ARCH COMMUNICATIONS GROUP INC /DE/
8-K, 1999-11-19
RADIOTELEPHONE COMMUNICATIONS
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


Date of Report (Date of earliest event reported): November 7, 1999


                         ARCH COMMUNICATIONS GROUP, INC.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


          Delaware                     0-23232                   31-1358569
- ----------------------------         ------------           -------------------
(State or other jurisdiction         (Commission              (I.R.S. Employer
     of incorporation)               File Number)           Identification No.)


    1800 West Park Drive, Suite 250
            Westborough, MA                                         01581
- ----------------------------------------                    -------------------
(Address of principal executive offices)                          (Zip Code)

Registrant's telephone number, including are code: (508) 870-6700


                                 Not Applicable
- --------------------------------------------------------------------------------
          (Former name or former address, if changed since last report)





<PAGE>   2
ITEM 5.  OTHER EVENTS.

         5.1      On November 7, 1999, Arch Communications Group, Inc. ("Arch")
signed a definitive agreement (the "Merger Agreement") with Paging Network, Inc.
("PageNet") pursuant to which PageNet will merge with a wholly owned subsidiary
of Arch (the "Merger"). The combined company will retain the name Arch
Communications Group, Inc.

                  The Merger Agreement requires a recapitalization of the
combined company. In the recapitalization, Arch will make an exchange offer of
shares of Arch common stock for all of its Senior Discount Notes, which as of
September 30, 1999 had an accreted value of approximately $384 million. Arch
will also convert outstanding shares of Series C Convertible Preferred Stock,
with a value of approximately $28 million as of September 30, 1999, into shares
of its common stock. PageNet will make an exchange offer of PageNet common stock
for Senior Notes having an aggregate outstanding principal amount of $1.2
billion. Owners of common stock of Arch and PageNet will receive common stock in
the combined company, with shareholders of Arch retaining one share of common
stock in the combined company for each share of Arch, and shareholders of
PageNet receiving 0.1247 shares of common stock in the combined company for each
share of PageNet. In addition, owners of PageNet's common stock and Senior Notes
will receive a pro rata distribution of 80.5 percent of PageNet's interest in
Vast Solutions, which will become a separate entity upon the close of the
Merger.

         5.2      In connection with the Merger, the Board of Directors of Arch
has approved an amendment to its Rights Agreement, dated as of November 15,
1999.

         5.3      On November 8, 1999, Arch and PageNet issued a joint press
release relating to the Merger Agreement.





<PAGE>   3
EXHIBIT INDEX

         99.1     Agreement and Plan of Merger, dated as of November 7, 1999,
                  among Paging Network, Inc., Arch Communications Group, Inc.
                  and St. Louis Acquisition Corp.

         99.2     Amendment No. 5 to the Rights Agreement, dated as of
                  November 15, 1999, between Arch Communications Group, Inc.
                  and the Bank of New York as Rights Agent.

         99.3     Text of Joint Press Release, dated November 8, 1999, issued by
                  Arch Communications Group, Inc. and Paging Network, Inc.











<PAGE>   4
                                    SIGNATURE


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



Date:  November 19, 1999                ARCH COMMUNICATIONS GROUP, INC.



                                        By: /s/ Gerald J. Cimmino
                                            -----------------------------------
                                            Title: Vice President and Treasurer

































<PAGE>   1
                                                                    Exhibit 99.1












                          AGREEMENT AND PLAN OF MERGER

                                      among

                              PAGING NETWORK, INC.,

                         ARCH COMMUNICATIONS GROUP, INC.

                                       and

                           ST. LOUIS ACQUISITION CORP.













                          Dated as of November 7, 1999





<PAGE>   2
                                TABLE OF CONTENTS


                                   ARTICLE I.

                       The Merger; Closing; Effective Time


1.1.   The Merger............................................................ 1
1.2.   Closing............................................................... 2
1.3.   Effective Time........................................................ 2

                                   ARTICLE II.

      Certificate of Incorporation and Bylaws of the Surviving Corporation

2.1.   The Certificate of Incorporation...................................... 2
2.2.   The Bylaws............................................................ 2

                                  ARTICLE III.

                              Directors & Officers

3.1.   Directors of Arch..................................................... 3
3.2.   Directors of the Surviving Corporation................................ 3
3.3.   Officers of the Surviving Corporation................................. 3

                                   ARTICLE IV.

         Effect of the Merger on Capital Stock; Exchange of Certificates

4.1.   Effect on Capital Stock............................................... 3
4.2.   Exchange of Certificates for Shares................................... 4
4.3.   Dissenters' Rights.................................................... 7
4.4.   Adjustments to Prevent Dilution....................................... 7
4.5.   Alternate Transaction Structure....................................... 7

                                   ARTICLE V.

                         Representations and Warranties




                                        i


<PAGE>   3
5.1.   Representations and Warranties of PageNet, Arch and Merger Sub........  8

                                   ARTICLE VI.

                                    Covenants

6.1.   Interim Operations.................................................... 23
6.2.   Acquisition Proposals................................................. 28
6.3.   The Certificate Amendments............................................ 30
6.4.   Information Supplied.................................................. 30
6.5.   Stockholders Meetings................................................. 31
6.6.   Filings; Other Actions; Notification.................................. 33
6.7.   Access; Consultation.................................................. 35
6.8.   Affiliates............................................................ 35
6.9.   Stock Exchange Listing................................................ 35
6.10.  Publicity............................................................. 36
6.11.  Benefits.............................................................. 36
6.12.  Expenses.............................................................. 37
6.13.  Indemnification; Directors' and Officers' Insurance................... 37
6.14.  Takeover Statute...................................................... 39
6.15.  Confidentiality....................................................... 39
6.16.  Tax-Free Reorganization............................................... 39
6.17.  Senior Credit Facilities.............................................. 39
6.18.  The Exchange Offers................................................... 40
6.19.  Bankruptcy Provisions................................................. 45
6.20.  Rights Agreement...................................................... 51
6.21.  Preferred Stock....................................................... 51
6.22.  Spinoff .............................................................. 52

                                  ARTICLE VII.

                                   Conditions

7.1.   Conditions to Each Party's Obligation to Effect the Merger............ 52
7.2.   Conditions to Obligations of Arch and Merger Sub...................... 54
7.3.   Conditions to Obligation of PageNet................................... 56

                                  ARTICLE VIII.

                                   Termination




                                       ii

<PAGE>   4
8.1.   Termination by Mutual Consent......................................... 57
8.2.   Termination by Either Arch or PageNet................................. 58
8.3.   Termination by PageNet................................................ 58
8.4.   Termination by Arch................................................... 58
8.5.   Effect of Termination and Abandonment................................. 59

                        ARTICLE IX.

                 Miscellaneous and General

9.1.   Survival.............................................................. 61
9.2.   Modification or Amendment............................................. 61
9.3.   Waiver of Conditions.................................................. 62
9.4.   Counterparts.......................................................... 62
9.5.   Governing Law and Venue; Waiver of Jury Trial......................... 62
9.6.   Notices............................................................... 63
9.7.   Entire Agreement...................................................... 64
9.8.   No Third Party Beneficiaries.......................................... 64
9.9.   Obligations of Arch and of PageNet.................................... 64
9.10.  Severability.......................................................... 65
9.11.  Interpretation........................................................ 65
9.12.  Captions.............................................................. 65
9.13.  Assignment............................................................ 65


                           Exhibits

Certificate of Incorporation of the Surviving Corporation............. Exhibit A
Arch Rights Agreement Amendment....................................... Exhibit B
PageNet Affiliates Agreement.......................................... Exhibit C




                                       iii


<PAGE>   5
                             Index of Defined Terms

Term                                                                     Section
- ----                                                                     -------

Acquisition Proposal..................................................... 6.2(a)
Agreement.............................................................. preamble
Alternative Merger.......................................................... 4.5
Alternative Merger Notice................................................... 4.5
Arch..................................................................  preamble
Arch Class B Common Stock............................................ 5.1(b)(ii)
Arch Common Stock........................................................ 4.1(a)
Arch Companies........................................................... 4.1(a)
Arch Conditions to the Prepackaged Plan.................................... 6.19
Arch Disclosure Letter...................................................... 5.1
Arch Exchange Offer..................................................... 6.18(a)
Arch Exchange Prospectus................................................ 6.18(d)
Arch Exchange Registration Statement.................................... 6.18(d)
Arch Minimum Condition.................................................. 6.18(b)
Arch Notes.............................................................. 6.18(a)
Arch Preferred Shares................................................ 5.1(b)(ii)
Arch Required Consents...............................................  5.1(d)(i)
Arch Requisite Vote.................................................. 5.1(c)(ii)
Arch Rights Agreement................................................ 5.1(b)(ii)
Arch Series B Preferred Share........................................ 5.1(b)(ii)
Arch Series C Preferred Share........................................ 5.1(b)(ii)
Arch Stock Plans..................................................... 5.1(b)(ii)
Arch Stockholders Approval............................................... 6.5(b)
Arch Stockholders Meeting................................................ 6.5(b)
Arch Termination Fee..................................................... 8.5(c)
Audit Date............................................................... 5.1(f)
Bankruptcy and Equity Exception....................................... 5.1(c)(i)
Bankruptcy Case............................................................ 6.19
Bankruptcy Code............................................................ 6.19
Bankruptcy Court........................................................... 6.19
Bylaws...................................................................... 2.2
Certificate.............................................................  4.1(a)
Certificate Amendments................................................. recitals
Certificate of Merger....................................................... 1.3
Charter..................................................................... 2.1
Closing..................................................................... 1.2
Closing Date................................................................ 1.2




                                       iv

<PAGE>   6
Code................................................................... recitals
Communications Act.................................................... 5.1(d)(i)
Compensation and Benefit Plans........................................ 5.1(h)(i)
Confidentiality Agreement.................................................. 6.15
Contracts............................................................ 5.1(d)(ii)
Costs................................................................... 6.13(a)
Current Premium......................................................... 6.13(c)
D&O Insurance........................................................... 6.13(c)
Delaware Courts.......................................................... 9.5(a)
DGCL........................................................................ 1.1
Disclosure Letter........................................................... 5.1
Dismissal Order...................................................... 6.19(a)(v)
Distributed Interests...................................................... 6.22
Distributed Subsidiary..................................................... 6.22
Effective Time.............................................................. 1.3
Environmental Law........................................................ 5.1(n)
ERISA................................................................. 5.1(h)(i)
ERISA Affiliate....................................................... 5.1(h)(i)
Exchange Act.......................................................... 5.1(b)(i)
Exchange Agent........................................................... 4.2(a)
Exchange Offers......................................................... 6.18(a)
Exchange Offers Expiration Date......................................... 6.18(h)
Exchange Ratio........................................................... 4.1(a)
Exchange Prospectus..................................................... 6.18(d)
Exchange Registration Statements........................................ 6.18(d)
Excluded PageNet Shares.................................................. 4.1(a)
Exclusivity Provision................................................... 6.19(d)
Exit Financing............................................................. 6.19
Extended Determination Date........................................ 6.19(a)(iii)
FCC................................................................... 5.1(d)(i)
FCC Regulations....................................................... 5.1(d)(i)
Final Confirmation Order................................................... 6.19
Final Order.............................................................. 7.1(c)
GAAP..................................................................... 5.1(e)
Governmental Entity................................................... 5.1(d)(i)
Governmental Regulations.............................................. 5.1(d)(i)
Hazardous Substance...................................................... 5.1(n)
HSR Act............................................................... 5.1(d)(i)
Indemnified Parties..................................................... 6.13(a)
Indenture Amendments.................................................... 6.18(c)
Initial Determination Date................................................. 6.19



                                        v

<PAGE>   7
Initial Merger Motion................................................... 6.19(d)
Initial Merger Order.................................................... 6.19(d)
Interim Financing.......................................................... 6.19
Involuntary Insolvency Event......................................... 6.19(a)(v)
Involuntary Insolvency Event Date.................................... 6.19(a)(v)
IRS.................................................................. 5.1(h)(ii)
Knowledgeable Executives................................................. 5.1(g)
Laws..................................................................... 5.1(i)
Material Adverse Effect.................................................. 5.1(a)
Merger................................................................. recitals
Merger Consideration..................................................... 4.1(a)
Merger Sub............................................................. preamble
NASDAQ...................................................................... 6.9
Note Consents........................................................... 6.18(b)
Note Waivers............................................................ 6.18(c)
Notes................................................................... 6.18(a)
Notes Exchange Agent.................................................... 6.18(i)
Order.................................................................... 7.1(d)
PageNet................................................................ preamble
PageNet Affiliates Agreement................................................ 6.8
PageNet Conditions to the Prepackaged Plan................................. 6.19
PageNet Disclosure Letter................................................... 5.1
PageNet Exchange Offer.................................................. 6.18(a)
PageNet Exchange Prospectus............................................. 6.18(d)
PageNet Minimum Condition............................................... 6.18(b)
PageNet Notes........................................................... 6.18(a)
PageNet Option....................................................... 6.11(a)(i)
PageNet Required Consents............................................. 5.1(d)(i)
PageNet Rights Agreement.............................................. 5.1(b)(i)
PageNet Secured Creditors.................................................. 6.17
PageNet Share............................................................ 4.1(a)
PageNet Stock Plans................................................... 5.1(b)(i)
PageNet Stockholders Approval............................................ 6.5(a)
PageNet Stockholders Meeting............................................. 6.5(a)
PageNet Termination Fee.................................................. 8.5(b)
Pension Plan......................................................... 5.1(h)(ii)
Permits.................................................................. 5.1(i)
Person................................................................... 4.2(a)
Prepackaged Plan........................................................... 6.19
Prospectus/Proxy Statement.................................................. 6.4
PUC................................................................... 5.1(d)(i)




                                       vi


<PAGE>   8
Reports.................................................................. 5.1(e)
Representatives.......................................................... 6.2(a)
Requisite Bankruptcy Vote of the PageNet Notes............................. 6.19
Requisite Bankruptcy Vote of the PageNet Secured Creditors................. 6.19
Requisite Conditions to the Prepackaged Plan............................... 6.19
Rule 145 Affiliates......................................................... 6.8
S-4 Registration Statement.................................................. 6.4
SEC...................................................................... 5.1(e)
Section 16 Person ................................................. 6.11(a)(iii)
Securities Act........................................................ 5.1(d)(i)
Series C Consent Agreement ............................................. 6.21(a)
Series C Consideration ................................................. 6.21(a)
Series C Exchange Ratio ................................................ 6.21(a)
Significant Investees ............................................... 5.1(d)(ii)
Significant Subsidiaries.............................................. 5.1(b)(i)
Spinoff.................................................................... 6.22
Spinoff Dividend........................................................... 6.22
Spinoff Record Date........................................................ 6.22
State Laws............................................................ 5.1(d)(i)
Subsidiary............................................................... 5.1(a)
Substitute Option.................................................... 6.11(a)(i)
Superior Proposal........................................................ 6.2(a)
Surviving Corporation....................................................... 1.1
Takeover Statute......................................................... 5.1(j)
Tax...................................................................... 5.1(l)
Tax Return............................................................... 5.1(l)
Taxable.................................................................. 5.1(l)
Termination Date............................................................ 8.2



                                       vii


<PAGE>   9
                          AGREEMENT AND PLAN OF MERGER

         This AGREEMENT AND PLAN OF MERGER ("AGREEMENT"), dated as of November
7, 1999, is among PAGING NETWORK, INC., a Delaware corporation ("PAGENET"), ARCH
COMMUNICATIONS GROUP, INC., a Delaware corporation ("ARCH"), and ST. LOUIS
ACQUISITION CORP., a Delaware corporation that is a wholly owned subsidiary of
Arch ("MERGER SUB").

                                    RECITALS

         WHEREAS, the respective Boards of Directors of each of Arch, Merger Sub
and PageNet have approved, recommended and declared advisable this Agreement and
the merger of Merger Sub with and into PageNet (the "MERGER") upon the terms and
subject to the conditions set forth in this Agreement;

         WHEREAS, the parties hereto intend, by executing and delivering this
Agreement, to adopt a plan of reorganization within the meaning of Section
368(a) of the Internal Revenue Code of 1986, as amended (the "CODE"), and to
cause the Merger and the other transactions which are part of this plan of
reorganization to qualify as a "reorganization" as therein defined;

         WHEREAS, the Arch Board of Directors has approved, recommended and
declared advisable certain amendments to its Certificate of Incorporation to
effectuate the actions described herein (the "CERTIFICATE AMENDMENTS"),
contemporaneously upon and in connection with the Merger;

         WHEREAS, Arch, Merger Sub and PageNet desire to make certain
representations, warranties, covenants and agreements in connection with this
Agreement.

         NOW, THEREFORE, in consideration of the premises, and of the
representations, warranties, covenants and agreements contained in this
Agreement, the parties hereto agree as follows:

                                   ARTICLE I.

                       THE MERGER; CLOSING; EFFECTIVE TIME

         1.1.     THE MERGER. Upon the terms and subject to the conditions set
forth in this Agreement, at the Effective Time (as defined in Section 1.3),
Merger Sub shall be merged with and into PageNet and the separate corporate
existence of Merger Sub shall thereupon cease. PageNet shall be the surviving
corporation in the Merger (sometimes referred to as the "SURVIVING CORPORATION")
and shall continue to be governed by the laws of the State of Delaware, and the





<PAGE>   10
separate corporate existence of PageNet with all its rights, privileges,
immunities, powers and franchises shall continue unaffected by the Merger,
except as set forth in Article III of this Agreement. The Merger shall have the
effects specified in the Delaware General Corporation Law, as amended (the
"DGCL").

         1.2.     CLOSING. The closing of the Merger (the "CLOSING") shall take
place: (i) at the offices of Hale and Dorr LLP, 60 State Street, Boston,
Massachusetts, at 9:00 A.M., local time, on the second business day after the
date on which the last to be fulfilled or waived of the conditions set forth in
Article VII (other than those conditions that by their nature are to be
satisfied at the Closing, but subject to the fulfillment or waiver of those
conditions) shall be satisfied or waived in accordance with this Agreement; or
(ii) at such other place and time and/or on such other date as Arch and PageNet
may agree in writing (the "CLOSING DATE").

         1.3.     EFFECTIVE TIME. At the Closing, Arch and PageNet will cause a
Certificate of Merger (the "CERTIFICATE OF MERGER") to be executed,
acknowledged, and filed with the Secretary of State of the State of Delaware as
provided in Section 251 of the DGCL. The Merger shall become effective at the
time when the Certificate of Merger has been duly filed with the Secretary of
State of the State of Delaware or such other later time as shall be agreed upon
by the parties and set forth in the Certificate of Merger in accordance with the
DGCL (the "EFFECTIVE TIME").

                                   ARTICLE II.

      CERTIFICATE OF INCORPORATION AND BYLAWS OF THE SURVIVING CORPORATION

         2.1.     THE CERTIFICATE OF INCORPORATION. The certificate of
incorporation of PageNet, amended and restated in its entirety as set forth in
EXHIBIT A, shall be the certificate of incorporation of the Surviving
Corporation (the "CHARTER"), until duly amended as provided therein or by
applicable law.

         2.2.     THE BYLAWS. The bylaws of Merger Sub, as in effect immediately
prior to the Effective Time, shall be the bylaws of the Surviving Corporation
(the "BYLAWS"), until thereafter amended as provided therein or by applicable
law.





                                        2


<PAGE>   11
                                  ARTICLE III.

                              DIRECTORS & OFFICERS

         3.1.     DIRECTORS OF ARCH. Arch shall take all actions necessary
(subject to applicable law and any necessary stockholder approval) to cause, at
the Effective Time, the number of directors comprising the full Board of
Directors of Arch to be comprised of twelve directors, six of which shall be
nominated by the Board of Directors of Arch, and six of which shall be nominated
by the Board of Directors of PageNet, each such person to serve from the
Effective Time until his or her successor has been duly elected and qualified,
or until his or her earlier death, resignation, or removal in accordance with
the Charter and the Bylaws; PROVIDED, HOWEVER, that of the six directors
nominated by the Board of Directors of PageNet, one shall be designated by each
of the three holders of PageNet Notes holding the greatest percentage in
aggregate principal amount of the PageNet Notes; and if and to the extent that
any such holder declines to make such designation, the number of directors
nominated by the Board of Directors of PageNet shall be decreased and the number
of directors nominated by the Board of Directors of Arch shall be increased. The
directors nominated by PageNet shall be divided as nearly evenly as is possible
among the classes of directors of Arch.

         3.2.     DIRECTORS OF THE SURVIVING CORPORATION. The directors of
Merger Sub at the Effective Time shall, from and after the Effective Time, be
the directors of the Surviving Corporation until his or her successor has been
duly elected and qualified, or until his or her earlier death, resignation, or
removal in accordance with the Charter and the Bylaws;

         3.3.     OFFICERS OF THE SURVIVING CORPORATION. The officers of PageNet
at the Effective Time shall at the Effective Time, be the officers of the
Surviving Corporation until his or her successor has been duly elected and
qualified, or until their earlier death, resignation, or removal in accordance
with the Charter and the Bylaws.

                                   ARTICLE IV.

         EFFECT OF THE MERGER ON CAPITAL STOCK; EXCHANGE OF CERTIFICATES

         4.1.     EFFECT ON CAPITAL STOCK. At the Effective Time, the Merger
shall have the following effects on the capital stock of Arch, Merger Sub and
PageNet, without any action on the part of the holder of any capital stock of
Arch, Merger Sub or PageNet:

                  (a)      MERGER CONSIDERATION. Each share of common stock, par
         value $0.01 per share, of PageNet (each, a "PAGENET SHARE") issued and
         outstanding immediately prior to the Effective Time (excluding PageNet
         Shares (collectively, "EXCLUDED PAGENET SHARES") that are owned by
         Arch, Merger Sub or any direct or indirect, wholly owned subsidiary of



                                        3


<PAGE>   12


         Arch or Merger Sub (collectively, the "ARCH COMPANIES")), shall be
         converted into and become exchangeable for 0.1247 of a share (the
         "EXCHANGE RATIO") of common stock, par value $0.01 per share, of Arch
         (the "ARCH COMMON STOCK"), subject to adjustment as provided in Section
         4.4, (the "MERGER CONSIDERATION"). At the Effective Time, all PageNet
         Shares shall no longer be outstanding, shall be canceled and retired
         and shall cease to exist, and each certificate (a "CERTIFICATE")
         formerly representing any of such PageNet Shares (other than Excluded
         PageNet Shares) shall thereafter represent only the right to receive
         the Merger Consideration and the right, if any, to receive a
         distribution or dividend pursuant to Section 4.2(b)(i), in each case
         without interest, or to vote pursuant to Section 4.2(b)(ii).

                  (b)      CANCELLATION OF EXCLUDED PAGENET SHARES. At the
         Effective Time, each Excluded PageNet Share shall no longer be
         outstanding, shall be canceled and retired without payment of any
         consideration therefor, and shall cease to exist.

                  (c)      MERGER SUB CAPITAL STOCK. At the Effective Time, each
         share of Common Stock, par value $0.01 per share, of Merger Sub issued
         and outstanding immediately prior to the Effective Time shall be
         converted into one share of common stock of the Surviving Corporation,
         and the Surviving Corporation shall thereby become a wholly owned
         subsidiary of Arch.

         4.2.     EXCHANGE OF CERTIFICATES FOR SHARES.

                  (a)      EXCHANGE PROCEDURES. Promptly after the Effective
         Time, Arch shall cause its transfer agent or another exchange agent
         selected by Arch with PageNet's prior approval (the "EXCHANGE AGENT"),
         which shall not be unreasonably withheld, to mail to each holder of
         record as of the Effective Time of a Certificate: (i) a letter of
         transmittal specifying that delivery of the Certificates shall be
         effected, and that risk of loss and title to the Certificates shall
         pass, only upon delivery of the Certificates (or affidavits of loss in
         lieu thereof) to the Exchange Agent in accordance with the terms and
         conditions of such letter of transmittal, such letter of transmittal to
         be in such form and have such other provisions as Arch and PageNet may
         reasonably agree; and (ii) instructions for exchanging the Certificates
         for: (A) certificates representing shares of Arch Common Stock; and (B)
         any unpaid dividends and other distributions due to such holder with
         respect to such shares, including, with respect to holders of PageNet
         Shares at the Spinoff Record Date (as defined in Section 6.22), the
         Distributed Interests (as defined in Section 6.22). Subject to Section
         4.2(g), upon proper surrender of a Certificate for cancellation (or
         affidavits of loss in lieu thereof) to the Exchange Agent together with
         such letter of transmittal, duly executed, the holder of such
         Certificate shall be entitled to receive in exchange therefor: (x) a
         certificate representing that number of shares of Arch Common Stock
         that such holder is entitled to receive pursuant to this Article IV
         and, with respect to PageNet Shares at the Spinoff Record Date,
         certificates representing the Distributed Interests that such holder is





                                        4


<PAGE>   13
         entitled pursuant to Section 6.22; and (y) a check in the amount (after
         giving effect to any required tax withholdings) of any dividends or
         other distributions that such holder has the right to receive pursuant
         to the provisions of this Article IV. The Certificate so surrendered
         shall forthwith be canceled. No interest will be paid or accrued on any
         amount payable upon due surrender of any Certificate. In the event of a
         transfer of ownership of PageNet Shares that is not registered in the
         transfer records of PageNet, a certificate representing the proper
         number of shares of Arch Common Stock and, with respect to PageNet
         Shares at the Spinoff Record Date, certificates representing the
         Distributed Interests, together with a check for any dividends or
         distributions with respect thereto, may be issued and/or paid to such a
         transferee if the Certificate formerly representing such PageNet Shares
         is presented to the Exchange Agent, accompanied by all documents
         required to evidence and effect such transfer and to evidence that all
         applicable stock transfer taxes have been paid. If any certificate for
         shares of Arch Common Stock is to be issued in a name other than that
         in which the Certificate surrendered in exchange therefor is
         registered, it shall be a condition of such exchange that the Person
         (as defined below) requesting such exchange shall pay all transfer and
         other taxes required by reason of the issuance of certificates for
         shares of Arch Common Stock and/or Distributed Interests in a name
         other than that of the registered holder of the Certificate
         surrendered, or shall establish to the satisfaction of Arch or the
         Exchange Agent that such tax has been paid or is not applicable.

         The term "PERSON" means any individual, corporation (including
not-for-profit), general or limited partnership, limited liability company,
joint venture, estate, trust, association, organization, Governmental Entity (as
defined in Section 5.1(d)(i)), or other entity of any kind or nature.

                  (b)      DISTRIBUTIONS WITH RESPECT TO UNEXCHANGED SHARES;
         VOTING.

                           (i)      Whenever a dividend or other distribution is
         declared by Arch with respect to Arch Common Stock, the record date for
         which is at or after the Effective Time, that declaration shall include
         dividends or other distributions with respect to all shares of Arch
         Common Stock issuable pursuant to this Agreement. No dividends or other
         distributions with respect to such Arch Common Stock shall be paid to
         any holder of any unsurrendered Certificate until such Certificate is
         surrendered for exchange in accordance with this Article IV. Subject to
         the effect of applicable Laws, following surrender of any such
         Certificate, there shall be issued or paid to the holder of the
         certificates representing shares of Arch Common Stock issued in
         exchange therefor, without interest: (A) at the time of such surrender,
         the dividends or other distributions with a record date after the
         Effective Time and a payment date on or prior to the date of issuance
         of such shares of Arch Common Stock and not previously paid; and (B) at
         the appropriate payment date, the dividends or other distributions
         payable with respect to such shares of Arch Common Stock with a record
         date after the Effective Time and prior to the date of issuance of such
         shares of Arch Common Stock but with a payment date subsequent to
         surrender. For



                                        5


<PAGE>   14
         purposes of dividends or other distributions with respect to shares of
         Arch Common Stock, all such shares to be issued pursuant to the Merger
         shall be deemed issued and outstanding as of the Effective Time.

                           (ii)     At any meeting of stockholders of Arch with
         a record date at or after the Effective Time, registered holders of
         unsurrendered Certificates shall be entitled to vote the number of
         shares of Arch Common Stock represented by such Certificates,
         regardless of whether such holders have exchanged their Certificates;
         PROVIDED, HOWEVER, that any such vote shall be at the times, upon the
         conditions, and in the manner prescribed by the certificate of
         incorporation and bylaws of Arch.

                  (c)      TRANSFERS. From and after the Effective Time, there
         shall be no transfers of PageNet Shares or Arch Series C Preferred
         Shares that were outstanding immediately prior to the Effective Time
         recorded on the stock transfer books of PageNet or Arch, as the case
         may be.

                  (d)      FRACTIONAL SHARES. Notwithstanding any other
         provision of this Agreement to the contrary, no certificates or scrip
         representing fractional shares of Arch Common Stock will be issued in
         the Merger, but in lieu thereof, each holder of Certificates otherwise
         entitled to a fractional share of Arch Common Stock will be entitled to
         receive, from the Exchange Agent in accordance with the provisions of
         this Section 4.2(d), a cash payment in lieu of such fractional shares
         of Arch Common Stock determined by multiplying such fraction (rounded
         to the nearest one-hundredth of a share) by the average closing price
         of a share of Arch Common Stock, as reported in The Wall Street
         Journal, New York City edition, on the ten (10) days immediately prior
         to the Effective Time. As soon as practicable after the determination
         of the amount of cash, if any, to be paid to the holders of
         Certificates in lieu of any fractional shares of Arch Common Stock, the
         Exchange Agent shall make available such amounts of cash to such
         holders of Certificates, without interest thereon.

                  (e)      TERMINATION OF EXCHANGE PERIOD; UNCLAIMED STOCK. Any
         shares of Arch Common Stock, and any portion of the dividends or other
         distributions with respect to the Arch Common Stock deposited by Arch
         with the Exchange Agent (including the proceeds of any investments
         thereof) that remain unclaimed by the holders of Certificates 180 days
         after the Effective Time shall be re-delivered to Arch. Any holders of
         Certificates who have not theretofore complied with this Article IV
         shall thereafter be entitled to look only to the Surviving Corporation
         for exchange of shares of Arch Common Stock, and any dividends and
         other distributions with respect thereto issuable and/or payable
         pursuant to Section 4.1, Section 4.2(b), and Section 4.2(d) upon due
         surrender of their Certificates (or affidavits of loss in lieu
         thereof), in each case, without any interest thereon. Notwithstanding
         the foregoing, none of Arch, the Exchange Agent, nor any other Person
         shall be liable to




                                        6


<PAGE>   15
         any former holder of Certificates for any amount properly delivered to
         a public official pursuant to applicable abandoned property, escheat or
         similar laws.

                  (f)      LOST, STOLEN OR DESTROYED CERTIFICATES. In the event
         any Certificate shall have been lost, stolen or destroyed, upon the
         making of an affidavit of that fact by the Person claiming such
         Certificate to be lost, stolen or destroyed, and the posting by such
         Person of a bond in the form customarily required by Arch as indemnity
         against any claim that may be made against it with respect to such
         Certificate, Arch will issue the shares of Arch Common Stock and the
         Exchange Agent will issue stock and any dividends and other
         distributions with respect thereto issuable or payable in exchange for
         such lost, stolen, or destroyed Certificate pursuant to Section 4.1,
         Section 4.2(b) and Section 4.2(d), in each case, without interest.

                  (g)      AFFILIATES. Notwithstanding anything in this
         Agreement to the contrary, Certificates surrendered for exchange by any
         Rule 145 Affiliate (as determined pursuant to Section 6.8) of PageNet
         shall not be exchanged until Arch has received a written agreement from
         such Person as provided in Section 6.8.

         4.3.     DISSENTERS' RIGHTS. In accordance with Section 262 of the
DGCL, no appraisal rights will be available to holders of PageNet Shares in
connection with the Merger.

         4.4.     ADJUSTMENTS TO PREVENT DILUTION. In the event that prior to
the Effective Time, solely as a result of a distribution, reclassification,
stock split (including a reverse split), stock dividend or stock distribution,
or other similar transaction, there is a change in the number of PageNet Shares,
Arch Series C Preferred Shares, Arch Common Stock, or securities convertible or
exchangeable into, or exercisable for, PageNet Shares, Arch Series C Preferred
Shares or Arch Common Stock issued and outstanding, the Exchange Ratio and the
Series C Exchange Ratio shall be equitably adjusted to eliminate the effects of
such event.

         4.5.     ALTERNATE TRANSACTION STRUCTURE. At any time prior to the
effectiveness of the S-4 Registration Statement (as defined herein), either Arch
or PageNet may notify the other party (the "ALTERNATIVE MERGER NOTICE") that it
desires to restructure the Merger or the other transactions contemplated hereby
in a manner contemplated to (i) increase the likelihood that the Merger would be
treated as a tax-free reorganization within the meaning of Section 368(a) of the
Code, (ii) decrease any potential tax liability of PageNet, Arch or the
Surviving Corporation after the Effective Time, (iii) provide greater
operational flexibility to Arch and the Surviving Corporation after the
Effective Time, or (iv) increase the number of PageNet Shares (or Distributed
Interests) offered to holders of PageNet Notes or the number of shares of Arch
Common Stock offered to holders of Arch Notes in the Exchange Offers (with a
corresponding reduction in the number of shares offered to the holders of
PageNet Shares (or Distributed Interests) or the holders of Arch Common Stock,
respectively). Upon delivery of the Alternative Merger Notice, the parties to
this Agreement shall




                                        7

<PAGE>   16
cooperate with each other and use their respective reasonable best efforts to
determine the manner in which the Merger, the Agreement and the transactions
contemplated hereby shall be restructured (the Merger, restructured as
contemplated by the parties pursuant to this Section 4.5, shall be referred to
herein as the "ALTERNATIVE MERGER"). With the written consent of each of the
parties to this Agreement (such consent not to be unreasonably withheld), the
Merger, this Agreement and the other transactions contemplated hereby may be
modified to reflect the Alternative Merger with a view to ensuring that the
parties hereto are not adversely affected by the restructuring.

                                   ARTICLE V.

                         REPRESENTATIONS AND WARRANTIES

         5.1.     REPRESENTATIONS AND WARRANTIES OF PAGENET, ARCH AND MERGER
SUB. Except as set forth in the corresponding sections or subsections of the
respective disclosure letters, dated as of the date of this Agreement, and
delivered by PageNet to Arch or by Arch to PageNet (each a "DISCLOSURE LETTER,"
and the "PAGENET DISCLOSURE LETTER" and the "ARCH DISCLOSURE LETTER,"
respectively), as the case may be, PageNet (except for subparagraphs (b)(ii),
(c)(ii), (j)(ii) and (o)(ii) below and references in subparagraphs (a) and (e)
below to documents made available by Arch to PageNet) represents and warrants to
Arch and Merger Sub, and Arch, on behalf of itself and Merger Sub (except for
subparagraphs (b)(i), (c)(i), (j)(i), and (o)(i) below, and references in
subparagraphs (a) and (e) below to documents made available by PageNet to Arch)
represents and warrants to PageNet, that:

                  (a)      ORGANIZATION, GOOD STANDING AND QUALIFICATION. Each
         of it and its Subsidiaries is a corporation duly organized, validly
         existing, and in good standing under the laws of its respective
         jurisdiction of organization and has all requisite corporate or similar
         power and authority to own and operate its properties and assets and to
         carry on its business as presently conducted, and is qualified to do
         business and is in good standing as a foreign corporation in each
         jurisdiction where the ownership or operation of its properties or
         conduct of its business requires such qualification, except when the
         failure to be so qualified or in good standing, when taken together
         with all other such failures, is not reasonably likely to have a
         Material Adverse Effect (as defined below) on it. It has made available
         to Arch, in the case of PageNet, and to PageNet, in the case of Arch, a
         complete and correct copy of its certificate of incorporation and
         bylaws, each as amended to date. Such certificates of incorporation and
         bylaws are in full force and effect.

         The term "SUBSIDIARY" means, with respect to PageNet or Arch, as the
case may be, any entity, whether incorporated or unincorporated, of which at
least a majority of the securities or other ownership interests having by their
terms ordinary voting power to elect at least a majority of the Board of
Directors or other persons performing similar functions is directly or
indirectly owned by such party.




                                        8


<PAGE>   17
         The term "MATERIAL ADVERSE EFFECT" means, with respect to any Person, a
material adverse effect on the business, assets (including licenses, franchises
and other intangible assets), financial condition and results of operations of
such Person and its Subsidiaries, taken as a whole; PROVIDED, HOWEVER, that
Material Adverse Effect shall exclude any effect resulting from, or related to,
changes or developments involving: (1) a prospective change arising out of any
proposed or adopted legislation, or any other proposal or enactment by any
governmental, regulatory, or administrative authority; (2) general conditions
applicable to the U.S. economy, including changes in interest rates; or (3)
conditions affecting the U.S. wireless telecommunications industry, in each case
taken as a whole.

         Reference to "the other party" means, with respect to PageNet, Arch and
means, with respect to Arch, PageNet.

                  (b)      CAPITAL STRUCTURE.

                           (i)      The authorized capital stock of PageNet
         consists of 250,000,000 PageNet Shares, of which 103,960,240 PageNet
         Shares were issued and outstanding and no PageNet Shares were held in
         treasury as of the close of business on November 5, 1999, and
         25,000,000 shares of preferred stock, of which no shares were issued
         and outstanding as of the close of business on November 5, 1999. All of
         the outstanding PageNet Shares have been duly authorized and are
         validly issued, fully paid and nonassessable. There are no PageNet
         Shares reserved for issuance pursuant to the Shareholder Rights
         Agreement, dated as of September 8, 1994, between PageNet and The First
         National Bank of Boston, as Rights Agent, as amended (the "PAGENET
         RIGHTS AGREEMENT"), and PageNet Shares subject to issuance as set forth
         below, as of the date of this Agreement, and PageNet has no PageNet
         Shares or preferred stock reserved for, or subject to, issuance. As of
         November 5, 1999, there were 9,887,588 PageNet Shares that PageNet was
         obligated to issue pursuant to PageNet's stock plans, at a weighted
         average exercise price of $9.2637 per PageNet Share, and each of such
         plans is listed in Section 5.1(b)(i) of the PageNet Disclosure Letter
         (collectively, the "PAGENET STOCK PLANS"). Each of the outstanding
         shares of capital stock or other securities of each of PageNet's
         "SIGNIFICANT SUBSIDIARIES" (as defined in Rule 1.02(w) of Regulation
         S-X promulgated pursuant to the Securities Exchange Act of 1934, as
         amended (the "EXCHANGE ACT"), including any Subsidiaries that, if
         aggregated, would together constitute a Significant Subsidiary) is duly
         authorized, validly issued, fully paid and nonassessable and owned by
         PageNet or a direct or indirect wholly owned subsidiary of PageNet,
         free and clear of any lien, pledge, security interest, claim or other
         encumbrance. Except as set forth above, as of the date of this
         Agreement there are no preemptive or other outstanding rights, options,
         warrants, conversion rights, stock appreciation rights, redemption
         rights, repurchase rights, agreements, arrangements or commitments to
         issue or to sell any shares of capital stock or other securities of
         PageNet or any of its Significant Subsidiaries or any securities or
         obligations convertible or



                                        9


<PAGE>   18
         exchangeable into, or exercisable for, or giving any Person a right to
         subscribe for or acquire, any securities of PageNet or any of its
         Significant Subsidiaries, and no securities or obligation evidencing
         such rights are authorized, issued or outstanding. As of the date
         hereof, PageNet does not have outstanding any bonds, debentures, notes
         or other debt obligations, the holders of which have the right to vote
         (or convertible into or exercisable for securities having the right to
         vote) with the stockholders of PageNet on any matter. No PageNet Shares
         are held by a Subsidiary of PageNet.

                           (ii)     The authorized capital stock of Arch
         consists of 65,000,000 shares of Arch Common Stock, of which 45,837,186
         shares of Arch Common Stock were issued and outstanding and no shares
         of Arch Common Stock were held in treasury as of the close of business
         on November 5, 1999, 10,000,000 shares of Class B common stock, par
         value $0.01 per share, of Arch (the "ARCH CLASS B COMMON STOCK") of
         which 5,360,261 shares of Arch Class B Common Stock were issued and
         outstanding as of the close of business on November 5, 1999, and
         10,000,000 shares of preferred stock, of which (x) 250,000 were
         designated Series C Convertible Preferred Stock, par value $0.01 per
         share (each a "ARCH SERIES C PREFERRED SHARE"), of which 250,000 shares
         were issued and outstanding as of the close of business on November 5,
         1999, and (y) 300,000 shares of which were designated Series B Junior
         Participating Preferred Stock, par value $0.01 per share (each a "ARCH
         SERIES B PREFERRED SHARE," collectively the "ARCH SERIES B PREFERRED
         SHARES"), none of which were outstanding as of the close of business on
         November 5, 1999 (the Arch Series B Preferred Shares together with the
         Arch Series C Preferred Shares, the "ARCH PREFERRED SHARES"). All of
         the outstanding shares of Arch Common Stock, Arch Class B Common Stock
         and Arch Preferred Shares have been duly authorized and are validly
         issued, fully paid and nonassessable. Other than 300,000 Arch Series B
         Preferred Shares reserved for issuance pursuant to the Rights
         Agreement, dated as of October 13, 1995, between Arch and The Bank of
         New York, as Rights Agent, as amended (the "ARCH RIGHTS AGREEMENT"),
         and Arch Common Stock subject to issuance as set forth below, and Arch
         Preferred Shares, Arch has not authorized, issued, or reserved for
         issuance any common stock, preferred stock, or other shares of capital
         stock as of the date of this Agreement. As of November 5, 1999, there
         were 1,834,253 shares of Arch Common Stock that Arch was obligated to
         issue pursuant to Arch' stock plans, at a weighted average exercise
         price of $10.18 per share of Arch Common Stock, each of such plans is
         listed in Section 5.1(b)(ii) of the Arch Disclosure Letter
         (collectively the "ARCH STOCK PLANS"), and 5,902,702 shares of Arch
         Common Stock that Arch was obligated to issue pursuant to outstanding
         warrants having an expiration date of September 1, 2001 and an
         effective exercise price of $9.03 per Share of Arch Common Stock. As of
         the date hereof, each outstanding Arch Series C Preferred Share is
         convertible into 6.7444 shares of Arch Common Stock. Each of the
         outstanding shares of capital stock or other securities of each of
         Arch' Significant Subsidiaries is duly authorized, validly issued,
         fully paid and nonassessable and owned by Arch or a direct or indirect
         wholly owned Subsidiary of Arch,




                                       10


<PAGE>   19
         free and clear of any lien, pledge, security interest, claim, or other
         encumbrance. Except as set forth above and except pursuant to the Arch
         Series B Preferred Shares or the Arch Series C Preferred Shares, there
         are no preemptive or other outstanding rights, options, warrants,
         conversion rights, stock appreciation rights, redemption rights,
         repurchase rights, agreements, arrangements or commitments to issue or
         sell any shares of capital stock or other securities of Arch or any of
         its Significant Subsidiaries or any securities or obligations
         convertible or exchangeable into, or exercisable for, or giving any
         Person a right to subscribe for or acquire, any securities of Arch or
         any of its Significant Subsidiaries, and no securities or obligations
         evidencing such rights are authorized, issued or outstanding. Arch does
         not have outstanding any bonds, debentures, notes or other debt
         obligations, the holders of which have the right to vote (or
         convertible into or exercisable for securities having the right to
         vote) with the stockholders of Arch on any matter. No shares of Arch
         Common Stock or Arch Preferred Shares are held by a Subsidiary of Arch.
         The authorized capital stock of Merger Sub consists of 1,000 shares of
         Common Stock, par value $0.01 per share, all of which are validly
         issued and outstanding. All of the issued and outstanding capital stock
         of Merger Sub is, and at the Effective Time will be, owned by Arch, and
         there are (i) no other shares of capital stock or other voting
         securities of Merger Sub, (ii) no securities of Merger Sub convertible
         into or exchangeable for shares of capital stock or other voting
         securities of Merger Sub and (iii) no options or other rights to
         acquire from Merger Sub, and no obligations of Merger Sub to issue, any
         capital stock, other voting securities or securities convertible into
         or exchangeable for capital stock or other voting securities of Merger
         Sub. Merger Sub has not conducted any business prior to the date of
         this Agreement and has no, and prior to the Effective Time will have
         no, assets, liabilities or obligations of any nature other than those
         incident to its formation and pursuant to this Agreement and the Merger
         and the other transactions contemplated by this Agreement.

                  (c)      CORPORATE AUTHORITY; APPROVAL AND FAIRNESS.

                           (i)      PageNet has all requisite corporate power
         and authority and has taken all corporate action necessary in order to
         execute, deliver and perform its obligations under this Agreement and,
         subject only to adoption of this Agreement and approval of the Merger
         and the amendment to the PageNet certificate of incorporation to
         increase the number of PageNet Shares authorized to the amount
         sufficient to complete the transactions contemplated by this Agreement
         by the holders of a majority of the PageNet Shares in accordance with
         applicable law and PageNet's bylaws and charter and to the receipt of
         PageNet Required Consents (as defined in Section 5.1(d)(i)), to
         consummate the Merger. This Agreement has been duly executed and
         delivered by PageNet and is a valid and binding agreement of PageNet,
         enforceable against PageNet in accordance with its terms, subject to
         bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium
         and similar laws of general applicability relating to or affecting
         creditors' rights and to general



                                       11

<PAGE>   20


         equity principles (the "BANKRUPTCY AND EQUITY EXCEPTION"). The Board of
         Directors of PageNet: (A) has unanimously approved and declared
         advisable this Agreement and the other transactions contemplated by
         this Agreement; and (B) has received the opinion of each of its
         financial advisors, Houlihan Lokey Howard & Zukin Capital, Goldman,
         Sachs & Co. and Morgan Stanley Dean Witter, in a customary form and to
         the effect that the Merger Consideration and the Distributed Interests,
         taken as a whole, to be received by the holders of PageNet Shares, on
         the date of such opinion, is fair to such holders from a financial
         point of view. The PageNet Shares when issued pursuant to the PageNet
         Exchange Offer (as defined in Section 6.18(a)), will be validly issued,
         fully paid and nonassessable, and no stockholder of PageNet will have
         any preemptive right of subscription or purchase with respect thereto.

                           (ii)     Arch and Merger Sub each has all requisite
         corporate power and authority and has taken all corporate action
         necessary in order to execute, deliver and perform its obligations
         under this Agreement and the Series C Consent Agreement and, subject
         only to adoption of the Certificate Amendments (or this Agreement and
         the Alternative Merger if Arch is a party to the Alternative Merger)
         and the other transactions contemplated by this Agreement pursuant to
         this Agreement by a majority of the votes of the Arch Common Stock and
         Arch Series C Preferred Shares voting together and a majority of the
         votes of the Arch Series C Preferred Shares (for certain of the
         Certificate Amendments) in accordance with applicable law and Arch
         certificate of incorporation and bylaws (the "ARCH REQUISITE VOTE"),
         and to the receipt of the Arch Required Consents (as defined in Section
         5.1(d)(i)), to consummate the Merger. This Agreement has been duly
         executed and delivered by Arch and Merger Sub and is a valid and
         binding agreement of Arch and Merger Sub, enforceable against Arch and
         Merger Sub in accordance with its terms, subject to the Bankruptcy and
         Equity Exception. The Board of Directors of Arch: (A) has unanimously
         approved and declared advisable this Agreement and the Series C Consent
         Agreement and the other transactions contemplated by this Agreement and
         the Series C Consent Agreement; and (B) has received the opinion of its
         financial advisor, Bear, Stearns & Co. Inc., in a customary form and to
         the effect that the Exchange Ratio, as of the date of such opinion, is
         fair to the public stockholders of Arch from a financial point of view.
         The shares of Arch Common Stock, when issued pursuant to this Agreement
         or the Arch Exchange Offer, will be validly issued, fully paid and
         nonassessable, and no stockholder of Arch will have any preemptive
         right of subscription or purchase with respect thereto.

                  (d)      GOVERNMENT FILINGS; NO VIOLATIONS.

                           (i)      Other than the filings, notices and/or
         approvals: (A) pursuant to Section 1.3 of this Agreement, or, in
         connection with the Bankruptcy Case and the Prepackaged Plan, the Final
         Confirmation Order; (B) under the Hart-Scott-Rodino





                                       12


<PAGE>   21
         Antitrust Improvements Act of 1976, as amended (the "HSR ACT"), the
         Exchange Act, and the Securities Act of 1933, as amended (the
         "SECURITIES ACT"); (C) of the Federal Communications Commission (the
         "FCC") pursuant to the Communications Act of 1934, as amended (the
         "COMMUNICATIONS ACT"), or the rules, regulations, and policies of the
         FCC (the "FCC REGULATIONS"); (D) of any state public utility
         commissions or similar state regulatory bodies (each, a "PUC")
         identified in its respective Disclosure Letter pursuant to applicable
         state Laws (as defined in Section 5.1(i)) regulating the paging or
         other telecommunications business ("STATE LAWS"); (E) to comply with
         state securities or "blue- sky" laws; and (F) of any local, state or
         federal governmental authorities required for a change in ownership of
         transmission sites (all of such filings and/or notices of Arch being
         referred to as the "ARCH REQUIRED CONSENTS" and of PageNet being
         referred to as the "PAGENET REQUIRED CONSENTS"), no notices, reports or
         other filings are required to be made by it with, nor are any consents,
         registrations, approvals, permits or authorizations required to be
         obtained by it from, any governmental or regulatory authority, court,
         agency, commission, body or other governmental entity ("GOVERNMENTAL
         ENTITY"), in connection with the execution and delivery of this
         Agreement by it and the consummation by it of the Merger and the other
         transactions contemplated by this Agreement, except those that the
         failure to make or obtain are not, individually or in the aggregate,
         reasonably likely to have a Material Adverse Effect on it or prevent,
         materially delay or materially impair its ability to (x) consummate the
         transactions contemplated by this Agreement or (y) operate its business
         following the Effective Time.

                  The term "GOVERNMENTAL REGULATIONS" includes the HSR Act, the
Communications Act, the FCC Regulations, State Laws, and any other antitrust,
competition, or telecommunications Law of the United States of America or any
other nation, province, territory or jurisdiction that must be satisfied or
complied with in order to consummate and make effective the Merger and the other
transactions contemplated by this Agreement.

                           (ii)     The execution, delivery and performance of
         this Agreement by it do not, and the consummation by it of the Merger
         and the other transactions contemplated by this Agreement will not,
         constitute or result in: (A) a breach or violation of, or a default
         under, its certificate of incorporation or bylaws or the comparable
         governing instruments of any of its Significant Subsidiaries or any
         entity in which it has an equity interest of 20% or more (collectively,
         with Significant Subsidiaries, "SIGNIFICANT INVESTEES"); (B) a breach
         or violation of, or a default under, the acceleration of any
         obligations or the creation of a lien, pledge, security interest or
         other encumbrance on its assets or the assets of any of its Significant
         Investees (with or without notice, lapse of time or both) pursuant to,
         any agreement, lease, contract, note, mortgage, indenture, arrangement
         or other obligation ("CONTRACTS") binding upon it or any of its
         Significant Investees or any Law or governmental or non-governmental
         permit or license to which it or any of its Significant Investees is
         subject or is a party; or (C) any change in the rights or obligations
         of any party under any





                                       13


<PAGE>   22
         Contracts to which it or any of its Significant Investees is subject or
         is a party, except for such defaults, breaches, violations or
         accelerations as may result from the Bankruptcy Case or the Prepackaged
         Plan, and except, in the case of clauses (B) or (C) above for any
         breach, violation, default, acceleration, creation or change that,
         individually or in the aggregate, is not reasonably likely to have a
         Material Adverse Effect on it or prevent, materially delay or
         materially impair its ability to (x) consummate the transactions
         contemplated by this Agreement or (y) operate its business following
         the Effective Time. The PageNet Disclosure Letter, with respect to
         PageNet, and the Arch Disclosure Letter, with respect to Arch, sets
         forth a correct and complete list of Contracts to which it or any of
         its Significant Investees is a party, pursuant to which consents or
         waivers are or may be required prior to consummation of the
         transactions contemplated by this Agreement, other than as may be
         required in connection with the Bankruptcy Case or the Prepackaged
         Plan, or those where the failure to obtain such consents or waivers is
         not, individually or in the aggregate, reasonably likely to have a
         Material Adverse Effect on it or prevent or materially impair its (x)
         ability to consummate the transactions contemplated by this Agreement
         or (y) operate its business following the Effective Time.

                  (e)      REPORTS; FINANCIAL STATEMENTS. It has made available
         to the other party each registration statement, report, proxy statement
         or information statement prepared by it since December 31, 1996,
         including without limitation its Annual Report on Form 10-K for the
         years ended December 31, 1996, December 31, 1997 and December 31, 1998
         in the form (including exhibits, annexes and any amendments thereto)
         filed with the Securities and Exchange Commission (the "SEC")
         (collectively, including any such reports filed subsequent to the date
         of this Agreement, its "REPORTS"). As of their respective dates, its
         Reports complied, as to form, with all applicable requirements under
         the Securities Act, the Exchange Act, and the rules and regulations
         thereunder, and (together with any amendments thereto filed prior to
         the date hereof) did not contain any untrue statement of a material
         fact or omit to state a material fact required to be stated therein or
         necessary to make the statements made therein, in light of the
         circumstances in which they were made, not misleading. Each of the
         consolidated balance sheets included in, or incorporated by reference
         into, its Reports (including the related notes and schedules) fairly
         presents the consolidated financial position of it and its Subsidiaries
         as of its date and each of the consolidated statements of income,
         stockholders' equity, and of cash flows included in, or incorporated by
         reference into, its Reports (including any related notes and schedules)
         fairly presents the consolidated results of operations, retained
         earnings and cash flows, as the case may be, of it and its Subsidiaries
         for the periods set forth therein (subject, in the case of unaudited
         statements, to notes and normal year-end audit adjustments that will
         not be material in amount or effect), in each case in accordance with
         generally accepted accounting principles ("GAAP") consistently applied
         during the periods involved, except as may be noted therein. It has
         made available to the other party all correspondence since December 31,
         1996 between it or its representatives, on the one hand, and the SEC,
         on




                                       14


<PAGE>   23
         the other hand. To its knowledge, as of the date of this Agreement,
         there are no pending or threatened SEC inquiries or investigations
         relating to it or any of its Reports. To its knowledge and except as
         disclosed in its Reports or in filings by its holders with the SEC, as
         of the date of this Agreement, no Person or "group" "beneficially owns"
         5% or more of its outstanding voting securities, with the terms
         "beneficially owns" and "group" having the meanings ascribed to them
         under Rule 13d-3 and Rule 13d-5 under the Exchange Act.

                  (f)      ABSENCE OF CERTAIN CHANGES. Except as disclosed in
         its Reports filed prior to the date of this Agreement or as expressly
         contemplated by this Agreement, since December 31, 1998 (the "AUDIT
         DATE"), it and its Subsidiaries have conducted their respective
         businesses only in, and have not engaged in any material transaction
         other than according to, the ordinary and usual course of such
         businesses and there has not been: (i) any change in the business,
         assets (including licenses, franchises and other intangible assets),
         financial condition and results of operations of it and its
         Subsidiaries, except those changes that are not, individually or in the
         aggregate, reasonably likely to have a Material Adverse Effect on it;
         (ii) any damage, destruction or other casualty loss with respect to any
         asset or property owned, leased or otherwise used by it or any of its
         Subsidiaries, whether or not covered by insurance, which damage,
         destruction or loss is reasonably likely, individually or in the
         aggregate, to have a Material Adverse Effect on it; (iii) any
         declaration, setting aside or payment of any dividend or other
         distribution with respect to its capital stock; or (iv) any change by
         it in accounting principles, practices or methods, except as required
         by GAAP. Since the Audit Date, except as provided for in this
         Agreement, in its respective Disclosure Letter, or as disclosed in its
         Reports filed prior to the date of this Agreement, there has not been
         any increase in the salary, wage, bonus, grants, awards, benefits or
         other compensation payable or that could become payable by it or any of
         its respective Subsidiaries, to directors, officers or key employees as
         identified in the corresponding section of each party's Disclosure
         Letter or any amendment of any of its Compensation and Benefit Plans
         (as defined in Section 5.1(h)(i)), other than increases or amendments
         in the ordinary and usual course of its business (which may include
         normal periodic performance reviews and related compensation and
         benefit increases and the provision of new individual compensation and
         benefits for promoted or newly hired officers and employees on terms
         consistent with past practice).

                  (g)      LITIGATION AND LIABILITIES. Except as disclosed in
         its Reports filed prior to the date of this Agreement, there are no:
         (x) (i) civil, criminal or administrative actions, suits, claims,
         hearings, investigations or proceedings pending or, to the actual
         knowledge of its executive officers identified in the corresponding
         section of each party's Disclosure Letter ("KNOWLEDGEABLE EXECUTIVES"),
         threatened against it or any of its Affiliates (as defined in Rule
         12b-2 under the Exchange Act); or (ii) obligations or liabilities,
         whether or not accrued, contingent or otherwise, and whether or not
         required to be disclosed, including those relating to matters involving
         any Environmental Law, or (y) any other facts or




                                       15


<PAGE>   24
         circumstances, in any such case, of which the Knowledgeable Executives
         have actual knowledge and that are reasonably likely to result in any
         claims against or obligations or liabilities of it or any of its
         Affiliates, except, in the case of (x) or (y), those that are not,
         individually or in the aggregate, reasonably likely to have a Material
         Adverse Effect on it or prevent, materially delay or materially impair
         its ability to consummate the transactions contemplated by this
         Agreement.

                  (h)      EMPLOYEE BENEFITS.

                           (i)      Neither it nor any of its respective ERISA
         Affiliates (as defined below) maintains, is a party to, participates
         in, or has any liability or contingent liability with respect to, any
         employee benefit plan (within the meaning of Section 3(3) of the
         Employee Retirement Income Security Act of 1974, as amended ("ERISA"),
         or any bonus, deferred compensation, pension, retirement,
         profit-sharing, thrift, savings, employee stock ownership, stock bonus,
         change-of-control, stock purchase, restricted stock, stock option,
         employment, consulting, termination, severance, compensation, medical,
         health or fringe benefit plan, or other plan, program, agreement,
         policy or arrangement for any of its agents, consultants, employees,
         directors, former employees or former directors and/or any of its
         respective ERISA Affiliates which does not constitute an employee
         benefit plan under ERISA (which employee benefit plans and other plans,
         programs, agreements, policies and arrangements are collectively
         referred to as the "COMPENSATION AND BENEFIT PLANS"). A true and
         correct copy of each Compensation and Benefit Plan which have been
         reduced to writing and, to the extent applicable, copies of the most
         recent annual report, actuarial report, accountant's opinion of the
         plan's financial statements, summary plan description and Internal
         Revenue Service determination letter with respect to any Compensation
         and Benefit Plans and any trust agreements or insurance contracts
         forming a part of such Compensation and Benefit Plans has been made
         available by PageNet and Arch to the other party prior to the date of
         this Agreement. In the case of any Compensation and Benefit Plan which
         is not in written form, PageNet and Arch has supplied to the other
         party an accurate description of such Compensation and Benefit Plan as
         in effect on the date of this Agreement. For purposes of this
         Agreement, the term "ERISA AFFILIATE" means any corporation or trade or
         business which, together with PageNet or Arch, as applicable, is a
         member of a controlled group of Persons or a group of trades or
         businesses under common control with PageNet or Arch, as applicable,
         within the meaning of Sections 414(b), (c), (m) or (o) of the Code.

                           (ii)     All Compensation and Benefit Plans, other
         than a multiemployer plan (as defined in Section 3(37) of ERISA), are
         in substantial compliance with all requirements of applicable law,
         including the Code and ERISA and no event has occurred which will or
         could cause any such Compensation and Benefit Plan to fail to comply
         with such requirements and no notice has been issued by any
         governmental authority questioning




                                       16


<PAGE>   25
         or challenging such compliance. There have been no acts or omissions by
         it or any of its respective ERISA Affiliates, which have given rise to
         or may give rise to material fines, penalties, taxes or related charges
         under Section 502 of ERISA or Chapters 43, 47, 68 or 100 of the Code
         for which PageNet, Arch, as applicable, or any of its respective ERISA
         Affiliates may be liable. Each of the Compensation and Benefit Plans
         that is an "employee pension benefit plan" within the meaning of
         Section 3(2) of ERISA, other than a multiemployer plan (each a "PENSION
         PLAN"), and that is intended to be qualified under Section 401(a) of
         the Code has received a favorable determination letter from the
         Internal Revenue Service (the "IRS") which covers all changes in law
         for which the remedial amendment period (within the meaning of Section
         401(b) of the Code and applicable regulations) has expired and neither
         it, nor any of its respective ERISA Affiliates is aware of any
         circumstances reasonably likely to result in revocation of any such
         favorable determination letter. There is no pending or, to the actual
         knowledge of PageNet's or Arch', as applicable, Knowledgeable
         Executives, threatened material litigation relating to its Compensation
         and Benefit Plans. Neither it, nor any of its respective ERISA
         Affiliates, has engaged in a transaction with respect to any of the
         Compensation and Benefit Plans that, assuming the taxable period of
         such transaction expired as of the date of this Agreement, would
         subject it or any of the ERISA Affiliates to a material tax or penalty
         imposed by either Section 4975 of the Code or Section 502 of ERISA.

                           (iii)    As of the date of this Agreement, no
         liability under Title IV of ERISA (other than the payment of
         prospective premium amounts to the Pension Benefit Guaranty Corporation
         in the normal course) has been or is expected to be incurred by it or
         any of its respective ERISA Affiliates with respect to any Compensation
         and Benefit Plan. No notice of a "reportable event," within the meaning
         of Section 4043 of ERISA for which the 30-day reporting requirement has
         not been waived, has been required to be filed for any Pension Plans
         within the 12-month period ending on the date of this Agreement or will
         be required to be filed in connection with the transactions
         contemplated by this Agreement.

                           (iv)     All contributions required to be made under
         the terms of any of the Compensation and Benefit Plans as of the date
         of this Agreement have been timely made or have been reflected on the
         most recent consolidated balance sheet filed or incorporated by
         reference in its Reports prior to the date of this Agreement. None of
         the Pension Plans has an "accumulated funding deficiency" (whether or
         not waived) within the meaning of Section 412 of the Code or Section
         302 of ERISA. Neither it, nor any of its respective ERISA Affiliates
         has provided, or is required to provide, security to any Pension Plans
         pursuant to Section 401(a)(29) of the Code or to the PBGC pursuant to
         Title IV or ERISA.

                           (v)      Under each of the Pension Plans as of the
         last day of the most recent plan year ended prior to the date of this
         Agreement, the actuarially determined




                                       17


<PAGE>   26
         present value of all "benefit liabilities," within the meaning of
         Section 4001(a)(16) of ERISA (as determined on the basis of the
         actuarial assumptions contained in such Pension Plan's most recent
         actuarial valuation), did not exceed the then current value of the
         assets of such Pension Plan, and there has been no material change in
         the financial condition of such Pension Plan since the last day of the
         most recent plan year.

                           (vi)     Neither it, nor any of its respective ERISA
         Affiliates, have any obligations for post-termination health and life
         benefits under any of the Compensation and Benefit Plans, except as set
         forth in its Reports filed prior to the date of this Agreement or as
         required by applicable law.

                           (vii)    The consummation of the Merger (or the
         approval thereof by its respective stockholders) and the other
         transactions contemplated by this Agreement, will not (except as may
         result from, or be contemplated by, the Bankruptcy Case or the
         Prepackaged Plan): (x) entitle any of its employees or directors or any
         employees of any of its ERISA Affiliates, as applicable, to severance
         pay, directly or indirectly, upon termination of employment or
         otherwise; (y) accelerate the time of payment or vesting or trigger any
         payment of compensation or benefits under, or increase the amount
         payable or trigger any other material obligation pursuant to, any of
         the Compensation and Benefit Plans; or (z) result in any breach or
         violation of, or a default under, any of the Compensation and Benefit
         Plans.

                           (viii)   None of the Compensation and Benefit Plans
         is a multiemployer plan and neither it, nor any of its respective ERISA
         Affiliates, have contributed or been obligated to contribute to a
         multiemployer plan at any time.

                  (i)      COMPLIANCE WITH LAWS. Except as set forth in its
         Reports filed prior to the date of this Agreement, the businesses of
         each of it and its Subsidiaries have not been, and are not being,
         conducted in violation of any law, statute, ordinance, regulation,
         judgment, order, decree, injunction, arbitration award, license,
         authorization, opinion, agency requirement or permit of any
         Governmental Entity or common law (collectively, "LAWS"), except for
         violations or possible violations that are not, individually or in the
         aggregate, reasonably likely to have a Material Adverse Effect on it or
         prevent, materially delay or materially impair its ability to
         consummate the transactions contemplated by this Agreement. Except as
         set forth in its Reports filed prior to the date of this Agreement, no
         investigation or review by any Governmental Entity with respect to it
         or any of its Subsidiaries is pending or, to the actual knowledge of
         the Knowledgeable Executives, threatened, nor has any Governmental
         Entity indicated an intention to conduct the same, except for those the
         outcome of which are not, individually or in the aggregate, reasonably
         likely to have a Material Adverse Effect on it or prevent, materially
         delay or materially impair its ability to consummate the transactions
         contemplated by this Agreement. To the actual knowledge of





                                       18


<PAGE>   27
         the Knowledgeable Executives, no material change is required in its or
         any of its Subsidiaries' processes, properties or procedures in
         connection with any such Laws, and it has not received any notice or
         communication of any material noncompliance with any such Laws that has
         not been cured as of the date of this Agreement, except for such
         changes and noncompliance that are not, individually or in the
         aggregate, reasonably likely to have a Material Adverse Effect on it or
         prevent, materially delay or materially impair its ability to
         consummate the transactions contemplated by this Agreement. Each of it
         and its Subsidiaries has all permits, licenses, franchises, variances,
         exemptions, orders, operating rights, and other governmental
         authorizations, consents and approvals (collectively, "PERMITS"),
         necessary to conduct their business as presently conducted, except for
         those the absence of which are not, individually or in the aggregate,
         reasonably likely to have a Material Adverse Effect on it or prevent,
         materially delay or materially impair its ability to consummate the
         transactions contemplated by this Agreement.

                  (j)      TAKEOVER STATUTES; CHARTER AND BYLAW PROVISIONS.

                           (i)      The PageNet Board of Directors has taken all
         appropriate and necessary actions to exempt the Merger, this Agreement
         and the other transactions contemplated hereby from the restrictions of
         Section 203 of the DGCL. No other "control share acquisition," "fair
         price," "moratorium" or other anti-takeover laws or regulations enacted
         under U.S. stated or federal laws (each a "TAKEOVER STATUTE") apply to
         the Merger, this Agreement, or any of the other transactions
         contemplated hereby. PageNet and the PageNet Board of Directors have
         taken all appropriate and necessary actions to (A) render the PageNet
         Rights Agreement inapplicable to the Merger and the other transactions
         contemplated by this Agreement, (B) provide that (I) neither Arch nor
         Merger Sub shall be deemed an Acquiring Person (as defined in the
         PageNet Rights Agreement) as a result of this Agreement or the
         transactions contemplated hereby and thereby, (II) no Distribution Date
         (as defined in the PageNet Rights Agreement) shall be deemed to have
         occurred as a result of this Agreement or the transactions contemplated
         hereby and (III) the rights issuable pursuant to the PageNet Rights
         Agreement will not separate from the shares of PageNet Common Stock, as
         a result of the approval, execution or delivery of this Agreement or
         the consummation of the transactions contemplated hereby, and (C)
         render any anti-takeover or other provision contained in the
         certificate of incorporation or by-laws of PageNet inapplicable to the
         Merger, this Agreement and the other transactions contemplated hereby.

                           (ii)     The Arch Board of Directors has taken all
         appropriate and necessary actions to exempt the Merger, this Agreement
         and the transactions contemplated hereby from the restrictions of
         Section 203 of the DGCL. No other Takeover Statute applies to this
         Agreement or any of the transactions contemplated hereby. Arch and the
         Arch Board of Directors have taken all appropriate and necessary
         actions to (A) amend the




                                       19


<PAGE>   28
         Arch Rights Agreement as set forth in Exhibit B to this Agreement, (B)
         provide that (I) PageNet shall not be deemed an Acquiring Person (as
         defined in the Arch Rights Agreement) as a result of this Agreement or
         the transactions contemplated thereby, (II) no Distribution Date (as
         defined in the Arch Rights Agreement) shall be deemed to have occurred
         as a result of this Agreement or the transactions contemplated thereby
         unless the ownership threshold set forth in Exhibit B shall be
         exceeded, and (III) the rights issuable pursuant to the Arch Rights
         Agreement will not separate from the shares of Arch Common Stock, as a
         result of the approval, execution or delivery of this Agreement or the
         consummation of the transactions contemplated hereby unless the
         ownership threshold set forth in Exhibit B shall be exceeded, and (C)
         render any anti-takeover or other provision contained in the
         certificate of incorporation or by-laws of Arch inapplicable to the
         Merger, this Agreement and the other transactions contemplated hereby.

                  (k)      TAX MATTERS. As of the date of this Agreement,
         neither it nor any of its Subsidiaries has taken or agreed to take any
         action, nor do the Knowledgeable Executives have any actual knowledge
         of any fact or circumstance (excluding possible uncertainties regarding
         valuation of securities to be issued in the Merger and Exchange
         Offers), that would prevent the Merger and the other transactions
         contemplated by this Agreement from qualifying as a "reorganization"
         within the meaning of Section 368(a) of the Code.

                  (l)      TAXES. It and each of its Subsidiaries have prepared
         in good faith and duly and timely filed (taking into account any
         extension of time within which to file) all material Tax Returns
         required to be filed by any of them at or before the Effective Time and
         all such filed Tax Returns are complete and accurate in all material
         respects. It and each of its Subsidiaries as of the Effective Time: (x)
         will have paid all Taxes and estimated Taxes (including all amounts
         shown to be due on all filed Tax Returns) that they are required to pay
         prior to the Effective Time; and (y) will have withheld or collected
         all federal, state and local income taxes, FICA, FUTA and other Taxes,
         including, without limitation, similar foreign Taxes, required to be
         withheld from amounts owing to any employee, creditor, or third party,
         and to the extent required, will have paid such amounts to the proper
         governmental authority. As of the date of this Agreement, (i) there are
         not pending or threatened in writing, any audits, examinations,
         investigations or other proceedings with respect to Taxes or Tax
         matters, and (ii) there are not, to the actual knowledge of its
         Knowledgeable Executives, any unresolved questions, claims or
         outstanding proposed or assessed deficiencies concerning its or any of
         its Subsidiaries' Tax liability which, if determined adversely would
         have a Material Adverse Effect on it. Neither it nor any of its
         Subsidiaries has any liability with respect to income, franchise or
         similar Taxes in excess of the amounts accrued with respect to such
         Taxes that are reflected in the financial statements included in its
         Reports. Neither it nor any of its Subsidiaries has executed any waiver
         of any statute of limitations on, or extended the period for the
         assessment or collection of, any Tax. There are no tax liens (other
         than liens for current Taxes not yet due and payable)




                                       20


<PAGE>   29
         upon its assets or the assets of any Subsidiary. There is no "Section
         382 limitation," as defined in Section 382(b) of the Code, currently
         applicable to its or its Subsidiaries' net operating loss, investment
         credit, or other tax attribute carryforwards. Neither it nor any of its
         Subsidiaries: (A) is a party to any tax sharing agreement; or (B) is
         liable for the Tax obligations of any person other than it or one of
         its Subsidiaries.

         The term "TAX" (including, with correlative meaning, the terms "TAXES,"
and "TAXABLE") includes all federal, state, local and foreign income, profits,
franchise, gross receipts, environmental, customs duty, capital stock,
severance, stamp, payroll, sales, employment, unemployment, disability, use,
property, withholding, excise, production, value added, occupancy and other
taxes, duties, charges, fees, or assessments of any nature whatsoever, together
with all interest, penalties and additions imposed with respect to such amounts
and any interest with respect to such penalties and additions. The term "TAX
RETURN" includes all federal, state, local and foreign returns and reports
(including elections, declarations, disclosures, schedules, estimates and
information returns) required to be supplied to a Tax authority relating to
Taxes.

                  (m)      LABOR MATTERS. Neither it nor any of its Subsidiaries
         is the subject of any material proceeding asserting that it or any of
         its Subsidiaries has committed an unfair labor practice or is seeking
         to compel it to bargain with any labor union or labor organization, nor
         is there pending or, to the actual knowledge of its Knowledgeable
         Executives, threatened, nor has there been for the past five years, any
         labor strike, dispute, walkout, work stoppage, slow-down or lockout
         involving it or any of its Subsidiaries, except in each case as is not,
         individually or in the aggregate, reasonably likely to have a Material
         Adverse Effect on it. None of the employees of PageNet or Arch or any
         of their respective Subsidiaries is subject to a collective bargaining
         agreement, no collective bargaining agreement is currently being
         negotiated, and no attempt is currently being made or during the past
         three (3) years has been made to organize any of its employees to form
         or enter into any labor union or similar organization.

                  (n)      ENVIRONMENTAL MATTERS. Except as disclosed in its
         Reports filed prior to the date of this Agreement and except for such
         matters that, individually or in the aggregate, are not reasonably
         likely to have a Material Adverse Effect on it: (i) each of it and its
         Subsidiaries has complied with all applicable Environmental Laws; (ii)
         the properties currently owned or operated by it or any of its
         Subsidiaries (including soils, groundwater, surface water, buildings,
         or other structures) do not contain any Hazardous Substances; (iii) the
         properties formerly owned or operated by it or any of its Subsidiaries
         did not contain any Hazardous Substances during the period of ownership
         or operation by it or any of its Subsidiaries; (iv) neither it nor any
         of its Subsidiaries is subject to liability for any Hazardous Substance
         disposal or contamination on any third party property; (v) neither it
         nor any Subsidiary has been associated with any release or threat of
         release of any Hazardous Substance; (vi) neither it nor any Subsidiary
         has received any notice, demand, letter, claim,





                                       21


<PAGE>   30
         or request for information alleging that it or any of its Subsidiaries
         may be in violation of or liable under any Environmental Law; (vii)
         neither it nor any of its Subsidiaries is subject to any orders,
         decrees, injunctions, or other arrangements with any Governmental
         Entity or is subject to any indemnity or other agreement with any third
         party relating to liability under any Environmental Law or relating to
         Hazardous Substances; and (viii) there are no circumstances or
         conditions involving it or any of its Subsidiaries that could
         reasonably be expected to result in any claims, liability,
         investigations, costs, or restrictions on the ownership, use, or
         transfer of any of its properties pursuant to any Environmental Law.

         The term "ENVIRONMENTAL LAW" means any Law relating to: (A) the
protection, investigation or restoration of the environment, health, safety, or
natural resources; (B) the handling, use, presence, disposal, release, or
threatened release of any Hazardous Substance; or (C) noise, odor, wetlands,
pollution, contamination, or any injury or threat of injury to persons or
property or notifications to government agencies or the public in connection
with any Hazardous Substance.

         The term "HAZARDOUS SUBSTANCE" means any substance that is listed,
classified, or regulated pursuant to any Environmental Law, including any
petroleum product or by-product, asbestos- containing material, lead-containing
paint or plumbing, polychlorinated biphenyls, electromagnetic fields, microwave
transmission, radioactive materials, or radon.

                  (o)      BROKERS AND FINDERS. Neither it nor any of its
         officers, directors or employees has employed any broker or finder or
         incurred any liability for any brokerage fees, commissions or finders'
         fees in connection with the Merger or the other transactions
         contemplated in this Agreement or, the Series C Consent Agreement, as
         applicable, except that: (i) PageNet has employed Houlihan Lokey Howard
         & Zukin Capital, Goldman, Sachs & Co. and Morgan Stanley Dean Witter as
         its financial advisors, the arrangements with which have been disclosed
         to Arch prior to the date of this Agreement; and (ii) Arch has employed
         Bear, Stearns & Co. Inc. as its financial advisor, the arrangements
         with which have been disclosed to PageNet prior to the date of this
         Agreement.

                  (p)      COMPUTER SYSTEMS. Except as set forth in its Reports:
         (i) its computer system performs and shall perform properly all
         date-sensitive functions with respect to dates prior to and after
         December 31, 1999; and (ii) it has developed feasible contingency plans
         to ensure uninterrupted and unimpaired business operation in the event
         of a failure of its own or a third party's computer system or equipment
         on or about January 1, 2000 (including, those of vendors, customers,
         and suppliers, and a general failure of, or interruption in, its
         communications and delivery infrastructure).

                  (q)      FCC LICENSES. Each of Arch and PageNet, and each of
         its respective Subsidiaries, is the authorized and legal holder of, or
         otherwise has all rights to, all Permits issued under or pursuant to
         the Communications Act, the FCC Regulations, and State




                                       22


<PAGE>   31
         Laws which are necessary for the operation of their respective
         businesses as presently operated, except as would not, individually or
         in aggregate, have a Materially Adverse Effect on it. All such Permits
         and licenses are validly issued and in full force and effect, except as
         would not, individually or in the aggregate, have a Material Adverse
         Effect on it. Each of Arch and PageNet, and each of its respective
         Subsidiaries, is in compliance in all respects with the terms and
         conditions of each such Permit and with all applicable Governmental
         Regulations, except where the failure to be in compliance would not
         have a Material Adverse Effect on it. There is not pending, and to the
         actual knowledge of the Knowledgeable Executives of Arch and PageNet,
         as applicable, any threatened, action by or before the FCC or any
         governmental or regulatory authority to revoke, suspend, cancel,
         rescind, or modify in any material respect any of such party's Permits
         rights under the Communications Act, the FCC Regulations or State Laws.
         Each party has made all regulatory filings required, and paid all fees
         and assessments imposed, by any Governmental Entity, and all such
         filings and the calculation of such fees, are accurate in all material
         respects, except where the failure to make such filing or pay such fees
         or assessments would not have a Material Adverse Effect on such party.


                                   ARTICLE VI.

                                    COVENANTS

         6.1.     INTERIM OPERATIONS.

                  (a)      PageNet covenants and agrees as to itself and its
         Subsidiaries that, from and after the date of this Agreement and prior
         to the Effective Time (unless Arch shall otherwise approve in writing,
         and except as otherwise expressly contemplated by this Agreement,
         disclosed in the PageNet Disclosure Letter, or required by applicable
         Law):

                           (i)      Its business and the business of its
         Subsidiaries shall be conducted only in the ordinary and usual course
         and, to the extent consistent therewith, it and its Subsidiaries shall
         use their reasonable best efforts to preserve their respective business
         organizations intact and maintain their respective existing relations
         and goodwill with customers, suppliers, regulators, distributors,
         creditors, lessors, employees and business associates;

                           (ii)     It shall not: (A) amend its certificate of
         incorporation or bylaws; (B) split, combine, subdivide or reclassify
         its outstanding shares of capital stock; (C) declare, set aside or pay
         any dividend payable in cash, stock or property with respect to any
         capital stock; or (D) repurchase, redeem or otherwise acquire, except
         in connection with existing commitments under PageNet Stock Plans but
         subject to PageNet's obligations




                                       23


<PAGE>   32
         under subparagraph (iii) below, or permit any of its Subsidiaries to
         purchase or otherwise acquire, any shares of its capital stock or any
         securities convertible into, or exchangeable or exercisable for, any
         shares of its capital stock;

                           (iii)    Neither it nor any of its Subsidiaries shall
         take any action that would prevent the Merger from qualifying as a
         "reorganization" within the meaning of Section 368(a) of the Code or
         that would cause any of its representations and warranties in this
         Agreement to become untrue in any material respect;

                           (iv)     Neither it nor any of its ERISA Affiliates
         shall: (A) accelerate, amend or change the period of exercisability of
         or terminate, establish, adopt, enter into, make any new grants or
         awards of stock-based compensation or other benefits under any
         Compensation and Benefit Plans; (B) amend or otherwise modify any
         Compensation and Benefit Plan; or (C) increase the salary, wage, bonus
         or other compensation of any directors, officers or key employees,
         except: (x) for grants or awards to directors, officers and employees
         of it or its Subsidiaries under existing Compensation and Benefit Plans
         in such amounts and on such terms as are consistent with past practice;
         (y) in the ordinary and usual course of its business (which may include
         normal periodic performance reviews and related compensation and
         benefit increases and the provision of individual PageNet Compensation
         and Benefit Plans consistent with past practice for promoted or newly
         hired officers and employees on terms consistent with past practice);or
         (z) for actions necessary to satisfy existing contractual obligations
         under Compensation and Benefit Plans existing as of the date of this
         Agreement;

                           (v)      Neither it nor any of its Subsidiaries shall
         incur, repay or retire prior to maturity or refinance any indebtedness
         for borrowed money or guarantee any such indebtedness or issue, sell,
         repurchase or redeem prior to maturity any debt securities or warrants
         or rights to acquire any debt securities or guarantee any debt
         securities of others, except (A) in the ordinary and usual course of
         its business, (B) for any refinancing of such indebtedness or debt
         securities on terms no less favorable in the aggregate to PageNet and
         which would not prevent, materially delay or materially impair
         PageNet's ability to consummate the transactions contemplated by this
         Agreement, and (C) for any retirement in exchange for PageNet Shares
         consistent with past practice;

                           (vi)     Neither it nor any of its Subsidiaries shall
         make any capital expenditures in an aggregate amount in excess of the
         aggregate amount reflected in PageNet's capital expenditure budget for
         the fiscal years ending December 31, 1999 and 2000, a copy of which has
         been provided to Arch;

                           (vii)    Neither it nor any of its Subsidiaries shall
         issue, deliver, sell, pledge or encumber shares of any class of its
         capital stock or any securities convertible or




                                       24


<PAGE>   33
         exchangeable into, or any rights, warrants or options to acquire, or
         any bonds, debentures, notes, or other debt obligations having the
         right to vote or that are convertible or exercisable for, any such
         shares, except PageNet may issue PageNet Shares in exchange for
         indebtedness or debt securities pursuant to clause (v) above;

                           (viii)   Neither it nor any of its Subsidiaries shall
         authorize, propose or announce an intention to authorize or propose, or
         enter into an agreement with respect to, any merger, consolidation or
         business combination (other than the Merger), or any purchase, sale,
         lease, license or other acquisition or disposition of any business or
         of a material amount of assets or securities, except for transactions
         entered into in the ordinary and usual course of its business, except
         for any acquisition of assets or any investment having a cash purchase
         price of $25,000,000 or less in any single instance and $50,000,000 or
         less in the aggregate where such acquisition or investment would not
         prevent, materially delay or materially impair PageNet's ability to
         consummate the transactions contemplated by this Agreement;

                           (ix)     PageNet shall not make any material change
         in its accounting policies or procedures, other than any such change
         that is required by GAAP;

                           (x)      PageNet shall not release, assign, settle or
         compromise any material claims or litigation in excess of $300,000 or
         make any material tax election or settle or compromise any material
         federal, state, local or foreign tax liability; and

                           (xi)     Neither it nor any of its Subsidiaries shall
         authorize or enter into any agreement to do any of the foregoing.

                  (b)      Arch covenants and agrees as to itself and its
         Subsidiaries that, from and after the date of this Agreement and prior
         to the Effective Time (unless PageNet shall otherwise approve in
         writing and except as otherwise expressly contemplated by this
         Agreement, disclosed in the Arch Disclosure Letter, or required by
         applicable Law):

                           (i)      Its business and the business of its
         Subsidiaries shall be conducted only in the ordinary and usual course
         and, to the extent consistent therewith, it and its Subsidiaries shall
         use their reasonable best efforts to preserve their respective business
         organizations intact and maintain their respective existing relations
         and goodwill with customers, suppliers, regulators, distributors,
         creditors, lessors, employees and business associates;

                           (ii)     It shall not: (A) amend its certificate of
         incorporation or bylaws; (B) split, combine, subdivide or reclassify
         its outstanding shares of capital stock; (C) declare, set aside or pay
         any dividend payable in cash, stock or property with respect to




                                       25


<PAGE>   34
         any capital stock, except for a dividend that would be received by
         holders of PageNet Shares on an equivalent post-Merger basis per share
         of Arch Common Stock after the Effective Time; or (D) repurchase,
         redeem or otherwise acquire, except in connection with existing
         commitments under Arch Stock Plans but subject to Arch' obligations
         under subparagraph (iii) below, or permit any of its Subsidiaries to
         purchase or otherwise acquire, any shares of its capital stock or any
         securities convertible into, or exchangeable or exercisable for, any
         shares of its capital stock;

                           (iii)    Neither it nor any of its Subsidiaries shall
         take any action that would prevent the Merger from qualifying as a
         "reorganization" within the meaning of Section 368(a) of the Code or
         that would cause any of its representations and warranties in this
         Agreement to become untrue in any material respect;

                           (iv)     Neither it nor any of its ERISA Affiliates
         shall: (A) accelerate, amend or change the period of exercisability of
         or terminate, establish, adopt, enter into, make any new grants or
         awards of stock-based compensation or other benefits under any
         Compensation and Benefit Plans; (B) amend or otherwise modify any
         Compensation and Benefit Plan; or (C) increase the salary, wage, bonus
         or other compensation of any directors, officers or key employees,
         except: (x) for grants or awards to directors, officers and employees
         of it or its Subsidiaries under existing Compensation and Benefit Plans
         in such amounts and on such terms as are consistent with past practice;
         (y) in the ordinary and usual course of its business (which may include
         normal periodic performance reviews and related compensation and
         benefit increases and the provision of individual Arch Compensation and
         Benefit Plans consistent with past practice for promoted or newly hired
         officers and employees on terms consistent with past practice); or (z)
         for actions necessary to satisfy existing contractual obligations under
         its Compensation and Benefit Plans existing as of the date of this
         Agreement;

                           (v)      Neither it nor any of its Subsidiaries shall
         incur, repay or retire prior to maturity or refinance any indebtedness
         for borrowed money or guarantee any such indebtedness or issue, sell,
         repurchase or redeem prior to maturity any debt securities or warrants
         or rights to acquire any debt securities or guarantee any debt
         securities of others, except in (A) the ordinary and usual course of
         its business, (B) for any refinancing of such indebtedness or debt
         securities on terms no less favorable in the aggregate to Arch and
         which would not prevent, materially delay or materially impair Arch' or
         Merger Sub's ability to consummate the transactions contemplated by
         this Agreement, and (C) for any retirement in exchange for shares of
         Arch Common Stock consistent with past practice;

                           (vi)     Neither it nor any of its Subsidiaries shall
         make any capital expenditures in an aggregate amount in excess of the
         aggregate amount reflected in Arch'



                                       26


<PAGE>   35
         capital expenditure budget for the fiscal years ending December 31,
         1999 and 2000, a copy of which has been provided to PageNet;

                           (vii)    Neither it nor any of its Subsidiaries shall
         issue, deliver, sell, pledge or encumber shares of any class of its
         capital stock or any securities convertible or exchangeable into, or
         any rights, warrants or options to acquire, or any bonds, debentures,
         notes, or other debt obligations having the right to vote or that are
         convertible or exercisable for, any such shares, except Arch may issue
         shares of Arch Common Stock issued in exchange for indebtedness or debt
         securities pursuant to clause (v) above;

                           (viii)   Neither it nor any of its Subsidiaries shall
         authorize, propose or announce an intention to authorize or propose, or
         enter into an agreement with respect to, any merger, consolidation or
         business combination (other than the Merger), or any purchase, sale,
         lease, license or other acquisition or disposition of any business or
         of a material amount of assets or securities, except for transactions
         entered into in the ordinary and usual course of its business, except
         for any acquisition of assets or any investment having a cash purchase
         price of $25,000,000 or less in any single instance and $50,000,000 or
         less in the aggregate where such acquisition or investment would not
         prevent, materially delay or materially impair Arch' or Merger Sub's
         ability to consummate the transactions contemplated by this Agreement;

                           (ix)     Arch shall not make any material change in
         its accounting policies or procedures, other than any such change that
         is required by GAAP;

                           (x)      Arch shall not release, assign, settle or
         compromise any material claims or litigation in excess of $300,000 or
         make any material tax election or settle or compromise any material
         federal, state, local or foreign tax liability; and

                           (xi)     Neither it nor any of its Subsidiaries shall
         authorize or enter into any agreement to do any of the foregoing.

                  (c)      Arch and PageNet agree that any written approval
         obtained under this Section 6.1 must be signed, if on behalf of Arch,
         by the Chief Executive Officer or the Chief Financial Officer of Arch,
         or if on behalf of PageNet, by the Chairman of the Board and Chief
         Executive Officer or President and Chief Operating Officer of PageNet.

                  (d)      Notwithstanding any other provision hereof to the
         contrary, PageNet may, after the date hereof (i) issue, deliver, sell,
         pledge or encumber in arms-length transactions with unaffiliated third
         parties shares of any class of capital stock of the Distributed
         Subsidiary or any securities convertible or exchangeable into, or any
         rights, warrants or options to acquire, or any bonds, debentures,
         notes, or other debt obligations having the



                                       27


<PAGE>   36
         right to vote or that are convertible or exercisable for, any such
         shares of the Distributed Subsidiary, (ii) cause the Distributed
         Subsidiary to incur any indebtedness for borrowed money, if all
         proceeds thereof are used solely by the Distributed Subsidiary, (iii)
         transfer the assets set forth in the corresponding section of the
         PageNet Disclosure Letter to the Distributed Subsidiary, (iv) determine
         the form of security or securities representing the equity ownership of
         the Distributed Subsidiary to be distributed to the holders of PageNet
         Shares or PageNet Notes pursuant to Sections 6.18 and 6.22 of this
         Agreement and designate the rights and restrictions applicable to such
         securities, (v) establish an employee stock option, stock ownership or
         other similar plan and set aside common equity (of the same type as the
         Distributed Interests or any securities underlying such Distributed
         Interests) representing up to 15% of the equity ownership of the
         Distributed Subsidiary for such purpose, or (vi) enter into such
         transactions, arrangements or agreements with the Distributed
         Subsidiary on terms and conditions approved by Arch or cause the
         Distributed Subsidiary to enter into arms-length transactions,
         arrangements or agreements with third parties, in each case, as are
         reasonably necessary and appropriate to permit the Distributed
         Subsidiary to continue its business and operations in the ordinary
         course following the Merger; PROVIDED, that the taking of such action
         shall not cause Arch or the Surviving Corporation (other than through
         its ownership of capital stock in the Distributed Subsidiary after the
         Effective Time) to incur any liability or obligation which would not
         have been incurred by the Surviving Corporation pursuant to the Merger
         or the other transactions contemplated hereby. It is understood and
         agreed by the parties to this Agreement, that in the event that, prior
         to or at the Effective Time, PageNet shall take any action set forth in
         (i), (ii), (v) or (vi) above that reduces the aggregate amount of
         Distributed Interests available to be distributed to the parties, the
         distribution of the Distributed Interests will be ratably adjusted such
         that holders of PageNet Shares at the Spinoff Record Date and holders
         of PageNet Notes immediately prior to the Effective Time receive 80.5%
         of the remaining interests in the Distributed Subsidiary and the
         Surviving Corporation receives 19.5% of the remaining interests in the
         Distributed Subsidiary.

         6.2.     ACQUISITION PROPOSALS.

                  (a)      Except as set forth in Section 6.1(d) of this
         Agreement, PageNet and Arch each agree that neither it nor any of its
         Subsidiaries nor any of the officers and directors of it or its
         Subsidiaries shall, and that each shall direct and use its best efforts
         to cause its and its Subsidiaries' employees, agents and
         representatives (including any investment banker, attorney or
         accountant retained by it or any of its Subsidiaries) (PageNet or Arch,
         as the case may be, its respective Subsidiaries and their officers,
         directors, employees, agents and representatives being referred to as
         its "REPRESENTATIVES") not to, directly or indirectly, initiate,
         solicit, encourage or otherwise facilitate any inquiries or the making
         of any proposal or offer with respect to a merger, reorganization,
         acquisition, share exchange, consolidation, business combination,
         recapitalization, liquidation, dissolution or similar transaction
         involving



                                       28


<PAGE>   37
         it, or any purchase or sale of the consolidated assets (including
         without limitation stock of Subsidiaries) of it or any of its
         Subsidiaries, taken as a whole, having an aggregate value equal to 10%
         or more of its assets, or any purchase or sale of, or tender or
         exchange offer for, 15% or more of its equity securities (any such
         proposal or offer being referred to as an "ACQUISITION PROPOSAL").
         PageNet and Arch further agree that neither it nor any of its
         Subsidiaries nor any of the officers and directors of it or its
         Subsidiaries shall, and that it shall direct and use its best efforts
         to cause its Representatives not to, directly or indirectly, have any
         discussion with, or provide any confidential information or data to,
         any Person relating to, or in contemplation of, an Acquisition Proposal
         or engage in any negotiations concerning an Acquisition Proposal, or
         otherwise facilitate any effort or attempt to make or implement an
         Acquisition Proposal; PROVIDED, HOWEVER, that nothing contained in this
         Agreement shall prevent PageNet, Arch or their respective Board of
         Directors from: (A) complying with Rule 14e-2 promulgated under the
         Exchange Act with regard to an Acquisition Proposal; (B) engaging in
         any discussions or negotiations with or providing any information to,
         any Person in response to an unsolicited bona fide written Acquisition
         Proposal by any such Person; or (C) subject to the obligation of (x)
         PageNet pursuant to Section 6.5(a) to duly convene a PageNet
         Stockholders Meeting at which a vote of the stockholders of PageNet
         shall be taken regarding the adoption of this Agreement and the
         approval of the Merger and the other transactions contemplated by this
         Agreement, and (y) Arch pursuant to Section 6.5(b) to duly convene a
         Arch Stockholders Meeting at which a vote of the stockholders of Arch
         shall be taken with respect to the matters set forth in Section 6.5(b)
         of this Agreement, recommending such an unsolicited bona fide written
         Acquisition Proposal to its stockholders if, and only to the extent
         that, with respect to the actions referred to in clauses (B) or (C):
         (i) its Board of Directors concludes in good faith (after consultation
         with its outside legal counsel and its financial advisor) that such
         Acquisition Proposal is reasonably capable of being completed, taking
         into account all legal, financial, regulatory and other aspects of the
         proposal and the Person making the proposal, and would, if consummated,
         result in a transaction more favorable to its stockholders from a
         financial point of view than the transaction contemplated by this
         Agreement (any such Acquisition Proposal being referred to herein as a
         "SUPERIOR PROPOSAL"); (ii) its Board of Directors determines in good
         faith after consultation with outside legal counsel that such action is
         necessary for the Board of Directors to comply with its fiduciary duty
         to its stockholders under applicable Law; and (iii) prior to providing
         any information or data to any Person in connection with a Superior
         Proposal by any such Person, its Board of Directors shall receive from
         such Person an executed confidentiality agreement on terms
         substantially similar to those contained in the Confidentiality
         Agreement (as defined in Section 6.15); PROVIDED, that such
         confidentiality agreement shall contain terms that allow it to comply
         with its obligations under this Section 6.2.

                  (b)      PageNet and Arch each agree that it will immediately
         cease and cause to be terminated any existing activities, discussions
         or negotiations with any parties conducted




                                       29


<PAGE>   38
         heretofore with respect to any Acquisition Proposal. PageNet and Arch
         each agree that it will take the necessary steps to promptly inform
         each of its Representatives of the obligations undertaken in Section
         6.2(a). PageNet and Arch each agree that it will notify the other party
         immediately if any such inquiries, proposals or offers are received by,
         any such information is requested from, or any such discussions or
         negotiations are sought to be initiated or continued with, any of its
         Representatives indicating, in connection with such notice, the name of
         such Person making such inquiry, proposal, offer or request and the
         substance of any such inquiries, proposals or offers. Such party
         thereafter shall keep the other informed, on a current basis, of the
         status and terms of any such inquiries, proposals or offers and the
         status of any such discussions or negotiations. PageNet and Arch each
         also agree that it will promptly request each Person that has
         heretofore executed a confidentiality agreement in connection with its
         consideration of any Acquisition Proposal to return all confidential
         information heretofore furnished to such Person by, or on behalf of, it
         or any of its Subsidiaries.

         6.3.     THE CERTIFICATE AMENDMENTS. Arch shall take all actions
necessary (subject to applicable law and any necessary stockholder approval) to
adopt the Certificate Amendments. The Certificate Amendments shall provide for
(i) an increase in the authorized number of shares of Arch Common Stock to an
amount sufficient to effectuate the actions contemplated hereby and (ii) the
conversion of each Arch Series C Preferred Share into shares of Arch Common
Stock as described in this Agreement. Some or all of the Certificate Amendments
may, in the discretion of Arch, be made contingent upon the consummation of the
Merger or the Alternative Merger (as the case may be).

         6.4.     INFORMATION SUPPLIED. PageNet and Arch each agrees, as to
itself and its Subsidiaries, that none of the information supplied or to be
supplied by it or its Subsidiaries for inclusion or incorporation by reference
in: (i) the Registration Statement on Form S-4 to be filed with the SEC by Arch
in connection with the issuance of shares of Arch Common Stock in the Merger
(including the joint proxy statement and prospectus (the "PROSPECTUS/PROXY
STATEMENT") constituting a part thereof) (the "S-4 REGISTRATION STATEMENT")
will, at the time the S-4 Registration Statement becomes effective under the
Securities Act; and (ii) the Prospectus/Proxy Statement and any amendment or
supplement thereto will, at the date of mailing to stockholders and at the time
of each of the PageNet Stockholders Meeting and the Arch Stockholders Meeting to
be held in connection with the Merger, in any such case, contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein, in light of
the circumstances under which they were made, not misleading. If at any time
prior to the Effective Time any information relating to Arch or PageNet, or any
of their respective affiliates (as defined in SEC Rule 12b-2), officers or
directors, is discovered by Arch or PageNet which should be set forth in an
amendment or supplement to any of the S-4 Registration Statement or the
Prospectus/Proxy Statement, so that any of such documents would not include any
misstatement of a material fact or would omit to state any material fact
required to be stated therein




                                       30


<PAGE>   39
or necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading, the party which discovers such
information shall promptly notify the other parties to this Agreement and an
appropriate amendment or supplement describing such information shall be
promptly filed with the SEC and, to the extent required by law, disseminated to
the stockholders of PageNet and Arch.

         6.5.     STOCKHOLDERS MEETINGS.

                  (a)      PageNet will take, in accordance with applicable Law
         and its certificate of incorporation and bylaws, all action necessary
         to convene a meeting of its stockholders (the "PAGENET STOCKHOLDERS
         MEETING") as promptly as practicable after the S-4 Registration
         Statement is declared effective to consider and vote upon the adoption
         of this Agreement, and to approve the Merger, an amendment to the
         PageNet certificate of incorporation to increase the number of PageNet
         Shares authorized to an amount sufficient to complete the transactions
         contemplated by this Agreement and the other transactions contemplated
         by this Agreement. PageNet will take all necessary action to obtain the
         adoption of this Agreement, the approval of the Merger, the amendment
         to the PageNet certificate of incorporation to increase the number of
         PageNet Shares authorized to the amount sufficient to complete the
         transactions contemplated by this Agreement and the other transactions
         contemplated by this Agreement by the holders of the PageNet Shares
         (the "PAGENET STOCKHOLDERS APPROVAL"). The Board of Directors of
         PageNet shall: (i) recommend that the stockholders adopt this Agreement
         and thereby approve the Merger and the other transactions contemplated
         by this Agreement (including without limitation adoption of the
         Prepackaged Plan and authorization of the Bankruptcy Case) and the
         amendment to the PageNet certificate of incorporation to increase the
         number of PageNet Shares authorized to the amount sufficient to
         complete the transactions contemplated by this Agreement; and (ii) take
         all lawful action to solicit such adoption and approval; PROVIDED,
         HOWEVER, that PageNet's Board of Directors may, at any time prior to
         the Effective Time, withdraw, modify or change any such recommendation
         to the extent that PageNet's Board of Directors determines in good
         faith, after consultation with outside legal counsel, that such
         withdrawal, modification or change of its recommendation is required by
         its fiduciary duties to PageNet's stockholders under applicable Law;
         PROVIDED, FURTHER, that, unless this Agreement is terminated by Arch
         pursuant to Section 8.4, PageNet shall, as promptly as practicable
         after the S-4 Registration Statement is declared effective, duly
         convene and complete the PageNet Stockholders Meeting regarding the
         adoption of this Agreement and the approval of the Merger, the
         amendment to the PageNet certificate of incorporation set forth above
         and the other transactions contemplated by this Agreement, regardless
         of whether PageNet's Board of Directors has withdrawn, modified, or
         changed its recommendation to the stockholders regarding the adoption
         of this Agreement or the approval of the Merger, the amendment to the
         PageNet certificate of incorporation set forth above or the other
         transactions contemplated by this Agreement prior to such PageNet




                                       31


<PAGE>   40
         Stockholders Meeting. Notwithstanding the foregoing or any other
         provision of this Agreement to the contrary, PageNet shall not be
         required to convene a PageNet Stockholders Meeting after (x) the
         Bankruptcy Case has commenced or (y) PageNet stipulates to bankruptcy
         relief after the occurrence of an Involuntary Insolvency Event pursuant
         to Section 6.19(a)(v) hereof.

                  (b)      Arch will take, in accordance with applicable Law and
         its certificate of incorporation and bylaws, all action necessary to
         convene a meeting of its stockholders (the "ARCH STOCKHOLDERS MEETING")
         as promptly as practicable after the S-4 Registration Statement is
         declared effective to (i) consider and vote upon (A) the Certificate
         Amendments and the issuance of shares of Arch Common Stock pursuant to
         the Merger, the conversion of the Arch Series C Preferred Shares and
         the Arch Exchange Offer or (B) if the Alternative Merger is elected
         pursuant to Section 4.5 and Arch is a party to the Alternative Merger,
         the adoption of this Agreement and the approval of the Alternative
         Merger and the other transactions contemplated by this Agreement
         (including the actions contemplated by the Certificate Amendments,
         which may be effectuated pursuant to a certificate of merger filed in
         connection with such Alternative Merger); and (ii) to approve any
         actions necessary pursuant to Section 3.1 hereof (the "ARCH
         STOCKHOLDERS APPROVAL"). Arch will take all necessary action to obtain
         such consents and approvals. The Board of Directors of Arch shall: (i)
         recommend that the stockholders adopt the Certificate Amendments and
         approve the issuance of Arch Common Stock pursuant to the Merger, the
         conversion of the Arch Series C Preferred Shares and the Arch Exchange
         Offer (or this Agreement and the Alternative Merger if Arch is a party
         to the Alternative Merger) and the other transactions contemplated by
         this Agreement; and (ii) take all lawful action to solicit such
         adoption; PROVIDED, HOWEVER, that Arch' Board of Directors may, at any
         time prior to the Effective Time, withdraw, modify or change any such
         recommendation to the extent that Arch' Board of Directors determines
         in good faith, after consultation with outside legal counsel, that such
         withdrawal, modification or change of its recommendation is required by
         its fiduciary duties to Arch' stockholders under applicable Law;
         PROVIDED, FURTHER, that, unless this Agreement is terminated by PageNet
         pursuant to Section 8.3, Arch shall, as promptly as practicable after
         the S-4 Registration Statement is declared effective, duly convene and
         complete the Arch Stockholders Meeting regarding the adoption of the
         Certificate Amendments and the issuance of shares of Arch Common Stock
         pursuant to the Merger, the conversion of the Arch Series C Preferred
         Shares and the Arch Exchange Offer (or this Agreement and the
         Alternative Merger if Arch is a party to the Alternative Merger) and
         the other transactions contemplated by this Agreement, regardless of
         whether Arch' Board of Directors has withdrawn, modified, or changed
         its recommendation to the stockholders regarding the adoption of the
         Certificate Amendments and the issuance of shares of Arch Common Stock
         pursuant to the Merger, the conversion of the Arch Series C Preferred
         Shares and the Arch Exchange Offer (or this Agreement and the
         Alternative




                                       32


<PAGE>   41
         Merger if Arch is a party to the Alternative Merger) or the other
         transactions contemplated by this Agreement prior to such Arch
         Stockholders Meeting.

         6.6.     FILINGS; OTHER ACTIONS; NOTIFICATION.

                  (a)      Arch and PageNet shall promptly prepare and file with
         the SEC the Prospectus/Proxy Statement, and Arch shall prepare and file
         with the SEC the S-4 Registration Statement as promptly as practicable.
         Arch and PageNet each shall use its reasonable best efforts to have the
         S-4 Registration Statement declared effective under the Securities Act
         as promptly as practicable and on the same day as each of the Exchange
         Registration Statements, and promptly thereafter mail the
         Prospectus/Proxy Statement to the stockholders of Arch and PageNet.
         Arch shall also use its reasonable best efforts to obtain prior to the
         effective date of the S-4 Registration Statement all necessary state
         securities law or "blue sky" permits and approvals required in
         connection with the Merger and the other transactions contemplated by
         this Agreement and will pay all expenses incident thereto. Each party
         shall notify the other of the receipt of the comments of the SEC and of
         any requests by the SEC for amendments or supplements to the
         Prospectus/Proxy Statement or the S-4 Registration Statement or for
         additional information and shall promptly supply one another with
         copies of all correspondence between any of them (or their
         Representatives) and the SEC (or its staff) with respect thereto. If,
         at any time prior to either of the Arch Stockholders Meeting or the
         PageNet Stockholders Meeting, any event shall occur relating to or
         affecting Arch, PageNet, or their respective officers or directors,
         which event should be described in an amendment or supplement to the
         Prospectus/Proxy Statement or the S-4 Registration Statement, the
         parties shall promptly inform one another and shall cooperate in
         promptly preparing filing and clearing with the SEC and, if required by
         applicable securities laws, mailing to Arch' or PageNet's stockholders,
         as the case may be, such amendment or supplement.

                  (b)      PageNet and Arch each shall use its respective
         reasonable best efforts to cause to be delivered to the other party and
         its directors a letter of its independent auditors, dated: (i) the date
         on which the S-4 Registration Statement and the Exchange Registration
         Statements shall become effective; and (ii) the Closing Date, and
         addressed to the other party and its directors, in form and substance
         customary for "comfort" letters delivered by independent public
         accountants in connection with registration statements similar to the
         S-4 Registration Statement and the Exchange Registration Statements.

                  (c)      PageNet and Arch shall cooperate with each other and
         use (and shall cause their respective Subsidiaries to use) their
         respective reasonable best efforts: (i) to take or cause to be taken
         all actions, and do or cause to be done all things, necessary, proper
         or advisable on its part under this Agreement and applicable Laws to
         consummate and make effective the Merger, the Exchange Offers and the
         other transactions contemplated by this




                                       33


<PAGE>   42
         Agreement (including, if necessary, the Prepackaged Plan) as soon as
         practicable, including: (A) obtaining opinions of their respective
         attorneys referred to in Article VII below; (B) preparing and filing as
         promptly as practicable all documentation to effect all necessary
         applications, notices, petitions, filings and other documents; and (C)
         instituting court actions or other proceedings necessary to obtain the
         approvals required to consummate the Merger, the Exchange Offers or the
         other transactions contemplated by this Agreement or defending or
         otherwise opposing all court actions or other proceedings instituted by
         a Governmental Entity or other Person under the Governmental
         Regulations for purposes of preventing the consummation of the Merger,
         the Exchange Offers and the other transactions contemplated by this
         Agreement; and (ii) to obtain as promptly as practicable all consents,
         registrations, approvals, permits and authorizations necessary or
         advisable to be obtained from any third party and/or any Governmental
         Entity in order to consummate the Merger, the Exchange Offers or any of
         the other transactions contemplated by this Agreement; PROVIDED,
         HOWEVER, that nothing in this Section 6.5 shall require either Arch or
         PageNet to agree to any divestitures or hold separate or similar
         arrangements if such divestitures or arrangements would reasonably be
         expected to have a material adverse effect on Arch or PageNet, or a
         material adverse effect on the expected benefits of the Merger to it.
         Neither Arch nor PageNet will agree to any divestitures or hold
         separate or similar arrangements without the prior written approval of
         the other party. Subject to applicable laws relating to the exchange of
         information, Arch and PageNet shall have the right to review in
         advance, and to the extent practicable each will consult the other
         party on, all the information relating to Arch or PageNet, as the case
         may be, and any of their respective Subsidiaries, that appear in any
         filing made with, or written materials submitted to, any third party
         and/or any Governmental Entity in connection with the Merger and the
         other transactions contemplated by this Agreement. In exercising the
         foregoing right, each of PageNet and Arch shall act reasonably and as
         promptly as practicable.

                  (d)      PageNet and Arch each shall, upon request by the
         other party, furnish the other party with all information concerning
         itself, its Subsidiaries, directors, officers and stockholders and such
         other matters as may be reasonably necessary or advisable in connection
         with the Prospectus/Proxy Statement, the S-4 Registration Statement,
         the Exchange Registration Statements or any other statement, filing,
         notice or application made by, or on behalf of, Arch, PageNet or any of
         their respective Subsidiaries to any third party and/or any
         Governmental Entity in connection with the Merger, the Exchange Offers
         and the transactions contemplated by this Agreement.

                  (e)      PageNet and Arch each shall keep the other party
         apprised of the status of matters relating to completion of the
         transactions contemplated by this Agreement, including promptly
         furnishing the other party with copies of notices or other
         communications received by Arch or PageNet, as the case may be, or any
         of its Subsidiaries, from any third party and/or any Governmental
         Entity with respect to the Merger, the Exchange Offers and the




                                       34


<PAGE>   43
         other transactions contemplated by this Agreement. Each of PageNet and
         Arch shall give prompt notice to the other party of any change that is
         reasonably likely to result in a Material Adverse Effect on it or of
         any failure of any conditions to the other party's obligations to
         effect the Merger set forth in Article VII.

                  (f)      Each of PageNet and Arch agrees that if a bona fide
         Acquisition Proposal is made to acquire shares of the other party to
         this Agreement, then upon the request of the party not receiving the
         Acquisition Proposal, the party receiving the Acquisition Proposal will
         cooperate with the other party to this Agreement to make such filings
         and take such other actions as may be permitted or required under the
         FCC's Policy Statement in Tender Offers and Proxy Contests, in order to
         allow the parties to this Agreement to take all steps as are necessary
         to consummate the transactions contemplated hereby pending FCC approval
         of the transaction.

         6.7.     ACCESS; CONSULTATION. Upon reasonable notice, and except as
may be prohibited by applicable Law, PageNet and Arch each shall (and shall
cause its Subsidiaries to) afford the other and its respective Representatives,
reasonable access, during normal business hours throughout the period prior to
the Effective Time, to its properties, books, contracts and records and, during
such period, each shall (and shall cause its Subsidiaries to) furnish promptly
to the other party all information concerning its business, properties and
personnel as may reasonably be requested; PROVIDED that no investigation
pursuant to this section shall affect or be deemed to modify any representation
or warranty made by PageNet or Arch under this Agreement; and PROVIDED, FURTHER,
that the foregoing shall not require PageNet or Arch to permit any inspection,
or to disclose any information, that in the reasonable judgment of PageNet or
Arch, as the case may be, would result in the disclosure of any trade secrets of
it or third parties, or violate any of its obligations with respect to
confidentiality if PageNet or Arch, as the case may be, shall have used all
reasonable efforts to obtain the consent of such third party to such inspection
or disclosure. All requests for information made pursuant to this section shall
be directed to an executive officer of PageNet or Arch, as the case may be, or
such Person as may be designated by any such executive officer, as the case may
be.

         6.8.     AFFILIATES. PageNet shall deliver to Arch a letter identifying
all Persons whom PageNet believes to be, at the date of its Stockholders
Meeting, affiliates of PageNet for purposes of Rule 145 under the Securities Act
("RULE 145 AFFILIATES"). PageNet shall use all reasonable efforts to cause each
Person who is identified as a Rule 145 Affiliate in the letter referred to above
to deliver to Arch on or prior to the date of such party's respective
Stockholders Meeting a written agreement, in the form attached as EXHIBIT C (the
"PAGENET AFFILIATES AGREEMENT"). Prior to the Effective Time, PageNet shall use
all reasonable efforts to cause each additional Person who is identified as a
Rule 145 Affiliate after the date of its Stockholders Meeting to execute the
applicable written agreement as set forth in this Section 6.8, as soon as
practicable after such Person is identified.




                                       35


<PAGE>   44

                  6.9.     STOCK EXCHANGE LISTING. To the extent they are not
already listed, Arch shall use its reasonable best efforts to cause the shares
of Arch Common Stock to be issued pursuant to the Merger, Arch Exchange Offer
and pursuant to the Certificate Amendments to be approved for listing on the
Nasdaq National Market (the "NASDAQ") and on all other stock exchanges on which
shares of Arch Common Stock are then listed, subject to official notice of
issuance, prior to the Closing Date.

                  6.10.    PUBLICITY. The initial press release with respect to
the Merger shall be a joint press release. Thereafter PageNet and Arch shall
consult with each other prior to issuing any press releases or otherwise making
public announcements with respect to the Merger, the Exchange Offers and the
other transactions contemplated by this Agreement and prior to making any
filings with any third party and/or any Governmental Entity (including any
securities exchange) with respect thereto, except as may be required by Law or
by obligations pursuant to any listing agreement with, or rules of, any
securities exchange.

         6.11.    BENEFITS.

                  (a)      STOCK OPTIONS.

                           (i)      At the Effective Time, each outstanding
         option to purchase PageNet Shares (a "PAGENET OPTION") under PageNet
         Stock Plans, and which has not vested prior to the Effective Time,
         shall become fully exercisable and vested as of the Effective Time. At
         the Effective Time, each PageNet Option shall be converted to an option
         to acquire, on the same terms and conditions as were applicable under
         such PageNet Option, the same number of shares of Arch Common Stock as
         the holder of such PageNet Option would have been entitled to receive
         pursuant to the Merger had such holder exercised such PageNet Option in
         full immediately prior to the Effective Time (rounded down to the
         nearest whole number) (a "SUBSTITUTE OPTION"), at an exercise price per
         share (rounded to the nearest whole cent) equal to: (y) the aggregate
         exercise price for PageNet Shares otherwise purchasable by such holder
         pursuant to such PageNet Option; divided by (z) the number of full
         shares of Arch Common Stock deemed purchasable pursuant to such PageNet
         Option in accordance with the foregoing.

                           (ii)     Notwithstanding the foregoing provisions, in
         the case of any option to which Code Section 421 applies, the option
         price, the number of shares subject to such option, and the terms and
         conditions of exercise of such option shall be determined in order to
         comply with Code Section 424(a). As promptly as practicable after the
         Effective Time, Arch shall deliver to the participants in PageNet Stock
         Plans appropriate notices setting forth such participants' rights
         pursuant to the Substitute Options.





                                       36


<PAGE>   45
                           (iii)    With respect to each of the directors and
         officers of PageNet identified in Section 6.11(a)(iii) of the PageNet
         Disclosure Letter (each, a "SECTION 16 PERSON"), the full Board of
         Directors of PageNet shall approve the disposition by each such Section
         16 Person of the PageNet equity securities (including derivative
         securities) set forth next to such Section 16 Person's name in Section
         6.11(a)(iii) of the PageNet Disclosure Letter and the full Board of
         Directors of Arch shall approve the acquisition by each such Section 16
         Person of the Arch equity securities (including derivative securities)
         set forth next to such Section 16 Person's name in Section 6.11(a)(iii)
         of the PageNet Disclosure Letter. Each such approval shall specify, in
         the form set forth in Section 6.11(a)(iii) of the PageNet Disclosure
         Letter, the material terms of the derivative securities and each such
         approval shall specify that the approval is granted for purposes of
         exempting the transaction under Rule 16b-3 under the Exchange Act.

                  (b)      CONVERSION AND REGISTRATION. At or prior to the
         Effective Time, PageNet shall make all necessary arrangements with
         respect to PageNet Stock Plans to permit the conversion of the
         unexercised PageNet Options into Substitute Options pursuant to this
         section and, as soon as practicable after the Effective Time, Arch
         shall use its reasonable best efforts to register under the Securities
         Act on Form S-8 or other appropriate form (and use its best efforts to
         maintain the effectiveness thereof) shares of Arch Common Stock
         issuable pursuant to all Substitute Options.

                  (c)      AMENDMENT TO 401(K) PLAN. Prior to the Effective
         Time, PageNet shall (i) amend the PageNet Employees Savings Plan and
         the related trust to prohibit the investment of Employer Salary
         Reduction Contributions in equity securities of PageNet (ii) deregister
         interests under such plan and any registered but unsold equity
         securities of PageNet under the Securities Act of 1933 and the Exchange
         Act.

         6.12.    EXPENSES. Whether or not the Merger is consummated, all costs
and expenses incurred in connection with this Agreement, the Merger, the
Exchange Offers and the other transactions contemplated by this Agreement shall
be paid by the party incurring such cost and expense, except that costs and
expenses incurred in connection with the filing fee for the S-4 Registration
Statement and the Exchange Registration Statements, printing and mailing the
Prospectus/Proxy Statement, the S-4 Registration Statement and the Exchange
Registration Statements, and the filing fees under the HSR Act, any other
filings fees under any Governmental Regulations, and any filings fees in
connection with obtaining approvals under the Communications Act, FCC
Regulations and State Laws shall be shared equally by Arch and PageNet.




                                       37


<PAGE>   46
         6.13.    INDEMNIFICATION; DIRECTORS' AND OFFICERS' INSURANCE.

                  (a)      For six years from and after the Effective Time, Arch
         will indemnify and hold harmless each present and former director and
         officer of PageNet (solely when acting in such capacity) determined as
         of the Effective Time (the "INDEMNIFIED PARTIES"), against any costs or
         expenses (including reasonable attorneys' fees), judgments, fines,
         losses, claims, damages or liabilities (collectively, "COSTS") incurred
         in connection with any claim, action, suit, proceeding or
         investigation, whether civil, criminal, administrative or
         investigative, arising out of or pertaining to matters existing or
         occurring at, or prior to, the Effective Time, whether asserted or
         claimed prior to, at or after the Effective Time, to the fullest extent
         that PageNet would have been permitted under Delaware law and its
         certificate of incorporation or bylaws in effect on the date of this
         Agreement to indemnify such Person (and the Surviving Corporation shall
         also advance expenses as incurred to the fullest extent permitted under
         applicable law, provided the Person to whom expenses are advanced
         provides an undertaking to repay such advances if it is ultimately
         determined that such Person is not entitled to indemnification).

                  (b)      Any Indemnified Party wishing to claim
         indemnification under paragraph (a) of this Section 6.13 shall promptly
         notify Arch, upon learning of any such claim, action, suit, proceeding
         or investigation, but the failure to so notify shall not relieve Arch
         of any liability it may have to such Indemnified Party if such failure
         does not materially prejudice the ability of Arch to defend such
         claims. In the event of any such claim, action, suit, proceeding or
         investigation (whether arising before or after the Effective Time), (i)
         Arch shall have the right to assume the defense thereof and Arch shall
         not be liable to such Indemnified Parties for any legal expenses of
         other counsel or any other expenses subsequently incurred by such
         Indemnified Parties in connection with the defense thereof, except that
         if Arch elects not to assume such defense or counsel for the
         Indemnified Parties advises that there are actual conflicts of interest
         between Arch and the Indemnified Parties, the Indemnified Parties may
         retain counsel satisfactory to them, and Arch shall pay all reasonable
         fees and expenses of such counsel for the Indemnified Parties promptly
         as statements therefor are received; PROVIDED, HOWEVER, that Arch shall
         be obligated pursuant to this paragraph (b) to pay for only one firm of
         counsel for all Indemnified Parties in any jurisdiction (unless there
         is such an actual conflict of interest), (ii) the Indemnified Parties
         will cooperate in the defense of any such matter and (iii) Arch shall
         not be liable for any settlement effected without its prior written
         consent.

                  (c)      Arch shall maintain a policy of officers' and
         directors' liability insurance for acts and omissions occurring prior
         to the Effective Time ("D&O INSURANCE") with coverage in amount and
         scope at least as favorable as PageNet's existing directors' and
         officers' liability insurance coverage for a period of six years after
         the Effective Time; provided, however, if the existing D&O Insurance
         expires, is terminated or canceled, or if the annual





                                       38


<PAGE>   47
         premium therefor is increased to an amount in excess of 200% of the
         last annual premium paid prior to the date of this Agreement (the
         "CURRENT PREMIUM"), in each case during such six year period, Arch will
         use its best efforts to obtain D&O Insurance in an amount and scope as
         great as can be obtained for the remainder of such period for a premium
         not in excess (on an annualized basis) of 200% of the Current Premium.
         The provisions of this Section 6.13(c) shall be deemed to have been
         satisfied if prepaid policies shall have been obtained by PageNet prior
         to the Closing, which policies provide such directors and officers with
         coverage for an aggregate period of six years with respect to claims
         arising from facts or events that occurred on, or prior to, the
         Effective Time, including, without limitation, with respect to the
         transactions contemplated by this Agreement. If such prepaid policies
         shall have been obtained by PageNet prior to the Closing, then Arch
         shall maintain such policies in full force and effect and shall
         continue to honor PageNet's obligations thereunder.

                  (d)      If Arch or any of its successors or assigns: (i)
         shall consolidate with, or merge into, any other corporation or entity
         and shall not be the continuing or surviving corporation or entity of
         such consolidation or merger; or (ii) shall transfer all or
         substantially all of its properties and assets to any individual,
         corporation or other entity, then and in each such case, proper
         provisions shall be made so that the successors and assigns of Arch
         shall assume all of the obligations set forth in this section. At the
         Effective Time, Arch shall assume and be bound by all of PageNet's
         indemnity obligations with respect to officers, directors and employees
         of corporations it previously acquired that are identified in the
         corresponding section of the PageNet Disclosure Letter.

                  (e)      The provisions of this section are intended to be for
         the benefit of, and shall be enforceable by, each of the Indemnified
         Parties, their heirs and their representatives.

         6.14.    TAKEOVER STATUTE. If any Takeover Statute or similar statute
or regulation is or may become applicable to this Agreement or to the other
transactions contemplated hereby or thereby, each of the parties and its Board
of Directors shall grant such approvals and take all such actions as are legally
permissible so that the transactions contemplated under such agreements may be
consummated as promptly as practicable on the terms contemplated under such
agreements and otherwise act to eliminate or minimize the effects of any such
statute or regulation on the transactions contemplated under such agreements.

         6.15.    CONFIDENTIALITY. PageNet and Arch each acknowledges and
confirms that it has entered into a Confidentiality Agreement, dated as of
August 26, 1999 (the "CONFIDENTIALITY AGREEMENT"), and that the Confidentiality
Agreement shall remain in full force and effect in accordance with its terms.





                                       39


<PAGE>   48
         6.16.    TAX-FREE REORGANIZATION. Arch, Merger Sub and PageNet shall
each use its best efforts to cause the Merger to be treated as a reorganization
with the meaning of Section 368(a) of the Code and to obtain an opinion of its
respective counsel as contemplated by Sections 7.2(d) and 7.3(d), respectively.

         6.17.    SENIOR CREDIT FACILITIES. PageNet and Arch shall use their
reasonable best efforts to secure, through the amendment or restatement of their
respective current credit facilities, through a new credit facility or through
the operation of the Prepackaged Plan, or any combination of the foregoing,
senior secured debt financing in an amount not less than $1.5 billion on terms
reasonably acceptable to the parties to this Agreement. Simultaneously with the
Exchange Offers, PageNet shall solicit the consent of the holders of PageNet's
senior credit facilities (the "PAGENET SECURED CREDITORS") to the Prepackaged
Plan. The solicitation of the PageNet Secured Creditors shall be made in
accordance with the standards and requirements set forth in Section 6.18(e).

         6.18.    THE EXCHANGE OFFERS.

                  (a)      Provided that nothing shall have occurred that would
         result in a failure to satisfy any other conditions set forth in
         Section 6.18(b) of this Agreement, Arch and PageNet shall, as promptly
         as practicable, commence separate exchange offers (the "ARCH EXCHANGE
         OFFER" and the "PAGENET EXCHANGE OFFER" and together, the "EXCHANGE
         OFFERS") to issue an aggregate of up to: (i) 29,651,980 shares of Arch
         Common Stock in exchange for the $448.4 million in aggregate principal
         amount of Arch' 107/8% Senior Discount Notes due March 15, 2008 issued
         under and pursuant to an Indenture, dated as of March 12, 1996, between
         Arch and IBJ Schroder Bank & Trust Company, as Trustee (the "ARCH
         NOTES"); and (ii) in the case of PageNet, 616,830,757 PageNet Shares
         and, subject to Section 6.1(d) of this Agreement, Distributed Interests
         representing 68.9% of the equity ownership in the Distributed
         Subsidiary in exchange for the $1.2 billion in aggregate principal
         amount, together with all accrued interest thereon, of: (x) 10% Senior
         Subordinated Notes Due October 15, 2008 issued under and pursuant to an
         Indenture, dated as of July 15, 1995, between PageNet and Shawmut Bank,
         N.A., as Trustee, as supplemented by a Second Supplemental Indenture,
         dated as of October 15, 1996, between PageNet and Fleet National Bank;
         (y) 10.125% Senior Subordinated Notes Due August 1, 2007 issued under
         and pursuant to an Indenture, dated as of July 15, 1995, between
         PageNet and Shawmut Bank, N.A., as Trustee, as supplemented by a First
         Supplemental Indenture, dated as of July 15, 1995, between PageNet and
         Shawmut Bank, N.A.; and (z) 8.875% Senior Subordinated Notes Due
         February 1, 2006 issued under and pursuant to an Indenture, dated as of
         January 15, 1994, between PageNet and Shawmut Bank, N.A., as Trustee,
         as supplemented by a First Supplemental Indenture, dated as of January
         15, 1994, between PageNet and Shawmut Bank, N.A. (collectively, the
         "PAGENET NOTES" and together with the Arch Notes, the "NOTES"). In the
         Exchange Offers, (i) Arch will offer to exchange 66.1318 shares of Arch
         Common Stock for each $1,000 principal




                                       40


<PAGE>   49
         amount, together with all accreted or accrued interest thereon, of
         outstanding Arch Notes and (ii) PageNet will offer to exchange a pro
         rata portion of 616,830,757 PageNet Shares and, subject to Section
         6.1(d) of this Agreement, Distributed Interests representing the
         portion of such equity ownership in the Distributed Subsidiary equal to
         68.9% of the total equity ownership of the Distributed Subsidiary for
         each PageNet Note (such pro rata portion to be computed immediately
         prior to the Effective Time by dividing the principal amount, together
         with all accrued interest thereon, of each PageNet Note by the
         principal amount, together with all accrued interest thereon, of all
         PageNet Notes). Calculations of share amounts for such purpose will be
         rounded down to the nearest whole share and no fractional shares of
         Arch Common Stock or PageNet Shares will be issued for Notes.

                  (b)      The obligations of Arch and PageNet under the
         Exchange Offers shall be subject to the satisfaction of the conditions
         to the consummation of the Merger set forth in Article VII of this
         Agreement and, to the further condition that, (i) in the case of the
         PageNet Exchange Offer, not less than 97.5% of the aggregate
         outstanding principal amount of PageNet Notes and not less than a
         majority of the outstanding principal amount of each series of PageNet
         Notes shall have been validly tendered in accordance with the terms of
         the PageNet Exchange Offer prior to the expiration date of the PageNet
         Exchange Offer and not withdrawn (such 97.5% of the outstanding
         principal amount of the PageNet Notes and no less than a majority of
         the outstanding principal amount of each series of PageNet Notes
         tendered and not withdrawn being herein referred to as the "PAGENET
         MINIMUM CONDITION") and (ii) in the case of the Arch Exchange Offer,
         not less than 97.5% (the "ARCH MINIMUM PERCENT") of the aggregate
         outstanding principal amount of Arch Notes shall have been validly
         tendered in accordance with the terms of the Arch Exchange Offer prior
         to the expiration date of the Arch Exchange Offer and not withdrawn;
         PROVIDED, HOWEVER, that (x) PageNet may elect, in its sole discretion,
         to waive the Arch Minimum Percent, or to lower such Arch Minimum
         Percent to any level, and require the Arch Exchange Offer to be
         consummated at such specified level (subject to applicable Law and the
         other provisions of this Agreement), and (y) at any time after either
         the PageNet Minimum Condition or the PageNet Conditions to the
         Prepackaged Plan have been satisfied, Arch may elect, in its sole
         discretion, to lower the Arch Minimum Percent to any percentage equal
         to or greater than 67% (such amount of Arch Notes tendered and not
         withdrawn, as may be adjusted by either PageNet or Arch as set forth
         above, being herein referred to as the "ARCH MINIMUM CONDITION").
         Except as otherwise provided in this Agreement, no term or condition of
         the Exchange Offers may be amended or modified without the written
         consent of the parties hereto, which consent shall not be unreasonably
         withheld.

                  (c)      Holders of Notes who tender into the Exchange Offers
         will be required, as a condition to a valid tender, to give their
         consent (the "NOTE CONSENTS") with respect to all Notes tendered by
         them to, with respect to the PageNet Notes, the Prepackaged Plan and,




                                       41


<PAGE>   50
         with respect to all Notes (including the Arch Notes), the following
         amendments to the respective indenture or supplemental indentures,
         together with such additional amendments thereto or waivers thereof as
         shall be determined and consented to by each of Arch and PageNet to be
         necessary or desirable (the "INDENTURE AMENDMENTS"): (i) amendment of
         each such indenture to the extent necessary, if any, to permit the
         completion of the Merger, the Prepackaged Plan and the other
         transactions contemplated by this Agreement; and (ii) amendments to
         eliminate (A) any covenants which may be modified or eliminated by
         majority vote of the Notes, including without limitation any covenants
         which restrict (s) the sale of assets, (t) any change of control, (u)
         the incurrence of indebtedness, (v) the making of restricted payments,
         (w) the existence of limitations on distributions by subsidiaries, (x)
         the existence of liens, (y) transactions with affiliates or related
         persons or (z) the issuance and sale of stock of subsidiaries, (B) any
         events of default which relate to (x) the non-payment or acceleration
         of other indebtedness (or notification of foreclosure proceedings with
         respect to property secured by other indebtedness), (y) the failure to
         discharge judgments for the payment of money, or (z) the bankruptcy or
         insolvency of subsidiaries, and (C) any provisions which condition
         mergers or consolidations on compliance with any financial criteria.
         Such holders will also be required, as a condition to a valid tender,
         to waive (the "NOTE WAIVERS") any and all existing defaults on or with
         respect to the Notes and any and all rights to rescind their acceptance
         of the Exchange Offer after the Exchange Offers Expiration Date (as
         defined in Section 6.18(h) hereof), such waiver of rescission rights to
         be subject, however, to their withdrawal rights under applicable law
         and regulations, or to claim any payments relating to the Notes
         tendered under applicable law and regulations, and for any other
         relief, legal or equitable, based on any possible future judicial,
         administrative or other governmental or legal determination that the
         Note Consents or the adoption of any of the Indenture Amendments are
         invalid or unenforceable. Notwithstanding anything to the contrary
         herein, the Note Waivers shall not be deemed to cover claims for
         violations of federal or state securities laws relating to the Exchange
         Offers.

                  (d)      PageNet and Arch each agrees, as to itself and its
         Subsidiaries, that none of the information supplied or to be supplied
         by it or its Subsidiaries for inclusion or incorporation by reference
         in: (i) (x) the Registration Statement on Form S-4 to be filed with the
         SEC by Arch in connection with the issuance of shares of Arch Common
         Stock in the Arch Exchange Offer (including the consent solicitation
         and prospectus (the "ARCH EXCHANGE PROSPECTUS" constituting a part
         thereof) (the "ARCH EXCHANGE REGISTRATION STATEMENT")) and (y) the
         Registration Statement on Form S-4 to be filed with the SEC by PageNet
         in connection with the issuance of PageNet Shares and Distributed
         Interests in the PageNet Exchange Offer (including the consent
         solicitation and prospectus (the "PAGENET EXCHANGE PROSPECTUS" and,
         together with the Arch Exchange Statement, the "EXCHANGE PROSPECTUSES"
         constituting a part thereof) (the "PAGENET EXCHANGE REGISTRATION
         STATEMENT" and, together with the Arch Exchange Registration Statement,
         the "EXCHANGE REGISTRATION STATEMENTS")) will, at the time the Exchange
         Registration Statements become effective under




                                       42


<PAGE>   51
         the Securities Act; and (ii) the Exchange Prospectuses and any
         amendment or supplement thereto will, at the date of mailing to
         noteholders contain any untrue statement of a material fact or omit to
         state any material fact required to be stated therein or necessary in
         order to make the statements therein, in light of the circumstances
         under which they were made, not misleading. If at any time prior to the
         Effective Time any information relating to Arch or PageNet, or any of
         their respective affiliates (as defined in SEC Rule 12b-2), officers or
         directors, is discovered by Arch or PageNet which should be set forth
         in an amendment or supplement to any of the Exchange Registration
         Statements or the Exchange Prospectuses, so that any of such documents
         would not include any misstatement of a material fact or would omit to
         state any material fact required to be stated therein or necessary to
         make the statements therein, in the light of the circumstances under
         which they were made, not misleading, the party which discovers such
         information shall promptly notify the other parties to this Agreement
         and an appropriate amendment or supplement describing such information
         shall be promptly filed with the SEC and, to the extent required by
         law, disseminated to the noteholders.

                  (e)      The PageNet Exchange Prospectus sent to the holders
         of the PageNet Notes in connection with the PageNet Exchange Offer will
         also constitute a disclosure statement for the purpose of soliciting
         the acceptances of such holders for the Prepackaged Plan (as defined in
         Section 6.19). PageNet and Arch shall consult with each other prior to
         sending the PageNet Exchange Prospectus to the holders of the PageNet
         Notes for purposes of ensuring that such materials comply with the
         disclosure requirements of the Bankruptcy Code and other applicable law
         insofar as they relate to prepackaged plans.

                  (f)      Arch and PageNet shall promptly prepare Exchange
         Prospectuses, and shall prepare and file with the SEC the Exchange
         Registration Statements as promptly as practicable. Arch and PageNet
         each shall use its reasonable best efforts to have each of the Exchange
         Registration Statements declared effective under the Securities Act as
         promptly as practicable and on the same day as the S-4 Registration
         Statement, and promptly thereafter mail the Exchange Prospectuses to
         the noteholders of Arch and PageNet. Each party shall notify the other
         of the receipt of the comments of the SEC and of any requests by the
         SEC for amendments or supplements to the Exchange Prospectuses or the
         Exchange Registration Statements or for additional information and
         shall promptly supply one another with copies of all correspondence
         between any of them (or their Representatives) and the SEC (or its
         staff) with respect thereto. If, at any time prior to the expiration
         date of the Exchange Offers, any event shall occur relating to or
         affecting Arch, PageNet, or their respective officers or directors,
         which event should be described in an amendment or supplement to the
         Exchange Prospectuses or the Exchange Registration Statements, the
         parties shall promptly inform one another and shall cooperate in
         promptly preparing, filing and clearing with the SEC and, if required
         by applicable securities laws,




                                       43


<PAGE>   52
         mailing to Arch' or PageNet's noteholders, as the case may be, such
         amendment or supplement.

                  (g)      Provided the conditions to the Exchange Offers
         referred to in Section 6.18(b) above have been satisfied or waived and
         Arch or PageNet, as the case may be, has accepted for exchange Notes
         properly tendered and not withdrawn, Notes that are not tendered into
         or accepted in the Exchange Offers will remain outstanding as
         obligations of Arch or the Surviving Corporation, as the case may be,
         after consummation of the Merger and Arch or the Surviving Corporation,
         as the case may be, alone shall be obligated to comply with the terms
         thereof, except as may otherwise be provided in the Prepackaged Plan or
         the Final Confirmation Order (as defined in Section 6.19) if the
         Bankruptcy Case (as defined in Section 6.19) is commenced. Such Notes
         shall be modified only to the extent provided in the Indenture
         Amendments and the Note Consents.

                  (h)      The Exchange Offers will expire at 12:00 midnight,
         New York City time, on the twentieth business day after such
         commencement, or, consistent with this Agreement and the provisions of
         Section 6.19, at such later time and date as PageNet and Arch shall
         select consistent with applicable law and regulations (the "EXCHANGE
         OFFERS EXPIRATION DATE").

                  (i)      The Arch Common Stock or PageNet Shares and
         Distributed Interests, as the case may be, to be issued in exchange for
         the Notes tendered and accepted in the Exchange Offers will be so
         issued only after timely receipt by the exchange agent selected jointly
         by Arch and PageNet (the "NOTES EXCHANGE AGENT") of: (i) certificates
         for all physically delivered Notes in proper form for transfer, or
         timely confirmation of book-entry transfer of such Notes for such
         purposes; (ii) a properly completed and duly executed letter of
         transmittal in the form provided on behalf of Arch or the Surviving
         Corporation, as the case may be, for such purpose; (iii) a duly
         executed form of Note Consent and Note Waiver; and (iv) any other
         documents required by the letter of transmittal.

                  (j)      For purposes of the Exchange Offers, Arch or PageNet,
         as the case may be, shall be deemed to have accepted for exchange the
         tendered Notes as, if and when Arch or PageNet, as the case may be,
         gives oral or written notice to the Notes Exchange Agent of such
         party's acceptance of such Notes for exchange. Each of Arch and PageNet
         agree to simultaneously accept for exchange the Notes pursuant to their
         respective Exchange Offers. The Notes Exchange Agent will act as agent
         for the tendering holders for the purpose of receiving the Notes and
         transmitting the Arch Common Stock, PageNet Shares or Distributed
         Interests, as the case may be, in exchange therefor.

                  (k)      Arch and PageNet shall jointly establish such
         additional procedures and requirements with respect to the conduct of
         the Exchange Offers and shall cause the same




                                       44


<PAGE>   53
         to be communicated to holders of the Notes in such manner as they shall
         determine to be necessary or appropriate, including procedures and
         requirements as may be necessary to obtain confirmation of the
         Prepackaged Plan if the Bankruptcy Case is commenced. All questions
         concerning the timeliness, validity, form, eligibility, and acceptance
         for exchange or withdrawal of any tender of the Notes pursuant to any
         of the procedures described herein or any additional procedures
         established by the parties shall be determined jointly by the parties,
         whose determinations shall be final and binding. Arch and PageNet, as
         the case may be, also reserve in connection with their respective
         Exchange Offers, the absolute right to: (i) waive any defect or
         irregularity in any tender with respect to any particular Note or any
         particular holder; (ii) permit a defect or irregularity to be corrected
         within such time as it may determine; or (iii) reject the purported
         tender of any Note and interest coupons appertaining thereto. Tenders
         shall not be deemed to have been received or accepted until all defects
         and irregularities have been cured or waived within such time as Arch
         or PageNet, as the case may be, may determine in its sole discretion.
         None of Arch, PageNet or the Notes Exchange Agent or any other person
         shall be under any duty to give notification of any defects or
         irregularities relating to tenders or incur any liability for failure
         to give such notification.

                  (l)      Each of PageNet and Arch shall accept the Notes
         tendered in their respective Exchange Offer as of immediately prior to
         the Effective Time.

                  (m)      Promptly upon receipt of the consents of the holders
         of at least a majority of the outstanding principal amount of a series
         of Notes, Arch or PageNet, as the case may be, shall execute the
         applicable supplemental indenture to be effective as of the Effective
         Time.

         6.19.    BANKRUPTCY PROVISIONS. As used in this Agreement, the term:

         "BANKRUPTCY CASE" shall mean the bankruptcy case filed or stipulated to
         by PageNet and its Subsidiaries under Chapter 11 of the Bankruptcy Code
         pursuant to the terms hereof;

         "BANKRUPTCY CODE" shall mean Title 11 of the United States Code, 11
         U.S.C.ss.101 et seq., as now in effect or hereafter amended;

         "BANKRUPTCY COURT" shall mean the court in which the Bankruptcy Case
         may be filed or otherwise administered, including any court to which
         the Bankruptcy Case may be transferred at any time under applicable
         law. PageNet and Arch hereby agree that the U.S. Bankruptcy Court for
         the District of Delaware is the appropriate venue for the Bankruptcy
         Case and that if the Bankruptcy Case is filed by PageNet it will be
         filed in the District of Delaware;




                                       45


<PAGE>   54


         "EXIT FINANCING" shall mean the senior secured debt financing referred
         to in Section 6.17 hereof;

         "FINAL CONFIRMATION ORDER" shall mean an order of the Bankruptcy Court
         confirming the Prepackaged Plan in form and substance reasonably
         acceptable to PageNet and Arch, which has not been amended, modified
         and added to without the express consent of PageNet and Arch and as to
         which order as of the Effective Time there is no stay or injunction;

         "INITIAL DETERMINATION DATE" shall mean the date which is 60 days after
         the date upon which the S-4 Registration Statement and the Exchange
         Registration Statements are declared effective by the SEC;

         "INTERIM FINANCING" shall mean debt financing in an amount and on terms
         reasonably acceptable to Arch and appropriate to permit PageNet to
         continue its business and operations in the ordinary course following
         the filing of the Bankruptcy Case;

          "PREPACKAGED PLAN" shall mean the "prepackaged" plan of reorganization
         for PageNet and its Subsidiaries that (1) is prepared by PageNet and
         its Subsidiaries in accordance with, and intended by PageNet and its
         Subsidiaries to be confirmed under, the provisions of Chapter 11 of the
         Bankruptcy Code (including the confirmation requirements set forth in
         Section 1129 thereof), (2) consists of terms, conditions and provisions
         that are mutually acceptable to Arch and PageNet (it being understood
         and agreed by PageNet and Arch that neither party will unreasonably
         withhold its consent to proposed amendments to non-material provisions
         of the Prepackaged Plan) and are not inconsistent with the terms,
         conditions and provisions of this Agreement, (3) is included in the SEC
         disclosure materials sent to holders of the PageNet Notes in connection
         with the Exchange Offers pursuant to Sections 6.18(a) and (e) of this
         Agreement and (4) which contains terms intended to implement this
         Agreement and other terms which are not inconsistent with this
         Agreement, together with any and all changes, amendments or
         modifications to, or restatements of, such prepackaged plan which with
         respect to material provisions have been agreed to by Arch and PageNet,
         without regard to whether such changes, amendments, modifications and
         restatements are made to the Prepackaged Plan before or after the
         commencement of the Bankruptcy Case;

          "PAGENET CONDITIONS TO THE PREPACKAGED PLAN" shall mean (i) the
         Requisite Bankruptcy Vote of the PageNet Notes, (ii) the Requisite
         Bankruptcy Vote of the PageNet Secured Creditors and (iii) the Interim
         Financing;

          "REQUISITE BANKRUPTCY VOTE OF THE PAGENET NOTES" shall mean a vote in
         favor of the Prepackaged Plan by the holders of at least two-thirds of
         the outstanding principal amount




                                       46


<PAGE>   55
         of the PageNet Notes that are actually voted, and a vote in favor of
         the Prepackaged Plan by a majority in number of the holders of the
         PageNet Notes that actually vote;

         "REQUISITE BANKRUPTCY VOTE OF THE PAGENET SECURED CREDITORS" shall mean
         a vote in favor of the Prepackaged Plan by the holders of at least
         two-thirds of the outstanding indebtedness owed under the PageNet
         senior credit facilities that are actually voted, and a vote in favor
         of the Prepackaged Plan by a majority in number of the holders of the
         indebtedness under the PageNet senior credit facilities that actually
         vote;

          "REQUISITE CONDITIONS TO THE PREPACKAGED PLAN" shall mean (i) the
         PageNet Conditions to the Prepackaged Plan, (ii) the Arch Conditions to
         the Prepackaged Plan, and (iii) that either the Exit Financing has been
         obtained or upon entry of the Final Order will be obtained;

          "ARCH CONDITIONS TO THE PREPACKAGED PLAN" shall mean the (i) Arch
         Minimum Condition and (ii) Arch Stockholders Approval.

                  (a)      Notwithstanding any other provision of this Agreement
         to the contrary, in the event that:

                           (i)      prior to or at the Initial Determination
         Date the PageNet Minimum Condition and the Arch Minimum Condition are
         satisfied, and the PageNet Stockholders Approval and the Arch
         Stockholders Approvals are obtained, then the Exchange Offers shall be
         consummated pursuant to the terms hereof, the Bankruptcy Case shall not
         be filed and the Prepackaged Plan shall be abandoned, unless PageNet
         and Arch agree that the filing of the Bankruptcy Case and the
         confirmation of the Prepackaged Plan are in the best interests of
         PageNet and Arch, notwithstanding satisfaction of the PageNet Minimum
         Condition and the Arch Minimum Condition;

                           (ii)     at the Initial Determination Date, the
         PageNet Minimum Condition is not satisfied or the PageNet Stockholders
         Approval is not obtained but the Requisite Conditions to the
         Prepackaged Plan are satisfied, then either (x) (1) PageNet shall file
         the Bankruptcy Case (in the U.S. Bankruptcy Court for the District of
         Delaware or such other bankruptcy court as PageNet and Arch mutually
         agree) and seek confirmation of the Prepackaged Plan by the Bankruptcy
         Court, and (2) Arch shall be bound by all of the terms hereof, and
         shall consummate the Merger through the Prepackaged Plan if such plan
         is confirmed by the Bankruptcy Court by a Final Confirmation Order
         within 120 days of the commencement of the Bankruptcy Case, or such
         later date as is mutually agreed to in writing by Arch and PageNet, and
         if the other conditions to the Merger set forth in Article VII hereof
         (other than Section 7.1(a)(2) and 7.1(g)(ii), which shall have been
         satisfied by entry of the Final Confirmation Order) are satisfied after
         entry of the Final Confirmation Order but prior to the Termination
         Date, as such date may be extended in accordance with




                                       47


<PAGE>   56
         Section 8.2, or (y) PageNet shall terminate this Agreement and
         simultaneously pay to Arch the Arch Termination Fee pursuant to Section
         8.5(c) hereof. In the event the Bankruptcy Case is commenced, Arch
         shall:

                  (w)      support assumption of this Agreement by PageNet as a
                  debtor-in- possession pursuant to 11 U.S.C. ss. 365;

                  (x)      enter into a new agreement identical to the terms of
                  this Agreement with PageNet as a debtor-in-possession after
                  commencement of the Bankruptcy Case, in the event PageNet and
                  Arch agree (upon the advice of counsel) or the Bankruptcy
                  Court determines that applicable law prohibits assumption of
                  this Agreement by PageNet as a debtor-in-possession pursuant
                  to 11 U.S.C. ss. 365(c)(2);

                  (y)      support confirmation of the Prepackaged Plan and all
                  actions and pleadings reasonably undertaken by PageNet in the
                  Bankruptcy Case to achieve confirmation thereof; and

                  (z)      oppose any effort by any party to (1) dismiss the
                  Bankruptcy Case or convert the Bankruptcy Case to a case under
                  chapter 7 of the Bankruptcy Code, or (2) defeat confirmation
                  of the Prepackaged Plan;

                           (iii)    at the Initial Determination Date, the
         PageNet Minimum Condition is not satisfied or the PageNet Stockholders
         Approval is not obtained and the Requisite Conditions to the
         Prepackaged Plan are not satisfied, then the Initial Determination Date
         shall be extended to the earlier of (x) the date upon which the PageNet
         Minimum Condition and the Arch Minimum Condition are satisfied, and the
         PageNet Stockholders Approval and the Arch Stockholders Approval are
         obtained, (y) the date upon which the Requisite Conditions to the
         Prepackaged Plan are satisfied and (z) June 30, 2000 (the "EXTENDED
         DETERMINATION DATE"). If the PageNet Minimum Condition and the Arch
         Minimum Condition are satisfied and the PageNet Stockholders Approval
         and the Arch Stockholders Approval are obtained prior to June 30, 2000,
         then the provisions of Section 6.19(a)(i) of this Agreement shall
         apply. If the Requisite Conditions to the Prepackaged Plan are
         satisfied prior to June 30, 2000, then the provisions of Section
         6.19(a)(ii) of this Agreement shall apply;

                           (iv)     at any time after the date of this
         Agreement, the Board of Directors of PageNet determines that the filing
         of the Bankruptcy Case is in the best interests of PageNet, then (1)
         PageNet may file the Bankruptcy Case and shall seek, to the extent not
         already satisfied, to satisfy the PageNet Conditions to the Prepackaged
         Plan and otherwise seek confirmation of the Prepackaged Plan by the
         Bankruptcy Court, and (2) Arch shall (x)




                                       48


<PAGE>   57
         seek, to the extent not already satisfied, to satisfy the Arch
         Conditions to the Prepackaged Plan and (y) be bound by all of the terms
         hereof, and shall consummate the Merger through the Prepackaged Plan if
         such plan is confirmed by the Bankruptcy Court by a Final Confirmation
         Order (provided that such Final Confirmation Order shall be entered by
         no later than December 31, 2000, or such later date as is mutually
         agreed to by Arch and PageNet) and if the other conditions to the
         Merger set forth in Article VII hereof (other than Section 7.1(a)(2)
         and 7.1(g)(ii), which shall have been satisfied by entry of the Final
         Confirmation Order) are satisfied after entry of the Final Confirmation
         Order but prior to the Termination Date, as such date may be extended
         in accordance with Section 8.2;

                           (v)      an Involuntary Insolvency Event occurs prior
         to a voluntary commencement of the Bankruptcy Case pursuant to Sections
         6.19(a)(ii), (iii) or (iv), (1) (A) if the date of the Insolvency Event
         (the "INVOLUNTARY INSOLVENCY EVENT DATE") is prior to the Initial
         Determination Date, PageNet shall have up to 120 days after such
         Involuntary Insolvency Event Date to obtain from the appropriate court
         an order which dismisses such Involuntary Insolvency Event (including,
         with respect to an involuntary petition filed in any bankruptcy court,
         an order which holds or requires that the court abstain from
         adjudicating the petition pursuant to 11 U.S.C. ss. 305) and which
         order is not subject to a stay or injunction and is not subject to an
         appeal and all periods for taking an appeal shall have expired (the
         "DISMISSAL ORDER"), so that the Exchange Offers may be completed, and
         this Agreement shall remain in full force and effect and Arch shall be
         bound by all of the terms hereof or (B) if an Involuntary Insolvency
         Event occurs after the Initial Determination Date, and as of the
         Involuntary Insolvency Event Date the PageNet Minimum Condition and the
         Arch Minimum Condition have been satisfied and the PageNet Stockholders
         Approval and Arch Stockholders Approval have been obtained, then (x)
         PageNet shall have up to 120 days after such Involuntary Insolvency
         Event Date to obtain entry of the Dismissal Order, and (y) this
         Agreement shall remain in full force and effect and Arch shall
         consummate the Merger (outside of bankruptcy, unless PageNet and Arch
         mutually consent to file the Bankruptcy Case as contemplated by Section
         6.19(a)(i) hereof) pursuant to the terms hereof provided that such
         Dismissal Order has been obtained before the expiration of such 120-day
         period, (2) if on the Involuntary Insolvency Event Date the PageNet
         Minimum Condition has not been satisfied or PageNet Stockholders
         Approval has not been obtained but the Requisite Conditions to the
         Prepackaged Plan have been satisfied, then PageNet shall stipulate to
         bankruptcy relief under Chapter 11 of the Bankruptcy Code and the
         provisions of Section 6.19(a)(ii)(x)(1) of this Agreement shall apply
         (including the provisions therein requiring Arch to be obligated to
         consummate the Merger pursuant to the Prepackaged Plan); and (3) if on
         the Involuntary Insolvency Event Date the PageNet Minimum Condition has
         not been satisfied or PageNet Stockholders Approval or Arch
         Stockholders Approval has not been obtained and the Requisite
         Conditions to the Prepackaged Bankruptcy have not been obtained, then
         PageNet may (but shall not be obligated to) stipulate to bankruptcy
         relief under Chapter 11 of the Bankruptcy Code and




                                       49


<PAGE>   58
         the provisions of Section 6.19(a)(iv) of this Agreement shall apply
         (including the provisions therein requiring Arch to be obligated for a
         period of time to consummate the Merger pursuant to the Prepackaged
         Plan). For purposes hereof, an "INVOLUNTARY INSOLVENCY EVENT" shall
         mean any filing of an involuntary bankruptcy petition against PageNet
         or any of its Subsidiaries by any party, or the appointment under other
         applicable state or federal law of a liquidator or a trustee for
         PageNet or any of its Subsidiaries.

                  (b)      As soon as practicable after entering into this
         Agreement, PageNet and Arch shall jointly prepare the Prepackaged Plan
         in form and substance satisfactory to PageNet and Arch. PageNet shall
         include the Prepackaged Plan and related solicitation materials
         (including a ballot) in the PageNet Exchange Prospectus, the
         solicitation materials sent to the PageNet Secured Creditors, and (to
         the extent PageNet and Arch deem necessary) in any materials sent to
         the holders of PageNet Shares. PageNet and Arch shall cooperate to
         ensure that the Exchange Offers, including the disclosures to holders
         of PageNet Notes made in connection therewith, and the solicitation of
         PageNet Secured Creditors comply with the disclosure requirements of
         the Bankruptcy Code and applicable law. The Prepackaged Plan may not be
         amended, modified or added to in any material respect without the
         written consent of PageNet and Arch.

                  (c)      Notwithstanding any other provision hereof to the
         contrary, (i) the filing of the Bankruptcy Case, the operation of
         PageNet's business in accordance with the Bankruptcy Code or the
         pendency of the Bankruptcy Case, or (ii) the occurrence of an
         Involuntary Insolvency Event with respect to PageNet shall not be
         considered in and of itself a Material Adverse Effect for purposes of
         this Agreement.

                  (d)      On the same day that the Bankruptcy Case is filed, an
         order for relief is consented to under Section 6.19(a)(v) of this
         Agreement or an order for relief is entered, as applicable, PageNet
         shall file a motion (the "INITIAL MERGER MOTION") for expedited
         determination of approval of Section 6.2 hereof concerning Acquisition
         Proposals (the "EXCLUSIVITY PROVISION"), Section 8.5(c) concerning the
         Arch Termination Fee and Section 8.5(b) concerning the PageNet
         Termination Fee in form and substance acceptable to Arch, PageNet shall
         use its best efforts to obtain an order approving the Initial Merger
         Motion (the "INITIAL MERGER ORDER") within 15 days of the commencement
         of the Bankruptcy Case, but in no event not later than 30 days after
         the commencement thereof, which order shall be in form and substance
         acceptable to Arch.

                  (e)      PageNet shall promptly provide to Arch with drafts of
         all documents, motions, orders, filings or pleadings that PageNet
         proposes to file with the Bankruptcy Court and will provide Arch with
         reasonable opportunity prior to the filing thereof to review such
         filings to the extent reasonably practicable. PageNet shall consult and
         cooperate with Arch with respect to all such filings.




                                       50


<PAGE>   59
                  (f)      PageNet and Arch shall use their best efforts to
         cause the transactions contemplated by this Agreement and the
         Prepackaged Plan to be consummated in accordance with the terms hereof
         and thereof, and without limiting the generality of the foregoing shall
         use their best efforts to obtain all necessary approvals, waivers,
         consents, permits, licenses, registrations and other authorizations
         required in connection with this Agreement and the Prepackaged Plan and
         the transactions contemplated hereby and thereby, including without
         limitation, entry of the Final Confirmation Order.

                  (g)      PageNet shall cause its Subsidiaries to take all
         actions and to execute all agreements and documents which are necessary
         or useful in the preparation of and commencement of the Bankruptcy
         Case, the preparation, filing and prosecution of the Prepackaged Plan
         and the entry of the Final Confirmation Order.

                  (h)      Concurrent with the commencement of the Exchange
         Offers, PageNet shall send solicitation and disclosure materials to its
         creditors as would bind such creditors to the Prepackaged Plan under
         the provisions of the Bankruptcy Code. PageNet shall make such
         solicitations of its creditors (in addition to solicitations of holders
         of the PageNet Notes) as PageNet and Arch determine is necessary to
         facilitate and expedite the confirmation of the Prepackaged Plan in the
         event of any potential Bankruptcy Case.

                  (i)      If the Bankruptcy Case is commenced pursuant to
         Section 6.19(a)(iv) or (v), then Arch shall not be subject to the
         restrictions set forth in Section 6.2 or the restrictions on the
         conduct of its business set forth in Section 6.1(b)(viii) with respect
         to merger or acquisition transactions or the other restrictions set
         forth in Section 6.1(b), to the extent such restrictions would impede
         or prohibit Arch from entering into another merger or acquisition
         transaction; PROVIDED, HOWEVER, that Arch may not enter into another
         merger or acquisition transaction that would prevent, materially impair
         or materially delay its ability to consummate the Merger or the other
         transactions contemplated hereby; PROVIDED, FURTHER, that if Arch
         enters into a merger or acquisition transaction following the
         commencement of the Bankruptcy Case pursuant to Section 6.19(a)(iv) or
         (v) and as a result of such event PageNet is required to amend its
         disclosure statement and resolicit the votes of its creditors, then the
         time within which the Final Confirmation Order must be obtained shall
         be extended for an additional 90 days.

         6.20.    RIGHTS AGREEMENT. At or prior to the Effective Time, the Arch
Board of Directors shall take all action required to render inapplicable the
Arch Rights Agreement to the Merger and the transactions contemplated by this
Agreement. At or prior to the Effective Time, the Arch Board of Directors shall
take all action required by Section 5.1(j)(ii) of this Agreement and the PageNet
Board of Directors shall take all action required by Section 5.1(j)(i) of this
Agreement.

         6.21.    PREFERRED STOCK.





                                       51


<PAGE>   60
                  (a)      Arch shall use its reasonable best efforts to obtain,
         as soon as practicable after the date of this Agreement, the written
         agreement of each holder of Arch Series C Preferred Shares (such
         written agreement referred to herein as the "SERIES C CONSENT
         AGREEMENT"), pursuant to which: (i) such holder agrees to vote in favor
         of an amendment to the Arch certificate of incorporation pursuant to
         which each Series C Convertible Preferred Share shall be converted at
         the Effective Time into 8.416568 shares (the "SERIES C EXCHANGE RATIO")
         of Arch Common Stock, subject to adjustment as provided in Section 4.4
         (the "SERIES C CONSIDERATION"), (ii) waive any and all rights such
         holder may have under section 7A of the Certificate of Designations,
         Preferences and Relative, Participating, Optional or other Special
         Rights of Series C Convertible Stock of Arch; and (iii) Arch agrees to
         register for sale by such holder and certain transferees, the shares of
         Arch Common Stock received by such holder, unless such shares would be
         freely tradeable under applicable securities laws. When executed and
         delivered by Arch, the Series C Consent Agreement will be a valid and
         binding agreement of Arch, enforceable against Arch in accordance with
         its terms, subject to the Bankruptcy and Equity Exception.

                  (b)      The exchange of certificates formerly representing
         Arch Series C Preferred Shares shall be effected by the Exchange Agent
         (as defined in Section 4.2) pursuant to the provisions set forth in
         Section 4.2 of this Agreement. The term "Certificate" shall include
         certificates formerly representing Arch Series C Preferred Shares.

         6.22.    SPINOFF. Prior to the Closing, the Board of Directors of
PageNet will declare a dividend (the "SPINOFF DIVIDEND"), payable to those
holders of PageNet Shares who hold PageNet Shares immediately prior to the
acceptance of PageNet Notes in the PageNet Exchange Offer (the "SPINOFF RECORD
DATE"), of interests (the "DISTRIBUTED INTERESTS") representing the portion of
such equity ownership in Silverlake Communications, Inc. (also doing business as
VAST Solutions, Inc. and VAST Solutions) (the "DISTRIBUTED SUBSIDIARY") equal to
(x) subject to Section 6.1(d), 11.6% of the total equity ownership of the
Distributed Subsidiary divided by (y) the number of PageNet Shares issued and
outstanding at the Spinoff Record Date (the issuance of the Spinoff Dividend
shall be referred to herein as the "SPINOFF"). Payment of the Spinoff Dividend
declared by the Board of Directors of PageNet shall be conditioned upon the
occurrence of (i) either (A) the satisfaction of the PageNet Minimum Condition
and the acceptance of the PageNet Notes or (B) the filing of the Final
Confirmation Order and (ii) the consummation of the Merger. PageNet and the
Distributed Subsidiary shall take such action reasonably necessary (including
filings with and no- action requests of the SEC and communications with
stockholders) to effectuate the Spinoff. Upon satisfaction of the conditions to
the Spinoff Dividend, Arch shall use its reasonable best efforts to consummate,
or cause to be consummated the Spinoff as promptly as practicable after the
Effective Time.





                                       52

<PAGE>   61
                                  ARTICLE VII.

                                   CONDITIONS

         7.1.     CONDITIONS TO EACH PARTY'S OBLIGATION TO EFFECT THE MERGER.
The respective obligation of each party to effect the Merger is subject to the
satisfaction or waiver, if applicable, at or prior to the Effective Time of each
of the following conditions:

                  (a)      STOCKHOLDER APPROVAL. The Arch Stockholders Approval
         shall have been obtained, and PageNet shall have obtained either (1)
         the PageNet Stockholders Approval or (2) entry of the Final
         Confirmation Order confirming the Prepackaged Plan, such that this
         Agreement and the transactions contemplated hereby can be accomplished
         without the approval of the holders of the PageNet Shares.

                  (b)      NASDAQ LISTING. The shares of Arch Common Stock
         issuable pursuant to this Agreement shall have been approved for
         listing (either before or after the execution of this Agreement) on the
         NASDAQ.

                  (c)      GOVERNMENTAL REGULATIONS. The waiting period
         applicable to the consummation of the Merger under the HSR Act shall
         have expired or been terminated, and all other consents, permits,
         licenses, and approvals for the Merger and the other transactions
         contemplated by this Agreement required by the Governmental
         Regulations, as well as all other material PageNet Required Consents
         and Arch Required Consents, shall have been obtained and shall have
         become Final Orders. For purposes of this agreement, a "FINAL ORDER"
         shall mean an action taken or order issued by the applicable
         Governmental Entity as to which (i) no request for stay by such
         Governmental Entity of the action or order is pending, no such stay is
         in effect, and, if any deadline for filing any such request is
         designated by statute or regulation, it is passed; (ii) no petition for
         rehearing or reconsideration of the action or order is pending before
         the Governmental Entity and the time for filing any such petition is
         passed; (iii) the Governmental Entity does not have the action or order
         under reconsideration on its own motion and the time for such
         reconsideration has passed; (iv) the action or order is not then under
         active judicial review, there is no notice of appeal or other
         application for judicial review pending, and the deadline for filing
         such notice of appeal or other application for judicial review has
         passed; and (v) with respect to an action taken or order issued by the
         Governmental Entity granting consent to the Merger, such consent shall
         be without material adverse conditions, other than conditions that have
         been agreed to by PageNet and Arch or that are routine conditions with
         respect to transfer of this nature.

                  (d)      LAWS AND ORDERS. No Governmental Entity of competent
         jurisdiction shall have enacted, issued, promulgated, enforced or
         entered any Law (whether temporary,




                                       53


<PAGE>   62
         preliminary or permanent) that is in effect and restrains, enjoins or
         otherwise prohibits consummation of the Merger, the Exchange Offers,
         the Spinoff or the other transactions contemplated by this Agreement
         (collectively, an "ORDER"), and no Governmental Entity shall have
         instituted any proceeding or threatened to institute any proceeding
         seeking any such Order.

                  (e)      S-4. The S-4 Registration Statement and the Exchange
         Registration Statements shall have become effective under the
         Securities Act. No stop order suspending the effectiveness of the S-4
         Registration Statement or the Exchange Registration Statements shall
         have been issued, and no proceedings for that purpose shall have been
         initiated or be threatened by the SEC.

                  (f)      SENIOR CREDIT FACILITIES. Arch and its subsidiaries,
         including PageNet after giving effect to the Merger, will have senior
         credit facilities in an amount not less than $1.5 billion.

                  (g)      EXCHANGE OFFERS/BANKRUPTCY. Either (i) the PageNet
         Minimum Condition and the Arch Minimum Condition shall have been
         satisfied or (ii) if the PageNet Minimum Condition has not been
         satisfied, the Final Confirmation Order shall have been entered
         confirming the Prepackaged Plan and the Arch Minimum Condition shall
         have been obtained and all conditions to the Effective Time occurring
         under the Prepackaged Plan shall have been satisfied.

                  (h)      BLUE SKY APPROVALS. Arch shall have received all
         state securities and "blue sky" permits and approvals necessary to
         consummate the transactions contemplated by this Agreement.

                  (i)      EXPECTED OUT-OF-POCKET INCOME TAX LIABILITY. PageNet,
         Arch, Merger Sub and their respective subsidiaries shall not be
         reasonably expected to incur out-of-pocket income tax liability in
         their respective taxable periods which include the Effective Time
         resulting directly from the consummation of the Merger, the Exchange
         Offers and the Spinoff in excess of $25 million in the aggregate. In
         making this determination the following shall be taken into account:
         (1) the amount of cancellation of indebtedness income, if any,
         includible in gross income, (2) gain, if any, incurred as a result of
         the distribution or transfer of appreciated assets, and (3) the amount
         of losses, credits or deductions, including both available net
         operating loss or credit carryforwards and losses, deductions or
         credits expected to be generated in the taxable periods which include
         the Effective Time, but excluding any expected carrybacks from
         subsequent taxable periods.




                                       54


<PAGE>   63
         7.2.     CONDITIONS TO OBLIGATIONS OF ARCH AND MERGER SUB. The
obligations of Arch and Merger Sub to effect the Merger are also subject to the
satisfaction or waiver by Arch at or prior to the Effective Time of the
following conditions:

                  (a)      REPRESENTATIONS AND WARRANTIES. The representations
         and warranties of PageNet set forth in this Agreement (other than those
         representations and warranties which would be breached as a result of
         the filing or conduct of the Bankruptcy Case or the occurrence of an
         Involuntary Insolvency Event with respect to PageNet): (i) to the
         extent qualified by materiality, shall be true and correct; and (ii) to
         the extent not qualified by materiality, shall be true and correct
         (except that this clause (ii) shall be deemed satisfied so long as any
         failures of such representations and warranties to be true and correct,
         taken together, would not reasonably be expected to have a Material
         Adverse Effect on PageNet and would not reasonably be expected to have
         a material adverse effect on the expected benefits of the Merger to
         Arch), in the case of each of clauses (i) and (ii), as of the date of
         this Agreement and (except to the extent such representations and
         warranties speak as of an earlier date) as of the Closing Date as
         though made on and as of the Closing Date, and Arch shall have received
         a certificate signed on behalf of PageNet by an executive officer of
         PageNet to such effect.

                  (b)      PERFORMANCE OF OBLIGATIONS OF PAGENET. PageNet shall
         have performed in all material respects all of its covenants,
         agreements and obligations set forth in this Agreement at or prior to
         the Closing Date, and Arch shall have received a certificate signed on
         behalf of PageNet by an executive officer of PageNet to such effect.

                  (c)      CONSENTS UNDER AGREEMENTS. PageNet shall have
         obtained the consent or approval of each Person whose consent or
         approval shall be required in order to consummate the transactions
         contemplated by this Agreement under any Contract to which PageNet or
         any of its Subsidiaries is a party (other than consents or waivers
         relating to the Bankruptcy Case or the occurrence of an Involuntary
         Insolvency Event), except those for which the failure to obtain such
         consent or approval, individually or in the aggregate, is not
         reasonably likely to have, a Material Adverse Effect on PageNet or a
         material adverse effect on the expected benefits of the Merger to Arch.

                  (d)      TAX OPINION. Arch shall have received the opinion of
         Hale and Dorr LLP, counsel to Arch, dated the Closing Date, to the
         effect that the Merger will be treated for federal income tax purposes
         as a reorganization within the meaning of Section 368(a) of the Code,
         and that each of Arch, Merger Sub and PageNet will be a party to that
         reorganization within the meaning of Section 368(b) of the Code. Such
         opinion shall be based on certain assumptions concerning the fair
         market value of stock and securities to be surrendered and issued in
         the Merger, the Exchange Offers and the Spinoff, which PageNet, Arch
         and, with respect to PageNet, Houlihan Lokey Howard & Zukin Financial




                                       55


<PAGE>   64

         Advisors, Inc., and, with respect to Arch, Bear, Stearns & Co. Inc.
         will certify as being reasonable. In addition, in rendering such
         opinions, counsel may rely upon representations and certificates given
         for this purpose by responsible officers of PageNet, Arch and Merger
         Sub.

                  (e)      CERTIFICATE. PageNet shall have delivered to Arch a
         certificate (without qualification as to knowledge or materiality or
         otherwise) to the effect that each of the conditions specified in
         Section 7.2 is satisfied in all respects, that the PageNet Stockholders
         Meeting has been convened (unless the Bankruptcy Case precedes the
         scheduled date of such meeting), and that the actions set forth in
         Section 6.5(a) of this Agreement have been adopted and approved in
         accordance with such section (except to the extent such approval is not
         required by reason of the entry of the Final Confirmation Order).

         7.3.     CONDITIONS TO OBLIGATION OF PAGENET. The obligation of PageNet
to effect the Merger is also subject to the satisfaction or waiver by PageNet at
or prior to the Effective Time of the following conditions:

                  (a)      REPRESENTATIONS AND WARRANTIES. The representations
         and warranties of Arch and Merger Sub set forth in this Agreement: (i)
         to the extent qualified by materiality, shall be true and correct; and
         (ii) to the extent not qualified by materiality, shall be true and
         correct (except that this clause (ii) shall be deemed satisfied so long
         as any failures of such representations and warranties to be true and
         correct, taken together, would not reasonably be expected to have a
         Material Adverse Effect and would not reasonably be expected to have a
         material adverse effect on the expected benefits of the Merger to
         PageNet), in the case of each of clauses (i) and (ii), as of the date
         of this Agreement and (except to the extent such representations and
         warranties speak as of an earlier date) as of the Closing Date as
         though made on and as of the Closing Date, and PageNet shall have
         received a certificate signed on behalf of Arch and Merger Sub by an
         executive officer of Arch to such effect.

                  (b)      PERFORMANCE OF OBLIGATIONS OF ARCH. Each of Arch and
         Merger Sub shall have performed in all material respects all of its
         covenants, agreements and obligations set forth in this Agreement at or
         prior to the Closing Date, and PageNet shall have received a
         certificate signed on behalf of Arch and Merger Sub by an executive
         officer of Arch to such effect.

                  (c)      CONSENTS UNDER AGREEMENTS. Arch shall have obtained
         the consent or approval of each Person whose consent or approval shall
         be required in order to consummate the transactions contemplated by
         this Agreement under any Contract to which Arch or any of its
         Subsidiaries is a party, except those for which the failure to obtain
         such consent or approval, individually or in the aggregate, is not
         reasonably likely to have, a




                                       56


<PAGE>   65
         Material Adverse Effect on Arch or a material adverse effect on the
         expected benefits of the Merger to PageNet.

                  (d)      TAX OPINION. PageNet shall have received the opinion
         of Mayer, Brown & Platt, counsel to PageNet, dated the Closing Date, to
         the effect that the Merger will be treated for federal income tax
         purposes as a reorganization within the meaning of Section 368(a) of
         the Code, and that each of Arch, Merger Sub and PageNet will be a party
         to that reorganization within the meaning of Section 368(b) of the
         Code. Such opinion shall be based on certain assumptions concerning the
         fair market value of stock and securities to be surrendered and issued
         in the Merger, the Exchange Offers and the Spinoff, which PageNet, Arch
         and, with respect to PageNet, Houlihan Lokey Howard & Zukin Financial
         Advisors, Inc., and, with respect to Arch, Bear, Stearns & Co. Inc.
         will certify as being reasonable. In addition, in rendering such
         opinions, counsel may rely upon representations and certificates given
         for this purpose by responsible officers of PageNet and Arch.

                  (e)      CERTIFICATE. Arch shall have delivered to PageNet a
         certificate (without qualification as to knowledge or materiality or
         otherwise) to the effect that each of the conditions specified in
         Section 7.3 (a)-(d) is satisfied in all respects, that the Arch
         Stockholders Meeting has been convened, and that the actions set forth
         in Section 6.5(b) have been adopted and approved in accordance with
         such section.

                  (f)      SERIES C CONSENT AGREEMENT. The Series C Consent
         Agreement will be in full force and effect, Arch shall not be in breach
         or default of the Series C Consent Agreement, and to the actual
         knowledge of the Knowledgeable Executives of Arch, there shall not
         exist a breach or default under the Series C Consent Agreement by any
         other party thereto.

                  (g)      SPINOFF. The Spinoff Dividend may be declared
         pursuant to Section 6.22 of this Agreement or the Final Confirmation
         Order shall have been entered confirming the Prepackaged Plan.

                                  ARTICLE VIII.

                                   TERMINATION

         8.1.     TERMINATION BY MUTUAL CONSENT. This Agreement may be
terminated and the Merger may be abandoned at any time prior to the Effective
Time, whether before or after the approval by stockholders of PageNet or Arch
referred to in Section 7.1(a), by mutual written consent of PageNet and Arch,
through action of their respective Boards of Directors.




                                       57


<PAGE>   66
         8.2.     TERMINATION BY EITHER ARCH OR PAGENET. This Agreement may be
terminated and the Merger may be abandoned at any time prior to the Effective
Time by action of the Board of Directors of either Arch or PageNet if: (i) the
Merger shall not have been consummated by June 30, 2000 if no Bankruptcy Case
has been filed by that date or 30 days following the date by which the Final
Confirmation Order must be entered under Section 6.19(a) (the "TERMINATION
DATE"); PROVIDED, HOWEVER, that either party shall have the option, in its sole
discretion, to extend the Termination Date for an additional period of time not
to exceed 90 days if the sole reason that the Merger has not been consummated by
such date is that the condition set forth in Section 7.1(c) has not been
satisfied due to the failure to obtain the necessary consents and approvals
under applicable Governmental Regulations and Arch or PageNet are still
attempting to obtain such necessary consents and approvals under applicable
Governmental Regulations or are contesting the refusal of the relevant
Government Entities to give such consents or approvals in court or through other
applicable proceedings; (ii) the PageNet Stockholders Meeting and the Arch
Stockholders Meeting shall have been held and completed, but the PageNet
Stockholders Approval or the Arch Stockholders Approval, to the extent required
by Section 7.1(a), shall not have occurred; or (iii) any Order permanently
restraining, enjoining or otherwise prohibiting consummation of the Merger shall
become final and non-appealable (whether before or after the PageNet
Stockholders Approval or the Arch Stockholders Approval); PROVIDED, FURTHER,
that the right to terminate this Agreement pursuant to clause (i) above shall
not be available to any party that has breached in any material respect its
obligations under this Agreement in any manner that shall have proximately
contributed to the failure of the Merger to be consummated.

         8.3.     TERMINATION BY PAGENET. This Agreement may be terminated and
the Merger may be abandoned at any time prior to the Effective Time, before or
after the PageNet Stockholder Approval referred to in Section 7.1(a), by action
of the Board of Directors of PageNet if:

                  (a)      the Board of Directors of Arch shall have withdrawn
         or adversely modified its approval or recommendation of this Agreement;

                  (b)      there has been a breach by Arch or Merger Sub of any
         representation, warranty, covenant or agreement contained in this
         Agreement which both: (i) would result in a failure of a condition set
         forth in Section 7.3(a) or 7.3(b); and (ii) cannot be or is not cured
         prior to the Termination Date;

                  (c)      PageNet has received a Superior Proposal, has
         otherwise complied with the requirements of Section 6.2, provides Arch
         with all of the material terms of Superior Proposal at least two
         business days prior to termination and simultaneously with such
         termination pays to Arch the Arch Termination Fee required by Section
         8.5(c); or




                                       58


<PAGE>   67
                  (d)      pursuant to Section 6.19(a)(ii), PageNet shall not
         file the Bankruptcy Case and seek confirmation of the Prepackaged Plan
         by the Bankruptcy Court and simultaneously pays to Arch the Arch
         Termination Fee.

         8.4.     TERMINATION BY ARCH. This Agreement may be terminated and the
Merger may be abandoned at any time prior to the Effective Time, before or after
the Arch Stockholder Approval referred to in Section 7.1(a), by action of the
Board of Directors of Arch if:

                  (a)      the Board of Directors of PageNet shall have
         withdrawn or adversely modified its approval or recommendation of this
         Agreement to do so;

                  (b)      there has been a breach by PageNet of any
         representation, warranty, covenant or agreement contained in this
         Agreement which both: (i) would result in a failure of a condition set
         forth in Section 7.2(a) or 7.2(b); and (ii) cannot be or is not cured
         prior to the Termination Date, other than a breach that results solely
         from the filing or conduct of the Bankruptcy Case consistent with the
         terms of this Agreement or solely from the occurrence of an Involuntary
         Insolvency Event with respect to PageNet;

                  (c)      the Initial Merger Order has not been entered within
         30 days of the commencement of the Bankruptcy Case;

                  (d)      the Final Confirmation Order is not entered within
         the time permitted by Section 6.19(a);

                  (e)      the Prepackaged Plan is amended, modified or added to
         in violation of Section 6.19(b); or

                  (f)      Arch has received a Superior Proposal, has otherwise
         complied with the requirements of Section 6.2, provides PageNet with
         all of the material terms of the Superior Proposal at least two
         business days prior to such termination and simultaneously pays to
         PageNet the PageNet Termination Fee required by Section 8.5(b).

         8.5.     EFFECT OF TERMINATION AND ABANDONMENT.

                  (a)      In the event of termination of this Agreement and the
         abandonment of the Merger pursuant to this Article VIII, this Agreement
         (other than as set forth in Section 9.1) shall become void and of no
         effect with no liability (other than as set forth in Section 8.5(b) or
         (c), or in the proviso at the end of this sentence) on the part of any
         party to this Agreement or of any of its directors, officers,
         employees, agents, legal or financial advisors or other
         representatives; PROVIDED, HOWEVER, no such termination shall relieve
         any party to this Agreement from any liability for damages resulting
         from any breach of this Agreement.




                                       59


<PAGE>   68

                  (b)      In the event that: (i) an Acquisition Proposal shall
         have been made to Arch or have been made directly to Arch' stockholders
         or noteholders generally or any Person shall have publicly announced an
         intention (whether or not conditional) to make an Acquisition Proposal
         and thereafter: (A) Arch' stockholders do not adopt this Agreement or
         the other transactions contemplated hereby at the Arch Stockholders
         Meeting or Arch' noteholders do not satisfy the Arch Minimum Condition
         with respect to the Arch Notes; (B) this Agreement is terminated by
         either Arch or PageNet pursuant to the terms of this Agreement and (C)
         Arch enters into an agreement with a third party with respect to an
         Acquisition Proposal within 12 months of the termination of this
         Agreement; (ii) this Agreement is terminated by PageNet pursuant to
         Section 8.3(a) or (b) provided that, with respect to Section 8.3(b), it
         is terminated solely with respect to a breach of (A) Section 6.2 or (B)
         Section 6.5 (but, only with respect to Arch' obligation in accordance
         with such Section to duly convene and complete the Arch Stockholders
         Meeting regarding the adoption of this Agreement and the matters set
         forth in Section 6.5(b) of this Agreement); or (iii) this Agreement is
         terminated by Arch pursuant to Section 8.4(f), then Arch and its
         Subsidiaries (jointly and severally) shall pay PageNet a fee equal to
         $40.0 million (the "PAGENET TERMINATION FEE"), which amount shall be in
         addition to any expenses to be paid pursuant to Section 6.12, payable
         by wire transfer of same day funds. A PageNet Termination Fee payable
         pursuant to Section 8.5(b)(i), or (ii) shall be paid no later than two
         days after the date of termination and a PageNet Termination Fee
         payable pursuant to Section 8.5(b)(iii) shall be paid simultaneously
         with (and such payment shall be a condition of) termination pursuant to
         Section 8.4(f). Arch acknowledges that the agreements contained in this
         Section 8.5(b) are an integral part of the transactions contemplated by
         this Agreement, and that, without these agreements, PageNet would not
         enter into this Agreement. Accordingly, if Arch fails to pay promptly
         the amount due pursuant to this Section 8.5(b), and, in order to obtain
         such payment, PageNet commences a suit which results in a judgment
         against Arch for the fee set forth in this paragraph (b), Arch shall
         pay to PageNet its costs and expenses (including attorneys' fees) in
         connection with such suit, together with interest on the amount of the
         fee at the prime rate of Citibank N.A. in effect on the date such
         payment was required to be made.

                  (c)      In the event that: (i) an Acquisition Proposal shall
         have been made to PageNet or have been made directly to PageNet's
         stockholders or noteholders generally or any Person shall have publicly
         announced an intention (whether or not conditional) to make an
         Acquisition Proposal and thereafter: (A) PageNet's stockholders do not
         adopt this Agreement or the other transactions contemplated hereby at
         the PageNet Stockholders Meeting or PageNet's noteholders do not
         satisfy the PageNet Minimum Condition with respect to the PageNet
         Notes, and the Bankruptcy Court fails to enter the Final Confirmation
         Order which would otherwise enable the transactions set forth in this
         Agreement to occur without approval by the holders of PageNet Shares;
         (B) this



                                       60


<PAGE>   69
         Agreement is terminated by either Arch or PageNet pursuant to the terms
         of this Agreement and (C) either (x) PageNet executes and delivers an
         agreement with respect to an Acquisition Proposal or (y) an Acquisition
         Proposal with respect to PageNet is consummated, in either case, within
         12 months of the date this Agreement is terminated; (ii) this Agreement
         is terminated by Arch pursuant to Section 8.4(a) or (b) provided that,
         with respect to Section 8.4(b), it is terminated solely with respect to
         a breach of (A) Section 6.2 or (B) Section 6.5 (but, only with respect
         to PageNet's obligation in accordance with such Section to duly convene
         and complete the PageNet Stockholders Meeting (unless the Bankruptcy
         Case has commenced or PageNet has stipulated to bankruptcy relief after
         the occurrence of an Involuntary Insolvency Event pursuant to Section
         6.19(a)(iv) hereof) regarding the adoption of this Agreement and the
         approval of the matters set forth in Section 6.5(a) of this Agreement);
         (iii) the Prepackaged Plan is withdrawn without the prior written
         consent of Arch, or PageNet files any other plan of reorganization or
         amends, modifies or adds to any material provision of the Prepackaged
         Plan in each case without the prior written consent of Arch; (iv) any
         other plan of reorganization filed by a person other than PageNet is
         confirmed by the Bankruptcy Court; (v) PageNet files a motion to sell
         or otherwise transfer all or a substantial portion of its assets as
         part of a sale pursuant to Section 363 of the Bankruptcy Code without
         the prior written consent of Arch; or (vi) this Agreement is terminated
         by PageNet pursuant to Section 8.3(c) or (d), then PageNet and its
         Subsidiaries (jointly and severally) shall pay Arch a fee equal to
         $40.0 million (the "ARCH TERMINATION FEE"), which amount shall be in
         addition to any expenses to be paid pursuant to Section 6.12, payable
         by wire transfer of same day funds. A Arch Termination Fee payable
         pursuant to Section 8.5(c)(i), (ii), (iii), (iv) or (v) shall be paid
         no later than two days after the date of termination and a Arch
         Termination Fee payable pursuant to Section 8.5(c)(vi) shall be paid
         simultaneously with (and such payment shall be a condition of)
         termination pursuant to Section 8.3(c) or (d). PageNet acknowledges
         that the agreements contained in this Section 8.5(c) are an integral
         part of the transactions contemplated by this Agreement, and that,
         without these agreements, Arch and Merger Sub would not enter into this
         Agreement. Accordingly, if PageNet fails to pay promptly the amount due
         pursuant to this Section 8.5(c) (and in any case in which the
         Bankruptcy Case has been commenced, the Initial Merger Order approves
         this provision), and, in order to obtain such payment, Arch commences a
         suit which results in a judgment against PageNet for the fee set forth
         in this paragraph (c), PageNet shall pay to Arch its costs and expenses
         (including attorneys' fees) in connection with such suit, together with
         interest on the amount of the fee at the prime rate of Citibank N.A. in
         effect on the date such payment was required to be made.




                                       61


<PAGE>   70
                                   ARTICLE IX.

                            MISCELLANEOUS AND GENERAL

         9.1.     SURVIVAL. Article II, Article III, Article IV and this Article
IX (other than Section 9.4 (Counterparts)), and the agreements of PageNet, Arch
and Merger Sub contained in Sections 6.8 (Affiliates), 6.11 (Benefits), 6.12
(Expenses) and 6.13 (Indemnification; Directors' and Officers' Insurance) shall
survive the consummation of the Merger. This Article IX (other than Section 9.2
(Modification or Amendment), Section 9.3 (Waiver of Conditions) and Section 9.13
(Assignment)) and the agreements of PageNet, Arch and Merger Sub contained in
Section 6.12 (Expenses), Section 6.14 (Takeover Statute), Section 6.15
(Confidentiality) and Section 8.5 (Effect of Termination and Abandonment) shall
survive the termination of this Agreement. All other representations,
warranties, covenants and agreements in this Agreement shall not survive the
consummation of the Merger or the termination of this Agreement.

         9.2.     MODIFICATION OR AMENDMENT. Subject to the provisions of the
applicable law, at any time prior to the Effective Time, the parties to this
Agreement may modify or amend this Agreement, by written agreement executed and
delivered by duly authorized officers of the respective parties.

         9.3.     WAIVER OF CONDITIONS.

                  (a)      Any provision of this Agreement may be waived prior
         to the Effective Time if, and only if, such waiver is in writing and
         signed by an authorized representative or the party against whom the
         waiver is to be effective.

                  (b)      No failure or delay by any party in exercising any
         right, power or privilege under this Agreement shall operate as a
         waiver thereof nor shall any single or partial exercise thereof
         preclude any other or further exercise thereof or the exercise of any
         other right, power or privilege. Except as otherwise provided in this
         Agreement, the rights and remedies herein provided shall be cumulative
         and not exclusive of any rights or remedies provided by Law.

         9.4.     COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each such counterpart being deemed to be an original instrument,
and all such counterparts shall together constitute the same agreement.




                                       62


<PAGE>   71


         9.5.     GOVERNING LAW AND VENUE; WAIVER OF JURY TRIAL.

                  (a)      This Agreement shall be deemed to be made in and in
         all respects shall be interpreted, construed, and governed by, and in
         accordance with, the substantive laws of the State of Delaware, without
         regard to the conflict of law principles thereof. The parties hereby
         irrevocably and unconditionally consent to submit to the exclusive
         jurisdiction of the courts of the State of Delaware and of the United
         States of America located in Wilmington, Delaware, including the U.S.
         Bankruptcy Court for the District of Delaware (the "DELAWARE COURTS"),
         for any litigation arising out of or relating to this Agreement or the
         Prepackaged Plan and the transactions contemplated by this Agreement
         (and agree not to commence any litigation relating thereto except in
         such Delaware Courts), waive any objection to the laying of venue of
         any such litigation in the Delaware Courts and agree not to plead or
         claim in any Delaware Court that such litigation brought therein has
         been brought in an inconvenient forum.

                  (b)      EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY
         CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE
         COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE, EACH SUCH PARTY HEREBY
         IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO
         A TRIAL BY JURY WITH RESPECT TO ANY LITIGATION DIRECTLY OR INDIRECTLY
         ARISING OUT OF, OR RELATING TO, THIS AGREEMENT, OR THE TRANSACTIONS
         CONTEMPLATED BY THIS AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES
         THAT: (i) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS
         REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT,
         IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER; (ii)
         EACH SUCH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS
         WAIVER; (iii) EACH PARTY MAKES THIS WAIVER VOLUNTARILY; AND (iv) EACH
         SUCH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG
         OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION
         9.5.

         9.6.     NOTICES. Notices, requests, instructions or other documents to
be given under this Agreement shall be in writing and shall be deemed given: (i)
when sent if sent by facsimile, provided that receipt of the fax is promptly
confirmed by telephone; (ii) when delivered, if delivered personally to the
intended recipient; and (iii) one business day later, if sent by overnight
delivery via a national courier service, and in each case, addressed to a party
at the following address for such party:




                                       63


<PAGE>   72
         If to Arch or Merger Sub:

                  Arch Communications Group, Inc.
                  1800 West Park Drive, Suite 250
                  Westborough, Massachusetts 01581
                  Attention:  Chief Executive Officer
                  Fax: (508) 870-6076

         with a copy to:

                  Hale and Dorr LLP
                  60 State Street
                  Boston, Massachusetts 02109
                  Attention: Jay E. Bothwick
                  Fax: (617) 526-5000

         and if to PageNet:

                  Paging Network, Inc.
                  14911 Quorum Drive
                  Dallas, Texas 75240
                  Attention:  Chief Executive Officer
                  Fax: (972) 801-8950

         and

                  Paging Network, Inc.
                  14911 Quorum Drive
                  Dallas, Texas 75240
                  Attention: Senior Vice President and General Counsel
                  Fax: (972) 801-8978

         with a copy to:

                  Mayer, Brown & Platt
                  190 South LaSalle Street
                  Chicago, Illinois 60603-3441
                  Attention: John R. Schmidt
                  Fax:  (312) 701-7711




                                       64


<PAGE>   73
or to such other persons or addresses as may be designated in writing by the
party to receive such notice as provided above.

         9.7.     ENTIRE AGREEMENT. This Agreement (including any exhibits and
annexes to this Agreement), Series C Consent Agreement, the Confidentiality
Agreement, the PageNet Disclosure Letter, and the Arch Disclosure Letter
constitute the entire agreement, and supersede all other prior agreements,
understandings, representations and warranties, both written and oral, among the
parties with respect to the subject matter of this Agreement. EACH PARTY TO THIS
AGREEMENT AGREES THAT, EXCEPT FOR THE REPRESENTATIONS AND WARRANTIES CONTAINED
IN THIS AGREEMENT, NEITHER ARCH AND MERGER SUB NOR PAGENET MAKES ANY
REPRESENTATIONS OR WARRANTIES, AND EACH HEREBY DISCLAIMS ANY OTHER
REPRESENTATIONS OR WARRANTIES MADE BY ITSELF OR ANY OF ITS OFFICERS, DIRECTORS,
EMPLOYEES, AGENTS, FINANCIAL AND LEGAL ADVISORS OR OTHER REPRESENTATIVES, WITH
RESPECT TO THE EXECUTION AND DELIVERY OF THIS AGREEMENT OR THE TRANSACTIONS
CONTEMPLATED BY THIS AGREEMENT, NOTWITHSTANDING THE DELIVERY OR DISCLOSURE TO
THE OTHER PARTY OR THE OTHER PARTY'S REPRESENTATIVES OF ANY DOCUMENTATION OR
OTHER INFORMATION WITH RESPECT TO ANY ONE OR MORE OF THE FOREGOING.

         9.8.     NO THIRD PARTY BENEFICIARIES. Except as provided in Section
6.11 (Benefits), and Section 6.13 (Indemnification; Directors' and Officers'
Insurance), this Agreement is not intended to confer upon any Person other than
the parties to this Agreement any rights or remedies under this Agreement.

         9.9.     OBLIGATIONS OF ARCH AND OF PAGENET. Whenever this Agreement
requires a Subsidiary of Arch to take any action, such requirement shall be
deemed to include an undertaking on the part of Arch to cause such Subsidiary to
take such action. Whenever this Agreement requires a Subsidiary of PageNet to
take any action, such requirement shall be deemed to include an undertaking on
the part of PageNet to cause such Subsidiary to take such action and, after the
Effective Time, on the part of the Surviving Corporation to cause such
Subsidiary to take such action.

         9.10.    SEVERABILITY. The provisions of this Agreement shall be deemed
severable and the invalidity or unenforceability of any provision shall not
affect the validity or enforceability or the other provisions of this Agreement.
If any provision of this Agreement, or the application thereof to any Person or
any circumstance, is invalid or unenforceable: (a) a suitable and equitable
provision shall be substituted therefor in order to carry out, so far as may be
valid and enforceable, the intent and purpose of such invalid or unenforceable
provision; and (b) the remainder of this Agreement and the application of such
provision to other Persons or circumstances shall not be affected by



                                       65


<PAGE>   74
such invalidity or unenforceability, nor shall such invalidity or
unenforceability affect the validity or enforceability of such provision, or the
application thereof, in any other jurisdiction.

         9.11.    INTERPRETATION. Where a reference in this Agreement is made to
a section or exhibit, such reference shall be to a section of, or exhibit or
annex to this Agreement unless otherwise indicated. Whenever the words
"include," "includes" or "including" are used in this Agreement, they shall be
deemed to be followed by the words "without limitation."

         9.12.    CAPTIONS. The table of contents, article, section, and
paragraph captions in this Agreement are for convenience of reference only, do
not constitute part of this Agreement and shall not be deemed to limit or
otherwise affect any of the provisions of this Agreement.

         9.13.    ASSIGNMENT. This Agreement shall not be assignable by
operation of law or otherwise, provided, that the parties agree that this
Agreement may be assumed by PageNet as a debtor-in-possession in the Bankruptcy
Case and may be assumed by Arch should Arch become a debtor in any bankruptcy
case under the Bankruptcy Code. Any assignment in contravention of the preceding
sentence shall be null and void.


                                    * * * * *




                                       66


<PAGE>   75

         IN WITNESS WHEREOF, this Agreement has been duly executed and delivered
by the duly authorized officers of the parties to this Agreement as of the date
first written above.




                                          PAGING NETWORK, INC.


                                          By: /s/ John P. Frazee, Jr.
                                              ----------------------------------
                                              Name: John P. Frazee, Jr.
                                              Title: Chairman of the Board and
                                                     Chief Executive Officer



                                          ARCH COMMUNICATIONS GROUP, INC.


                                          By: /s/ C.E. Baker, Jr.
                                              ----------------------------------
                                              Name: C.E. Baker, Jr.
                                              Title: Chairman of the Board and
                                                     Chief Executive Officer



                                          ST. LOUIS ACQUISITION CORP.


                                          By: /s/ C.E. Baker, Jr.
                                              ----------------------------------
                                              Name: C.E. Baker, Jr.
                                              Title: Chief Executive Officer







<PAGE>   1

                                                                    EXHIBIT 99.2


                       AMENDMENT NO. 5 TO RIGHTS AGREEMENT

This Amendment No. 5 dated as of November 15, 1999 hereby amends the Rights
Agreement originally dated as of October 13, 1995, as amended on June 29, 1998,
August 18, 1998, September 3, 1998 and May 14, 1999 (the "Agreement"), between
Arch Communications Group, Inc., a Delaware corporation (the "Company"), and The
Bank of New York, a national banking association, as Rights Agent (the "Rights
Agent").

                              W I T N E S S E T H:

WHEREAS, no Person has become an Acquiring Person as such terms are defined in
the Agreement; and

WHEREAS, the Company has directed the Rights Agent to enter into this Amendment
No. 5 pursuant to Section 27 of the Agreement;

NOW, THEREFORE, in consideration of the premises and mutual agreements set forth
herein, the parties hereby agree as follows:

1.       Section 1(ii) of the Agreement is hereby deleted in its entirety and
the following substituted in lieu thereof:

                  (ii) "Exempted Person" shall mean, prior to the PageNet
                  Effective Time (as defined below): (A) W. R. Huff Asset
                  Management Co., L.L.C., together with its Affiliates
                  (collectively, "Huff"), unless and until such time as Huff,
                  directly or indirectly, becomes the Beneficial Owner of Common
                  Stock in excess of the Huff Exempt Threshold (as defined
                  below), in which event Huff immediately shall cease to be an
                  Exempted Person; (B) Whippoorwill Associates, Inc., together
                  with its Affiliates, including, without limitation, any
                  accounts and investment funds managed by it or its Affiliates
                  (collectively, "Whippoorwill"), unless and until such time as
                  Whippoorwill, directly or indirectly, becomes the Beneficial
                  Owner of Common Stock in excess of the Whippoorwill Exempt
                  Threshold (as defined below), in which case Whippoorwill
                  immediately shall cease to be an Exempted Person; (C)
                  Resurgence Asset Management, L.L.C., together with its
                  Affiliates (collectively, "Resurgence"), unless and until such
                  time as Resurgence, directly or indirectly, becomes the
                  Beneficial Owner of Common Stock in excess of the Resurgence
                  Exempt Threshold (as defined below), in which event Resurgence
                  immediately shall cease to be an Exempted Person. "Exempted
                  Person" shall mean, on or after the PageNet Effective Time,
                  any Person that acquires shares of Common Stock ("Merger
                  Shares") in exchange for shares of common stock of Paging
                  Network, Inc. ("PageNet") upon the consummation of the merger
                  between PageNet and St. Louis Acquisition Corp., a wholly
                  owned


<PAGE>   2

                  subsidiary of the Company ("MergerSub"), pursuant to that
                  Agreement and Plan of Merger among PageNet, the Company and
                  MergerSub dated as of November 7, 1999 as the same may be
                  amended (the " PageNet Merger Agreement") unless and until
                  such time as such Person, directly or indirectly becomes the
                  Beneficial Owner of Common Stock in excess of the Merger
                  Exempt Threshold (as defined below). For purposes of this
                  Agreement: (A) the Huff Exempt Threshold shall mean 23.9% of
                  the Common Stock then outstanding; (B) the Whippoorwill Exempt
                  Threshold shall mean 21.3% of the Common Stock then
                  outstanding; (C) the Resurgence Exempt Threshold shall mean
                  19.0% of the Common Stock then outstanding; and (D) the Merger
                  Exempt Threshold shall mean 20.0% of the Common Stock then
                  outstanding (provided that a majority of the shares of Common
                  Stock Beneficially Owned by such Person are Merger Shares).
                  For purposes of this Agreement, the Huff Exempt Threshold, the
                  Whippoorwill Exempt Threshold, the Resurgence Exempt Threshold
                  and the Merger Exempt Threshold are collectively referred to
                  herein as the "Exempt Threshold." For purposes of this Section
                  1(ii): (A) none of Huff, Credit Suisse First Boston
                  Corporation (or its Affiliates), Whippoorwill or The
                  Northwestern Mutual Life Insurance Company (or its Affiliates)
                  shall be deemed the Beneficial Owner of any shares of Common
                  Stock that are Beneficially Owned by any other Person solely
                  as a result of any such Person's execution and performance of
                  any Standby Purchase Commitment (as such term is defined in
                  the Plan and Agreement of Merger between the Company, Farm
                  Team Corp., a wholly-owned Subsidiary of the Company,
                  MobileMedia Corporation and MobileMedia Communications, Inc.,
                  dated as of August 18, 1998) (as amended, the "Merger
                  Agreement"); (B) no Person shall be deemed the Beneficial
                  Owner of any shares of Common Stock that are Beneficially
                  Owned by any other Person solely as a result of such Person's,
                  or such other Person's service as a member of any committee or
                  working group of debtholders of PageNet or the Company; and
                  (C) Common Stock shall be deemed to include shares of Common
                  Stock issuable upon conversion of shares of the Company's
                  Series C Convertible Preferred Stock, $.01 par value per
                  share. For purposes of this Agreement the PageNet Effective
                  Time shall mean the Effective Time of the Merger as determined
                  pursuant to the PageNet Merger Agreement.



                                      -2-
<PAGE>   3


IN WITNESS WHEREOF, the parties have caused this Amendment No. 5 to be duly
executed and their respective corporate seals to be hereunto affixed and
attested as of the day and year first written above.


                                          ARCH COMMUNICATIONS GROUP, INC.

Attest:

/s/ Gerald J. Cimmino                     By: /s/ C.E. Baker, Jr.
- -----------------------------------           ----------------------------------
Name: Gerald J. Cimmino                   Name: C.E. Baker, Jr.
Title: Vice President and Treasurer       Title: Chairman of the Board and
                                                 Chief Executive Officer

       Seal



                                          THE BANK OF NEW YORK

Attest:

/s/ Eon Canzius                           By: /s/ John Sivertsen
- -----------------------------------           ----------------------------------
Name: Eon Canzius                         Name: John Sivertsen
Title: Assistant Treasurer                Title: Vice President


       Seal





                                      -3-

<PAGE>   1
                                                                    Exhibit 99.3


                                                                    NEWS RELEASE
================================================================================

FOR IMMEDIATE RELEASE               CONTACTS:
- ---------------------               ---------

November 8, 1999                    Arch:    Robert W. Lougee, Jr.  508-870-6771
                                    PageNet: Scott Baradell (Media) 972-801-8180
                                             Kirk Brewer (Investor) 972-801-8012


                     ARCH AND PAGENET SIGN MERGER AGREEMENT;
                 COMPANY TO BE LEADER IN WIRELESS COMMUNICATIONS

      Combined Company Will Have Approximately 16 Million Units in Service
    With Broadest Portfolio of Products and Service Coverage in North America

                      Agreement Calls for Recapitalization
               To Substantially Enhance Consolidated Balance Sheet

             Entity to Spin Off PageNet's Vast Solutions Subsidiary


Westborough, MA and Dallas, TX (November 8, 1999) --- Arch Communications Group,
Inc. (Nasdaq:APGR) and Paging Network, Inc. (Nasdaq:PAGE) (PageNet) today
announced they have signed a definitive agreement to merge the two companies in
a transaction that will create one of the world's largest wireless
communications companies with approximately 16 million units in service
throughout North America.

The transaction will combine PageNet's broad range of wireless products and new
advanced wireless network with Arch's extensive national accounts and sales
presence in major markets nationwide. It will create a wireless communications
leader with estimated annual operating cash flow, prior to expected cost
synergies, of approximately $535 million and annual net revenues in excess of
$1.7 billion, based on third quarter 1999 pro forma combined operating results
of the two companies.

The combined company will retain the name Arch Communications Group, Inc. It
will be headquartered in Westborough but will maintain significant operations in
Dallas.



<PAGE>   2

Among other significant benefits, the merger will give customers of the combined
entity greater access to an expanded range of wireless products and services,
along with greater ubiquity of coverage and reliability with the consolidation
of the two companies' nationwide networks. Expanded service offerings will
include Internet-based wireless information provided through the two companies'
established alliances with such Internet industry leaders as Bloomberg, CNN,
ESPN, Forbes, and Yahoo!, as well as such advanced services as guaranteed
messaging over PageNet's state-of-the-art broadcast network.

The Boards of Directors of both companies have approved the merger agreement,
which requires a recapitalization of the combined company. The recapitalization
will include the conversion of $1.2 billion of PageNet Senior Notes and
approximately $384 million (accreted value as of September 30, 1999) of Arch
Senior Discount Notes, and approximately $28 million (as of September 30, 1999)
of Arch Series C Convertible Preferred Stock into common stock of the merged
entity. Under the terms of the merger, owners of common stock of both companies
will receive common stock in the combined company, with shareholders of Arch
retaining one share of common stock in the combined company for each share they
currently own, and shareholders of PageNet receiving 0.1247 share of common
stock in the combined company for each share they currently own of PageNet
common stock. In addition, owners of PageNet's common stock and Senior Notes
will receive a pro rata distribution of 80.5 percent of PageNet's interest in
Vast Solutions (Vast), which will become a separate entity at the merger's
close. The combined company will trade on The Nasdaq National Market under the
ticker symbol "APGR," Arch's current trading symbol.

Under terms of the merger and proposed recapitalization, the combined company
would have approximately 172.8 million common shares outstanding upon completion
of the transaction, along with total debt of approximately $1.8 billion,
representing a 46 percent reduction in debt from current pro forma levels. When
the merger closes, current holders of PageNet's Senior Notes would own 44.5
percent of the combined company's common stock, and current holders of PageNet's
common stock would own 7.5 percent of the combined company's common stock.
Current holders of Arch common stock would own approximately 29.6 percent of the
combined company's common stock, current holders of Arch Senior Discount Notes
would own approximately 17.2 percent of the combined company's common stock, and
current holders of Series C Convertible Preferred shares would own approximately
1.2 percent of the combined

<PAGE>   3
company's common stock. Additional details of the proposed recapitalization are
outlined in the attached Appendix A.

"The benefits of the merger are significant for the stakeholders of both
companies," said John P. Frazee, Jr., PageNet chairman and chief executive
officer. "The wireless messaging business has been ripe for change for the past
several years, as unit growth has slowed and competition has intensified. Given
this environment, we believe the combined company will be exceptionally well
positioned to lead our evolving business into its next growth phase."

"When the transaction is completed," Frazee added, "the combined company will
have an appropriate capital structure and the financial flexibility needed to
fuel long-term growth. Arch's experience with integrating acquisitions,
especially the operations of MobileMedia, will prove to be invaluable in
maximizing the operational and strategic synergies that we expect to realize as
a result of this merger. After years of building separate companies on capital
bases suited for a rapidly expanding market for paging, the combined company's
proposed capital structure will provide the opportunity to grow a strong
business in today's market, which includes a broader set of wireless competitors
including broadband PCS and other wireless technologies."

C. Edward Baker, Jr., chairman and chief executive officer of Arch, said, "On a
pro forma basis, the proposed combination would immediately provide the combined
company with more than $1.7 billion in annual revenue and EBITDA of
approximately $535 million, based on third quarter 1999 results. This level of
financial performance, combined with total debt of $1.8 billion upon completion
of the recapitalization, would substantially reduce the combined company's
leverage to less than 3.5 times EBITDA. Even before attaining anticipated
synergies, the newly formed company would be free cash flow positive."

Baker added: "In addition to the operational and financial benefits of the
merger, the two companies' customer bases dovetail very well. We believe the
combination of two very strong distribution vehicles will build a formidable
competitor whose business will extend far beyond the industry's traditional
focus on paging. Both companies have strong brands, and we intend to quickly
determine a branding strategy to maximize our market potential."


<PAGE>   4
The companies said they currently expect the merger to generate approximately
$80 million in annual cost synergies over a two-year period from the date of
close, driven primarily by a reduction of redundant functions. The combined
company will be organized around a sales force of more than 2,300 salespeople
supported by state-of-the-art customer service and support platforms.

As part of the transaction, 80.5% of PageNet's interest in Vast will be
distributed to PageNet's bondholders and its existing common stockholders, while
the merged entity will retain the remaining 19.5% interest. The distribution
will enable Vast to be capitalized appropriately for the nature of its business,
while maintaining the advantage of having a strong corporate partner.

John P. Frazee, Jr. will be chairman of the Board of Directors of the combined
company. The combined company management team will be led by C. Edward Baker,
Jr. as chief executive officer, Lyndon R. Daniels as president and chief
operating officer, and J. Roy Pottle as executive vice president and chief
financial officer. Daniels and Pottle will retain their current Arch titles with
the combined entity. Mark A. Knickrehm will remain president and chief operating
officer of Vast Solutions.

The companies said they expect the merger, which is subject to customary
regulatory review, shareholder approval, other third-party consents and the
completion of the recapitalization transactions, to be completed during the
first half of 2000. The recapitalization is expected to be accomplished through
a registered exchange offer that is expected to be filed with the Securities and
Exchange Commission within 30 days. PageNet and Arch said that, in addition to
consents for the proposed recapitalization, the merger agreement permits PageNet
to concurrently solicit consents to effectuate the recapitalization through a
"pre-packaged" Chapter 11 reorganization, which would be contemplated if the
required level of participation in the registered exchange offer is not
obtained.

Paging Networks, Inc. is a leading provider of wireless messaging and
information services with more than 9 million subscribers in all 50 states, the
District of Columbia, the U.S. Virgin Islands, Puerto Rico and Canada. The
company offers a full range of paging and advanced messaging services, including
guaranteed-delivery messaging, two-way wireless e-mail, and global messaging.
PageNet's wholly owned subsidiary, Vast Solutions, plans to introduce a variety
of

<PAGE>   5
customized information services for pagers and other devices, partnering with
content providers such as Yahoo!, CNN, Bloomberg, ESPN and others. Additionally,
Vast Solutions develops integrated wireless solutions to increase productivity
and improve performance for major corporations. Detailed information for PageNet
services are available on the Internet at WWW.PAGENET.COM. Detailed information
about Vast Solutions is available at WWW.VAST.COM. PageNet is a registered
trademark of Paging Network, Inc. Other names are trademarks and/or registered
trademarks of their respective owners.

Arch Communications Group, Inc., Westborough, Mass., is a leading U.S. wireless
messaging company with annual revenues in excess of $800 million. It provides
local, regional and nationwide narrowband wireless messaging services to
customers in all 50 states, the District of Columbia and in the Caribbean. Arch
operates approximately 300 offices and company-owned stores across the country.
Additional information on Arch is available on the Internet at WWW.ARCH.COM.

Safe harbor statement under the Private Securities Litigation Reform Act of
1995: Statements contained in this news release which are not historical fact,
such as forward-looking statements concerning future financial performance and
growth, involve risks and uncertainties, including those described in Arch's and
PageNet's most recent Annual Report on Form 10-K and other filings with the
Securities and Exchange Commission. Although Arch and PageNet believe the
expectations reflected in any forward-looking statements are based on reasonable
assumptions, they can give no assurance that their expectations will be
attained. Factors that could cause actual results to differ materially from
their expectations include the recapitalization of the combined companies,
challenges of integrating the businesses of Arch and PageNet, the future capital
needs following the merger, the uncertainty of additional funding, and other
risks. Any forward-looking statements represent the best judgment of both Arch
and PageNet as of the date of this release. The companies disclaim any intent or
obligation to update any forward-looking statements.


                                (TABLE TO FOLLOW)



<PAGE>   6

Appendix A
Details of proposed recapitalization (1)

<TABLE>
<CAPTION>
($ millions)                                                                  Pro Forma Combined(4)
                                                                      ------------------------------------
                                                       (9/30/99)      Assumed Debt   Common Shares     %
                                                       ---------      ------------   -------------    ----
<S>                                                     <C>              <C>              <C>         <C>

Arch Bank Debt                                          $  450
Combined Bank Debt                                                       $  450

PageNet Bank Debt                                       $  804
Combined Bank Debt                                                       $  804

Combined Company Bank Debt (2)                          $1,254           $1,254

ACI Senior Notes                                        $  493
Combined Senior Notes                                                    $  493

Arch Convertible Debentures (5)                         $    5
Combined Convertible Debentures                                          $    5

PageNet Senior Notes                                    $1,200               --
Combined Common Shares                                                                   76.9        44.5%

PageNet Common Shares                                      104               --
Combined Common Shares                                                                   13.0         7.5%
                                                                                         ----        ----

PageNet Stakeholder Interest in
Combined Company                                                                         89.9        52.0%

Arch Series C Convertible Preferred Shares (3)          $   28               --
Combined Common Shares                                                                    2.1         1.2%

Arch Senior Discount Notes (5)                          $  384               --
Combined Common Shares                                                                   29.6        17.2%

Arch Common Shares                                        51.2
Combined Common Shares                                                                   51.2        29.6%
                                                                                         ----        ----

Arch Stakeholder Interest in
Combined Company                                                                         82.9        48.0%

Combined Company Total Debt                             $3,336           $1,752

Combined Company Total Shares                                                           172.8         100%

</TABLE>


(1)  Assumes 100% of existing security holders participate in the exchange
     offers contemplated in the recapitalization.

(2)  Excludes potential borrowings at closing to pay transaction and other
     costs.

(3)  On an "as converted" basis.

(4)  All references to pro forma Combined Company common shares and ownership
     percentages are based on primary shares only.

(5)  Pro forma for debt-for-equity exchange completed after 9/30/99.




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