Exhibit 4.2


                   CERTIFICATE OF DESIGNATIONS OF THE POWERS,
                    PREFERENCES AND RELATIVE, PARTICIPATING,
                 OPTIONAL AND OTHER SPECIAL RIGHTS OF 14% SENIOR
                  EXCHANGEABLE REDEEMABLE PREFERRED SHARES AND
              QUALIFICATIONS, LIMITATIONS AND RESTRICTIONS THEREOF

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                         Pursuant to Section 151 of the
                        Delaware General Corporation Law

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     New NEXTLINK Communications, Inc. (the "Corporation"), a corporation
organized and existing under the Delaware General Corporation Law, 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
(hereinafter referred to as the "Certificate of Incorporation"), and pursuant to
the provisions of Section 151 of the Delaware General Corporation Law, said
Board of Directors, on May 29, 1998, duly approved and adopted a resolution to
read as follows (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%
          Senior Exchangeable Redeemable Preferred Shares, par value $.01 per
          share, with a stated value of $50 per share, in an amount not to
          exceed 11,700,000 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
          Preferred Shares of the Corporation a class of Preferred Shares
          designated as the "14% Senior Exchangeable Redeemable Preferred
          Shares." The number of shares constituting such class shall not exceed
          11,700,000 and are referred to as the "Senior Exchangeable Redeemable
          Preferred Shares." The liquidation preference of the Senior
          Exchangeable Redeemable Preferred Shares shall be $50 per share. The
          Senior Exchangeable Redeemable Preferred Shares shall consist of the
          Original Shares and the Exchange Shares.



                                       1



          (b) Ranking.

               The Senior Exchangeable Redeemable Preferred Shares shall, with
          respect to dividends and distributions upon liquidation, winding-up
          and dissolution of the Corporation, rank (i) senior to each class of
          Capital Stock of the Corporation (including, without limitation, the
          Corporation's Class A Common Stock, par value $.02 per share and the
          Class B Common Stock, par value $.02 per share) outstanding or
          hereafter created the terms of which do not expressly provide that it
          ranks senior to, or on a parity with, the Senior Exchangeable
          Redeemable Preferred Shares as to dividends and distributions upon
          liquidation, winding-up and dissolution of the Corporation
          (collectively referred to as "Junior Shares"); (ii) on a parity with
          any class of Capital Stock of the Corporation or series of Preferred
          Shares of the Corporation hereafter created the terms of which
          expressly provide that such class or series will rank on a parity with
          the Senior Exchangeable Redeemable Preferred Shares as to dividends
          and distributions upon liquidation, winding-up and dissolution
          (collectively referred to as "Parity Shares"); provided that any such
          Parity Shares that were not issued in compliance with paragraph
          (f)(ii)(A) hereof shall be deemed to be Junior Shares and not Parity
          Shares; and (iii) junior to each class of Capital Stock of the
          Corporation or series of Preferred Shares of the Corporation hereafter
          created that has been issued in compliance with paragraph (f)(ii)(B)
          hereof and the terms of which expressly provide that such class or
          series will rank senior to the Senior Exchangeable Redeemable
          Preferred Shares as to dividends and distributions upon liquidation,
          winding-up and dissolution of the Corporation (collectively referred
          to as "Senior Shares").

          (c) Dividends.

                    (i) (A) Beginning on the Issue Date, the Holders of the
               outstanding Senior Exchangeable Redeemable Preferred Shares 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 dividends on each Senior Exchangeable Redeemable
               Preferred Share, at a rate per annum equal to 14% of the
               liquidation preference per share of the Senior Exchangeable
               Redeemable Preferred Shares, payable quarterly. No interest shall
               be payable in respect to any dividends that may be in arrears.
               All dividends shall be cumulative, whether or not earned or
               declared, on a daily basis from their date of issuance and shall
               be payable quarterly in arrears on each Dividend Payment Date,
               commencing on the first Dividend Payment Date after the Issue
               Date. Dividends may be paid at the Corporation's option on any
               Dividend Payment Date occurring on or before February 1, 2002,
               either in cash or by issuing additional fully paid and
               nonassessable Senior Exchangeable Redeemable Preferred Shares
               with an aggregate liquidation preference equal to the amount of
               such dividends. After February 1, 2002, dividends shall be paid
               only in cash. Each dividend shall be payable to the Senior
               Exchangeable Redeemable Preferred Shares held by Holders of
               record as they appear on the share books of the Corporation on
               the Dividend Record Date immediately preceding the related
               Dividend Payment Date. Dividends shall cease to accumulate in
               respect of the Senior Exchangeable Redeemable Preferred


                                       2



               Shares on the Exchange Date or on the date of their earlier
               redemption unless the Corporation shall have failed to issue the
               appropriate aggregate principal amount of Exchange Notes in
               respect of the Senior Exchangeable Redeemable Preferred Shares on
               such Exchange Date or shall have failed to pay the relevant
               redemption price on the date fixed for redemption.

                    (B) In the event that (1) the Corporation or its successor
               has not filed the registration statement relating to the Exchange
               Offer (or, if applicable, the registration statement relating to
               the shelf registration of the Senior Exchangeable Redeemable
               Preferred Shares for resale by holders contemplated by the
               Registration Rights Agreement (the "Resale Registration")) on or
               before the 45th day after the Issue Date, (2) such registration
               statement (or, if applicable, the Resale Registration) has not
               become effective on or before the 120th day after the Issue Date,
               (3) the Exchange Offer has not been consummated within 30
               Business Days following the initial effective date of the
               registration statement relating to the Exchange Offer or (4) any
               registration statement required by the Registration Rights
               Agreement is filed and declared effective but shall thereafter
               cease to be effective (except as specifically permitted therein)
               without being succeeded immediately by an additional registration
               statement filed and declared effective (any such event referred
               to in clauses (1) through (4), a "Registration Default"), then
               additional dividends will accrue (in addition to the stated
               dividends on the Senior Exchangeable Redeemable Preferred Shares)
               at the rate of 0.25% per annum on the liquidation preference of
               the Senior Exchangeable Redeemable Preferred Shares for the
               period from and including the occurrence of the Registration
               Default until such time as no Registration Default is in effect.
               Such additional dividends (the "Special Dividends") will be
               payable quarterly in arrears on each regular Dividend Payment
               Date in accordance with the provisions of this paragraph (c). For
               each 90-day period that the Registration Default continues, the
               per annum rate of such Special Dividends will increase by an
               additional 0.25%; provided that such rate shall in no event
               exceed 1.0% per annum in the aggregate. At such time as the
               Registration Default is no longer in effect, the dividend rate on
               the Senior Exchangeable Redeemable Preferred Shares shall be the
               rate stated in paragraph (c)(i)(A) hereof and no further Special
               Dividends will accrue unless and until another Registration
               Default shall occur.

          (ii) All dividends paid with respect to the Senior Exchangeable
     Redeemable Preferred Shares pursuant to paragraph (c)(i) shall be paid pro
     rata to the Holders entitled thereto.

          (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 the Senior Exchangeable Redeemable Preferred Shares at any time.

          (iv) Dividends on account of arrears for any past Dividend Period and
     dividends in connection with any mandatory redemption pursuant to paragraph
     (e)(ii) 


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     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 of the Corporation.

          (v) No full dividends shall be declared by the Board of Directors or
     paid or set apart for payment by the Corporation on any Parity Shares for
     any period unless full cumulative dividends have been or contemporaneously
     are declared and paid in full, or declared and, if payable in cash, a sum
     in cash set apart sufficient for such payment, on the Senior Exchangeable
     Redeemable Preferred Shares for all Dividend Periods terminating on or
     prior to the date of payment of such full dividends on such Parity Shares.
     If full dividends are not so paid, all dividends declared upon the Senior
     Exchangeable Redeemable Preferred Shares and any other Parity Shares shall
     be declared pro rata so that the amount of dividends declared per share on
     the Senior Exchangeable Redeemable Preferred Shares and such Parity Shares
     shall in all cases bear to each other the same ratio that accrued dividends
     per share on the Senior Exchangeable Redeemable Preferred Shares and such
     Parity Shares bear to each other.

               (vi) (A) Holders of the Senior Exchangeable Redeemable Preferred
          Shares 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 Shares.

               (B) No dividends may be paid or set apart for such payment on
          Junior Shares (except dividends on Junior Shares payable in additional
          Junior Shares) if full cumulative dividends have not been paid in full
          on the Senior Exchangeable Redeemable Preferred Shares. So long as any
          Senior Exchangeable Redeemable Preferred Shares are 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 Parity Shares or Junior Shares,
          or any warrants, rights, calls or options to purchase any Parity
          Shares or Junior Shares, 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 Parity Shares or Junior Shares or any such
          warrants, rights, calls or options unless full cumulative dividends
          determined in accordance herewith on the Senior Exchangeable
          Redeemable Preferred Shares have been paid in full.

          (vii) Dividends payable on the Senior Exchangeable Redeemable
     Preferred Shares for any period shorter than a quarterly dividend period
     shall be computed on the basis of a 360-day year of twelve 30-day months
     and the actual number of days elapsed in the period for which payable.

          (d) Liquidation Preference.


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               (i) In the event of any voluntary or involuntary liquidation,
          dissolution or winding-up of affairs of the Corporation, the Holders
          of Senior Exchangeable Redeemable Preferred Shares then outstanding
          shall be entitled to be paid, out of the assets of the Corporation
          available for distribution to its shareholders, an amount in cash
          equal to the liquidation preference of $50 per Senior Exchangeable
          Redeemable Preferred Share, plus, without duplication, an amount in
          cash equal to 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) before any payment shall be made or any assets distributed
          to the holders of any of the Junior Shares including, without
          limitation, common stock of the Corporation. Except as provided in the
          preceding sentence, Holders of Senior Exchangeable Redeemable
          Preferred Shares shall not be entitled to any distribution in the
          event of any liquidation, dissolution or winding-up of the affairs of
          the Corporation. If the assets of the Corporation are not sufficient
          to pay in full the liquidation payments payable to the Holders of
          outstanding Senior Exchangeable Redeemable Preferred Shares and all
          Parity Shares, then the holders of all such shares shall share equally
          and ratably in such distribution of assets in proportion to the full
          liquidation preference, including, without duplication, all accrued
          and unpaid dividends, to which each is entitled.

               (ii) 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 affairs of the
          Corporation.

          (e) Redemption.

               (i) [Intentionally omitted.]

               (ii) Mandatory Redemption. On February 1, 2009, the Corporation
          shall redeem, to the extent of funds legally available therefor, in
          the manner provided for in paragraph (e)(iii) hereof, all of the
          Senior Exchangeable Redeemable Preferred Shares 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 (including an amount equal
          to a prorated dividend for the period from the Dividend Payment Date
          immediately prior to the Redemption Date to the Redemption Date) (the
          "Mandatory Redemption Price").

               (iii) Procedures for Redemption.

                    (A) At least thirty (30) days and not more than sixty (60)
               days prior to the date fixed for any redemption of the Senior
               Exchangeable Redeemable Preferred Shares pursuant to paragraph
               (e)(ii) hereof, written notice (each, a "Redemption Notice")
               shall be given by first class mail, postage prepaid, to each
 

                                       5




               Holder of record on the record date fixed for such redemption of
               the Senior Exchangeable Redeemable Preferred Shares 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 Senior Exchangeable Redeemable Preferred
               Shares 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 defective. The Redemption
               Notice shall state:

                         (1) [Intentionally omitted.];

                         (2) The Mandatory Redemption Price;

                         (3) The Redemption Date;

                         (4) That the Holder is to surrender to the Corporation,
                    in the manner, at the place or places and at the price
                    designated, his certificate or certificates representing the
                    Senior Exchangeable Redeemable Preferred Shares to be
                    redeemed; and

                         (5) That dividends on the Senior Exchangeable
                    Redeemable Preferred Shares to be redeemed shall cease to
                    accumulate on such Redemption Date unless the Corporation
                    defaults in the payment of Mandatory Redemption Price.

                    (B) Each Holder of Senior Exchangeable Redeemable Preferred
               Shares shall surrender the certificate or certificates
               representing such Senior Exchangeable Redeemable Preferred Shares
               to the Corporation, duly endorsed (or otherwise in proper form
               for transfer, as determined by the Corporation), in the manner
               and at the place designated in the Redemption Notice, and on the
               Redemption Date the full Mandatory 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.

                    (C) On and after the Redemption Date, unless the Corporation
               defaults in the payment in full of the applicable redemption
               price, dividends on the Senior Exchangeable Redeemable Preferred
               Shares called for redemption shall cease to accumulate on the
               Redemption Date, and all rights of the Holders of redeemed shares
               shall terminate with respect thereto on the Redemption Date,
               other than the right to receive the Mandatory Redemption Price,
               without interest; provided, however, that if a notice of
               redemption 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 accrue to the
               Redemption Date) shall have been irrevocably deposited in trust
               for the equal and ratable benefit for the 


                                       6


               Holders of the shares called for redemption, then, at the close
               of business on the day on which such funds are segregated and set
               apart, the Holders of the shares to be redeemed shall cease to be
               shareholders of the Corporation and shall be entitled only to
               receive the Mandatory Redemption Price, without interest.

          (f) Voting Rights.

               (i) The Holders of Senior Exchangeable Redeemable Preferred
          Shares, 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 shareholders of the Corporation.

                    (ii) (A) So long as any Senior Exchangeable Redeemable
               Preferred Shares are outstanding, the Corporation shall not
               authorize or issue any Parity Shares (other than additional
               Senior Exchangeable Redeemable Preferred Shares issued as
               dividends on the Senior Exchangeable Redeemable Preferred Shares
               in accordance with the terms hereof and Exchange Shares) without
               the affirmative vote or consent of Holders of at least a majority
               of the then outstanding Senior Exchangeable Redeemable Preferred
               Shares, voting or consenting, as the case may be, as a separate
               class, given in person or by proxy, either in writing or by
               resolution adopted at an annual or special meeting, if after
               giving effect to the issuance of such Parity Shares, the
               aggregate liquidation preference of the outstanding Parity Shares
               (other than (i) the Senior Exchangeable Redeemable Preferred
               Shares originally issued on the Issue Date, (ii) additional
               Senior Exchangeable Redeemable Preferred Shares issued as
               dividends in accordance with the terms hereof on the Senior
               Exchangeable Redeemable Preferred Shares originally issued on the
               Issue Date and additional Senior Exchangeable Redeemable
               Preferred Shares issued as dividends on the Senior Exchangeable
               Redeemable Preferred Shares in accordance with the terms hereof
               and (iii) any Exchange Shares) would exceed the sum of (x) $50
               million and (y) the aggregate amount of gross proceeds received
               after the Issue Date and on or prior to the date of issuance of
               such Parity Shares from the issuance of Qualified Junior Shares.

                    (B) So long as any Senior Exchangeable Redeemable Preferred
               Shares are outstanding, the Corporation shall not authorize any
               class of Senior Shares without the affirmative vote or consent of
               Holders of at least two-thirds of the outstanding Senior
               Exchangeable Redeemable Preferred Shares, voting or consenting,
               as the case may be, as a separate 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 Senior Exchangeable Redeemable Preferred
               Shares are outstanding, the Corporation shall not amend, alter or
               repeal any of the provisions of the Corporation's Certificate of
               Incorporation (including this Certificate of Designations) or the
               by-laws of the Corporation so as to affect adversely the
               specified rights, powers, preferences, privileges or voting
               rights of 


                                       7


               the holders of Senior Exchangeable Redeemable Preferred Shares or
               reduce the time for any notice which the holders of the Senior
               Exchangeable Redeemable Preferred Shares may be entitled without
               the affirmative vote or consent of Holders of at least two-thirds
               of the issued and outstanding Senior Exchangeable Redeemable
               Preferred Shares, 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) Notwithstanding the foregoing, modifications and
               amendments of the terms of this Certificate of Designations
               contained in paragraphs (h) and (l) below may be made by the
               Corporation with the consent of the Holders of a majority of the
               outstanding Senior Exchangeable Redeemable Preferred Shares;
               provided, however, that no such modification or amendment may,
               without the consent of the Holder of each outstanding Senior
               Exchangeable Redeemable Preferred Share affected thereby
               following the mailing of any Offer to Purchase and until the
               Expiration Date of that Offer to Purchase, modify any Offer to
               Purchase for the Senior Exchangeable Redeemable Preferred Shares
               required by paragraph (h) hereof in a manner materially adverse
               to the holders of outstanding Senior Exchangeable Redeemable
               Preferred Shares. In addition, the holders of a majority of the
               outstanding Senior Exchangeable Redeemable Preferred Shares, on
               behalf of all holders of Senior Exchangeable Redeemable Preferred
               Shares, may waive compliance by the Corporation with the
               covenants described below in paragraphs (h) and (l) and may waive
               any past default under the Certificate of Designations, except a
               default arising from failure to purchase any Senior Exchangeable
               Redeemable Preferred Shares tendered pursuant to an Offer to
               Purchase.

                    (E) Prior to the exchange of Senior Exchangeable Redeemable
               Preferred Shares for Exchange Notes, the Corporation shall not
               amend or modify the form of the Indenture for the Exchange Notes
               as it exists on the Issue Date (the "Indenture") (except as
               expressly provided therein in respect of amendments that may be
               made without the consent of Holders of Exchange Notes) without
               the affirmative vote or consent of Holders of at least a majority
               of the Senior Exchangeable Redeemable Preferred Shares then
               outstanding, 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.

                    (F) 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 Shares, Parity Shares or Senior
               Shares or (y) the increase or decrease in the amount of
               authorized Capital Stock of any class, including Senior Shares or
               Parity Shares, shall not require the consent of Holders of Senior
               Exchangeable Redeemable Preferred Shares and shall not be deemed
               to affect adversely the 


                                       8


               rights, preferences, privileges or voting rights of Holders of
               Senior Exchangeable Redeemable Preferred Shares.

                    (G) Notwithstanding the foregoing, at any time following a
               Covenant Amendment, the Corporation may, at its election and
               without the consent of any Holder of Senior Exchangeable
               Redeemable Preferred Shares, amend the Corporation's Certificate
               of Incorporation (including this Certificate of Designations) to
               add provisions making the Senior Exchangeable Redeemable
               Preferred Shares redeemable at the option of the Corporation
               (subject to contractual and other restrictions with respect
               thereto and the legal availability of funds therefor) as follows:

                    (x) At any time on or after February 1, 2002, in whole or in
               part, at the option of the Corporation, at the redemption prices
               (expressed in percentages of the liquidation preference thereof)
               set forth below, plus, without duplication, an amount in cash
               equal to all accumulated and unpaid dividends 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), if redeemed during the 12-month period
               beginning February 1 of each of the years set forth below:





                    Year                          Percentage
                    ----                          ----------

                                                   
                    2002                            107.00%
                    2003                            105.25
                    2004                            103.50
                    2005                            101.75
                    2006 and thereafter             100.00



          In the event of redemption of only a portion of the then outstanding
          Senior Exchangeable Redeemable Preferred Shares, the Corporation shall
          effect such redemption on a pro rata basis.

                    (y) Prior to February 1, 2000, in part, in an amount not 
               to exceed 35% of the initial aggregate liquidation preference 
               of the Senior Exchangeable Redeemable Preferred Shares 
               originally issued out of the net cash proceeds of one or more 
               Qualifying Events (other than any Qualifying Event that 
               results in a Change of Control) at a redemption price of 
               114.0% of the liquidation preference thereof plus, without 
               duplication, an amount in cash equal to all accumulated and 
               unpaid dividends 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); provided, however, that after any such redemption, the 
               aggregate liquidation preference of the Senior Exchangeable 
               Redeemable Preferred Shares outstanding must equal at least 
               65% of the Senior Exchangeable Redeemable Preferred Shares 

                                       9


               issued on the Issue Date. Any such redemption shall occur on 
               or prior to 60 days after the receipt by the Corporation of 
               the proceeds of such Qualifying Event.

               (iii) Without the affirmative vote or consent of Holders of a
          majority of the issued and outstanding Senior Exchangeable Redeemable
          Preferred Shares, voting or consenting, as the case may be, as a
          separate class, given in person or by proxy, either in writing or by
          resolution adopted at an annual or special meeting, the Corporation
          shall not, in a single transaction or series of related transactions,
          consolidate with or merge with or into, or sell, assign, transfer,
          lease, convey or otherwise dispose of all or substantially all of its
          assets to, another Person or adopt a plan of liquidation unless: (A)
          either (1) the Corporation is the surviving or continuing Person or
          (2) the Person (if other than the Corporation) formed by such
          consolidation or into which the Corporation is merged or the Person
          that acquires by conveyance, transfer or lease the properties and
          assets of the Corporation substantially as an entirety or in the case
          of a plan of liquidation, the Person to which assets of the
          Corporation have been transferred, shall be a corporation, limited
          liability Corporation, partnership or trust organized and existing
          under the laws of the United States or any State thereof or the
          District of Columbia; (B) the Senior Exchangeable Redeemable Preferred
          Shares shall be converted into or exchanged for and shall become
          shares of Capital Stock of such successor, transferee or resulting
          Person, having in respect of such successor, transferee or resulting
          Person, having the same powers, preferences and relative,
          participating, optional or other special rights and the
          qualifications, limitations or restrictions thereon, that the Senior
          Exchangeable Redeemable Preferred Shares had immediately prior to such
          transaction; (C) immediately after giving pro forma effect to such
          transaction, no Voting Rights Triggering Event shall have occurred or
          be continuing; and (D) the Corporation has delivered to the Transfer
          Agent prior to the consummation of the proposed transaction an
          Officers' Certificate and an Opinion of Counsel, each stating that
          such consolidation, merger or transfer complies with the terms hereof
          and that all conditions precedent herein relating to such transaction
          have been satisfied.

               For purposes of the foregoing, the transfer (by lease,
          assignment, sale or otherwise, in a single transaction or series of
          related transactions) of all or substantially all of the properties or
          assets of one or more Subsidiaries of the Corporation, the Capital
          Stock of which constitutes all or substantially all of the properties
          and assets of the Corporation, shall be deemed to be the transfer of
          all or substantially all of the properties and assets of the
          Corporation.

                    (iv) (A) If (1) dividends on the Senior Exchangeable
               Redeemable Preferred Shares are in arrears and unpaid (and, if
               after February 1, 2002, such dividends are not paid in cash) for
               six or more Dividend Periods (whether or not consecutive) (a
               "Dividend Default"); (2) the Corporation fails to redeem all of
               the then outstanding Senior Exchangeable Redeemable Preferred
               Shares on February 1, 2009 or fails otherwise to discharge any
               redemption obligation with respect to the Senior Exchangeable
               Redeemable Preferred Shares; (3) the Corporation fails to make an
               Offer to Purchase (whether pursuant to the terms of 


                                       10



               paragraph (h)(i) or otherwise) following a Change of Control if
               such Offer to Purchase is required by paragraph (h) hereof or
               fails to purchase Senior Exchangeable Redeemable Preferred Shares
               from Holders who elect to have such shares purchased pursuant to
               the Offer to Purchase; (4) the Corporation breaches or violates
               one of the provisions set forth in any paragraphs (f)(iii) or (1)
               hereof and the breach or violation continues for a period of 30
               days or more after the Corporation receives notice thereof
               specifying the default from the Holders of at least 25% of the
               Senior Exchangeable Redeemable Preferred Shares then outstanding,
               or (5) the Corporation fails to pay at the final stated maturity
               (giving effect to any extensions thereof) the principal amount of
               any Debt of the Corporation or any Subsidiary of the Corporation,
               or the final stated maturity of any such Debt is accelerated, if
               the aggregate principal amount of such Debt, together with the
               aggregate principal amount of any other such Debt in default for
               failure to pay principal at the final stated maturity (giving
               effect to any extensions thereof) or that has been accelerated,
               aggregates $15,000,000 or more at any time, in each case, after a
               10-day period during which such default shall not have been cured
               or such acceleration rescinded, then in the case of any of
               clauses (1)-(5) the number of directors constituting the Board of
               Directors shall be adjusted by the number, if any, necessary to
               permit the Holders of the Senior Exchangeable Redeemable
               Preferred Shares, voting together with any outstanding Party
               Shares separately as a single class, to elect the lesser of two
               directors and that number of directors constituting 25% of the
               members of the Board of Directors. Each such event described in
               clauses (1), (2), (3), (4) and (5) is a "Voting Rights Triggering
               Event." Holders of a majority of the issued and outstanding
               Senior Exchangeable Redeemable Preferred Shares, voting together
               with any outstanding Parity Shares separately as a single class,
               shall have the exclusive right to elect the lesser of two
               directors and that number of directors constituting 25% of the
               members of 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 (other than as described in (f)(iv)(B)
               below). The voting rights provided herein shall be the exclusive
               remedy at law or in equity of the holders of the Senior
               Exchangeable Redeemable Preferred Shares for any Voting Rights
               Triggering Event.

                    (B) The right of the Holders of Senior Exchangeable
               Redeemable Preferred Shares to elect members of the Board of
               Directors as set forth in subparagraph (f)(iv)(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 Senior Exchangeable Redeemable Preferred Shares
               are paid in full (and, in the case of dividends payable after
               February 1, 2002, paid in cash) 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
               a majority of the Senior Exchangeable Redeemable Preferred Shares
               then outstanding, at which time (1) the special right of the
               Holders of Senior 


                                       11



               Exchangeable Redeemable Preferred Shares so to vote for the
               election of directors and (2) the term of office of the directors
               elected by the Holders of the Senior Exchangeable Redeemable
               Preferred Shares shall each terminate and the directors elected
               by the holders of Voting Stock other than the Senior Exchangeable
               Redeemable Preferred Shares shall constitute the entire Board of
               Directors. At any time after voting power to elect directors
               shall have become vested and be continuing in the Holders of
               Senior Exchangeable Redeemable Preferred Shares pursuant to
               paragraph (f)(iv)(A) hereof, or if vacancies shall exist in the
               offices of directors elected by the Holders of Senior
               Exchangeable Redeemable Preferred Shares, a proper officer of the
               Corporation may, and upon the written request of the Holders of
               record of at least twenty-five percent (25%) of the Senior
               Exchangeable Redeemable Preferred Shares then outstanding
               addressed to the Secretary of the Corporation shall, call a
               special meeting of the Holders of Senior Exchangeable Redeemable
               Preferred Shares, 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 twenty (20)
               days after personal service of said written request upon the
               Secretary of the Corporation, or within twenty (20) days after
               mailing the same within the United States by certified mail,
               addressed to the Secretary of the Corporation at its principal
               executive offices, then the Holders of record of at least
               twenty-five percent (25%) of the outstanding Senior Exchangeable
               Redeemable Preferred Shares 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 shareholders of
               the Corporation and shall be held at the place for holding the
               annual meetings of shareholders. Any Holder of Senior
               Exchangeable Redeemable Preferred Shares so designated shall
               have, and the Corporation shall provide, access to the lists of
               shareholders to be called pursuant to the provisions hereof.

                    (C) At any meeting held for the purpose of electing
               directors at which the Holders of Senior Exchangeable Redeemable
               Preferred Shares voting together with any outstanding shares of
               Parity Shares as a separate class shall have the right as
               described herein to elect directors, the presence in person or by
               proxy of the Holders of at least a majority of the then
               outstanding Senior Exchangeable Redeemable Preferred Shares and
               Parity Shares shall be required to constitute a quorum of such
               Senior Exchangeable Redeemable Preferred Shares and Parity
               Shares.

                    (D) Any vacancy occurring in the office of a director
               elected by the Holders of Senior Exchangeable Redeemable
               Preferred Shares and Parity Shares may be filled by the remaining
               directors elected by the Holders of Senior Exchangeable
               Redeemable Preferred Shares and Parity Shares unless and until
               such vacancy shall be filled by the Holders of Senior
               Exchangeable Redeemable Preferred Shares and Parity Shares.




                                       12





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

               (g) Exchange.

                         (i) Requirements. The outstanding Senior Exchangeable
                    Redeemable Preferred Shares are exchangeable as a whole but
                    not in part, at the option of the Corporation at any time on
                    any Dividend Payment Date for the Corporation's 14% Senior
                    Subordinated Notes due 2009 (the "Exchange Notes") to be
                    substantially in the form set forth in the Indenture, a copy
                    of which is on file with the secretary of the Corporation
                    and the Transfer Agent, provided that any such exchange may
                    only be made if on or prior to the date of such exchange (A)
                    the Corporation has paid all accumulated dividends on the
                    Senior Exchangeable Redeemable Preferred Shares (including
                    the dividends payable on the date of exchange) and there
                    shall be no contractual impediment to such exchange and (B)
                    immediately after giving effect to such exchange, no Default
                    or Event of Default (as defined in the Indenture) would
                    exist under the Indenture and no default or event of default
                    would exist under the Existing Indenture. The exchange rate
                    shall be $1.00 principal amount of Exchange Notes for each
                    $1.00 of the aggregate liquidation preference of Senior
                    Exchangeable Redeemable Preferred Shares, including, to the
                    extent necessary, Exchange Notes in principal amounts less
                    than $1,000.

                         (ii) Procedure for Exchange.

                              (A)  At least thirty (30) days and not more than 
                         sixty (60) days prior to the date fixed for exchange,
                         written notice (the "Exchange Notice") shall be given 
                         by first class mail, postage prepaid, to each Holder of
                         record on the record date fixed for such exchange of 
                         the Senior Exchangeable Redeemable Preferred Shares at
                         such Holder's address as the same appears on the share
                         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 exchange
                         of any Senior Exchangeable Redeemable Preferred Shares
                         to be exchanged 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
                         defective. The Exchange Notice shall state:

                                   (1) The Exchange Date;

                                   (2) That the Holder is to surrender to the
                                       Corporation, in the manner and at the
                                       place or places designated, his
                                       certificate or certificates representing
                                       the Senior Exchangeable Redeemable
                                       Preferred Shares to be exchanged;


                                       13



                                   (3) That dividends on the Senior
                                       Exchangeable Redeemable Preferred Shares
                                       to be exchanged shall cease to accrue on
                                       such Exchange Date whether or not
                                       certificates for Senior Exchangeable
                                       Redeemable Preferred Shares are
                                       surrendered for exchange on such
                                       Exchange Date unless the Corporation
                                       shall default in the delivery of
                                       Exchange Notes; and

                                   (4) That interest on the Exchange Notes
                                       shall accrue from the Exchange Date
                                       whether or not certificates for Senior
                                       Exchangeable Redeemable Preferred Shares
                                       are surrendered for exchange on such
                                       Exchange Date.

                              (B) On or before the Exchange Date, each Holder of
                    Senior Exchangeable Redeemable Preferred Shares shall
                    surrender the certificate or certificates representing such
                    Senior Exchangeable Redeemable Preferred Shares, in the
                    manner and at the place designated in the Exchange Notice.
                    The Corporation shall cause the Exchange Notes to be
                    executed on the Exchange Date and, upon surrender in
                    accordance with the Exchange Notice of the certificates for
                    any Senior Exchangeable Redeemable Preferred Shares so
                    exchanged, duly endorsed (or otherwise in proper form for
                    transfer, as determined by the Corporation), such shares
                    shall be exchanged by the Corporation into Exchange Notes.
                    The Corporation shall pay interest on the Exchange Notes at
                    the rate and on the dates specified therein from the
                    Exchange Date.

                              (C) If notice has been mailed as aforesaid, and if
                    before the Exchange Date specified in such notice (1) the
                    Indenture shall have been duly executed and delivered by the
                    Corporation and the trustee thereunder and (2) all Exchange
                    Notes necessary for such exchange shall have been duly
                    executed by the Corporation and delivered to the trustee
                    under the Indenture with irrevocable instructions to
                    authenticate the Exchange Notes necessary for such exchange,
                    then the rights of the Holders of Senior Exchangeable
                    Redeemable Preferred Shares so exchanged as shareholders of
                    the Corporation shall cease (except the right to receive
                    Exchange Notes, an amount in cash equal to the amount of
                    accrued and unpaid dividends to the Exchange Date), and the
                    Person or Persons entitled to receive the Exchange Notes
                    issuable upon exchange shall be treated for all purposes as
                    the registered Holder or Holders of such Exchange Notes as
                    of the Exchange Date.

               (iii) No Exchange in Certain Cases. Notwithstanding the foregoing
          provisions of this paragraph (g), the Corporation shall not be
          entitled to exchange the Senior Exchangeable Redeemable Preferred
          Shares for Exchange Notes if such exchange, or any term or provision
          of the Indenture or the Exchange Notes, or the performance of the
          Corporation's obligations under the Indenture or the Exchange Notes,
          shall materially 


                                       14


          violate or conflict with any applicable law or if, at the time of such
          exchange, the Corporation is insolvent or if it would be rendered
          insolvent by such exchange.

          (h) Change of Control.

                    (i) Within 30 days following a Change of Control (the date
               of such occurrence being the "Change of Control Date"), the
               Corporation shall notify the Holders of the Senior Exchangeable
               Redeemable Preferred Shares in writing of such occurrence and
               shall make an Offer to Purchase all of the then outstanding
               Senior Exchangeable Redeemable Preferred Shares at a purchase
               price of 101% of the liquidation preference thereof plus, without
               duplication, an amount in cash equal to all accumulated and
               unpaid dividends per share (including an amount in cash equal to
               a prorated dividend for the period from the Dividend Payment Date
               immediately prior to the Payment Date to the Payment Date).

                    (ii) The Corporation will comply with any securities laws
               and regulations, to the extent such laws and regulations are
               applicable to the repurchase of the Senior Exchangeable
               Redeemable Preferred Shares in connection with an Offer to
               Purchase.

                    (iii) On the payment Date the Corporation shall (A) accept
               for payment the Senior Exchangeable Redeemable Preferred Shares
               validly tendered pursuant to the Offer to Purchase, (B) pay to
               the Holders of shares so accepted the purchase price therefor in
               cash and (C) cancel and retire each surrendered certificate.
               Unless the Corporation defaults in the payment for the Senior
               Exchangeable Redeemable Preferred Shares tendered pursuant to the
               Offer to Purchase, dividends will cease to accrue with respect to
               the Senior Exchangeable Redeemable Preferred Shares tendered and
               all rights of Holders of such tendered shares will terminate,
               except for the right to receive payment therefor, on the Payment
               Date.

                    (iv) Notwithstanding the foregoing, the Corporation will not
               repurchase or redeem any Senior Exchangeable Redeemable Preferred
               Shares pursuant to the provisions of this paragraph prior to the
               Corporation's repurchase of such Senior Notes as are required to
               be repurchased pursuant to the Existing Indenture.

          (i) Conversion or Exchange.

               The Holders of Senior Exchangeable Redeemable Preferred Shares
          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.

               (j) Reissuance of Senior Exchangeable Redeemable Preferred
          Shares.

               Senior Exchangeable Redeemable Preferred Shares that have been
          issued and reacquired in any manner, including shares purchased or
          redeemed or exchanged, shall (upon 


                                       15



          compliance with any applicable provisions of the laws of Delaware)
          have the status of authorized and unissued shares of Preferred Shares
          undesignated as to series and may be redesignated and reissued as part
          of any series of Preferred Shares, including but not limited to
          reissuance as a stock dividend on the Company's 14% Senior
          Exchangeable Redeemable Preferred Shares; provided that such
          reacquired shares shall not otherwise be reissued as Senior
          Exchangeable Redeemable Preferred Shares.

               (k) 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.

               (l) Certain Additional Provisions.

                    (i) Limitation on Consolidated Debt. The Corporation may
               not, and may not permit any Restricted Subsidiary of the
               Corporation to, Incur any Debt unless either (a) the ratio of (i)
               the aggregate consolidated principal amount of Debt of the
               Corporation outstanding as of the most recent available quarterly
               or annual balance sheet, after giving pro forma effect to the
               Incurrence of such Debt and any other Debt Incurred since such
               balance sheet date and the receipt and application of the
               proceeds thereof to (ii) Consolidated Cash Flow Available for
               Fixed Charges for the four full fiscal quarters next preceding
               the Incurrence of such Debt for which consolidated financial
               statements are available, determined on a pro forma basis as if
               any such Debt had been Incurred and the proceeds thereof had been
               applied at the beginning of such four fiscal quarters, would be
               less than 5.5 to 1 for such four-quarter periods ending on or
               prior to December 31, 1999 and 5.0 to 1 for such periods ending
               thereafter, or (b) the Corporation's Consolidated Capital Ratio
               as of the most recent available quarterly or annual balance
               sheet, after giving pro forma effect to the Incurrence of such
               Debt and any other Debt Incurred since such balance sheet date
               and the receipt and application of the proceeds thereof, is less
               than 2.0 to 1.

                    Notwithstanding the foregoing limitation, the Corporation
               and any Restricted Subsidiary may Incur the following:

                         (A) Debt under any one or more Bank Credit Agreements
                    or Vendor Financing Facilities in an aggregate principal
                    amount at any one time not to exceed $125 million, and any
                    renewal, extension, refinancing or refunding thereof in an
                    amount which, together with any principal amount remaining
                    outstanding or available under all Bank Credit Agreements
                    and Vendor Financing Facilities of the Corporation and its
                    Restricted Subsidiaries, plus the amount of any premium
                    required to be paid in connection with such refinancing
                    pursuant to the terms of any Bank Credit Agreement so
                    refinanced plus the amount of expenses incurred in


                                       16



                    connection with such refinancing, does not exceed the
                    aggregate principal amount outstanding or available under
                    all such Bank Credit Agreements and Vendor Financing
                    Facilities of the Corporation and its Restricted
                    Subsidiaries immediately prior to such renewal, extension,
                    refinancing or refunding;

                         (B) Purchase Money Debt Incurred to finance the
                    construction, acquisition or improvement of
                    Telecommunications Assets, provided that the net proceeds of
                    such Purchase Money Debt do not exceed 80% of the cost of
                    construction, acquisition or improvement price of the
                    applicable Telecommunications Assets;

                         (C) Debt owed by the Corporation to any Wholly-Owned
                    Restricted Subsidiary of the Corporation or Debt owed by a
                    Restricted Subsidiary of the Corporation to the Corporation
                    or another Wholly-Owned Subsidiary of the Corporation;
                    provided, however, that upon either (x) the transfer or
                    other disposition by such Wholly-Owned Restricted Subsidiary
                    or the Corporation of any Debt so permitted to a Person
                    other than the Corporation or another Wholly-Owned
                    Restricted Subsidiary of the Corporation or (y) the issuance
                    (other than directors' qualifying shares), sale, lease,
                    transfer or other disposition of shares of Capital Stock
                    (including by consolidation or merger) of such Wholly-Owned
                    Restricted Subsidiary to a Person other than the Corporation
                    or another such Wholly-Owned Restricted Subsidiary, the
                    provisions of this clause (C) shall no longer be applicable
                    to such Debt and such Debt shall be deemed to have been
                    Incurred at the time of such transfer or other disposition;

                         (D) Debt Incurred to renew, extend, refinance or refund
                    (each, a "refinancing") Debt (1) referred to in clause (F)
                    below or (2) Incurred pursuant to the preceding paragraph or
                    clause (B) of this paragraph in an aggregate principal
                    amount not to exceed the aggregate principal amount of and
                    accrued interest on the Debt so refinanced plus the amount
                    of any premium required to be paid in connection with such
                    refinancing pursuant to the terms of the Debt so refinanced
                    or the amount of any premium reasonably determined by the
                    Corporation as necessary to accomplish such refinancing by
                    means of a tender offer or privately negotiated repurchase,
                    plus the amount of expenses of the Corporation incurred in
                    connection with such refinancing, provided, however, that,
                    the refinancing Debt by its terms, or by the terms of any
                    agreement or instrument pursuant to which such Debt is
                    issued, (x) does not provide for payments of principal of
                    such Debt at the stated maturity thereof or by way of a
                    sinking fund applicable thereto or by way of any mandatory
                    redemption, defeasance, retirement or repurchase thereof by
                    the Corporation (including any redemption, retirement or
                    repurchase which is contingent upon events or circumstances,
                    but excluding any retirement required by virtue of
                    acceleration of such Debt upon any event of default
                    thereunder), in each case prior to the time the same are
                    required by the terms of the Debt being refinanced and (y)
                    does not permit redemption or other retirement (including
                    pursuant to an offer to purchase made by the Corporation) of
                    such Debt at the 



                                       17



                    option of the holder thereof prior to the final stated
                    maturity of the Debt being refinanced, other than a
                    redemption or other retirement at the option of the holder
                    of such Debt (including pursuant to an offer to purchase
                    made by the Corporation) which is conditioned upon a change
                    substantially similar to the provisions of paragraph (h)
                    above or which is pursuant to provisions substantially
                    similar to the provisions of Section 1013 of the Existing
                    Indenture as in effect on the Issue Date (whether or not the
                    Existing Notes are outstanding or the Existing Indenture is
                    in effect);

                         (E) Debt consisting of Permitted Interest Rate and
                    Currency Protection Agreements;

                         (F) Debt outstanding at the Issue Date;

                         (G) Subordinated Debt invested by (a) a group of
                    employees of the Corporation, which includes the Chief
                    Executive Officer of the Corporation, who own, directly or
                    indirectly, through an employee stock ownership plan or
                    arrangement, shares of the Corporation's Capital Stock or
                    (b) any other Person that controls the Corporation (i) on
                    the Issue Date or (ii) after a Change of Control, provided
                    that the Corporation is not in default with respect to its
                    obligations under paragraph (h) above;

                         (H) Debt consisting of performance and other similar
                    bonds and reimbursement obligations Incurred in the ordinary
                    course of business securing the performance of contractual,
                    franchise or license obligations of the Corporation or a
                    Restricted Subsidiary, or in respect of a letter of credit
                    obtained to secure such performance; and

                         (I) Debt not otherwise permitted to be incurred
                    pursuant to clauses (A) through (H) above, which, together
                    with any other outstanding Debt Incurred pursuant to this
                    clause (I), has an aggregate principal amount (or, in the
                    case of Debt issued at a discount, an accreted amount
                    (determined in accordance with generally accepted accounting
                    principles) at the time of incurrence) not in excess of $10
                    million at any time outstanding.

                    For purposes of determining compliance with this paragraph
               (l)(i), in the event that an item of Debt meets the criteria of
               more than one of the types of Debt the Corporation is permitted
               to Incur pursuant to the foregoing clauses (A) through (I), the
               Corporation shall have the right, in its sole discretion, to
               classify such item of Debt and shall only be required to include
               the amount and type of such Debt under the clause permitting the
               Debt as so classified. For purposes of determining any particular
               amount of Debt under this covenant, Guarantees or Liens with
               respect to letters of credit supporting Debt otherwise included
               in the determination of a particular amount shall not be
               included.



                                       18


                    (ii) Reports. So long as any Senior Exchangeable Redeemable
               Preferred Shares are outstanding, the Corporation will provide to
               the holders of Senior Exchangeable Redeemable Preferred Shares,
               within 15 days after it files them with the Securities and
               Exchange Commission (or any successor agency performing similar
               functions), copies of the annual reports and of the information,
               documents and other reports (or copies of such portions of any of
               the foregoing as the Commission may by rules and regulation
               prescribe) which the Corporation files with the Commission
               pursuant to Section 13 or 15(d) of the Exchange Act. In the event
               that the Corporation is no longer required to furnish such
               reports to its securityholders pursuant to the Exchange Act, the
               Corporation will cause its consolidated financial statements,
               comparable to those which would have been required to appear in
               annual or quarterly reports, to be delivered to the Holders of
               Senior Exchangeable Redeemable Preferred Shares.

               (m) Definitions.

               As used in this Certificate of Designations, 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. Any reference in any of the
          following terms to any term in or provision of the Existing Indenture
          shall refer to such term or provision as in effect on the Issue Date
          and as may be amended in accordance with the terms of the Existing
          Indenture (whether or not the Existing Notes are outstanding or the
          Existing Indenture is in effect):

               "Acquired Debt" means, with respect to any specified Person, (i)
          Debt of any other Person existing at the time such Person merges with
          or into or consolidates with or becomes a Restricted Subsidiary of
          such specified Person and (ii) Debt secured by a Lien encumbering any
          asset acquired by such specified Person, which Debt was not Incurred
          in anticipation of, and was outstanding prior to, such merger,
          consolidation or acquisition.

               "Affiliate" of any specified Person means any other Person
          directly or indirectly controlling or controlled by or under direct or
          indirect common control with such specified Person. For the purposes
          of this definition, "control" when used with respect to any specified
          Person means the power to direct the management and policies of such
          Person, directly or indirectly, whether through the ownership of
          voting securities, by contract or otherwise; and the terms
          "controlling" and "controlled" have meanings correlative to the
          foregoing.

               "Asset Disposition" by any Person means any transfer, conveyance,
          sale, lease or other disposition by such Person or any of its
          Restricted Subsidiaries (including a consolidation or merger or other
          sale of any such Restricted Subsidiary with, into or to another Person
          in a transaction in which such Restricted Subsidiary ceases to be a
          Restricted Subsidiary of the specified Person, but excluding a
          disposition by a Restricted Subsidiary of such Person to such Person
          or a Wholly-Owned Restricted Subsidiary of such Person or by such
          Person to a Wholly-Owned Restricted Subsidiary of such Person) of (i)
          shares of Capital Stock or other ownership interests of a Restricted
          Subsidiary of such Person (other than as permitted by the 


                                       19



          provisions of Section 1008 of the Existing Indenture or pursuant to a
          transaction in compliance with Section 801 of the Existing Indenture),
          (ii) substantially all of the assets of such Person or any of its
          Restricted Subsidiaries representing a division or line of business
          (other than as part of a Permitted Investment (as defined in the
          Existing Indenture)) or (iii) other assets or rights of such Person or
          any of its Restricted Subsidiaries other than (A) in the ordinary
          course of business or (B) that constitutes a Restricted Payment (as
          defined in the Existing Indenture) which is permitted by the
          provisions of Section 1009 of the Existing Indenture; provided that a
          transaction described in clause (i), (ii) and (iii) shall constitute
          an Asset Disposition only if the aggregate consideration for such
          transfer, conveyance, sale, lease or other disposition is equal to $5
          million or more in any 12-month period.

               "Bank Credit Agreement" means any one or more credit agreements
          (which may include or consist of revolving credits) between the
          Corporation or any Restricted Subsidiary of the Corporation and one or
          more banks or other financial institutions providing financing for the
          business of the Corporation and its Restricted Subsidiaries.

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

               "Business Day" means each Monday, Tuesday, Wednesday, Thursday
          and Friday which is not a day on which banking institutions in The
          Borough of Manhattan, The City of New York, New York are authorized or
          obligated by law or executive order to close.

               "Capital Lease Obligation" of any Person means the obligation to
          pay rent or other payment amounts under a lease of (or other Debt
          arrangements 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 generally accepted accounting principles (a
          "Capital Lease"). The stated maturity of such obligation shall be the
          date of the last payment of rent or any other 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. The principal amount of
          such obligation shall be the capitalized amount thereof that would
          appear on the face of a balance sheet of such Person in accordance
          with generally accepted accounting principles.

               "Capital Stock" of any Person means any and all shares,
          interests, participations or other equivalents (however designated) of
          corporate stock or other equity participations, including partnership
          interests, whether general or limited, of such Person.

               "Change of Control" will be deemed to have occurred at such time
          as either (a) any Person or any Persons acting together that would
          constitute a "group" (a "Group") for purposes of Section 13(d) of the
          Exchange Act, or any successor provision thereto (other than Eagle
          River, Mr. Craig O. McCaw and their respective Affiliates or an
          underwriter engaged in a firm commitment underwriting on behalf of the
          Corporation), shall beneficially own (within the meaning of Rule 13d-3
          under the Exchange Act, or any successor provision 


                                       20



          thereto) more than 50% of the aggregate voting power of all classes of
          Voting Stock of the Corporation; (b) neither Mr. Craig O. McCaw nor
          any person designated by him to the Corporation as acting on his
          behalf shall be a director of the Corporation; or (c) 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 by the Board of Directors or whose nomination
          for election by the shareholders of the Corporation was proposed by a
          vote of a majority of the directors of the Corporation 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.

               "Change of Control Date" shall have the meaning ascribed to it in
          paragraph (h)(i) hereof.

               "Consolidated Capital Ratio" of any Person as of any date means
          the ratio of (i) the aggregate consolidated principal amount of Debt
          of such Person then outstanding to (ii) the aggregate consolidated
          Capital Stock (other than Disqualified Stock) and paid-in capital
          (other than in respect of Disqualified Stock) of such Person as of
          such date.

               "Consolidated Cash Flow Available for Fixed Charges" for any
          period means the Consolidated Net Income of the Corporation and its
          Restricted Subsidiaries for such period increased by the sum of (i)
          Consolidated Interest Expense of the Corporation and its Restricted
          Subsidiaries for such period, plus (ii) Consolidated Income Tax
          Expense of the Corporation and its Restricted Subsidiaries for such
          period, plus (iii) the consolidated depreciation and amortization
          expense included in the income statement of the Corporation and its
          Restricted Subsidiaries for such period, plus (iv) any non-cash
          expense related to the issuance to employees of the Corporation or any
          Restricted Subsidiary of the Corporation of options to purchase
          Capital Stock of the Corporation or such Restricted Subsidiary, plus
          (v) any charge related to any premium or penalty paid in connection
          with redeeming or retiring any Debt prior to its stated maturity;
          provided, however, that there shall be excluded therefrom the
          Consolidated Cash Flow Available for Fixed Charges (if positive) of
          any Restricted Subsidiary of the Corporation (calculated separately
          for such Restricted Subsidiary in the same manner as provided above
          for the Corporation) that is subject to a restriction which prevents
          the payment of dividends or the making of distributions to the
          Corporation or another Restricted Subsidiary of the Corporation to the
          extent of such restriction.

               "Consolidated Income Tax Expense" for any period means the
          consolidated provision for income taxes of the Corporation and its
          Restricted Subsidiaries for such period calculated on a consolidated
          basis in accordance with generally accepted accounting principles.

               "Consolidated Interest Expense" means for any period the
          consolidated interest expense included in a consolidated income
          statement (excluding interest income) of the Corporation and its
          Restricted Subsidiaries for such period calculated on a consolidated
          basis in accordance with generally accepted accounting principles,
          including without limitation or duplication (or, to the extent not so
          included, with the addition of), (i) the amortization of 


                                       21


          Debt discounts; (ii) any payments or fees with respect to letters of
          credit, bankers' acceptances or similar facilities; (iii) fees with
          respect to interest rate swap or similar agreements or foreign
          currency hedge, exchange or similar agreements; (iv) Preferred Stock
          dividends of the Corporation and its Restricted Subsidiaries (other
          than dividends paid in shares of Preferred Stock that is not
          Disqualified Stock) declared and paid or payable; (v) accrued
          Disqualified Stock dividends of the Corporation and its Restricted
          Subsidiaries, whether or not declared or paid; (vi) interest on Debt
          guaranteed by the Corporation and its Restricted Subsidiaries; and
          (vii) the portion of any Capital Lease Obligation paid during such
          period that is allocable to interest expense.

               "Consolidated Net Income" for any period means the consolidated
          net income (or loss) of the Corporation and its Restricted
          Subsidiaries for such period determined on a consolidated basis in
          accordance with generally accepted accounting principles; provided
          that there shall be excluded therefrom (i) the net income (or loss) of
          any Person acquired by the Corporation or a Restricted Subsidiary of
          the Corporation in a pooling-of-interests transaction for any period
          prior to the date of such transaction, (ii) the net income (or loss)
          of any Person that is not a Restricted Subsidiary of the Corporation
          except to the extent of the amount of dividends or other distributions
          actually paid to the Corporation or a Restricted Subsidiary of the
          Corporation by such Person during such period, (iii) gains or losses
          on Asset Dispositions by the Corporation or its Restricted
          Subsidiaries, (iv) all extraordinary gains and extraordinary losses,
          (v) the cumulative effect of changes in accounting principles, (vi)
          non-cash gains or losses resulting from fluctuations in currency
          exchange rates, (vii) any non-cash gain or loss realized on the
          termination of any employee pension benefit plan and (viii) the tax
          effect of any of the items described in clauses (i) through (vii)
          above.

               "corporation" means a corporation, association, company, limited
          liability company, joint-stock company or business trust.

               "Covenant Amendment" means either (i) the defeasance,
          extinguishment or amendment of certain covenants of the Existing
          Indenture that would cause the Senior Exchangeable Redeemable
          Preferred Shares to be deemed Disqualified Stock (under the Existing
          Indenture) if the provisions of paragraph (f)(G)(x) and (y) were a
          part of this Certificate of Designations, and include, but are not
          limited to, the definition of Disqualified Stock (under the Existing
          Indenture) or (ii) defeasance or extinguishment of the Existing
          Indenture in its entirety.

               "Debt" means (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) every obligation of such Person for
          money borrowed, (ii) every obligation of such Person evidenced by
          bonds, debentures, notes or other similar instruments, including any
          such obligations Incurred in connection with the acquisition of
          property, assets or businesses, (iii) every reimbursement obligation
          of such Person with respect to letters of credit, bankers' acceptances
          or similar facilities issued for the account of such Person, (iv)
          every obligation of such Person issued or assumed as the deferred
          purchase price of property or services (including securities


                                       22


          repurchase agreements but excluding trade accounts payable or accrued
          liabilities arising in the ordinary course of business which are not
          overdue or which are being contested in good faith), (v) every Capital
          Lease Obligation of such Person, (vi) all Receivables Sales of such
          Person, together with any obligation of such Person to pay any
          discount, interest, fees, indemnities, penalties, recourse, expenses
          or other amounts in connection therewith, (vii) all obligations to
          redeem Disqualified Stock issued by such Person, (viii) every
          obligation under Interest Rate and Currency Protection Agreements of
          such Person and (ix) every obligation of the type referred to in
          clauses (i) through (viii) of another Person and all dividends of
          another Person the payment of which, in either case, such Person has
          Guaranteed. The "amount" or "principal amount" of Debt at any time of
          determination as used herein represented by (a) any Debt issued at a
          price that is less than the principal amount at maturity thereof,
          shall be the amount of the liability in respect thereof determined in
          accordance with generally accepted accounting principles, (b) any
          Receivables Sale, shall be the amount of the unrecovered capital or
          principal investment of the purchaser (other than the Corporation or a
          Wholly-Owned Restricted Subsidiary of the Corporation) thereof,
          excluding amounts representative of yield or interest earned on such
          investment, (c) any Disqualified Stock, shall be the maximum fixed
          redemption or repurchase price in respect thereof, (d) any Capital
          Lease Obligation, shall be determined in accordance with the
          definition thereof, or (e) any Permitted Interest Rate or Currency
          Protection Agreement, shall be zero. In no event shall Debt include
          any liability for taxes.

               "Disqualified Stock" of any Person means any Capital Stock of
          such Person 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, matures 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
          February 1, 2009; provided, however, that any Preferred Stock which
          would not constitute Disqualified Stock but for provisions thereof
          giving holders thereof the right to require the Corporation to
          repurchase or redeem such Preferred Stock upon the occurrence of a
          Change of Control occurring prior to February 1, 2009 shall not
          constitute Disqualified Stock if the change of control provisions
          applicable to such Preferred Stock are no more favorable to the
          holders of such Preferred Stock than the provisions contained in
          paragraph (h) hereof and such Preferred Stock specifically provides
          that the Corporation will not repurchase or redeem any such stock
          pursuant to such provisions prior to the Corporation's repurchase of
          such Senior Exchangeable Redeemable Preferred Shares as are required
          to be purchased pursuant to paragraph (h) hereof.

               "Dividend Payment Date" means February 1, May 1, August 1 and
          November 1, of each year.

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

               "Dividend Record Date" means January 15, April 15, July 15 and
          October 15 of each year.


                                       23



               "Eagle River" means Eagle River Investments, L.L.C., a limited
          liability company formed under the laws of the State of Delaware.

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

               "Exchange Date" means the date on which Senior Exchangeable
          Redeemable Preferred Shares are exchanged by the Corporation for
          Exchange Notes.

               "Exchange Notes" shall have the meaning ascribed to it in
          paragraph (g)(i) hereof.

               "Exchange Notice" shall have the meaning ascribed to it in
          paragraph (g)(ii) hereof.

               "Exchange Offer" means the exchange offer contemplated by the
          Registration Rights Agreement.

               "Exchange Shares" means any Senior Exchangeable Redeemable
          Preferred Shares issued in exchange for an Original Share or Original
          Shares pursuant to the Exchange Offer or otherwise registered under
          the Securities Act and any Senior Exchangeable Redeemable Preferred
          Shares with respect to which the next preceding Predecessor Shares of
          such Senior Exchangeable Redeemable Preferred Shares was an Exchange
          Share, and their Successor Shares.

               "Existing Notes" means the Corporation's $350,000,000 aggregate
          principal amount of 12 1/2% Senior Notes due April 15, 2006, as the
          same may be modified or amended from time to time.

               "Existing Indenture" means the Indenture governing the Existing
          Notes as such Indenture may be amended or supplemented from time to
          time in accordance with the terms thereof.

               "Guarantee" by any Person means any obligation, contingent or
          otherwise, of such Person guaranteeing, or having the economic effect
          of guaranteeing, any Debt of any other Person (the "primary obligor")
          in any manner, whether directly or indirectly, and including, without
          limitation, any obligation of such Person, (i) to purchase or pay (or
          advance or supply funds for the purchase or payment of) such Debt or
          to purchase (or to advance or supply funds for the purchase of) any
          security for the payment of such Debt, (ii) to purchase property,
          securities or services for the purpose of assuring the holder of such
          Debt of the payment of such Debt, or (iii) to maintain working
          capital, equity capital or other financial statement condition or
          liquidity of the primary obligor so as to enable the primary obligor
          to pay such Debt (and "Guaranteed", "Guaranteeing" and "Guarantor"
          shall have meanings correlative to the foregoing); provided, however,
          that the Guarantee by any Person shall not include endorsements by
          such Person for collection or deposit, in either case, in the ordinary
          course of business; and provided, further, that the incurrence by a
          Restricted Subsidiary of the Corporation of a lien permitted under
          clause (iv) of the second paragraph of Section 1011 of 


                                       24



          the Existing Indenture shall not be deemed to constitute a Guarantee
          by such Restricted Subsidiary of any Purchase Money Debt of the
          Corporation secured thereby.

               "Holder" means a holder of Senior Exchangeable Redeemable
          Preferred Shares as reflected in the share books of the Corporation.

               "Incur" means, with respect to any Debt or other obligation of
          any Person, to create, issue, incur (by conversion, exchange or
          otherwise), assume, Guarantee or otherwise become liable in respect of
          such Debt or other obligation including by acquisition of Subsidiaries
          or the recording, as required pursuant to generally accepted
          accounting principles or otherwise, of any such Debt or other
          obligation on the balance sheet of such Person (and "Incurrence",
          "Incurred", "Incurrable" and "Incurring" shall have meanings
          correlative to the foregoing); provided, however, that a change in
          generally accepted accounting principles that results in an obligation
          of such Person that exists at such time becoming Debt shall not be
          deemed an Incurrence of such Debt and that neither the accrual of
          interest nor the accretion of original issue discount shall be deemed
          an Incurrence of Debt; provided, further, however, that the
          Corporation may elect to treat all or any portion of revolving credit
          debt of the Corporation or a Subsidiary as being incurred from and
          after any date beginning the date the revolving credit commitment is
          extended to the Corporation or a Subsidiary, by furnishing notice
          thereof to the Transfer Agent, and any borrowings or reborrowings by
          the Corporation or a Subsidiary under such commitment up to the amount
          of such commitment designated by the Corporation as Incurred shall not
          be deemed to be new Incurrences of Debt by the Corporation or such
          Subsidiary.

               "Initial Dividend Period" means the dividend period commencing on
          the Issue Date and ending on the first Dividend Payment Date to occur
          thereafter.

               "Initial Purchaser" means Merrill Lynch, Pierce, Fenner & Smith
          Incorporated or Toronto Dominion Securities (USA) Inc.

               "Interest Rate or Currency Protection Agreement" of any Person
          means any forward contract, futures contract, swap, option or other
          financial agreement or arrangement (including, without limitation,
          caps, floors, collars and similar agreements) relating to, or the
          value of which is dependent upon, interest rates or currency exchange
          rates or indices.

               "Investment" by any Person means any direct or indirect loan,
          advance or other extension of credit or capital contribution (by means
          of transfers of cash or other property to others or payments for
          property or services for the account or use of others, or otherwise)
          to, or purchase or acquisition of Capital Stock, bonds, notes,
          debentures or other securities or evidence of Debt issued by, any
          other Person, including any payment on a Guarantee of any obligation
          of such other Person, but excluding any loan, advance or extension of
          credit to an employee of the Corporation or any of its Restricted
          Subsidiaries in the ordinary course of business, accounts receivable
          and other commercially reasonable extensions of trade credit.



                                       25


               "Issue Date" means the date of original issuance of the Senior
          Exchangeable Redeemable Preferred Shares.

               "Joint Venture" means a corporation, partnership or other entity
          engaged in one or more Telecommunications Businesses as to which the
          Corporation (directly or through one or more Restricted Subsidiaries)
          exercises managerial control and in which the Corporation owns (i) a
          50% or greater interest, or (ii) a 40% or greater interest, together
          with options or other contractual rights, exercisable not more than
          seven years after the Corporation's initial Investment in such Joint
          Venture, to increase its interest to not less than 50%.

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

               "Lien" means, with respect to any property or assets, any
          mortgage or deed of trust, pledge, hypothecation, assignment,
          Receivables Sale, deposit arrangement, security interest, lien,
          charge, easement (other than any easement not materially impairing
          usefulness or marketability), encumbrance, preference, priority or
          other security agreement or preferential arrangement of any kind or
          nature whatsoever on or with respect to such property or assets
          (including, without limitation, any conditional sale or other title
          retention agreement having substantially the same economic effect as
          any of the foregoing).

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

               "Offer to Purchase" means a written offer (the "Offer") sent by
          the Corporation by first class mail, postage prepaid, to each Holder
          at his address appearing in the records of the Corporation on the date
          of the Offer offering to purchase any and all of the Senior
          Exchangeable Redeemable Preferred Shares at the purchase price
          specified in such Offer (as determined pursuant to this Certificate of
          Designations). Unless otherwise required by applicable law, the Offer
          shall specify an expiration date (the "Expiration Date") of the Offer
          to Purchase which shall be, subject to any contrary requirements of
          applicable law, not less than 30 days or more than 60 days after the
          date of such Offer and a settlement date (the "Payment Date") for
          purchase of Senior Exchangeable Redeemable Preferred Shares within
          five Business Days after the Expiration Date. The Corporation shall
          notify the Transfer Agent at least 15 Business Days (or such shorter
          period as is acceptable to the Transfer Agent) prior to the mailing of
          the Offer of the Corporation's obligation to make an Offer to
          Purchase, and the Offer shall be mailed by the Corporation or, at the
          Corporation's request, by the Transfer Agent in the name and at the
          expense of the Corporation. The Offer shall contain information
          concerning the business of the Corporation and its Subsidiaries which
          the Corporation in good faith believes will enable such Holders to
          make an informed decision with respect to the Offer to Purchase (which
          at a minimum will include (i) the most recent annual and quarterly
          financial statements and "Management's Discussion and Analysis of
          Financial Condition and Results of Operations" contained in the
          documents required to be filed with the Securities and Exchange
          Commission or provided to the Transfer Agent pursuant to this
          Certificate of Designations (which requirements may be satisfied by
          delivery 


                                       26



          of such documents together with the Offer), (ii) a description of
          material developments in the Corporation's business subsequent to the
          date of the latest of such financial statements referred to in clause
          (i) (including a description of the events requiring the Corporation
          to make the Offer to Purchase), (iii) if applicable, appropriate pro
          forma financial information concerning the Offer to Purchase and the
          events requiring the Corporation to make the Offer to Purchase and
          (iv) any other information required by applicable law to be included
          therein). The Offer shall contain all instructions and materials
          necessary to enable such Holders to tender Senior Exchangeable
          Redeemable Preferred Shares pursuant to the Offer to Purchase. The
          Offer shall also state:

                    (a) the paragraph of this Certificate of Designations
               pursuant to which the Offer to Purchase is being made;

                    (b) the Expiration Date and the Payment Date;

                    (c) the purchase price to be paid by the Corporation for
               each Senior Exchangeable Redeemable Preferred Shares accepted for
               payment (as specified pursuant to this Certificate of
               Designations) (the "Purchase Price");

                    (d) that the Holder may tender all or any portion of the
               Senior Exchangeable Redeemable Preferred Shares registered in the
               name of such Holder;

                    (e) the place or places where Senior Exchangeable Redeemable
               Preferred Shares are to be surrendered for tender pursuant to the
               Offer to Purchase;

                    (f) that dividends on any Senior Exchangeable Redeemable
               Preferred Share not tendered or tendered but not purchased by the
               Corporation pursuant to the Offer to Purchase will continue to
               accrue;

                    (g) that on the Payment Date the Purchase Price will become
               due and payable upon each Senior Exchangeable Redeemable
               Preferred Share being accepted for payment pursuant to the Offer
               to Purchase and that dividends thereon shall cease to accrue on
               and after the Purchase Date;

                    (h) that each Holder electing to tender a Senior
               Exchangeable Redeemable Preferred Share pursuant to the Offer to
               Purchase will be required to surrender such Senior Exchangeable
               Redeemable Preferred Share at the place or places specified in
               the Offer prior to the close of business on the Expiration Date
               (such Senior Exchangeable Redeemable Preferred Share being, if
               the Corporation or the Transfer Agent so requires, duly endorsed
               by, or accompanied by a written instrument of transfer in form
               satisfactory to the Corporation and the Transfer Agent duly
               executed by, the Holder thereof or his attorney duly authorized
               in writing);

                    (i) that Holders will be entitled to withdraw all or any
               portion of Senior Exchangeable Redeemable Preferred Shares
               tendered if the Corporation (or its paying agent) receives not
               later than the close of business on the Expiration Date, a
               telegram, 


                                       27


               telex, facsimile transmission or letter setting forth the name of
               the Holder, the number of the Senior Exchangeable Redeemable
               Preferred Shares the Holder tendered, the certificate number(s)
               of the Senior Exchangeable Redeemable Preferred Shares the Holder
               tendered and a statement that such Holder is withdrawing all or a
               portion of his tender;

                    (j) that the Corporation shall purchase all Senior
               Exchangeable Redeemable Preferred Shares tendered;

                    (k) that in the case of any Holder whose Senior Exchangeable
               Redeemable Preferred Shares is purchased only in part, the
               Corporation shall issue and deliver to the Holder of such Senior
               Exchangeable Redeemable Preferred Share without service charge, a
               new Senior Exchangeable Redeemable Preferred Share or Senior
               Exchangeable Redeemable Preferred Share as requested by such
               Holder; and

                    (l) the CUSIP number or numbers of the Senior Exchangeable
               Redeemable Preferred Shares offered to be purchased by the
               Corporation pursuant to the Offer to Purchase.

               Any Offer to Purchase shall be governed by and effected in
               accordance with the Offer for such Offer to Purchase.

               "Officers' Certificate" means a certificate signed by (i) the
          Chief Executive Officer, President, an Executive Vice President or a
          Vice President, and (ii) the Treasurer, Assistant Treasurer, Secretary
          or an Assistant Secretary, of the Corporation and delivered to the
          Transfer Agent and containing the following:

                    (a) a statement that each individual signing such
               certificate has read such covenant or condition and the
               definitions herein relating thereto;

                    (b) 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;

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

                    (d) a statement as to whether, in the opinion of each such
               individual, such condition or covenant has been complied with.

               "Opinion of Counsel" means a written opinion of legal counsel,
          who may be counsel for the Corporation and containing the following
          statements:


                                       28



                    (a) a statement that such counsel has read such covenant or
               condition and the definitions herein relating thereto;

                    (b) 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;

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

                    (d) a statement as to whether, in the opinion of each such
               individual, such condition or covenant has been complied with.

               "Original Shares" means Senior Exchangeable Redeemable Preferred
          Shares that are not Exchange Shares.

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

               "Payment Date" shall have the meaning ascribed to it in the
          definition of Offer to Purchase.

               "Permitted Interest Rate or Currency Protection Agreement" of any
          Person means any Interest Rate or Currency Protection Agreement
          entered into with one or more financial institutions in the ordinary
          course of business that is designed to protect such Person against
          fluctuations in interest rates or currency exchange rates with respect
          to Debt Incurred and which shall have a notional amount no greater
          than the payments due with respect to the Debt being hedged thereby
          and not for purposes of speculation.

               "Person" means any individual, corporation, partnership, limited
          liability company, joint venture, association, joint stock company,
          trust, unincorporated organization, government or agency or political
          subdivision thereof or any other entity.

               "Predecessor Share" of any particular Senior Exchangeable
          Redeemable Preferred Share means every previous Senior Exchangeable
          Redeemable Preferred Share issued before, and evidencing all or a
          portion of the same interest as that evidenced by, such particular
          Senior Exchangeable Redeemable Preferred Share; and, for the purposes
          of this definition, any Senior Exchangeable Redeemable Preferred Share
          issued and delivered in exchange for or in lieu of a mutilated,
          destroyed, lost or stolen Senior Exchangeable Redeemable Preferred
          Share shall be deemed to evidence the same interest as the mutilated,
          destroyed, lost or stolen Senior Exchangeable Redeemable Preferred
          Share.

               "Preferred Stock" of any Person means 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 


                                       29



          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.

               "Public Equity Offering" means a underwritten public offering of
          common stock, par value $.02 per share, of the Corporation pursuant to
          an effective registration statement filed with the Securities and
          Exchange Commission in accordance with the Securities Act.

               "Purchase Money Debt" means (i) Acquired Debt Incurred in
          connection with the acquisition of Telecommunications Assets and (ii)
          Debt of the Corporation or of any Restricted Subsidiary of the
          Corporation (including, without limitation, Debt represented by
          Capital Lease Obligations, Vendor Financing Facilities, mortgage
          financings and purchase money obligations) Incurred for the purpose of
          financing all or any part of the cost of construction, acquisition or
          improvement by the Corporation or any Restricted Subsidiary of the
          Corporation or any Joint Venture of any Telecommunications Assets of
          the Corporation, any Restricted Subsidiary of the Corporation or any
          Joint Venture, and including any related notes, Guarantees, collateral
          documents, instruments and agreements executed in connection
          therewith, as the same may be amended, supplemented, modified or
          restated from time to time.

               "Qualified Junior Shares" shall mean Junior Shares that do not
          constitute Disqualified Stock.

               "Qualifying Event" means a Public Equity Offering or one or more
          Strategic Equity Investments which in either case results in aggregate
          net proceeds to the Corporation of not less than $75 million.

               "Quarterly Dividend Period" shall mean the quarterly period
          commencing on each February 1, May 1, August 1 and November 1 and
          ending on the next succeeding Dividend Payment Date, respectively.

               "Receivables" means receivables, chattel paper, instruments,
          documents or intangibles evidencing or relating to the right to
          payment of money in respect of the sale of goods or services.

               "Receivables Sale" of any Person means any sale of Receivables of
          such Person (pursuant to a purchase facility or otherwise), other than
          in connection with a disposition of the business operations of such
          Person relating thereto or a disposition of defaulted Receivables for
          purpose of collection and not as a financing arrangement.

               "Redemption Date", with respect to any Senior Exchangeable
          Redeemable Preferred Shares, means the date on which such Senior
          Exchangeable Redeemable Preferred Shares are redeemed by the
          Corporation.

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


                                       30




               "Restricted Subsidiary" of the Corporation means any Subsidiary,
          whether existing on or after the date of this Certificate of
          Designations, unless such Subsidiary is an Unrestricted Subsidiary.

               "Registration Rights Agreement" means that certain Preferred
          Exchange and Registration Rights Agreement, dated as of January 31,
          1997, by and between the Corporation and Merrill Lynch, Pierce, Fenner
          & Smith Incorporated and Toronto Dominion Securities (USA) Inc.

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

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

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

               "Strategic Equity Investment" means an investment in Qualified
          Junior Shares made by a Strategic Investor in an aggregate amount of
          not less than $25 million.

               "Strategic Investor" means a Person engaged in one or more
          Telecommunications Businesses (which need not be such Person's primary
          business) that has, or 80% or more of the Voting Stock of which is
          owned, directly or indirectly, by a Person that has, an equity market
          capitalization or net worth, at the time of its initial investment in
          the Corporation, in excess of $2.0 billion.

               "Subordinated Debt" means Debt of the Corporation as to which the
          payment of principal of (and premium, if any) and interest and other
          payment obligations in respect of such Debt shall be subordinate to
          the prior payment in full of the Exchange Notes, or the Existing Notes
          if the Exchange Notes have not yet been issued, to at least the
          following extent: (i) no payments of principal of (or premium, if any)
          or interest on or otherwise due in respect of such Debt may be
          permitted for so long as any default in the payment of principal (or
          premium, if any) or interest on the Exchange Notes or Existing Notes,
          as applicable, exists; (ii) in the event that any other default that
          with the passing of time or the giving of notice, or both, would
          constitute an Event of Default exists with respect to the Exchange
          Notes or the Existing Notes, as applicable, upon notice by 25% or more
          in principal amount of the Exchange Notes or the Existing Notes, as
          applicable, to the relevant trustee, the relevant trustee shall have
          the right to give notice to the Corporation and the holders of such
          Debt (or trustees or agents therefor) of a payment blockage, and
          thereafter no payments of principal of (or premium, if any) or
          interest on or otherwise due in respect of such Debt may be made for a
          period of 179 days from the date of such notice or for the period
          until such default has been cured or waived or ceased to exist and any
          acceleration of the Exchange Notes or the Existing Notes, as
          applicable, has been rescinded or annulled, whichever period is
          shorter (which Debt may provide (A) no new period of payment blockage
          may be commenced by a payment blockage notice unless and until 360
          days have elapsed since the 


                                       31



          effectiveness of the immediately prior notice, (B) no nonpayment
          default that existed or was continuing on the date of delivery of any
          payment blockage notice to such holders (or such agents or trustees)
          shall be, or be made, the basis for a subsequent payment blockage
          notice and (C) failure of the Corporation to make payment on such Debt
          when due or within any applicable grace period, whether or not on
          account of such payment blockage provisions, shall constitute an event
          of default thereunder); and (iii) such Debt may not (x) provide for
          payments of principal of such Debt at the stated maturity thereof or
          by way of a sinking fund applicable thereto or by way of any mandatory
          redemption, defeasance, retirement or repurchase thereof by the
          Corporation (including any redemption, retirement or repurchase which
          is contingent upon events or circumstances, but excluding any
          retirement required by virtue of acceleration of such Debt upon an
          event of default thereunder), in each case prior to the final Stated
          Maturity (as defined in the Existing Indenture) of the Exchange Notes
          or the Existing Notes, as applicable, or (y) permit redemption or
          other retirement (including pursuant to an offer to purchase made by
          the Corporation) of such other Debt at the option of the holder
          thereof prior to the final Stated Maturity (as defined in the Existing
          Indenture) of the Exchange Notes or the Existing Notes, as applicable,
          other than a redemption or other retirement at the option of the
          holder of such Debt (including pursuant to an offer to purchase made
          by the Corporation) which is conditioned upon a change of control of
          the Corporation pursuant to provisions substantially similar to those
          contained in paragraph (h) hereof (and which shall provide that such
          Debt will not be repurchased pursuant to such provisions prior to the
          Corporation's repurchase of the Exchange Notes or the Existing Notes,
          as applicable, required to be repurchased by the Corporation pursuant
          to the provisions of Section 1016 of the Existing Indenture or Section
          1016 of the Indenture, as applicable.

               "Subsidiary" of any Person means (i) a corporation more than 50%
          of the combined voting power of the outstanding 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
          Subsidiaries thereof or (ii) any other Person (other than a
          corporation) in which such Person, or one or more other Subsidiaries
          of such Person or such Person and one or more other Subsidiaries
          thereof, directly or indirectly, has at least a majority ownership and
          power to direct the policies, management and affairs thereof.

               "Successor Share" of any particular Senior Exchangeable
          Redeemable Preferred Share means every Senior Exchangeable Redeemable
          Preferred Share issued after, and evidencing all or a portion of the
          same interest as that evidenced by, such particular Senior
          Exchangeable Redeemable Preferred Share; and, for the purposes of this
          definition, any Senior Exchangeable Redeemable Preferred Share issued
          and delivered in exchange for or in lieu of a mutilated, destroyed,
          lost or stolen Senior Exchangeable Redeemable Preferred Share shall be
          deemed to evidence the same interest as the mutilated, destroyed, lost
          or stolen Senior Exchangeable Redeemable Preferred Share.

               "Telecommunications 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.


                                       32



               "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 a Telecommunication
          Business or (iii) evaluating, participating or pursuing any other
          activity or opportunity that is primarily related to those identified
          in (i) or (ii) above and shall, in any event, include all businesses
          in which the Corporation or any of its Subsidiaries are engaged on the
          Issue Date; provided that the determination of what constitutes a
          Telecommunications Business shall be made in good faith by the Board
          of Directors of the Corporation, which determination shall be
          conclusive.

               "Transfer Agent" means the transfer agent for the Senior
          Exchangeable Redeemable Preferred Shares designated by the Corporation
          from time to time.

               "Unrestricted Subsidiary" means (1) any Subsidiary of the
          Corporation designated as such by the Board of Directors as set forth
          below where (a) neither the Corporation nor any of its other
          Subsidiaries (other than another Unrestricted Subsidiary) (i) provides
          credit support for, or Guarantee of, any Debt of such Subsidiary or
          any Subsidiary of such Subsidiary (including any undertaking,
          agreement or instrument evidencing such Debt) or (ii) is directly or
          indirectly liable for any Debt of such Subsidiary or any Subsidiary of
          such Subsidiary, and (b) no default with respect to any Debt of such
          Subsidiary or any Subsidiary of such Subsidiary (including any right
          which the holders thereof may have to take enforcement action against
          such Subsidiary) would permit (upon notice, lapse of time or both) any
          holder of any other Debt of the Corporation and its Restricted
          Subsidiaries to declare a default on such other Debt or cause the
          payment thereof to be accelerated or payable prior to its final
          scheduled maturity and (2) any Subsidiary of an Unrestricted
          Subsidiary. The Board of Directors may designate any Subsidiary to be
          an Unrestricted Subsidiary unless such Subsidiary owns any Capital
          Stock of, or owns or holds any Lien on any property of, any other
          Subsidiary of the Corporation which is not a Subsidiary of the
          Subsidiary to be so designated or otherwise an Unrestricted
          Subsidiary, provided that either (x) the Subsidiary to be so
          designated has total assets of $1,000 or less or (y) immediately after
          giving effect to such designation, the Corporation could incur at
          least $1.00 of additional Debt pursuant to paragraph (l)(i) hereof.
          The Board of Directors may designate any Unrestricted Subsidiary to be
          a Restricted Subsidiary, provided that, immediately after giving
          effect to such designation, the Corporation could incur at least $1.00
          of additional Debt pursuant to the paragraph (l)(i) hereof.

               "Vendor Financing Facility" means any agreements between the
          Corporation or a Restricted Subsidiary of the Corporation and one or
          more vendors or lessors of equipment to the Corporation or any of its
          Restricted Subsidiaries (or any affiliate of any such vendor or
          lessor) providing financing for the acquisition by the Corporation or
          any such Restricted Subsidiary of equipment from any such vendor or
          lessor.


                                       33




               "Vice President", when used with respect to the Corporation means
          any vice president, whether or not designated by a number or a word or
          words added before or after the title "vice president".

               "Voting Stock" of any Person means Capital Stock of such Person
          which ordinarily has voting power for the election of directors (or
          persons performing similar functions) of such Person, whether at all
          times or only so long as no senior class of securities has such voting
          power by reason of any contingency.

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

               "Wholly-Owned Restricted Subsidiary" of any Person means a
          Restricted Subsidiary of such Person 99% or more of the outstanding
          Capital Stock or other ownership interests of which (other than
          directors' qualifying shares) shall at the time be owned by such
          Person or by one or more Wholly-Owned Restricted Subsidiaries of such
          Person or by such Person and one or more Wholly-Owned Restricted
          Subsidiaries of such Person.

          (n) Restrictions on Transfer.

               (i) Each Original Share shall contain a legend substantially to
          the following effect until the Resale Restriction Termination Date (as
          defined below) unless the Corporation determines otherwise:

               THESE SECURITIES HAVE 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 REOFFERED, 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 AND SUBJECT TO COMPLIANCE
               WITH OTHER APPLICABLE LAWS. THE HOLDER OF THIS SECURITY BY ITS
               ACCEPTANCE HEREOF AGREES TO OFFER, SELL OR OTHERWISE TRANSFER
               SUCH SECURITY, PRIOR TO THE DATE WHICH IS THREE YEARS AFTER THE
               LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON
               WHICH THE CORPORATION OR ANY AFFILIATE OF THE CORPORATION WAS THE
               OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF THIS SECURITY) (THE
               "RESALE RESTRICTION TERMINATION DATE"), ONLY (A) TO THE
               CORPORATION; (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS
               BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (C) FOR SO LONG
               AS THESE SECURITIES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A
               UNDER THE SECURITIES ACT 


                                       34



               ("RULE 144A"), TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED
               INSTITUTIONAL BUYER" AS DEFINED IN RULE 144A THAT PURCHASES FOR
               ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL
               BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN
               RELIANCE ON RULE 144A, (D) PURSUANT TO AN EXEMPTION FROM
               REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144, (E)
               PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR
               OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S
               UNDER THE SECURITIES ACT OR (F) IN THE CASE OF EITHER ANY INITIAL
               INVESTOR THAT IS A QUALIFIED INSTITUTIONAL BUYER OR ANY
               SUBSEQUENT INVESTOR, TO AN INSTITUTIONAL "ACCREDITED INVESTOR"
               WITHIN THE MEANING OF SUBPARAGRAPH (a)(1), (2), (3) or (7) OF
               RULE 501 UNDER THE SECURITIES ACT PURSUANT TO AN EXEMPTION FROM
               REGISTRATION UNDER THE SECURITIES ACT (IF AVAILABLE), AND
               OTHERWISE IN COMPLIANCE WITH OTHER APPLICABLE LAWS, SUBJECT TO
               THE CORPORATION'S AND THE TRANSFER AGENT AND REGISTRAR'S RIGHT
               PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (C),
               (D), (E) OR (F) TO REQUIRE THE DELIVERY OF A TRANSFER CERTIFICATE
               AND IN THE CASE OF CLAUSE (F) AN OPINION OF COUNSEL OR OTHER
               INFORMATION SATISFACTORY TO EACH OF THEM. THE LEGEND WILL BE
               REMOVED UPON THE REQUEST OF A HOLDER AFTER THE RESALE RESTRICTION
               TERMINATION DATE.

               (ii) If prior to the Resale Restriction Termination Date (or such
          shorter period as may be prescribed by Rule 144(k) under the
          Securities Act (or any successor thereto)) a Holder of Original Shares
          that acquired Senior Exchangeable Redeemable Preferred Shares from an
          Initial Purchaser in a sale that was not made in reliance upon Rule
          144A under the Securities Act wishes to transfer such Original Shares,
          such transfer may be effected only upon receipt by the Corporation or
          the Transfer Agent of a certificate substantially in the form of
          Exhibit A hereto duly executed by such Holder or his attorney duly
          authorized in writing.

          IN WITNESS WHEREOF, said New NEXTLINK Communications, Inc. has caused
this Certificate to be signed by R. Bruce Easter, Jr., its Vice President, this
29th day of May, 1998.

                                            NEW NEXTLINK COMMUNICATIONS, INC.

                                            By:      /s/ R. Bruce Easter, Jr.
                                                     Name:  R. Bruce Easter, Jr.
                                                     Title: Vice President