregate of 900,000 shares of 12.75% Preferred Stock, of
which 200,000 shares shall be Series A 12.75% Preferred Stock and 700,000 shares
shall be Series B 12.75% Preferred Stock; provided that, so long as any shares
of the Series A 12.75% Preferred Stock remain outstanding, no shares of Series B
12.75% Preferred Stock may be issued, except upon the surrender and cancellation
of shares of Series A 12.75% Preferred Stock having an aggregate Liquidation
Preference equal to the aggregate Liquidation Preference of the shares of Series
B 12.75% Preferred Stock so issued. The 12.75% Preferred Stock shall have the
powers, preferences and relative, participating, optional and other special
rights, and the qualifications, limitations and restrictions that are set forth
in the Certificate of Incorporation and in this Resolution as follows:

            1.  Certain Definitions

            Unless the context otherwise requires, each of the terms defined in
this Section 1 shall have, for all purposes of this Certificate of Designation,
the meaning herein specified (with terms defined in the singular having
comparable meanings when used in the plural):

            "Acquired Indebtedness" means, with respect to any specified Person,
Indebtedness of any other Person existing at the time such other Person merged
with or into or became a Subsidiary of such specified Person, including
Indebtedness incurred in connection with, or in contemplation of, such other
Person merging with or into or becoming a Subsidiary of such specified Person,
but excluding Indebtedness which is extinguished, retired or repaid in
<PAGE>   30
                                                                               2


connection with such other Person merging with or into or becoming a Subsidiary
of such specified Person.

      "Additional Dividends" has the meaning set forth in Section 3(f) below.

      "Affiliate" means, as to any Person, any other Person which directly or
indirectly controls, or is under common control with, or is controlled by, such
Person; provided that each Unrestricted Subsidiary shall be deemed to be an
Affiliate of the Corporation and of each other Subsidiary of the Corporation;
provided, further, that neither the Corporation nor any of its Restricted
Subsidiaries shall be deemed to be Affiliates of each other; and provided,
further, that any lender under the Secured Credit Facility and its Affiliates
shall not be deemed to be Affiliates of the Corporation or any Restricted
Subsidiary solely as a result of the existence of the Secured Credit Facility or
their holdings of Capital Stock of the Corporation or any Restricted Subsidiary
acquired in connection with the Secured Credit Facility. For purposes of this
definition, "control" (including, with correlative meanings, the terms
"controlling," "under common control with" and "controlled by"), and as used
with respect to any Person, shall mean the possession, directly or indirectly,
of the power to direct or cause the direction of the management or policies of
such Person, whether through the ownership of Voting Stock, by agreement or
otherwise; provided that beneficial ownership of 10% or more of the Voting Stock
of a Person shall be deemed to be control.

      "Annualized Pro Forma EBITDA" means with respect to any Person, such
Person's Pro Forma EBITDA for the latest fiscal quarter for which internal
financial statements are then available multiplied by four.

      "Asset Sale" means, with respect to any Person, any transfer, conveyance,
sale, lease or other disposition (including, without limitation, by way of
consolidation or merger, but excluding by means of any Sale and Leaseback
Transaction or by the granting of a Lien permitted under the definition of
"Permitted Liens" herein) by such Person or any of its Restricted Subsidiaries
to any Person other than the Corporation or a Restricted Subsidiary of the
Corporation, in one transaction, or a series of related transactions (each
hereinafter referred to as a "Disposition"), of Property or assets of such
Person or any of its Restricted Subsidiaries, the Fair Market Value of which
exceeds $2.0 million, other than (i) a Disposition of Property in the ordinary
course of business consistent with industry practice and (ii) a Disposition by
the Corporation in connection with a transaction permitted under Section 8(b)
hereof.

      "Attributable Indebtedness" means, with respect to any Sale and Leaseback
Transaction of any Person, as at the time of determination, the greater of (i)
the capitalized amount in respect of such transaction that would appear on the
balance sheet of such Person in accordance with GAAP and (ii) the present value
(discounted at a rate consistent with accounting guidelines, as determined in
good faith by such Person) of the payments during the remaining term of the
lease (including any period for which such lease has been extended or may, at
the option of the lessor, 
<PAGE>   31
                                                                               3


be extended) or until the earliest date on which the lessee may terminate such
lease without penalty or upon payment of a penalty (in which case the rental
payments shall include such penalty).

      "Board of Directors" means the Board of Directors of the Corporation.

      "Business Day" means any day other than a Saturday, a Sunday or any day on
which banking institutions in New York, New York, are required or authorized by
law or other governmental action to be closed.

      "Capital Lease Obligation" of any Person means the obligation to pay rent
or other payment amounts under a lease of (or other Indebtedness arrangement
conveying the right to use) real or personal property of such Person which is
required to be classified and accounted for as a capital lease or a liability on
the face of a balance sheet of such Person in accordance with GAAP and the
stated maturity thereof shall be the date of the last payment of rent or any
amount due under such lease prior to the first date upon which such lease may be
terminated by the lessee without payment of a penalty.

      "Capital Stock" in any Person means any and all shares, interests,
participations or other equivalents in the equity interest (however designated)
in such Person and any rights (other than Indebtedness convertible into an
equity interest), warrants or options to acquire an equity interest in such
Person.

      "Cash Equivalents" means (i) securities issued or directly and fully
guaranteed or insured by the United States of America or any agency or
instrumentality thereof (provided that the full faith and credit of the United
States of America is pledged in support thereof), (ii) time deposits and
certificates of deposit of any commercial bank organized in the United States of
America having capital and surplus in excess of $500 million with a maturity
date not more than one year from the date of acquisition, (iii) repurchase
obligations with a term of not more than seven days for underlying securities of
the types described in clause (i) above entered into with any bank meeting the
qualifications specified in clause (ii) above, (iv) direct obligations issued by
any state of the United States of America or any political subdivision of any
such state or any public instrumentality thereof maturing, or subject to tender
at the option of the holder thereof within ninety days after the date of
acquisition thereof and, at the time of acquisition, having a rating of A or
better from Standard & Poor's Ratings Group ("Standard & Poor's") or A-2 or
better from Moody's Investors Service, Inc. ("Moody's"), (v) commercial paper
issued by the parent corporation of any commercial bank organized in the United
States of America having capital and surplus in excess of $500 million and
commercial paper issued by others having one of the two highest ratings
obtainable from either Standard & Poor's or Moody's and in each case maturing
within ninety days after the date of acquisition, (vi) overnight bank deposits
and bankers' acceptances at any commercial bank organized in the United States
of America having capital and surplus in excess of 
<PAGE>   32
                                                                               4


$500 million, (vii) deposits available for withdrawal on demand with a
commercial bank organized in the United States of America having capital and
surplus in excess of $500 million and (viii) investments in money market funds
substantially all of whose assets comprise securities of the types described in
clauses (i) through (vi).

      "Certificated Securities" has the meaning set forth in Section 14(e)
below.

      "Change of Control" means the occurrence of any of the following: (i) the
sale, lease, transfer or conveyance of all or substantially all of the assets of
the Corporation to any "person" or "group" (as such term is used in Section
13(d)(3) and 14(d)(2) of the Exchange Act or any successor provisions to either
of the foregoing, including any group acting for the purpose of acquiring,
holding or disposing of securities within the meaning of Rule 13d-5(b)(i) under
the Exchange Act) (other than any Permitted Holder or any Subsidiary of the
Corporation), (ii) any "person" or "group" as aforesaid, other than any
Permitted Holder, becomes the "beneficial owner" (as such term is defined in
Rule 13d-3 under the Exchange Act) of more than 35% of the voting power of
common stock of the Corporation, including warrants and options to acquire such
common stock, calculated on a fully diluted basis, and such voting power
percentage is greater than or equal to the total voting power percentage then
beneficially owned by the Permitted Holders in the aggregate or (iii) during any
period of two consecutive years, individuals who at the beginning of such period
constituted the Board of Directors (together with any new directors whose
election or appointment by such Board of Directors or whose nomination for
election by the shareholders of the Corporation was approved by a vote of a
majority of the directors then still in office who were either directors at the
beginning of such period or whose election or nomination for election was
previously so approved) cease for any reason to constitute a majority of the
Board of Directors then in office; provided, however, that no Change of Control
shall be deemed to occur if the "person" or "group", in the case of clause (i)
above, is a Strategic Investor or the "beneficial owner" of voting power in
excess of 50% of the voting power of the common stock of the Corporation, or, in
the case of clause (ii) above, is a Strategic Investor and such Strategic
Investor beneficially owns in excess of 50% of such voting power.

      "Change of Control Offer" has the meaning set forth in Section 7(a) below.

      "Change of Control Payment" has the meaning set forth in Section 7(a)
below.

      "Change of Control Payment Date" has the meaning set forth in Section
7(d)(ii) below.

      "Commission" means the Securities and Exchange Commission.

      "Consolidated Interest Expense" means, with respect to any Person for any
period, without duplication, (A) the sum of (i) the aggregate amount of cash and
non-cash interest expense (including capitalized interest) of such Person and
its Restricted Subsidiaries for such period as determined on a consolidated
basis in accordance with GAAP in respect of Indebtedness (including, without
limitation, (v) any amortization of debt discount, (w) net 
<PAGE>   33
                                                                               5


costs associated with Interest Hedging Obligations (including any amortization
of discounts), (x) the interest portion of any deferred payment obligation, (y)
all accrued interest and (z) all commissions, discounts and other fees and
charges owed with respect to letters of credit, bankers' acceptances or similar
facilities) paid or accrued, or scheduled to be paid or accrued, during such
period; (ii) dividends or distributions with respect to preferred stock or
Disqualified Stock of such Person (and of its Restricted Subsidiaries if paid to
a Person other than such Person or its Restricted Subsidiaries) declared and
payable in cash; (iii) the portion of any rental obligation of such Person or
its Restricted Subsidiaries in respect of any Capital Lease Obligation allocable
to interest expense in accordance with GAAP; (iv) the portion of any rental
obligation of such Person or its Restricted Subsidiaries in respect of any Sale
and Leaseback Transaction allocable to interest expense (determined as if such
were treated as a Capital Lease Obligation); and (v) to the extent any
Indebtedness of any other Person is Guaranteed by such Person or any of its
Restricted Subsidiaries, the aggregate amount of interest paid, accrued or
scheduled to be paid or accrued, by such other Person during such period
attributable to any such Indebtedness, less (B) to the extent included in (A)
above, amortization or write-off of deferred financing costs of such Person and
its Restricted Subsidiaries during such period and any charge related to any
premium or penalty paid in connection with redeeming or retiring any
Indebtedness of such Person and its Restricted Subsidiaries prior to its stated
maturity; in the case of both (A) and (B) above, after elimination of
intercompany accounts among such Person and its Restricted Subsidiaries and as
determined in accordance with GAAP.

      "Consolidated Leverage Ratio" means, for any Person, as of any date, the
ratio of (i) the sum of the aggregate outstanding amount of all Indebtedness of
such Person and its Subsidiaries determined on a consolidated basis in
accordance with GAAP to (ii) the Annualized Pro Forma EBITDA of such Person.

      "Consolidated Net Income" means, with respect to any Person for any
period, the aggregate net income (or net loss) of such Person and its Restricted
Subsidiaries for such period on a consolidated basis determined in accordance
with GAAP, provided that there shall be excluded therefrom, without duplication,
(i) all items classified as extraordinary, (ii) any net income of any Person
other than such Person and its Restricted Subsidiaries, except to the extent of
the amount of dividends or other distributions actually paid to such Person or
its Restricted Subsidiaries by such other Person during such period; (iii) the
net income of any Person acquired by such Person or any of its Restricted
Subsidiaries in a pooling-of-interests transaction for any period prior to the
date of the related acquisition; (iv) any gain or loss, net of taxes, realized
on the termination of any employee pension benefit plan; (v) net gains (but not
net losses) in respect of Asset Sales by such Person or its Restricted
Subsidiaries; (vi) the net income (but not net loss) of any Restricted
Subsidiary of such Person to the extent that the payment of dividends or other
distributions to such Person is restricted by the terms of its charter or any
agreement, instrument, contract, judgment, order, decree, statute, rule,
governmental regulation or otherwise, except for any dividends or 
<PAGE>   34
                                                                               6


distributions actually paid by such Restricted Subsidiary to such Person; (vii)
with regard to a non-wholly owned Restricted Subsidiary, any aggregate net
income (or loss) in excess of such Person's or such Restricted Subsidiary's pro
rata share of such non-wholly owned Restricted Subsidiary's net income (or
loss); and (viii) the cumulative effect of changes in accounting principles.

      "Consolidated Net Worth" means, with respect to any Person as of any date,
the sum of (i) the consolidated equity of the common stockholders of such Person
and its consolidated Subsidiaries as of such date plus (ii) the respective
amounts reported on such Person's balance sheet as of such date with respect to
any series of preferred stock (other than Disqualified Stock) that by its terms
is not entitled to the payment of dividends unless such dividends may be
declared and paid only out of net earnings in respect of the year of such
declaration and payment, but only to the extent of any cash received by such
Person upon issuance of such preferred stock, less (x) all write-ups (other than
write-ups resulting from foreign currency translations and write-ups of tangible
assets of a going concern business made within 12 months after the acquisition
of such business) subsequent to the Issue Date in the book value of any asset
owned by such Person or a consolidated Subsidiary of such Person, (y) all
investments as of such date in unconsolidated Subsidiaries and in Persons that
are not Subsidiaries (except, in each case, Permitted Investments) and (z) all
unamortized debt discount and expense and unamortized deferred charges as of
such date, all of the foregoing determined in accordance with GAAP.

      "Credit Agreement" means, with respect to any Person, any agreement
entered into by and among such Person and one or more commercial banks or
financial institutions, providing for senior term or revolving credit borrowings
of a type similar to credit agreements typically entered into by commercial
banks and financial institutions, including any related notes, Guarantees,
collateral documents, instruments and agreements executed in connection
therewith, as such credit agreement and related agreements may be amended,
extended, refinanced, renewed, restated, replaced or refunded from time to time.

      "DGCL" shall mean the Delaware General Corporation Law, as amended.

      "Default" means any event that is or with the passage of time or the
giving of notice or both would be an Event of Default.

      "Depositary" has the meaning set forth in Section 14(a) below.

      "Disqualified Stock" means any Capital Stock (other than the 14.75%
Preferred Stock) which, by its terms (or by the terms of any security into which
it is convertible or for which it is exchangeable), or upon the happening of any
event, or otherwise, matures or is mandatorily redeemable, pursuant to a sinking
fund obligation or otherwise, or is redeemable at the option of the holder
thereof, or is exchangeable for Indebtedness at any time, in whole or in part,
on or prior to the mandatory redemption date of the 12.75% Preferred Stock.
<PAGE>   35
                                                                               7


      "Dividend Default" has the meaning set forth in Section 6(c) below.

      "Dividend Payment Date" has the meaning set forth in Section 3(a) below.

      "Dividend Period" has the meaning set forth in Section 3(a) below.

      "EBIT" means the amount calculated in the same manner as EBITDA, but not
including clauses (iii) and (iv) of the definition thereof.

      "EBITDA" means, with respect to any Person for any period, the sum for
such Person for such period of Consolidated Net Income plus, to the extent
reflected in the income statement of such Person for such period from which
Consolidated Net Income is determined, without duplication, (i) Consolidated
Interest Expense, (ii) income tax expense, (iii) depreciation expense, (iv)
amortization expense, (v) any non-cash expense related to the issuance to
employees of such Person of options to purchase Capital Stock of such Person and
(vi) any charge related to any premium or penalty paid in connection with
redeeming or retiring any Indebtedness prior to its stated maturity and minus,
to the extent reflected in such income statement, any non-cash credits that had
the effect of increasing Consolidated Net Income of such Person for such period.

      "Effectiveness Target Date" means 120 days after the Issue Date.

      "Exchange Act" means the Securities Exchange Act of 1934, as amended, and
the rules and regulations promulgated thereunder.

      "Exchange Offer" means the offer by the Corporation, pursuant to the
Registration Rights Agreement, to the Holders of the outstanding Series A 12.75%
Preferred Stock the opportunity to exchange all such outstanding shares held by
such Holders for shares of Series B 12.75% Preferred Stock that have been
registered under the Securities Act.

      "Exchange Offer Registration Statement" means the Registration Statement
filed by the Corporation relating to the Exchange Offer.

      "Exchange Rate Obligation" means, with respect to any Person, any currency
swap agreements, forward exchange rate agreements, foreign currency futures or
options, exchange rate collar agreements, exchange rate insurance and other
agreements or arrangements, or combination thereof, designed to provide
protection against fluctuations in currency exchange rates.

      "Existing Indebtedness" means Indebtedness of the Corporation and its
Subsidiaries outstanding on the Issue Date.

      "Existing Notes" means, collectively, the Corporation's 13% Senior
Discount Notes due 2005 (the "2005 Notes"), the Corporation's 12.75% Senior
Discount Notes due 2006 (the "2006 
<PAGE>   36
                                                                               8


Notes") and the Corporation's 13.75% Senior Notes due 2007 (the "2007 Notes").

      "Fair Market Value" means, with respect to any asset or Property, the sale
value that would be obtained in an arm's-length transaction between an informed
and willing seller under no compulsion to sell and an informed and willing buyer
under no compulsion to buy, as determined in good faith by the Board of
Directors.

      "Fiber Network" means a digital fiber optic telecommunications network
wholly owned by the Corporation that serves a Metropolitan Area.

      "14.75% Preferred Stock" means the Corporation's 14.75% Redeemable
Preferred Stock due 2008.

      "GAAP" means United States generally accepted accounting principles,
consistently applied, as set forth in the opinions and pronouncements of the
Accounting Principles Board of the American Institute of Certified Public
Accountants and statements and pronouncements of the Financial Accounting
Standards Board, or in such other statements by such other entity as may be
approved by a significant segment of the accounting profession of the United
States, that are applicable to the circumstances as of the date of
determination; provided that, except as otherwise specifically provided, all
calculations made for purposes of determining compliance with the terms of the
provisions of this Certificate of Designation shall utilize GAAP as in effect on
the Issue Date.

      "Global Securities" has the meaning set forth in Section 14(a) below.

      "Global Security Holder" has the meaning set forth in Section 14(a) below.

      "Guarantee" means any direct or indirect obligation, contingent or
otherwise, of a Person guaranteeing or having the economic effect of
guaranteeing any Indebtedness of any other Person in any manner (and
"Guaranteed," "Guaranteeing" and "Guarantor" shall have meanings correlative to
the foregoing).

      "Holder" means the record holder of one or more shares of 12.75% Preferred
Stock, as shown on the books and records of the Transfer Agent.

      "Indebtedness" means at any time (without duplication), with respect to
any Person, whether recourse is to all or a portion of the assets of such
Person, and whether or not contingent, (i) any obligations of such Person for
money borrowed, (ii) any obligation of such Person evidenced by bonds,
debentures, notes, Guarantees or other similar instruments, including, without
limitation, any such obligations incurred in connection with acquisition of
Property, assets or businesses, excluding trade accounts payable made in the
ordinary course of business, (iii) any reimbursement obligation of such Person
with respect to letters of credit, bankers' acceptances or similar facilities
issued for the account of such Person, (iv) any obligation of such Person issued
or assumed as the deferred purchase price of Property or services 
<PAGE>   37
                                                                               9


(but excluding trade accounts payable or accrued liabilities arising in the
ordinary course of business, which in either case are not more than 60 days
overdue or which are being contested in good faith), (v) any Capital Lease
Obligation of such Person, (vi) the maximum fixed redemption or repurchase price
of Disqualified Stock of such Person and, to the extent held by other Persons,
the maximum fixed redemption or repurchase price of Disqualified Stock of such
Person's Restricted Subsidiaries, at the time of determination, (vii) the
notional amount of any Interest Hedging Obligations or Exchange Rate Obligations
of such Person at the time of determination, (viii) any Attributable
Indebtedness with respect to any Sale and Leaseback Transaction to which such
Person is a party and (ix) any obligation of the type referred to in clauses (i)
through (viii) of this definition of another Person and all dividends and
distributions of another Person the payment of which, in either case, such
Person has Guaranteed or is responsible or liable for, directly or indirectly,
as obligor, Guarantor or otherwise. For purposes of the preceding sentence, the
maximum fixed repurchase price of any Disqualified Stock that does not have a
fixed repurchase price shall be calculated in accordance with the terms of such
Disqualified Stock as if such Disqualified Stock were repurchased on any date on
which Indebtedness shall be required to be determined pursuant to this
Certificate of Designation; provided that if such Disqualified Stock is not then
permitted to be repurchased, the repurchase price shall be the book value of
such Disqualified Stock. The amount of Indebtedness of any Person at any date
shall be the outstanding balance at such date of all unconditional obligations
as described above and the maximum liability of any Guarantees at such date;
provided that for purposes of calculating the amount of the 2005 Notes or 2006
Notes outstanding at any date, the amount of such 2005 Notes or 2006 Notes shall
be the Accreted Value (as defined in the relevant indenture) thereof as of such
date unless cash interest has commenced to accrue pursuant to the relevant
indenture, in which case the amount of the 2005 Notes or 2006 Notes outstanding
will be determined pursuant to the relevant indenture and will not include any
accrued and unpaid cash interest which would otherwise be included in Accreted
Value because of clause (iii) of the definition thereof in the relevant
indenture.

      "Independent Financial Advisor" means a United States investment banking
firm of national standing in the United States of America which does not, and
whose directors, officers and employees or affiliates do not, have a direct or
indirect financial interest in the Corporation.

      "Interest Hedging Obligation" means, with respect to any Person, an
obligation of such Person pursuant to any interest rate swap agreement, interest
rate cap, collar or floor agreement or other similar agreement or arrangement
designed to protect against or manage such Person's or any of its Subsidiaries'
exposure to fluctuations in interest rates.

      "Investment" in any Person means any direct, indirect or contingent (i)
advance or loan to, Guarantee of any Indebtedness of, extension of credit or
capital contribution to such Person, (ii) the acquisition of any shares of
Capital Stock, bonds, notes, debentures or other securities of such Person, or
(iii) the 
<PAGE>   38
                                                                              10


acquisition, by purchase or otherwise, of all or substantially all of the
business, assets or stock or other evidence of beneficial ownership of such
Person; provided that Investments shall exclude commercially reasonable
extensions of trade credit. The amount of any Investment shall be the original
cost of such Investment, plus the cost of all additions thereto and minus the
amount of any portion of such investment repaid to such person in cash as a
repayment of principal or a return of capital, as the case may be, but without
any other adjustments for increases or decreases in value, or write-ups,
write-downs or write-offs with respect to such Investment. In determining the
amount of any Investment involving a transfer of any Property other than cash,
such Property shall be valued at its Fair Market Value at the time of such
transfer.

      "Issue Date" means the date of initial issuance of the Series A 12.75%
Preferred Stock.

      "Junior Stock" has the meaning set forth in Section 2 below.

      "Lien" means, with respect to any Property or other asset, any mortgage or
deed or trust, pledge, hypothecation, assignment, deposit arrangement, security
interest, lien (statutory or other), charge, easement, encumbrance, preference,
priority or other security or similar agreement or preferential arrangement of
any kind or nature whatsoever on or with respect to such Property or other asset
(including, without limitation, any conditional sale or title retention
agreement having substantially the same economic effect as any of the
foregoing).

      "Liquidation Preference" means $1,000 per share of 12.75% Preferred Stock.

      "Metropolitan Area" means the 31 metropolitan areas in which the
Corporation, as of June 30, 1997, has a Fiber Network and other metropolitan
areas deemed in the reasonable business judgment of the management of the
Corporation to provide an opportunity for the building and operation of such a
Fiber Network with the reasonable potential to produce financial results for the
Corporation at least substantially comparable to the metropolitan areas in which
the Corporation has such operational Fiber Networks.

      "Net Income" means, with respect to any Person, the net income (loss) of
such Person, determined in accordance with GAAP and before any reduction in
respect of preferred stock dividends, excluding, however, (i) any gain or loss,
together with any related provision for taxes on such gain or loss, realized in
connection with (a) any Asset Sale (including, without limitation, dispositions
pursuant to Sale and Leaseback Transactions) or (b) the disposition of any
securities by such Person or any of its Subsidiaries or the extinguishment of
any Indebtedness of such Person or any of its Subsidiaries and (ii) any
extraordinary or nonrecurring gain or loss, together with any related provision
for taxes on such extraordinary or nonrecurring gain or loss.

      "Obligations" means any principal, interest, penalties, fees,
indemnifications, reimbursements, damages and other liabilities payable under
the documentation governing any Indebtedness.
<PAGE>   39
                                                                              11


      "Officer" means, with respect to any Person, the Chairman of the Board,
the Chief Executive Officer, the President, the Chief Operating Officer, the
Chief Financial Officer, the Treasurer, any Assistant Treasurer, the Controller,
the Secretary, any Assistant Secretary or any Vice-President of such Person.

      "Officers' Certificate" means a certificate signed by the Chairman of the
Board, a Vice Chairman of the Board, the President or a Vice President, and by
the Chief Financial Officer, the Chief Accounting Officer, the Treasurer, an
Assistant Treasurer, the Secretary or an Assistant Secretary of the Corporation
and delivered to the Transfer Agent, which shall comply with this Certificate of
Designation.

      "Parent" means, with respect to any corporation or other entity, an entity
that, directly or indirectly, owns, at the time, a majority of the voting
interest of such corporation or other entity.

      "Parity Stock" has the meaning set forth in Section 2 below.

      "Payment Default" has the meaning set forth in Section 6(b)(v).

      "Permitted Holders" means The Huff Alternative Income Fund, L.P., ING
Equity Partners, L.P.I., Apex Investment Fund I, L.P., Apex Investment Fund II,
L.P., The Productivity Fund II, L.P. and Anthony J. Pompliano and the respective
affiliates (other than the Corporation and its Subsidiaries) of each of the
foregoing.

      "Permitted Liens" means (i) Liens on Property or assets of a Person
existing at the time such Person is merged into or consolidated with the
Corporation or any Subsidiary of the Corporation, provided that such Liens were
in existence prior to the contemplation of such merger or consolidation and do
not secure any Property or assets of the Corporation or any of its Subsidiaries
other than the Property or assets subject to such Liens prior to such merger or
consolidation; (ii) Liens on Telecommunications Related Assets existing during
the time of the construction thereof; (iii) Liens incurred or deposits made to
secure the performance of tenders, bids, leases, statutory or regulatory
obligations, surety or appeal bonds, performance bonds or other obligations of a
like nature incurred in the ordinary course of business consistent with industry
practice; (iv) Liens existing as of the Issue Date; (v) Liens to secure
borrowings permitted under Section 8(a)(ii)(A) hereof (including any such liens
arising in connection with a Secured Credit Facility); (vi) any Lien on Property
of the Corporation in favor of the United States of America or any state
thereof, or any instrumentality of either, to secure certain payments pursuant
to any contract or statute; (vii) any Lien for taxes or assessments or other
governmental charges or levies not then due and payable (or which, if due and
payable, are being contested in good faith and for which adequate reserves are
being maintained, to the extent required by GAAP); (viii) easements,
rights-of-way, licenses and other similar restrictions on the use of Properties
or minor imperfections of title that, in the aggregate, are not material in
amount and do not in any case materially detract from the 
<PAGE>   40
                                                                              12


Properties subject thereto or interfere with the ordinary conduct of the
business of the Corporation or its Subsidiaries; (ix) any Lien to secure
obligations under workmen's compensation laws or similar legislation, including
any Lien with respect to judgments that are not currently dischargeable; (x) any
statutory warehousemen's, materialmen's or other similar Liens for sums not then
due and payable (or which, if due and payable, are being contested in good faith
and with respect to which adequate reserves are being maintained, to the extent
required by GAAP); (xi) any interest or title of a lessor in Property subject to
a Capital Lease Obligation; (xii) Liens to secure any Vendor Debt; provided that
such Liens do not extend to any Property or assets other than the Property or
assets the acquisition of which was financed by such Indebtedness; (xiii) Liens
in favor of the Corporation or any Restricted Subsidiary; (xiv) Liens on
Property or assets of a Person existing prior to the time such Person is
acquired by the Corporation as a result of (a) Investments by the Corporation or
a Restricted Subsidiary in or in respect of a Person to the extent the
consideration for such Investment consists of shares of Qualified Stock of the
Corporation or (b) Investments in certain joint venture entities, provided that
such Liens were in existence prior to the contemplation of such Investment and
do not secure any Property or assets of the Corporation or any of its
Subsidiaries other than the Property or assets subject to such Liens prior to
such Investment; (xv) Liens securing reimbursement obligations with respect to
letters of credit that encumber documents and other Property relating to such
letters of credit and the products and proceeds thereof; (xvi) Liens on the
escrow account for the 2007 Notes and all funds and securities therein securing
only the 2007 Notes equally and ratably and (xvii) Liens to secure any permitted
extension, renewal, refinancing or refunding (or successive extensions,
renewals, refinancings or refundings), in whole or in part, of any Indebtedness
secured by Liens referred to in the foregoing clauses (i) through (v) and (xii),
provided that such Liens do not extend to any other Property or assets and the
principal amount of the Indebtedness secured by such Liens is not increased.

      "Person" means any individual, corporation, partnership, joint venture,
trust, unincorporated organization or government or any agency or political
subdivision thereof.

      "Preferred Stock" means, with respect to any person, Capital Stock of such
Person of any class or classes (however designated) that ranks prior, as to the
payment of dividends or as to the distribution of assets upon any voluntary or
involuntary liquidation, dissolution or winding up of such Person, to shares of
Capital Stock of any other class of such Person.

      "Pro Forma EBITDA" means, for any Person, for any period, the EBITDA of
such Person as determined on a consolidated basis in accordance with GAAP
consistently applied, after giving effect to the following: (i) if, during or
after such period, such Person or any of its Subsidiaries shall have made any
Asset Sale, Pro Forma EBITDA for such Person and its Subsidiaries for such
period shall be reduced by an amount equal to the Pro Forma EBIDTA (if positive)
directly attributable to the assets which are the subject of such Asset Sale for
the period or increased by an amount equal to the Pro Forma EBITDA (if negative)
directly 
<PAGE>   41
                                                                              13


attributable thereto for such period and (ii) if, during or after such period,
such Person or any of its Subsidiaries completes an acquisition of any Person or
business which immediately after such acquisition is a Subsidiary of such
Person, Pro Forma EBITDA shall be computed so as to give pro forma effect to
such Asset Sale or the acquisition of such Person or business, as the case may
be, as if such acquisition had been completed as of the beginning of such
period, and (iii) if, during or after such period, such Person or any of its
Subsidiaries incurs any Indebtedness (including without limitation, any Acquired
Indebtedness) or issues any Disqualified Stock, Pro Forma EBITDA shall be
computed so as to give pro forma effect (including pro forma application of the
proceeds therefrom) thereto as if such Indebtedness or Disqualified Stock had
been incurred as of the beginning of such period.

      "Property" means, with respect to any Person, any interest of such Person
in any kind of property or asset, whether real, personal or mixed, or tangible
or intangible, excluding Capital Stock in any other Person.

      "Prospectus" means the prospectus included in any Registration Statement
at the time such Registration Statement becomes effective, as the same may be
amended or supplemented by any prospectus supplement or by any other amendment
thereto, including post-effective amendments, and all material incorporated by
reference or deemed to be incorporated by reference in such Prospectus.

      "Public Equity Offering" means an underwritten public offering of Capital
Stock (other than Disqualified Capital Stock) of the Corporation.

      "Qualified Stock" of any Person means a class of Capital Stock other than
Disqualified Stock.

      "Record Date" has the meaning set forth in Section 3(a) below.

      "Redemption Date" means, with respect to any shares of 12.75% Preferred
Stock, the date on which such shares of 12.75% Preferred Stock are redeemed by
the Corporation.

      "Redemption Notice" has the meaning set forth in Section 5(c)(i) below.

      "Refinancing Indebtedness" means Indebtedness issued in exchange for, or
the proceeds of which are used to refinance, repurchase, replace, refund or
defease other Indebtedness.

      "Registration Default" has the meaning set forth in Section 3(f) below.

      "Registration Rights Agreement" means the Registration Rights Agreement
dated as of the Issue Date between the Corporation and Bear, Stearns & Co., Inc.

      "Registration Statement" means a registration statement under the
Securities Act filed by the Corporation with the 
<PAGE>   42
                                                                              14


Commission pursuant to the provisions of the Registration Rights Agreement.

      "Restricted Subsidiary" means any Subsidiary of the Corporation that has
not been classified as an "Unrestricted Subsidiary."

      "Rule 144" means Rule 144 promulgated under the Securities Act, as such
Rule may be amended from time to time, or any similar rule (other than Rule144A)
or regulation hereafter adopted by the Commission providing for offers and sales
of securities made in compliance therewith resulting in offers and sales by
subsequent holders that are not affiliates of an issuer of such securities being
free of the registration and prospectus delivery requirements of the Securities
Act.

      "Rule 144A" means Rule 144A promulgated under the Securities Act, as such
Rule may be amended from time to time, or any similar rule (other than Rule144)
or regulation hereafter adopted by the Commission.

      "Sale and Leaseback Transaction" means, with respect to any Person, any
direct or indirect arrangement pursuant to which Property is sold or transferred
by such Person or a Restricted Subsidiary of such Person and is thereafter
leased back from the purchaser or transferee thereof by such Person or one of
its Restricted Subsidiaries.

      "Secured Credit Facility" means the AT&T Credit Facility as in effect on
the Issue Date and additional secured credit agreements to which the Corporation
is or becomes a party, in an aggregate amount not to exceed $35.0 million, and
all related amendments, notes, collateral documents, guarantees, instruments and
other agreements executed in connection therewith, as the same may be amended,
modified, supplemented, restated, renewed, extended, refinanced, substituted or
replaced from time to time.

      "Securities Act" means the Securities Act of 1933, as amended, and the
rules and regulations promulgated thereunder.

      "Senior Stock" has the meaning set forth in Section 2 below.

      "Shelf Registration Statement" means a Registration Statement with respect
to the offer and sale of shares of Series A 12.75% Preferred Stock by the
holders thereof.

      "Significant Restricted Subsidiary" means a Restricted Subsidiary that is
a "significant subsidiary" as defined in Rule 1-02(w) of Regulation S-X under
the Securities Act and the Exchange Act.

      "Strategic Investor" means a publicly traded company (i) whose principal
business is operating a public utility company and/or a cable and/or telephone
and/or telecommunications system in the United States or which, after the
consummation of the relevant transaction, is or will be delivering its own
services over the networks or systems of the Corporation and any business
reasonably related to the foregoing, or creating, developing or marketing
communications related network equipment, software or 
<PAGE>   43
                                                                              15


other devices for use in transmitting voice, video or data, (ii) which has, or
the Parent of which has, a Total Equity Market Capitalization in excess of $1.0
billion and (iii) whose senior unsecured debt securities are rated (or carry an
implied rating) by Moody's Investors Service, Inc. (or any successor to the
rating agency business thereof) or Standard & Poor's Corporation (or any
successor to the rating agency business thereof) as Baa- or BBB-, respectively,
or better, on a pro forma basis assuming the consummation of any transaction
with the Corporation, provided that if such securities are rated by both such
rating agencies, the lowest rating of the two shall govern for purposes of this
definition.

      "Subsidiary" means, with respect to any Person, (i) any corporation more
than 50% of the outstanding shares of Voting Stock of which is owned, directly
or indirectly, by such Person, or by one or more other Subsidiaries of such
Person, or by such Person and one or more other Subsidiaries of such Person,
(ii) any general partnership, joint venture or similar entity, more than 50% of
the outstanding partnership or similar interests in which are owned, directly or
indirectly, by such Person, or by one or more other Subsidiaries of such Person,
or by such Person and one or more other Subsidiaries of such Person and (iii)
any limited partnership of which such Person or any Subsidiary of such Person is
a general partner.

      "Subsidiary Preferred Stock" means Capital Stock of a Subsidiary of any
class or classes (however designated) that ranks prior, as to the payment of
dividends or as to the distribution of assets upon any voluntary or involuntary
liquidation, dissolution or winding up of such Subsidiary, to shares of Capital
Stock of any other class of such Subsidiary.

      "Telecommunications Business" means the business of (i) transmitting, or
providing services relating to the transmission of, voice, video or data through
owned or leased transmission facilities, (ii) creating, developing or marketing
communications-related network equipment, software and other devices for use in
(i) above or (iii) evaluating, participating or pursuing any other activity or
opportunity that is related to those specified in (i) or (ii) above.

      "Telecommunications Corporation" means any Person substantially all of the
assets of which consist of Telecommunications Related Assets.

      "Telecommunications Related Assets" means all assets, rights (contractual
or otherwise) and properties, whether tangible or intangible, used or intended
for use in connection with a Telecommunications Business.

      "Telecommunications Service Market" means a network built by the
Corporation to service a market.

      "Total Equity Market Capitalization" of any person means, as of any day of
determination, the sum of (1) the product of (A) the aggregate number of
outstanding primary shares of common stock of such person on such day (which
shall not include any options or warrants on, or securities convertible or
exchangeable into or 
<PAGE>   44
                                                                              16


exercisable for, shares of common stock of such person) multiplied by (B) the
average closing price of such common stock over the 20 consecutive trading days
immediately preceding such day, plus (ii) the liquidation value of any
outstanding shares of Preferred Stock of such person on such day.

      "Total Market Capitalization" of any person means, as of any day of
determination, the sum of (1) the consolidated Indebtedness of such Person and
its Subsidiaries on such day, plus (2) the product of (i) the aggregate number
of outstanding primary shares of common stock of such Person on such day (which
shall not include any options or warrants on, or securities convertible or
exchangeable into, shares of common stock of such Person) and (ii) the average
closing price of such common stock over the 20 consecutive trading days
immediately preceding such day, plus (3) the liquidation value of any
outstanding shares of Preferred Stock of such Person on such day, less (4) cash
and cash equivalents as presented on such Person's consolidated balance sheet on
such date. If no such closing price exists with respect to shares of such common
stock, the value of such shares for purposes of clause (2) of the preceding
sentence shall be determined by the Corporation's Board of Directors in good
faith and evidenced by a resolution of the Board of Directors.

      "Transfer Agent" means the entity designated from time to time by the
Corporation to act as the registrar and transfer agent for the 12.75% Preferred
Stock.

      "Transfer Restricted Securities" means each share of Series A Preferred
Stock until the earliest to occur of (i) the date on which such share of Series
A Preferred Stock has been exchanged by a person other than a broker-dealer
registered as such under the Exchange Act (herein, a "Broker-Dealer") for Series
B Preferred Stock in the Exchange Offer, (ii) following the exchange by a
Broker-Dealer in the Exchange offer of Series A Preferred Stock for Series B
Preferred Stock, the date on which such Series B Preferred Stock is sold to a
purchaser who receives from such Broker-Dealer on or prior to the date of such
sale a copy of the Prospectus contained in the Exchange Offer Registration
Statement, (iii) the date on which such share of Series B Preferred Stock has
been effectively registered under the Act and disposed of in accordance with the
Shelf Registration Statement or (iv) the date on which such share of Series B
Preferred Stock is distributed to the public pursuant to Rule 144 or may be
distributed to the public pursuant to paragraph (k) of Rule 144.

      "Unrestricted Subsidiary" means any Subsidiary of the Corporation that the
Corporation has classified as an "Unrestricted Subsidiary" and that has not been
reclassified as a Restricted Subsidiary, pursuant to the terms of each of the
indentures governing the Existing Notes.

      "Vendor Debt" means any purchase money Indebtedness of the Corporation or
any Subsidiary incurred in connection with the acquisition of Telecommunications
Related Assets.

      "Voting Rights Triggering Event" has the meaning set forth in Section
6(b).
<PAGE>   45
                                                                              17


      "Voting Stock" means, with respect to any Person, securities of any class
or classes of Capital Stock in such Person entitling the holders thereof
(whether at all times or at the times that such class of Capital Stock has
voting power by reason of the happening of any contingency) to vote in the
election of members of the board of directors or comparable body of such Person.

      "Weighted Average Life to Maturity" means, when applied to any
Indebtedness at any date, the number of years obtained by dividing (i) the sum
of the products obtained by multiplying (a) the amount of each then remaining
installment, sinking fund, serial maturity or other required payments of
principal, including payment at final maturity, in respect thereof, by (b) the
number of years (calculated to the nearest one-twelfth) that will elapse between
such date and the making of such payment, by (ii) the then outstanding principal
amount of such Indebtedness.

      "Wholly Owned Subsidiary" of any Person means a Subsidiary of such Person
all of the outstanding Capital Stock or other ownership interests (other than
directors' qualifying shares) of which shall at the time be owned by such Person
or by one or more Wholly Owned Subsidiaries of such Person or a combination
thereof.

            2.  Ranking

            The 12.75% Preferred Stock shall, with respect to dividend rights
and rights on the liquidation, winding-up and dissolution of the Corporation (as
provided in Sections 3 and 4 below), rank (i) senior to all classes of common
stock and to each other class of Capital Stock or series of Preferred Stock
established hereafter by the Board of Directors, the terms of which expressly
provide that it ranks junior to the 12.75% Preferred Stock as to dividend rights
and rights on the liquidation, winding-up and dissolution of the Corporation
(collectively referred to, together with the common stock of the Corporation, as
"Junior Stock"), (ii) subject to certain conditions, on a parity with each other
class of Capital Stock or series of Preferred Stock established hereafter by the
Board of Directors, the terms of which expressly provide that such class or
series ranks on a parity with the 12.75% Preferred Stock as to dividend rights
and rights on the liquidation, winding-up and dissolution of the Corporation
(collectively referred to as "Parity Stock") and (iii) junior to the 14.75%
Preferred Stock and any future class of preferred stock established hereafter by
the Board of Directors with the affirmative vote or consent of the Holders of at
least two-thirds of the outstanding shares of the 12.75% Preferred Stock, voting
or consenting as a single class, the terms of which expressly provide that such
class ranks senior to the 12.75% Preferred Stock as to dividend rights and
rights on liquidation, winding-up and dissolution of the Corporation
(collectively referred to as the "Senior Stock").

            3.  Dividends

            (a) Beginning on the Issue Date, the Holders of the outstanding
shares of the 12.75% Preferred Stock shall be entitled to receive, when, as and
if declared by the Board of Directors of the Corporation out of funds legally
available therefor, 
<PAGE>   46
                                                                              18


cumulative dividends thereon accruing at the rate per annum of 12.75% (subject
to adjustment as provided in Section 7(h), below) of the Liquidation Preference
thereof, payable quarterly (each such quarterly period being herein called a
"Dividend Period") in arrears on each January 15, April 15, July 15 and October
15 or, if any such date is not a Business Day, on the next succeeding Business
Day (each, a "Dividend Payment Date"), to the Holders of record as of the next
preceding January 1, April 1, July 1 and October 1 immediately preceding the
relevant Dividend Payment Date (each, a "Record Date"). The first Dividend
Payment Date shall be, January 15, 1998.

              (b) Dividends may be paid, at the Corporation's option, on any
Dividend Payment Date either in cash or by the issuance of additional shares of
12.75% Preferred Stock (and, at the Corporation's option, payment of cash in
lieu of fractional shares) having an aggregate Liquidation Preference (including
any fractional shares) equal to the amount of such dividends; provided, however,
that after October 15, 2002, to the extent and for so long as the Corporation is
not precluded from paying cash dividends on the 12.75% Preferred Stock by the
terms of any agreement or instrument governing any of its then outstanding
indebtedness, the Corporation shall pay dividends in cash. The issuance of such
additional shares of 12.75% Preferred Stock shall constitute "payment" of the
related dividend for all purposes of this Certificate of Designation.

              (c) Dividends on the 12.75% Preferred Stock shall accrue whether
or not the Corporation has earnings or profits, whether or not there are funds
legally available for the payment of such dividends and whether or not dividends
are declared. To the extent that dividends are not paid on the Dividend Payment
Date for the period to which they relate, dividends shall accrue and cumulate
thereon from and after such Dividend Payment Date. In the event that (i)
dividends on the 12.75% Preferred Stock are in arrears and unpaid for six or
more Dividend Periods (whether or not consecutive), whether before or after
October 15, 2002, or (ii) the Corporation shall fail to pay dividends in cash
for six or more Dividend Periods (whether or not consecutive) beginning after
October 15, 2002, Holders of the 12.75% Preferred Stock shall be entitled to
certain voting rights as provided in Section 6(b) below. The Corporation shall
take all actions required or permitted under the DGCL to permit the payment of
dividends on the 12.75% Preferred Stock, including, without limitation, through
the revaluation of its assets in accordance with the DGCL, to make or keep funds
legally available for the payment of dividends. Dividends payable on the 12.75%
Preferred Stock shall be computed on the basis of a 360-day year consisting of
twelve 30-day months and shall be deemed to accumulate on a daily basis.
Additional Dividends, to the extent payable as provided in Section 3(g) below,
shall be computed on the same basis.

              (d) Nothing herein contained shall in any way or under any 
circumstances be construed or deemed to require the Board of Directors to 
declare, or the Corporation to pay or set apart for payment, any dividends on 
shares of the 12.75% Preferred Stock at any time.
<PAGE>   47
                                                                              19


              (e) Dividends on account of arrears for any past Dividend Period
and dividends in connection with any optional redemption pursuant to Section
5(a) may be declared and paid at any time, without reference to any regular
Dividend Payment Date, to Holders of record on such date, not more than
forty-five (45) days prior to the payment thereof, as may be fixed by the Board
of Directors.

              (f) No dividend whatsoever shall be declared or paid upon, or any
sum set apart for the payment of dividends upon, any outstanding share of the
12.75% Preferred Stock with respect to any Dividend Period unless all dividends
on all outstanding shares of Senior Stock for all preceding dividend periods in
respect of such Senior Stock have been declared and paid, or declared and a
sufficient sum set apart for the payment thereof. No full dividends (other than
a dividend payable solely in shares of additional Parity Stock) may be declared
or paid or funds set apart for the payment of dividends on any Parity Stock for
any period unless full cumulative dividends shall have been or contemporaneously
are declared and paid (or are deemed declared and paid) in full or declared and,
if payable in cash, a sum in cash sufficient for such payment set apart for such
payment on the 12.75% Preferred Stock. If full cumulative dividends are not so
declared and paid, the 12.75% Preferred Stock shall share dividends pro rata
with the Parity Stock so long as any 12.75% Preferred Stock is outstanding. So
long as any 12.75% Preferred Stock is outstanding and unless and until full
cumulative dividends have been declared and paid (or deemed paid) in full on the
12.75% Preferred Stock, (i) no dividend (other than a dividend payable solely in
shares of additional Junior Stock) shall be declared or paid upon, or any sum
set apart for the payment of dividends upon, any shares of Junior Stock, (ii) no
other distribution shall be declared or made upon, or any sum set apart for the
payment of any distribution upon, any shares of Junior Stock, other than a
distribution consisting solely of Junior Stock, (iii) no shares of Parity Stock
or Junior Stock or warrants, rights, calls or options to purchase such Parity
Stock or Junior Stock shall be purchased, redeemed or otherwise acquired or
retired for value (excluding an exchange for shares of Junior Stock) by the
Corporation or any of its Subsidiaries, other than certain repurchase
obligations with respect to such warrants, rights, calls or options in existence
on the Issue Date; and (iv) no monies shall be paid into or set apart or made
available for a sinking or other like fund for the purchase, redemption or other
acquisition or retirement for value of any shares of Parity Stock or Junior
Stock by the Corporation or any of its Subsidiaries. Holders of the 12.75%
Preferred Stock shall not be entitled to any dividends, whether payable in cash,
property or stock, in excess of the full cumulative dividends as herein
described.

              (g) If the Corporation fails to file an Exchange Offer
Registration Statement within 45 days after the Issue Date, or the Corporation
fails to file a Shelf Registration Statement on or prior to 90 days after the
Issue Date, (ii) any Shelf Registration Statement is not declared effective by
the Commission on or prior to the Effectiveness Target Date, (iii) the
Corporation fails to consummate the Exchange Offer within 30 Business Days
following the Effectiveness Target Date with respect to the Exchange Offer
Registration Statement or (iv) the Shelf Registration Statement or 
<PAGE>   48
                                                                              20


the Exchange Offer Registration Statement is declared effective on or prior to
the applicable Effectiveness Target Date, but thereafter shall cease to be
effective or usable in connection with resales of Transfer Restricted Securities
(each such event referred to in clauses (i), (ii), (iii) and (iv) above, a
"Registration Default"), then additional dividends (the "Additional Dividends")
shall accrue and cumulate on the 12.75% Preferred Stock from and including the
date on which any Registration Default shall occur to but excluding the date on
which all Registration Defaults have been cured (as provided below) at a rate
per annum of 0.25% of the Liquidation Preference thereof for each 90-day period
that such Registration Default continues, provided that said rate shall in no
event exceed 1.0% per annum. Additional Dividends shall be paid, either in cash
or, at the Corporation's option, by the issuance of additional shares of 12.75%
Preferred Stock, on each regular quarterly Dividend Payment Date following the
occurrence of such Registration Default through the Dividend Payment Date next
following the date when such Registration Default shall have been cured.
Following the cure of all Registration Defaults, the accrual of Additional
Dividends on the 12.75% Preferred Stock shall cease.

            4.  Liquidation Preference

            Upon any voluntary or involuntary liquidation, dissolution or
winding-up of the Corporation, each Holder of shares of the 12.75% Preferred
Stock then outstanding shall be entitled to be paid out of the assets of the
Corporation available for distribution to its stockholders, after payment to the
holders of any then outstanding Senior Stock (including, without limitation, the
14.75% Preferred Stock) an amount equal to the Liquidation Preference per share
of 12.75% Preferred Stock held by such Holder plus, without duplication, an
amount in cash equal to all accrued and unpaid dividends thereon to the date
fixed for liquidation, dissolution or winding-up (including an amount equal to a
prorated dividend for the period from the last Dividend Payment Date to the date
fixed for liquidation, dissolution or winding-up and including an amount equal
to the redemption premium that would have been payable had the 12.75% Preferred
Stock been the subject of an optional redemption on such date), and Additional
Dividends, if any, to the date fixed for liquidation, dissolution or winding-up
of the Corporation before any distribution is made on any Junior Stock
(including, without limitation, common stock of the Corporation). If, upon any
voluntary or involuntary liquidation, dissolution or winding-up of the
Corporation, the assets of the Corporation available for distribution to its
stockholders, after payment of all amounts required to be paid to the holders of
any then outstanding Senior Stock, are not sufficient to pay in full all amounts
payable to the holders of outstanding shares of 12.75% Preferred Stock and all
other Parity Stock, the Holders of the 12.75% Preferred Stock and the Parity
Stock shall share equally and ratably in any distribution of assets of the
Corporation in proportion to the full liquidation preference and accrued and
unpaid dividends (including, in the case of the Holders of the 12.75% Preferred
Stock, Additional Dividends, if
<PAGE>   49
                                                                              21


any) to which each is entitled. After payment of the full amount of the
Liquidation Preference and accrued and unpaid dividends (including Additional
Dividends, if any) to which they are entitled, the Holders of the 12.75%
Preferred Stock will not be entitled to any further participation in any
distribution of assets of the Corporation. However, neither the voluntary sale,
conveyance, exchange or transfer (for cash, shares of stock, securities or other
consideration) of all or substantially all of the Property or assets of the
Corporation nor the consolidation or merger of the Corporation with or into one
or more other entities, shall be deemed to be a voluntary or involuntary
liquidation, dissolution or winding-up of the Corporation or reduction or
decrease in capital stock, unless such sale, conveyance, exchange or transfer
shall be in connection with a liquidation, dissolution or winding up of the
business of the Corporation or reduction or decrease in its capital stock.

               5.  Redemption.

               (a) Optional Redemption. (i) The Corporation may, at the option 
of the Board of Directors, at any time on or after October 15, 2003, subject to
the legal availability of funds therefor, redeem, in whole or in part, in the 
manner provided for in Section (5)(c) below, shares of the 12.75% Preferred 
Stock, at the redemption prices (expressed as percentages of the Liquidation 
Preference thereof) plus, without duplication, an amount in cash equal to all 
accrued and unpaid dividends thereon to the Redemption Date (including an 
amount in cash equal to a prorated dividend for the period from the Dividend 
Payment Date immediately prior to the Redemption Date to the Redemption Date), 
if redeemed during the 12-month period beginning October 15 of each of the 
years set forth below:

<TABLE>
            <S>                   <C>
            2003                  106.375%
            2004                  104.781%
            2005                  103.188%
            2006                  101.594%
            2007 and thereafter   100.000%
</TABLE>

               (ii) Notwithstanding the foregoing paragraph (i) of this Section
(5)(a), the Corporation will have the option, on or prior to October 15, 2000,
to redeem, in the manner provided for in Section 5(c) below, up to 35% of the
outstanding shares of 12.75% Preferred Stock at a redemption price of 112.750%
of the Liquidation Preference thereof, plus, without duplication, an amount in
cash equal to all accrued and unpaid dividends thereon to the Redemption Date,
with the proceeds of (1) one or more Public Equity Offerings generating cash
proceeds to the Corporation of at least $25 million or (2) the sale of Qualified
Stock generating cash proceeds to the Corporation of at least $25 million to a
corporation which has, or whose Parent has, a Total Equity Market Capitalization
at the time of such sale of at least $1.0 billion on a consolidated basis;
provided that shares of 12.75% Preferred Stock equal to at least 65% of the
number of shares of the 12.75% Preferred Stock initially issued on the Issue
Date remain outstanding after any such redemption.

               (b) Mandatory Redemption. On October 15, 2009, the Corporation
shall redeem (subject to the legal availability of funds therefor) in the manner
provided for in Section (5)(c) below, all of the shares of the 12.75% Preferred
Stock then 
<PAGE>   50
                                                                              22


outstanding at a redemption price equal to 100% of the Liquidation Preference
thereof, plus, without duplication, an amount in cash equal to all accumulated
and unpaid dividends thereon to the Redemption Date (including the dividend
payable on the Redemption Date).

               (c) Procedures for Redemption. (i) At least 30 days and not more
than 60 days prior to any Redemption Date, the Corporation shall send written
notice (the "Redemption Notice") by first class mail, postage prepaid, to each
Holder of record of the 12.75% Preferred Stock on the record date fixed for such
redemption at such Holder's address as it appears on the stock books of the
Corporation, provided that no failure to give such notice nor any deficiency
therein shall affect the validity of the procedure for the redemption of any
shares of 12.75% Preferred Stock to be redeemed except as to the Holder or
Holders to whom the Corporation has failed to give said notice or except as to
the Holder or Holders whose notice was finally judicially determined by a court
of competent jurisdiction to be defective. The Redemption Notice shall state:

                  (A) whether the redemption is pursuant to Section (5)(a)(i),
            (5)(a)(ii), or (5)(b) hereof;

                  (B) the redemption price;

                  (C) whether all or (in the case of a redemption pursuant to
            Section (5)(a)(i) or (5)(a)(ii) hereof) less than all the
            outstanding shares of the 12.75% Preferred Stock are to be redeemed
            and the total number of shares of the 12.75% Preferred Stock to be
            redeemed;

                  (D) the Redemption Date;

                  (E) that the Holder is to surrender to the Corporation, at the
            offices of the Transfer Agent and in the manner and at the price
            designated, his certificate or certificates representing the shares
            of 12.75% Preferred Stock to be redeemed; and

                  (F) that dividends on the shares of the 12.75% Preferred Stock
            redeemed shall cease to accumulate on such Redemption Date unless
            the Corporation defaults in the payment of the redemption price
            therefor.

            (ii) Each Holder of 12.75% Preferred Stock called for redemption
      shall surrender the certificate or certificates representing such shares
      of 12.75% Preferred Stock to the Corporation, duly endorsed (or otherwise
      in proper form for transfer, as determined by the Corporation), at the
      office of the Transfer Agent and in the manner designated in the
      Redemption Notice, and on the Redemption Date the full redemption price
      for such shares shall be payable in cash to the Person whose name appears
      on such certificate or certificates as the owner thereof, and each
      surrendered certificate shall be canceled and retired. In the event that
      less than all of the shares represented by any such 
<PAGE>   51
                                                                              23


      certificate are redeemed, a new certificate shall be issued representing
      the unredeemed shares.

            (iii) On and after the Redemption Date, unless the Corporation
      defaults in the payment in full of the applicable redemption price,
      dividends on the 12.75% Preferred Stock called for redemption shall cease
      to accumulate, and all rights of the Holders of such shares shall
      terminate with respect thereto on the Redemption Date, other than the
      right to receive the redemption price therefor, without interest;
      provided, however, that if a Redemption Notice shall have been given as
      provided in Section (5)(c)(i) above and the funds necessary for redemption
      (including an amount in respect of all dividends on the shares to be
      redeemed that will accumulate to the Redemption Date) shall have been
      delivered to the Transfer Agent, in trust for the equal and ratable
      benefit of the Holders of the shares to be redeemed, then dividends shall
      cease to accrue and cumulate on the Redemption Date of the shares to be
      redeemed and, at the close of business on the day on which such funds are
      delivered to the Transfer Agent, the Holders of the shares to be redeemed
      shall cease to be stockholders of the Corporation and shall be entitled
      only to receive the redemption price for such shares, without interest.

            (iv) In the event of a redemption of only a portion of the then
      outstanding shares of the 12.75% Preferred Stock pursuant to Section
      5(a)(i) or 5(a)(ii) hereof, the Corporation shall effect such redemption
      on a pro rata basis according to the number of shares held by each Holder
      of the 12.75% Preferred Stock, except that the Corporation may redeem such
      shares held by Holders of fewer than 10 shares (or shares held by Holders
      who would hold less than 10 shares as a result of such redemption) on such
      basis as may be determined by the Corporation.

            6. Voting Rights; Amendment; Waiver

           (a) The Holders of record of shares of the 12.75% Preferred Stock,
except as otherwise required under Delaware law or as set forth in Sections
6(b), (c) and (d) below, shall not be entitled or permitted to vote on any
matter required or permitted to be voted on by the stockholders of the
Corporation.

           (b) If the Corporation fails to pay cash dividends on the
outstanding 12.75% Preferred Stock for six or more Dividend Periods (whether or
not consecutive) beginning after October 15, 2002, or the Corporation fails to
pay dividends, either in cash or by the issuance of additional shares of 12.75%
Preferred Stock, for six or more Dividend Periods (whether or not consecutive),
whether before or after October 15, 2002, or the Corporation fails to comply
with its obligations set forth in Section 7 hereof, or the Corporation fails to
comply with any of its other covenants set forth in this Certificate of
Designation and such failure continues for at least 30 consecutive days after
receipt by the Corporation of notice of such failure from the holders of at
least 25% of the shares of 12.75% Preferred Stock then 
<PAGE>   52
                                                                              24


outstanding, or there occurs a default under any mortgage, indenture or
instrument under which there may be issued or by which there may be secured or
evidenced any Indebtedness for money borrowed by the Corporation or any of its
Subsidiaries (or the payment of which is guaranteed by the Corporation or any of
its Subsidiaries) whether such Indebtedness or Guarantee now exists, or is
created after the Issue Date, which default (A) is caused by a failure to pay
principal of or premium, if any, or interest on such Indebtedness prior to the
expiration of the grace period provided in such Indebtedness on the date of such
default (a "Payment Default") or (B) results in the acceleration of such
Indebtedness prior to its express maturity, and, in each case, the principal
amount of any such Indebtedness, together with the principal amount of any other
such Indebtedness under which there has been a Payment Default or the maturity
of which has been so accelerated, aggregates $10.0 million or more, at any time,
in each case, after a 60-day period during which such Payment Default shall not
have been cured or such acceleration rescinded, or the Corporation fails to
redeem all of the outstanding 12.75% Preferred Stock on October 15, 2009 (each
of the events described in clauses (i), (ii), (iii), (iv), (v) and (vi) being
referred to herein as a "Voting Rights Triggering Event"), then (x) the Holders
of a majority of the then outstanding shares of 12.75% Preferred Stock, voting
as a single class, shall be entitled to elect the lesser of (i) two members of
the Board of Directors and (ii) such number of directors as will constitute and
25% of the total number of members of the Board of Directors and (y) the
Corporation shall take such action as may be necessary to cause the total number
of directors of the Corporation to be increased by such number.

               (c) The right of the Holders of 12.75% Preferred Stock, voting as
a single class, to elect members of the Board of Directors as set forth in
Section 6(b) above shall continue until such time as (x) in the event such
Voting Rights Triggering Event arises under either clause (i) or clause (ii) of
Section 6(b) above (hereafter, a "Dividend Default"), such Dividend Default is
fully cured, and (y) in the event such Voting Rights Triggering Event arises
under either clause (iii) or (iv) of Section 6(b) above, the failure giving rise
to such Voting Rights Triggering Event is remedied by the Corporation or waived
by the Holders of a majority of the shares of 12.75% Preferred Stock then
outstanding and entitled to vote thereon, and (z) in all other cases, the
failure, breach or default giving rise to such Voting Rights Triggering Event is
remedied by the Corporation or waived by the Holders of at least two-thirds of
the shares of 12.75% Preferred Stock then outstanding and entitled to vote
thereon, at which time (1) the special right of the Holders of 12.75% Preferred
Stock so to vote as a class for the election of directors and (2)the term of
office of the directors elected by the Holders of the 12.75% Preferred Stock
shall each terminate. At any time after voting power to elect directors shall
have become vested and be continuing in the Holders of 12.75% Preferred Stock
pursuant to Section 6(b) above, or if vacancies shall exist in the offices of
directors elected by the Holders of 12.75% Preferred Stock, a proper officer of
the Corporation may, and upon the written request of the Holders of record of at
least 25% of the shares of 12.75% Preferred Stock then outstanding addressed to
the Secretary of the Corporation at its principal executive offices shall, call
<PAGE>   53
                                                                              25


a special meeting of the Holders of 12.75% Preferred Stock, for the purpose of
electing the directors that such Holders are entitled to elect. If such meeting
shall not be called by a proper officer of the Corporation within 20 days after
personal service of said written request upon the Secretary of the Corporation
at its principal executive offices, or within 20 days after mailing the same
within the United States by certified mail, return receipt requested, addressed
to the Secretary of the Corporation at its principal executive offices, then the
Holders of record of at least 25% of the outstanding shares of 12.75% Preferred
Stock may designate in writing one of their number to call such meeting at the
expense of the Corporation, and such meeting may be called by the Person so
designated upon the same period of notice as is required for the annual meetings
of stockholders of the Corporation and shall be held at the place designated in
such notice. Any Holder of 12.75% Preferred Stock so designated shall have, and
the Corporation shall provide, access to the list of Holders of the 12.75%
Preferred Stock for the purposes of calling a meeting of such Holders pursuant
to the provisions hereof. The voting rights provided for in this Section 7 shall
be the exclusive remedy at law or in equity of the holders of the 12.75%
Preferred Stock for any violation by the Corporation of its obligations under
this Certificate of Designation.

               (d) At any meeting held for the purpose of electing directors at
which the Holders of the 12.75% Preferred Stock shall have the right, voting
together as a separate class, to elect directors as aforesaid, the presence in
person or by proxy of the Holders of at least a majority of the outstanding
shares of 12.75% Preferred Stock shall be required to constitute a quorum of
such 12.75% Preferred Stock.

               (e) Any vacancy occurring in the office of a director elected by
the Holders of 12.75% Preferred Stock may be filled by the remaining director
elected by the Holders of 12.75% Preferred Stock unless and until such vacancy
shall be filled by the Holders of 12.75% Preferred Stock. Holders of a majority
of the 12.75% Preferred Stock, voting separately as a class, may remove, with or
without cause, any director elected by the Holders of 12.75% Preferred Stock or
appointed to fill a vacancy pursuant to the next preceding sentence. Any
director to be elected by the Holders of 12.75% Preferred Stock shall agree,
prior to his election to office, to resign upon any termination of the right of
the Holders of 12.75% Preferred Stock to vote as a class for a director as
herein provided, and upon any such termination any director then in office
elected by the Holders of 12.75% Preferred Stock shall forthwith resign.

               (f) The Corporation may, with the affirmative vote or consent of
the Holders of a majority of the shares of 12.75% Preferred Stock then
outstanding, voting or consenting as a single class, modify or amend the
provisions of Section 7 or 8 hereof; provided that following the mailing of any
Change of Control Offer and during the pendancy of that Change of Control Offer,
no such modification or amendment may, without the consent of the holder of each
outstanding share of 12.75% Preferred Stock affected thereby, modify any Change
of Control Offer for the 12.75% Preferred Stock required under Section 7 hereof
in a manner 
<PAGE>   54
                                                                              26


materially adverse to the Holders of the outstanding 12.75% Preferred Stock.

               (g) The Corporation shall not, without the affirmative vote or
consent of the Holders of at least two-thirds of the shares of 12.75% Preferred
Stock, then outstanding, voting or consenting as a single class, (i) authorize,
create (by reclassification or otherwise) or issue any Senior Stock (other than
any shares of 14.75% Preferred Stock issued as dividends thereon, including as
Additional Dividends (as defined in the Certificate of Designation relating to
the 14.75% Preferred Stock)) or any security convertible into, exchangeable for
or evidencing the right to purchase any Senior Stock, or (ii) except as
described in Section 6(f) above amend or otherwise alter or modify its by-laws
or its Certificate of Incorporation (including this Certificate of Designation)
so as to affect adversely the powers, preferences, rights or privileges of the
Holders of the 12.75% Preferred Stock or reduce the time for any notice to which
such Holders may be entitled. For the purposes of this Section 6(g), an
amendment of the provisions of Section 7 or 8 hereof made in accordance with the
provisions of Section 6(d) hereof shall not be deemed to affect adversely the
powers, preferences, rights or privileges of the Holders of the 12.75% Preferred
Stock.

               (h) Holders of a majority of the outstanding shares of the 12.75%
Preferred Stock may waive compliance by the Corporation with the provisions of
Section 8 hereof and may waive any past default by the Corporation of its
obligations under Sections 7 and 8 hereof, except a default arising from failure
to purchase any 12.75% Preferred Stock tendered pursuant to a Change of Control
Offer.

               (i) In any case in which the Holders of 12.75% Preferred Stock 
shall be entitled to vote pursuant to this Section 6 or pursuant to Delaware 
law, each Holder of 12.75% Preferred Stock entitled to vote with respect to 
each such matter shall be entitled to one vote for each share of 12.75% 
Preferred Stock held. For the purposes of this Section 6, shares of 12.75% 
Preferred Stock held by the Corporation or any of its Affiliates shall not be 
deemed outstanding or entitled to vote.

               (j) The Corporation in its sole discretion may, without the vote
or consent of any Holders of the 12.75% Preferred Stock, amend or supplement
this Certificate of Designation:

                    (i) to cure any ambiguity, defect or inconsistency;

                   (ii) to provide for uncertificated 12.75% Preferred Stock in
      addition to or in place of certificated 12.75% Preferred Stock; or

                  (iii) to make any change that would provide any additional
      rights or benefits to the Holders of the 12.75% Preferred Stock or that
      does not adversely affect the legal rights of any such Holder under this
      Certificate of Designation.
<PAGE>   55
                                                                              27


              (k) Except as set forth in Section 6(g) above, (i) the creation,
authorization or issuance of any shares of Junior Stock, Parity Stock or Senior
Stock or (ii) the increase or decrease in the amount of authorized Capital Stock
of any class, including any Preferred Stock, shall not require the consent of
the Holders of the 12.75% Preferred Stock and shall not be deemed to affect
adversely the rights, preferences, privileges or voting rights of shares of
12.75% Preferred Stock.

              7.  Change of Control

              (a) Within 30 days following the occurrence of a Change of
Control, the Corporation shall make an offer (the "Change of Control Offer") to
each Holder of shares of 12.75% Preferred Stock to purchase all or any part of
the shares of 12.75% Preferred Stock held by such Holder at a purchase price in
cash equal to 101% of the aggregate Liquidation Preference thereof plus, without
duplication, an amount in cash equal to all accumulated and unpaid dividends
(including an amount in cash equal to a prorated dividend for any partial
Dividend Period) and Additional Dividends, if any, thereon to the date of
purchase (the "Change of Control Payment").

              (b) The Change of Control Offer shall include all instructions and
materials necessary to enable Holders to tender their shares of 12.75% Preferred
Stock.

              (c) The Corporation shall comply with the requirements of Rule
14e-1 under the Exchange Act and any other securities laws and regulations
thereunder to the extent such laws and regulations are applicable in connection
with the repurchase of the 12.75% Preferred Stock as a result of a Change of
Control.

              (d) Within 30 days following any Change of Control, the
Corporation shall mail a notice to each Holder stating:

                    (i) that the Change of Control Offer is being made pursuant
      to this Section 7 and that all shares of 12.75% Preferred Stock tendered
      will be accepted for payment;

                   (ii) the purchase price and the purchase date, which shall be
      no earlier than 30 days nor later than 40 days from the date such notice
      is mailed (the "Change of Control Payment Date");

                  (iii) that any shares of 12.75% Preferred Stock not tendered
      for purchase will continue to accrue dividends;

                   (iv) that, unless the Corporation fails to pay the Change of
      Control Payment, all shares of 12.75% Preferred Stock accepted for payment
      pursuant to the Change of Control Offer shall cease to accumulate
      dividends after the Change of Control Payment Date;

                    (v) that Holders electing to have any shares of 12.75%
      Preferred Stock purchased pursuant to a Change of Control Offer will be
      required to surrender such shares of 12.75% Preferred Stock, with the form
      entitled "Option of 
<PAGE>   56
                                                                              28


      Holder to Elect Purchase" which shall be included with the notice of such
      Change of Control Offer completed, to the Paying Agent named in such
      notice at its address specified in such notice prior to the close of
      business on the third Business Day preceding the Change of Control Payment
      Date;

                   (vi) that a Holder will be entitled to withdraw his or its
      election to have shares of 12.75% Preferred Stock purchased pursuant to a
      Change of Control Offer if the Paying Agent receives, not later than the
      close of business on the second Business Day preceding the Change of
      Control Payment Date, a telegram, telex, facsimile transmission or letter
      setting forth the name of the Holder, the number of shares of 12.75%
      Preferred Stock delivered for purchase, and a statement that such Holder
      is withdrawing his or its election to have such shares purchased; and

                  (vii) the circumstances and relevant facts regarding such
      Change of Control (including, but not limited to, pro forma historical
      financial information of the Corporation after giving effect to such
      Change of Control and information regarding the Person or Persons
      acquiring control).

             (e) On the Change of Control Payment Date, the Corporation shall,
to the extent lawful, (i) accept for payment all shares of 12.75% Preferred
Stock or portions thereof properly tendered and not withdrawn pursuant to the
Change of Control Offer, (ii) deposit with the Paying Agent an amount equal to
the Change of Control Payment in respect of all shares of 12.75% Preferred Stock
or portions thereof so tendered and (iii) deliver or cause to be delivered to
the Transfer Agent the shares of 12.75% Preferred Stock so accepted together
with an Officers' Certificate stating the aggregate Liquidation Preference of
the shares of 12.75% Preferred Stock or portions thereof being purchased by the
Corporation. The Paying Agent shall promptly mail to each Holder of 12.75%
Preferred Stock so tendered the Change of Control Payment for such 12.75%
Preferred Stock, and the Transfer Agent shall promptly authenticate and mail (or
cause to be transferred by book entry) to each Holder a new certificate
representing the shares of 12.75% Preferred Stock equal in Liquidation
Preference to any unpurchased portion of the shares of 12.75% Preferred Stock
surrendered, if any. The Corporation shall publicly announce the results of the
Change of Control Offer on or as soon as practicable after the Change of Control
Payment Date.

             (f) The Corporation shall not be required to make a Change of
Control Offer upon a Change of Control if (i) a third party makes the Change of
Control Offer in the manner, at the times and otherwise in compliance with the
requirements set forth in this Section 8 applicable to a Change of Control Offer
made by the Corporation and purchases all shares of 12.75% Preferred Stock
validly tendered and not withdrawn under such Change of Control Offer or (ii)
the date at which such Change of Control Offer would otherwise be required to be
made is prior to the later of (x) the Stated Maturity (as defined in the
indentures relating to the Existing Notes) of the last to mature of the Existing
Notes and (y) the retirement of all of the outstanding 14.75% Preferred Stock.
<PAGE>   57
                                                                              29


              (g) If the date at which a Change of Control Offer otherwise would
be required to be made is prior to the later of (i) the Stated Maturity (as
defined in the indentures relating to the Existing Notes) of the last to mature
of the Existing Notes and (ii) the retirement of all of the outstanding 14.75%
Preferred Stock, then, in lieu of any such Change of Control Offer, Holders of
two-thirds of the 12.75% Preferred Stock shall be entitled to designate an
Independent Financial Advisor to determine, within 20 days of such designation,
in the opinion of such firm, the appropriate dividend rate that the 12.75%
Preferred Stock should bear so that, after such reset, the 12.75% Preferred
Stock would have a market value of 101% of the Liquidation Preference. If, for
any reason and within five days of the designation of an Independent Financial
Advisor by the Holders, such Independent Financial Advisor is unacceptable to
the Corporation, the Corporation shall designate a second Independent Financial
Advisor to determine, within 15 days of such designation, in its opinion, such
an appropriate reset dividend rate for the 12.75% Preferred Stock. In the event
that the two Independent Financial Advisors cannot agree, within 25 days of the
designation of an Independent Financial Advisor by the Holders of two-thirds of
the 12.75% Preferred Stock, on the appropriate reset dividend rate, the two
Independent Financial Advisors shall, within 10 days of such 25th day, designate
a third Independent Financial Advisor, which, within 15days of designation, will
determine, in its opinion, such an appropriate reset rate which is between the
two rates selected by the first two Independent Financial Advisors; provided,
however, that the reset rate shall in no event be less than 12.75% per annum or
greater than 15.75% per annum. The reasonable fees and expenses, including
reasonable fees and expenses of legal counsel, if any, and customary
indemnification, of each of the three above-referenced Independent Financial
Advisors shall be borne by the Corporation. Upon the determination of the reset
rate, the 12.75% Preferred Stock shall accrue and cumulate dividends at the
reset rate retroactive to and as of the date of occurrence of the Change of
Control.

              8.  Certain Covenants

              (a) Incurrence of Indebtedness and Issuance of Disqualified Stock
or Preferred Stock. (i) The Corporation shall not, and shall not permit any of 
its Subsidiaries to, directly or indirectly, create, incur, issue, assume, 
guarantee or otherwise become directly or indirectly liable, contingently or 
otherwise, for the payment of (collectively, "incur" and correlatively, 
"incurred" and "incurrence") any Indebtedness (including, without limitation, 
Acquired Indebtedness) and shall not issue any Disqualified Stock and shall not
permit any of its Subsidiaries to issue any shares of Subsidiary Preferred 
Stock; provided that the Corporation may incur Indebtedness (including, without
limitation, Acquired Indebtedness) or issue shares of Disqualified Stock or
Subsidiary Preferred Stock if the Corporation's Consolidated Leverage Ratio as
of the last day of the Corporation's most recently ended fiscal quarter for
which internal financial statements are available immediately preceding the date
on which such Indebtedness is incurred, or such Disqualified Stock or Subsidiary
Preferred Stock is issued, as the case may be, would have been (a) greater than
zero and less than 5.5 to 1.0, if such
<PAGE>   58
                                                                              30


incurrence or issuance is on or prior to December 31, 1999, and (b) greater than
zero and less than 5.0 to 1.0, if such incurrence or issuance is after December
31, 1999, in each case determined on a pro forma basis (including a pro forma
application of the net proceeds therefrom), as if the additional Indebtedness
had been incurred, or the Disqualified Stock or Subsidiary Preferred Stock had
been issued, as the case may be, at the beginning of such fiscal quarter.

                  (ii) The provisions of Section 8(a)(i) shall not apply to:

                        (A) the incurrence of Indebtedness by the Corporation or
            any Subsidiary pursuant to Credit Agreement(s); provided that the
            aggregate principal amount of Indebtedness under such Credit
            Agreement(s) at any one time outstanding under this clause (A) does
            not exceed $100.0 million for the Corporation and all of its
            Subsidiaries combined;

                        (B) Existing Indebtedness (including all amounts that
            accrue thereon);

                        (C) the incurrence of Vendor Debt by the Corporation or
            any Subsidiary; provided that the aggregate principal amount of such
            Vendor Debt does not exceed 80% of the purchase price or cost of the
            construction, acquisition or improvement of the applicable
            Telecommunications Related Assets financed therewith (or 100% of the
            total cost of the Telecommunications Related Assets financed
            therewith if such Vendor Debt was extended for the purchase of
            tangible physical assets and was so financed by the vendor thereof
            or an affiliate of such vendor);

                        (D) the incurrence by the Corporation or any of its
            Restricted Subsidiaries of Refinancing Indebtedness with respect to
            Indebtedness permitted pursuant to clause (B) of this paragraph;

                        (E) the incurrence of Indebtedness by the Corporation
            not to exceed, at any one time outstanding, 2.0 times the sum of (1)
            the net cash proceeds received by the Corporation from the issuance
            and sale of the 12.75% Preferred Stock and the issuance and sale of
            any other class or series of its Capital Stock (other than
            Disqualified Stock) from and after September 30, 1997 plus (2) the
            fair market value at the time of issuance of Capital Stock (other
            than Disqualified Stock) issued in connection with any acquisition
            of a Telecommunications Corporation, in each case to a Person other
            than a Subsidiary of the Corporation; and

                        (F) the incurrence by the Corporation of Indebtedness
            (in addition to Indebtedness permitted by any other clause of this
            paragraph) in an aggregate principal amount (or accreted value, as
            applicable) at any time outstanding not to exceed $100.0 million;
<PAGE>   59
                                                                              31


            (iii) If an item of Indebtedness is permitted to be incurred or an
item of Disqualified Stock or Subsidiary Preferred Stock is permitted to be
issued on the basis of one or more of clauses (A) through (F) of Section
8(a)(ii) above, or is permitted to be incurred on the basis of Section 8(a)(i)
above, then the Corporation shall, in its sole discretion, classify such item in
any manner that complies with Section 8(a) and such item shall be treated as
having been incurred pursuant to only one of such clauses of Section 8(a)(ii) or
pursuant to Section 8(a)(i). Accrual of interest or dividends, the accretion of
accreted value or liquidation preference and the payment of interest or
dividends in the form of additional Indebtedness or shares of Capital Stock
shall not be deemed to be an incurrence of Indebtedness for purposes of this
Section 8(a).

            (iv) For purposes of this Section 8(a), in the event that the
Corporation proposes to incur Indebtedness pursuant to Section 8(a)(ii)(E)
hereof, the Corporation shall, simultaneously with the incurrence of such
Indebtedness, deliver to the Transfer Agent a resolution of the Board of
Directors set forth in an Officer's Certificate stating that the sale or sales
of Capital Stock forming the basis for the incurrence of such Indebtedness (i)
constitutes an investment in the Corporation and (ii) has not been made for the
purpose of circumventing Section 8(a) hereof. In the event that the Corporation
rescinds, reverses or unwinds such sale of Capital Stock or otherwise returns or
refunds all or any portion of the net cash proceeds of such sale of Capital
Stock (whether by dividend, distribution or otherwise) within 270 days of the
date of the incurrence of such Indebtedness, such Indebtedness shall be deemed
to be incurred on the date of, and immediately after giving effect to, such
recession, reversal, unwinding, return or refund.

            (b) Merger, Consolidation or Sale of Assets. The Corporation shall
not in any transaction or series of transactions consolidate with, or merge with
or into any other Person (other than a merger of a Restricted Subsidiary into
the Corporation in which the Corporation is the continuing corporation), or
sell, assign, transfer, lease, convey or otherwise dispose of all or
substantially all of the Property or assets of the Corporation and the
Restricted Subsidiaries taken as a whole, to any other Person unless:

                  (i) either (A) the Corporation is the continuing corporation
      or (B) the corporation (if other than the Corporation) formed by such
      consolidation or into which the Corporation is merged, or the Person which
      acquires, by sale, assignment, transfer, lease, conveyance or other
      disposition, all or substantially all of the Property and assets of the
      Corporation and the Restricted Subsidiaries taken as a whole (such
      corporation or Person, the "Surviving Entity"), shall be a corporation
      organized and validly existing under the laws of the United States of
      America, any political subdivision thereof, any state thereof or the
      District of Columbia and the 12.75% Preferred Stock shall be converted
      into or exchanged for, and shall become shares of, such Surviving Entity
      successor, transferee or resulting Person, having in respect of such
      Surviving Entity the same powers, 
<PAGE>   60
                                                                              32


      preferences and relative participating, optional or other special rights
      and qualifications, limitations or restrictions thereon, that the 12.75%
      Preferred Stock had with respect to the Corporation immediately prior to
      such transaction;

                  (ii) immediately after giving effect to such transaction or
      series of related transactions on a pro forma basis (including without
      limitation, any Indebtedness incurred or anticipated to be incurred in
      connection with or in respect of such transaction or series of related
      transactions) no Voting Rights Triggering Event shall have occurred or
      result therefrom; and

                  (iii) immediately after giving effect to such transaction or
      series of related transactions on a pro forma basis (including, without
      limitation, any Indebtedness incurred or anticipated to be incurred in
      connection with or in respect of such transaction or series of related
      transactions), the Corporation (or the Surviving Entity, if the
      Corporation is not continuing) would (A) be permitted to incur at least
      $1.00 of additional Indebtedness pursuant to Section 8(a)(i) hereof or (B)
      have a Total Equity Market Capitalization of at least $1.0 billion and
      total Indebtedness, net of cash and Cash Equivalents (as presented on the
      Corporation's consolidated balance sheet), in an amount less than 40% of
      its Total Market Capitalization.

            (c) Dividend and Other Payment Restrictions Affecting Subsidiaries.
The Corporation shall not, and shall not permit any of its Restricted
Subsidiaries to, directly or indirectly, create or otherwise cause or suffer to
exist or become effective any encumbrance or restriction on the ability of any
Restricted Subsidiary to:

            (i) (x) pay dividends or make any other distributions to the
Corporation or any of its Restricted Subsidiaries on its Capital Stock or (y)
pay any Indebtedness owed to the Corporation or any of its Restricted
Subsidiaries;

           (ii) make loans or advances to the Corporation or any of its
Restricted Subsidiaries;

          (iii) transfer any of its properties or assets to the Corporation or
any of its Restricted Subsidiaries,except for such encumbrances or restrictions
existing under or by reason of:

        (1) Existing Indebtedness as in effect on the Issue Date;

        (2) any Credit Agreement creating or evidencing Indebtedness permitted
            by Section 8(a)(ii)(A) and any amendments, modifications,
            restatements, renewals, increases, supplements, refundings,
            replacements or refinancings thereof;

        (3) any encumbrance or restriction pursuant to an agreement relating to
            an acquisition of assets or Property, so long as the encumbrances or
            restrictions in any 
<PAGE>   61
                                                                              33


            agreement relate solely to the assets or Property so acquired;

        (4) this Certificate of Designation, the Series A 12.7% Preferred Stock,
            or the Series B 12.75% Preferred Stock;

        (5) applicable law;

        (6) customary provisions restricting subletting or assignment of any
            lease of the Corporation or any Restricted Subsidiary or customary
            provisions in certain agreements that restrict the assignment of
            such agreement or any rights thereunder;

        (7) purchase money obligations or Vendor Debt for property acquired in
            the ordinary course of business that impose restrictions of the
            nature described in Section 8(c)(iii) on the property so acquired;

        (8) any encumbrance or restriction relating to any Indebtedness of any
            Restricted Subsidiary existing on the date on which such Restricted
            Subsidiary is acquired by the Corporation or any Restricted
            Subsidiary (other than Indebtedness issued by such Restricted
            Subsidiary in connection with or in anticipation of its
            acquisition);

        (9) any temporary encumbrance or restriction with respect to a
            Restricted Subsidiary pursuant to an agreement that has been entered
            into for the sale or disposition of all or substantially all of the
            Capital Stock of, or Property and assets of, such Restricted
            Subsidiary;

       (10) any restriction on the sale or other disposition of assets or
            Property securing Indebtedness as a result of a Permitted Lien on
            such assets or Property; and

       (11) Refinancing Indebtedness; provided that such encumbrances or
            restrictions are not materially more restrictive than those
            contained in the documentation governing the Indebtedness being
            extended, refinanced, renewed, replaced, defeased or refunded.

               (d) Reports. Whether or not the Corporation is subject to Section
13(a) or 15(d) of the Exchange Act, or any successor provision thereto, the
Corporation shall file with the Commission the annual reports, quarterly reports
and other documents which the Corporation would have been required to file with
the Commission pursuant to such Section 13(a) or 15(d) or any successor
provision thereto if the Corporation were subject thereto, such documents to be
filed with the Commission on or prior to the respective dates (the "Required
Filing Dates") by which the Corporation would have been required to file them.
The Corporation shall also (whether or not it is required to file reports with
the Commission), within 30 days of each Required Filing Date, (i) transmit by
mail to all holders of the 12.75% Preferred Stock, as their names and addresses
appear on the records of the Transfer Agent and to any Persons that request such
<PAGE>   62
                                                                              34


reports in writing, without cost to such holders or Persons, and (ii) file with
the Transfer Agent copies of the annual reports, quarterly reports and other
documents (without exhibits) which the Corporation has filed or would have filed
with the Commission pursuant to Section 13(a) or 15(d) of the Exchange Act, any
successor provisions thereto or this covenant. In addition to the foregoing,
commencing with the unaudited information for the fiscal quarter ended September
30, 1997, the Corporation will transmit by mail to Holders of the 12.75%
Preferred Stock and file with the Transfer Agent within the same time periods as
set forth in the second next preceding sentence, unaudited information, on an
aggregate Fiber Network basis (before headquarter allocations) segmented by the
calendar year in which each such Fiber Network became operational, setting forth
the investment in plant, property and equipment to date, revenue, EBITDA, EBIT,
access lines, fiber miles, route miles, buildings connected and voice grade
equivalents; provided, however, that the Corporation shall provide such
unaudited information with respect to (i) all Fiber Networks that were initially
operational at any time prior to December 31, 1995 (all such Fiber Networks
shall be deemed to have become operational in calendar year 1995) and (ii) all
Fiber Networks that were initially operational in each succeeding calendar year
(including all or any portion of the then current year); and provided, further,
that the Corporation need no longer comply with the information requirements of
this sentence after four consecutive fiscal quarters for which the ratio of
EBITDA of the Corporation to Consolidated Interest Expense (other than dividends
or distributions with respect to preferred stock or Disqualified Stock of the
Corporation) of the Corporation is greater than 1.0 or after the occurrence of a
Change of Control. The Corporation shall not be required to file any report or
other information with the Commission if the Commission does not permit such
filing.

               (e) Remedy for Non-Compliance. The sole remedy to Holders of
12.75% Preferred Stock in the event of the Corporation's failure to comply with
any of the covenants described in this Section 8 and the continuation of such
failure to, for 30 consecutive days after receipt of written notice thereof from
the holders of 25% of the 12.75% Preferred Stock then outstanding, will be the
voting rights described in Section 6 and such breach by the Corporation will not
cause any action taken by the Corporation to be invalid or unauthorized under
its charter documents.

               9.  Officers' Certificate

           (a) Each Officers' Certificate provided for in this Certificate of
      Designation shall include:

           (b) a statement that the Officers making such certificate or
      opinion have read such covenant or condition;

                  a brief statement as to the nature and scope of the
      examination or investigation upon which the statements or opinions
      contained in such certificate or opinion are based;
<PAGE>   63
                                                                              35


             (c) a statement that, in the opinion of each such Officer, he or
      she has made such examination or investigation as is necessary to enable
      him or her to express an informed opinion as to whether or not such
      covenant or condition has been satisfied; and

             (d) a statement as to whether or not, in the opinion of each such
      Officer, such condition or covenant has been satisfied.

             10.  Payment

             (a) All amounts payable in cash with respect to the 12.75%
Preferred Stock shall be payable in United States dollars at the office or
agency of the Corporation maintained for such purpose within the City and State
of New York or, at the option of the Corporation, payment of dividends (if any)
may be made by check mailed to the Holders of the 12.75% Preferred Stock at
their respective addresses set forth in the register of Holders of 12.75%
Preferred Stock maintained by the Transfer Agent; provided that all cash
payments with respect to the Global Securities (as defined below) and shares of
12.75% Preferred Stock the Holders of which have given wire transfer
instructions to the Corporation shall be required to be made by wire transfer of
immediately available funds to the accounts specified by the Holders thereof.

             (b) Any payment on the 12.75% Preferred Stock due on any day that
is not a Business Day need not be made on such day, but may be made on the next
succeeding Business Day with the same force and effect as if made on such due
date.

             (c) The Corporation has initially appointed the Transfer Agent to
act as the "Paying Agent." The Corporation may at any time terminate the
appointment of any Paying Agent and appoint additional or other Paying Agents;
provided that until the 12.75% Preferred Stock has been delivered to the
Corporation for cancellation, or moneys sufficient to pay the Liquidation
Preference of the 12.75% Preferred Stock plus, without duplication, accumulated
and unpaid dividends (including an amount in cash equal to a prorated dividend
for any partial Dividend Period) and Additional Dividends, if any, thereon shall
have been made available for payment and either paid or returned to the
Corporation as provided in this Certificate of Designation, the Corporation
shall maintain an office or agency in the Borough of Manhattan, The City of New
York for surrender of shares of 12.75% Preferred Stock for payment and exchange.

             (d) Dividends payable on the 12.75% Preferred Stock on any
redemption date or repurchase date that is a Dividend Payment Date shall be paid
to the Holders of record as of the immediately preceding Record Date.

             (e) All moneys and shares of 12.75% Preferred Stock deposited by 
the Corporation with any Paying Agent or held by the Corporation in trust for 
the payment of the Liquidation Preference and accumulated and unpaid dividends 
and Additional Dividends, if any, on the 12.75% Preferred Stock, which moneys 
and shares remain unclaimed at the end of two years after such payment has 
become
<PAGE>   64
                                                                              36


due and payable shall be repaid to the Corporation, and the Holder of the shares
of 12.75% Preferred Stock in respect of which such moneys and shares were so
deposited or held in trust shall thereafter look only to Corporation for payment
thereof.

            11.  Exclusion of Other Rights

            Except as may otherwise be required by law, the shares of 12.75%
Preferred Stock shall not have any powers, preferences and relative,
participating, optional or other special rights, other than those specifically
set forth in this Certificate of Designation (as this Certificate of Designation
may be amended from time to time) and in the Certificate of Incorporation. The
shares of 12.75% Preferred Stock shall have no preemptive or subscription
rights.

            12.  Conversion or Exchange

            The Holders of shares of 12.75% Preferred Stock shall not have any
rights hereunder to convert such shares into or exchange such shares for shares
of any other class or classes of Capital Stock of the Corporation.

            13.  Reissuance of 12.75% Preferred Stock

            Shares of 12.75% Preferred Stock that have been issued and
reacquired in any manner, including shares purchased or redeemed or exchanged,
shall (upon compliance with any applicable provisions of the laws of Delaware)
have the status of authorized but unissued shares of Preferred Stock of the
Corporation undesignated as to series and may be redesignated and reissued as
part of any series of Preferred Stock of the Corporation, including the 12.75%
Preferred Stock, provided that any issuance or reissuance of such shares as
12.75% Preferred Stock must be in compliance with the terms hereof.

            14.  Headings of Subdivisions

      The headings of the various subdivisions hereof are for convenience of
reference only and shall not affect the interpretation of any of the provisions
hereof.

            15.  Severability of Provisions

            If any powers, preferences and relative, participating, optional and
other special rights of the 12.75% Preferred Stock and the qualifications,
limitations and restrictions thereof set forth in this Certificate of
Designation (as it may be amended from time to time) is invalid, unlawful or
incapable of being enforced by reason of any rule of law or public policy, all
other powers, preferences and relative, participating, optional and other
special rights of the 12.75% Preferred Stock and the qualifications, limitations
and restrictions thereof set forth in this Certificate of Designation (as so
amended) which can be given effect without the invalid, unlawful or
unenforceable powers, preferences and relative, participating, optional and
other special rights of the 12.75% Preferred Stock and the qualifications,
limitations and restrictions thereof shall, 
<PAGE>   65
                                                                              37


nevertheless, remain in full force and effect, and no powers, preferences and
relative, participating, optional or other special rights of the 12_% Preferred
Stock and the qualifications, limitations and restrictions thereof herein set
forth shall be deemed dependent upon any other such powers, preferences and
relative, participating, optional or other special rights of 12.75% Preferred
Stock and qualifications, limitations and restrictions thereof unless so
expressed herein.

            16.  Form of 12.75% Preferred Stock

            (a) The 12.75% Preferred Stock shall initially be issued in the form
of one or more Global Securities ("Global Securities"). The Global Securities
shall be deposited on the Issue Date with, or on behalf of, The Depository Trust
Corporation (the "Depositary") and registered in the name of Cede & Co., as
nominee of the Depositary (such nominee being referred to as the "Global
Security Holder").

            (b) Shares of the Series A 12.75% Preferred Stock offered and sold
in reliance on Rule 144A shall be issued initially in the form of a Rule 144A
Global Security (the "Rule 144A Global Security"). Shares of the Series A 12.75%
Preferred Stock offered and sold in reliance on Regulation S shall be issued
initially in the form of a Regulation S Temporary Global Security (the
"Regulation S Temporary Global Security"), which shall be deposited on behalf of
the purchasers with the Transfer Agent, at its New York office, as custodian for
the Depositary, and registered in the name of the Depositary or the nominee of
the Depositary. Following the termination of the 40-day Restricted Period (as
defined in Rule 144A), beneficial interests in the Regulation S Temporary Global
Security shall be exchanged for beneficial interests in a Regulation S Permanent
Global Security pursuant to the applicable procedures of the Depositary.

            (c) So long as the Global Security Holder is the registered owner of
any 12.75% Preferred Stock, the Global Security Holder shall be considered the
sole Holder under this Certificate of Designation of the shares of 12.75%
Preferred Stock evidenced by the Global Security. Beneficial owners of shares of
12.75% Preferred Stock evidenced by the Global Security shall not be considered
the owners or Holders thereof under this Certificate of Designation for any
purpose.

            (d) Payments in respect of the Liquidation Preference of and
accumulated and unpaid dividends and Additional Dividends, if any, on any 12.75%
Preferred Stock registered in the name of the Global Security Holder on the
applicable record date shall be payable by the Corporation to or at the
direction of the Global Security Holder in its capacity as the registered holder
under this Certificate of Designation. The Corporation may treat the persons in
whose names 12.75% Preferred Stock, including, without limitation, the Global
Security, are registered as the owners thereof for the purpose of receiving such
payments.

            (e) Any person having a beneficial interest in a Global Security
may, upon request to the Corporation, exchange such beneficial interest for
12.75% Preferred Stock in the form of 
<PAGE>   66
                                                                              38


registered definitive certificates (the "Certificated Securities"). Upon any
such issuance, the Corporation shall register such Certificated Securities in
the name of, and cause the same to be delivered to, such person or persons (or
the nominee of any thereof). If (i) the Corporation notifies the holders in
writing that the Depositary is no longer willing or able to act as a depositary
and the Corporation is unable to locate a qualified successor within 90 days or
(ii) the Corporation, at its option, notifies the holders in writing that it
elects to cause the issuance of 12.75% Preferred Stock in the form of
Certificated Securities under this Certificate of Designation, then, upon
surrender by the Global Security Holder of its Global Security, 12.75% Preferred
Stock in such form will be issued to each person that the Global Security Holder
and the Depositary identify as being the beneficial owner of the related 12.75%
Preferred Stock.

            (f) (i) Each Global Security shall bear a legend in substantially
the following form:

      "UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR A SECURITY IN
      DEFINITIVE FORM, THIS SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY
      THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE
      DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY
      THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE
      OF SUCH SUCCESSOR DEPOSITARY. THE DEPOSITARY TRUST Corporation SHALL ACT
      AS THE DEPOSITARY UNTIL A SUCCESSOR SHALL BE APPOINTED BY THE Corporation
      AND THE TRANSFER AGENT. UNLESS THIS CERTIFICATE IS PRESENTED BY AN
      AUTHORIZED REPRESENTATIVE OF THE DEPOSITARY TRUST Corporation (55 WATER
      STREET, NEW YORK, NEW YORK) ("DTC"), TO THE ISSUER OR ITS AGENT FOR
      REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED
      IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE
      REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE
      TO CEDE & CO. OR SUCH OTHER ENTITY AS MAY BE REQUESTED BY AN AUTHORIZED
      REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE
      OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED
      OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN."

                  (ii) In addition, the Regulation S Temporary Global Security
      shall bear a legend in substantially the following form:

      "THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY GLOBAL SECURITY, AND
      THE CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR CERTIFICATED
      SECURITIES ARE AS SPECIFIED IN THE CERTIFICATE OF DESIGNATION OF THE
      POWERS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL AND OTHER
      SPECIAL RIGHTS OF PREFERRED STOCK AND QUALIFICATIONS, LIMITATIONS AND
      RESTRICTIONS THEREOF OF THE 12_% JUNIOR REDEEMABLE PREFERRED STOCK OF
      AMERICAN COMMUNICATIONS SERVICES, INC. DATED AS OF OCTOBER __, 1997.
      NEITHER THE HOLDER NOR THE BENEFICIAL OWNERS OF THIS REGULATION S
      TEMPORARY GLOBAL SECURITY SHALL BE ENTITLED TO RECEIVE CASH DIVIDEND
      PAYMENTS HEREON. NOTHING IN THIS LEGEND SHALL BE DEEMED TO PREVENT
      DIVIDENDS FROM ACCRUING AND ACCUMULATING ON THIS SECURITY."
<PAGE>   67
                                                                              39


            (g) All shares of Series A 12.75% Preferred Stock (and any Global
Securities evidencing the same) will bear a legend to the following effect,
unless the Corporation determines otherwise in compliance with applicable law:

      "THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
      AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS. NEITHER
      THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED,
      SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF
      IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT
      FROM, OR NOT SUBJECT TO, REGISTRATION."

      THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES TO (A) OFFER,
      SELL, PLEDGE OR OTHERWISE TRANSFER THIS SECURITY ONLY (1) TO THE
      Corporation, (2) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN
      DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (3) TO A PERSON IT REASONABLY
      BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" AS DEFINED IN RULE 144A, (4)
      PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE
      UNITED STATES IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 904 OF
      REGULATION S UNDER THE SECURITIES ACT, (5) TO AN INSTITUTIONAL "ACCREDITED
      INVESTOR" (AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) OF REGULATION D
      UNDER THE SECURITIES ACT) (AN "IAI") THAT, PRIOR TO SUCH TRANSFER,
      FURNISHES TO THE TRANSFER AGENT A SIGNED LETTER CONTAINING CERTAIN
      REPRESENTATIONS AND AGREEMENTS RELATING TO THE TRANSFER OF THIS SECURITY
      (THE FORM OF WHICH LETTER CAN BE OBTAINED FROM THE TRANSFER AGENT) OR (6)
      PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION
      REQUIREMENTS UNDER THE SECURITIES ACT (AND BASED ON AN OPINION OF COUNSEL
      IF THE Corporation SO REQUESTS), SUBJECT IN EACH OF THE FOREGOING CASES TO
      APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER
      APPLICABLE JURISDICTIONS AND (B) THAT IT WILL, AND EACH SUBSEQUENT HOLDER
      IS REQUIRED TO, NOTIFY ANY PURCHASER FROM IT OF THE SECURITY EVIDENCED
      HEREBY OF THE RESALE RESTRICTIONS SET FORTH IN (A) ABOVE."


<PAGE>   1

                                                                     Exhibit 5.1

July 2, 1998

e.spire Communications, Inc.
133 National Business Parkway, Suite 200
Annapolis Junction, Maryland 20701

Ladies and Gentlemen:

      You have requested our opinion with respect to the registration by e.spire
Communications, Inc., a Delaware corporation (the "Company"), pursuant to a
Registration Statement on Form S-8 (the "Registration Statement") under the
Securities Act of 1933, as amended, of an aggregate of 6,000,000 shares of the
Company's common stock, $.01 par value per share (the "Common Stock" or "Common
Shares"), issuable upon exercise of options (the "Options") to purchase Common
Stock which have been or may be granted pursuant to written option agreements
(the "Option Agreements") between the Company and officers, directors, employees
or consultants of the Company under the Company's 1994 Stock Option Plan, as
amended (the "Plan").

      In so acting, we have examined original or copies, certified or otherwise
identified to our satisfaction, of such documents, corporate records,
certificates of public officials and other instruments and have conducted such
other investigations of fact and law as we have deemed relevant and necessary to
form a basis for the opinions hereinafter expressed. In conducting such
examination, we have assumed (i) that all signatures are genuine, (ii) that all
documents and instruments submitted to us as copies conform with the originals
and (iii) the due execution and delivery of all documents where due execution
and delivery are a prerequisite to the effectiveness thereof. As to any facts
material to this opinion, we have relied upon statements and representations of
officers and other representatives of the Company and certificates of public
officials and have not independently verified such facts.

      Based upon the foregoing, it is our opinion that the Common Shares
issuable upon exercise of Options issued or issuable pursuant to the Plan will
be validly issued, fully paid and non-assessable when issued in accordance with
the Option Agreements and the Plan.

      We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement.


                                          /s/ Dorsey & Whitney LLP
                                          ------------------------------------
                                          Dorsey & Whitney LLP

<PAGE>   1

                                                                    EXHIBIT 23.1
                      

The Board of Directors
e.spire Communications, Inc.

We consent to the use of our report incorporated herein by reference.


                              KPMG Peat Marwick LLP


Washington, D.C.
July 2, 1998



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