DAVEL COMMUNICATIONS GROUP INC
8-K, 1998-06-23
COMMUNICATIONS SERVICES, NEC
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<PAGE>
 
- -------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                    Form 8-K

               Current Report Pursuant to Section 13 of 15(d) of
                           The Securities Act of 1934

               Date of Report (Date of earliest event reported):
                                  May 14, 1998

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

   Illinois                    0-22610                    37-1064777
(State or other jurisdiction   (Commission file number)   (I.R.S. Employer
incorporation)                                            Identification Number)


                  1429 Massaro Boulevard, Tampa, Florida 33619
               (Address of Principal Executive Offices)(Zip Code)

                                 (813)623-3545
              (Registrant's telephone number, including area code)

- ------------------------------------------------------------------------------- 
<PAGE>
 
Item 5.  Other Events

     Execution of Stock Purchase Agreement
     -------------------------------------

     On May 14, 1998, Davel Communications Group, Inc. (the "Company") and
Samstock, L.L.C. entered into a Stock Purchase Agreement (the "Purchase
Agreement"), pursuant to which the Company will sell 1,000,000 shares of newly
issued common stock of the Company, no par value (the "Shares"), and warrants to
purchase an additional 218,750 newly issued shares at an exercise price of
$32.00 per share (the "Warrants"), to an affiliate of Equity Group Investments,
Inc., a privately-held investment company controlled by Sam Zell.  The
affiliate, Samstock, L.L.C. (the "Purchaser"), will pay $28,000,000 in the
aggregate for the Shares and the Warrants.  The Purchaser will also pay (i)
$14,000,000 to the Company's chairman, David Hill, to purchase 500,000 shares of
Company common stock owned by Mr. Hill and warrants to purchase up to an
additional 131,250 shares of Company common stock owned by him at an exercise
price of $32.00 per share and (ii) an aggregate of $3,469,200 to purchase
123,900 shares of Company common stock from seven other selling shareholders who
serve as directors or officers of the Company.  Pursuant to the terms of the
Purchase Agreement and the agreements contemplated therein, Sam Zell and F.
Philip Handy will join the Company's Board of Directors.

     Execution of Agreement and Plan of Merger and Reorganization
     ------------------------------------------------------------

     On June 11, 1998, the Company, Davel Holdings, Inc., a Delaware corporation
and a wholly owned subsidiary of the Company, D Subsidiary, Inc., an Illinois
corporation and a wholly owned subsidiary of the Company, PT Merger Corp., an
Ohio corporation and a wholly owned subsidiary of the Company, and PhoneTel
Technologies, Inc., an Ohio corporation ("PhoneTel"), entered into an Agreement
and Plan of Merger and Reorganization (the "Merger Agreement"). Pursuant to the
Merger Agreement, PhoneTel and the Company will combine their operations under a
newly formed holding company to be called Davel Communications, Inc. ("New
Davel").  Holders of issued and outstanding shares of the common stock, no par
value, of the Company ("Company Common Stock") will receive in exchange therefor
one share of the common stock of New Davel, par value $.01 per share ("New Davel
Common Stock") for each share of Company Common Stock, and holders of issued and
outstanding shares of the common stock, $.01 par value per share, of PhoneTel
(the "PhoneTel Common Stock") will receive in exchange therefor shares of New
Davel Common Stock, based upon a value of $3.08 per share of PhoneTel Common
Stock.  The number of shares of New Davel Common Stock issued to holders of
PhoneTel Common Stock will be based on the Company's average closing price for
the 30 consecutive trading days ending on the second trading day prior to
shareholder approval of the transaction, subject to a cap of 0.13765 shares of
New Davel Common Stock for each share of PhoneTel Common Stock. The transaction
will be accounted for as a pooling of interests and is expected to be tax free
to shareholders of PhoneTel and the Company.  Pursuant to the Merger Agreement,
Peter Graf, Chairman of PhoneTel, will serve on the Company's Board of Directors
for a one-year period.

     The transaction, which is expected to close in the fall of 1998, is subject
to the approval of the shareholders of both companies and receipt of regulatory
approvals. Holders of approximately 28% and 50.6% of the outstanding PhoneTel
Common Stock and Company Common Stock, respectively, have entered into
agreements to vote in favor of the transaction.  In addition, Samstock, L.L.C.
has entered into an agreement with PhoneTel to vote in favor of the transaction
all 1,623,900 shares of Company Common Stock that it will acquire as described
above.  The transaction is subject to certain other conditions, including the
redemption of PhoneTel's 14% PIK Preferred Stock and completion of a cash tender
offer for PhoneTel's 12% Senior Notes due 2006 at a price not exceeding 101% of
the $125 million principal amount of the notes, with a minimum of 80% of such
principal amount having been tendered.  Satisfaction of these conditions is
dependent upon receipt by the Company of financing, which is expected to be
obtained through a combination of high yield debt and a senior credit facility.
<PAGE>
 
Item 7.     Financial Statements, Pro Forma Financial Information and Exhibits

     (c)    Exhibits

     2.1       Agreement and Plan of Merger and Reorganization, dated June 11,
               1998, by and among Davel Communications Group, Inc., Davel
               Holdings, Inc., D Subsidiary, Inc., PT Merger Corp. and PhoneTel
               Technologies, Inc.

     10.1      Stock Purchase Agreement, dated May 14, 1998, by and between
               Davel Communications Group, Inc. and Samstock, L.L.C.

     10.2      Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and ING (U.S.) Investment Corporation.

     10.3      Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Cerberus Partners, L.P.

     10.4      Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Peter Graf.

     10.5      Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. George Henry.

     10.6      Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Steven Richman.

     10.7      Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Aron Katzman.

     10.8      Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Joseph Abrams.

     99.1      Joint Press Release of Davel Communications Group, Inc. and
               PhoneTel Technologies, Inc., dated June 12, 1998.

                                       2
<PAGE>
 
SIGNATURES

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



                             DAVEL COMMUNICATIONS GROUP, INC.

Date: June 23, 1998          By:  /s/ Michael E. Hayes
                                --------------------------------
                                  Michael E. Hayes
                                  Senior Vice President and
                                  Chief Financial Officer

                              3
<PAGE>
 
                                 Exhibit Index
                                 -------------


Exhibit Number Description of Exhibit
- -------------- ----------------------

2.1            Agreement and Plan of Merger and Reorganization, dated June 11,
               1998, by and among Davel Communications Group, Inc., Davel
               Holdings, Inc., D Subsidiary, Inc., PT Merger Corp. and PhoneTel
               Technologies, Inc.

10.1           Stock Purchase Agreement, dated May 14, 1998, by and between
               Davel Communications Group, Inc. and Samstock, L.L.C.

10.2           Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and ING (U.S.) Investment Corporation.

10.3           Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Cerberus Partners, L.P.

10.4           Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Peter Graf.

10.5           Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. George Henry.

10.6           Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Steven Richman.

10.7           Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Aron Katzman.

10.8           Voting Agreement, dated June 11, 1998, between Davel
               Communications Group, Inc. and Mr. Joseph Abrams.

99.1           Joint Press Release of Davel Communications Group, Inc. and
               PhoneTel Technologies, Inc., dated June 12, 1998.

                                       4

<PAGE>

================================================================================
                                                                     EXHIBIT 2.1


                         AGREEMENT AND PLAN OF MERGER
                              AND REORGANIZATION

                                     dated

                                 June 11, 1998

                                 by and among

                       Davel Communications Group, Inc.,

                             Davel Holdings, Inc.,

                              D Subsidiary, Inc.,

                                PT Merger Corp.

                                      and

                          PhoneTel Technologies, Inc.

================================================================================
<PAGE>
 

                                TABLE OF CONTENTS

<TABLE> 
<CAPTION> 
                                                                            PAGE
                                                                            ----

                                   ARTICLE I
                              THE PHONETEL MERGER
<S>                                                                         <C> 
Section 1.01 Effectuation of the PhoneTel Merger.........................    -2-
Section 1.02 Conversion of PhoneTel Shares...............................    -3-
Section 1.03 Exchange of PhoneTel Shares.................................    -4-
Section 1.04 Certain PhoneTel Adjustments................................    -7-
Section 1.05 PhoneTel Stock Options and Warrants.........................    -7-
Section 1.06 Dissenter's Rights..........................................    -8-
Section 1.07 PhoneTel Articles of Incorporation..........................    -9-
Section 1.08 PhoneTel Bylaws.............................................    -9-
Section 1.09 PhoneTel Directors and Officers.............................    -9-


                                   ARTICLE II
                                THE DAVEL MERGER

Section 2.01 Effectuation of Davel Merger................................    -9-
Section 2.02 Conversion of Old Davel Shares..............................   -10-
Section 2.03 Exchange of Old Davel Shares................................   -11-
Section 2.04 Certain Davel Adjustments...................................   -13-
Section 2.05 Davel Stock Options and Warrants............................   -13-
Section 2.06 Dissenters' Rights..........................................   -14-
Section 2.07 Davel Articles of Incorporation.............................   -15-
Section 2.08 Davel Bylaws................................................   -15-
Section 2.09 Davel Directors and Officers................................   -15-


                                  ARTICLE III
                   REPRESENTATIONS AND WARRANTIES OF PHONETEL

Section 3.01 Corporate Organization......................................   -15-
Section 3.02 Authorization...............................................   -16-
Section 3.03 Capital Stock...............................................   -16-
Section 3.04 Subsidiaries................................................   -16-
Section 3.05 Consents and Approvals; No Violation........................   -17-
Section 3.06 SEC Reports and Financial Statements........................   -18-
Section 3.07 Absence of Undisclosed Liabilities..........................   -18-
Section 3.08 Changes.....................................................   -18-
Section 3.09 Investigations; Litigation..................................   -19-
Section 3.10 Contracts and Commitments...................................   -20-
Section 3.11 Environmental Matters.......................................   -20-
</TABLE> 

                                      -i-
<PAGE>
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C> 
Section 3.12 Taxes.......................................................   -21-
Section 3.13 Employment Agreements.......................................   -21-
Section 3.14 Change of Control Provisions................................   -21-
Section 3.15 Employee Benefit Plans......................................   -21-
Section 3.16 Licenses....................................................   -23-
Section 3.17 Real Estate Leases..........................................   -23-
Section 3.18 Intellectual Property.......................................   -23-
Section 3.19 Compliance with Other Instruments and Laws..................   -24-
Section 3.20 Employees...................................................   -24-
Section 3.21 Information Supplied........................................   -24-
Section 3.22 Certain Fees................................................   -25-
Section 3.23 Opinion of Financial Advisor................................   -25-
Section 3.24 Voting Requirements.........................................   -25-
Section 3.25 State Takeover Statutes.....................................   -25-
Section 3.26 Payphones...................................................   -25-
Section 3.27 Average Net Revenue.........................................   -25-
                                                                            
                                                                            
                                   ARTICLE IV                               
                         REPRESENTATIONS AND WARRANTIES                     
                                  OF OLD DAVEL                              
                                                                            
Section 4.01 Corporate Organization......................................   -26-
Section 4.02 Authorization...............................................   -26-
Section 4.03 Capital Stock...............................................   -27-
Section 4.04 Subsidiaries................................................   -27-
Section 4.05 Consents and Approvals; No Violations.......................   -27-
Section 4.06 SEC Reports and Financial Statements........................   -28-
Section 4.07 Absence of Undisclosed Liabilities..........................   -28-
Section 4.08 Changes.....................................................   -29-
Section 4.09 Investigations; Litigation..................................   -29-
Section 4.10 Environmental Matters.......................................   -30-
Section 4.11 Certain Fees................................................   -30-
Section 4.12 Taxes.......................................................   -31-
Section 4.13 Change of Control Provisions................................   -31-
Section 4.14 Licenses....................................................   -31-
Section 4.15 Compliance with Other Instruments and Laws..................   -31-
Section 4.16 Employees...................................................   -32-
Section 4.17 Information Supplied........................................   -32-
Section 4.18 Opinion of Financial Advisor................................   -32-
Section 4.19 Voting Requirements.........................................   -32-
Section 4.20 State Takeover Statutes.....................................   -32-
Section 4.21 No Company Shares...........................................   -33-
Section 4.22 Rights......................................................   -33-
Section 4.23 Davel Financing Arrangements................................   -33-
</TABLE> 

                                      -ii-
<PAGE>
 
<TABLE>
<CAPTION>  
                                                                            PAGE
                                                                            ----


                                    ARTICLE V
                              COVENANTS OF PHONETEL
<S>                                                                         <C> 
Section 5.01 Conduct of Business by PhoneTel Pending
             the PhoneTel Merger.........................................   -33-
Section 5.02 Stockholders' Meeting.......................................   -34-
Section 5.03 Access to Information.......................................   -35-
Section 5.04 No Solicitation.............................................   -35-
Section 5.05 Corporate Organization......................................   -36-
Section 5.06 Preferred Stock and Notes...................................   -36-
Section 5.07 Additional Voting Agreements................................   -36-
Section 5.08 Confidentiality.............................................   -36-


                                 ARTICLE VI
                             COVENANTS OF OLD DAVEL

Section 6.01 Confidentiality.............................................   -37-
Section 6.02 Obligations of the Davel Subsidiaries.......................   -37-
Section 6.03 Indemnification.............................................   -37-
Section 6.04 Davel Stockholders' Meeting.................................   -38-
Section 6.05 New Davel Corporate Governance..............................   -38-
Section 6.06 Davel Financing.............................................   -38-
Section 6.07 Employee Matters............................................   -38-
Section 6.08 Financial Disclosure........................................   -39-


                                  ARTICLE VII
                            COVENANTS OF THE PARTIES

Section 7.01 Reasonable Best Efforts.....................................   -39-
Section 7.02 Certain Filings.............................................   -40-
Section 7.03 Public Announcements........................................   -40-
Section 7.04 Further Assurances..........................................   -40-
Section 7.05 Notices of Certain Events...................................   -40-
Section 7.06 Preparation of the Form S-4 and the Proxy Statement.........   -41-
Section 7.07 Letters of Accountants......................................   -41-
Section 7.08 Affiliates..................................................   -42-
Section 7.09 Nasdaq Listing..............................................   -42-
Section 7.10 Tax Treatment...............................................   -42-
Section 7.11 Pooling of Interests........................................   -43-
Section 7.12 Representations.............................................   -43-
</TABLE> 

                                     -iii-
<PAGE>
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----


                                  ARTICLE VII
                            CONDITIONS TO THE MERGER
<S>                                                                         <C> 
Section 8.01 Conditions to the Obligations of Each Party.................   -43-
Section 8.02 Conditions to the Obligations of Old Davel,                  
             New Davel, D Sub and P Sub..................................   -44-
Section 8.03 Conditions to the Obligations of PhoneTel...................   -45-


                                   ARTICLE IX
                             TERMINATION AND WAIVER

Section 9.01 Termination.................................................   -45-
Section 9.02 Waiver......................................................   -47-
Section 9.03 Effect of Termination; Termination Fee......................   -47-


                                   ARTICLE X
                                 MISCELLANEOUS

Section 10.01 Closing....................................................   -48-
Section 10.02 Notices....................................................   -48-
Section 10.03 Survival of Representations and Warranties.................   -49-
Section 10.04 Amendments; No Waivers.....................................   -49-
Section 10.05 Expenses...................................................   -49-
Section 10.06 Successors and Assigns.....................................   -49-
Section 10.07 Governing Law; Jurisdiction................................   -49-
Section 10.08 Counterparts; Effectiveness................................   -50-
Section 10.09 Headings...................................................   -50-
Section 10.10 No Third Party Beneficiaries...............................   -50-
Section 10.11 Entire Agreement...........................................   -50-
</TABLE> 

                                      -iv-
<PAGE>
 
<TABLE>
<CAPTION>
                                  DEFINED TERMS

                                                                            PAGE
                                                                            ----
<S>                                                                         <C> 
Acquisition Proposal.....................................................   -35-
Adjusted Old Davel Option................................................   -13-
Adjusted Old Davel Warrant...............................................   -13-
Adjusted PhoneTel Option.................................................    -7-
Adjusted PhoneTel Warrant................................................    -7-
Affected Employee........................................................   -38-
Agreement................................................................    -1-
Average Net Revenue......................................................   -25-
Closing..................................................................   -48-
Closing Date.............................................................   -48-
Confidentiality Agreement................................................   -36-
Consulting Agreement.....................................................    -1-
Contracts................................................................   -20-
D Sub....................................................................    -1-
Davel Articles of Merger.................................................    -9-
Davel Disclosure Letter..................................................   -26-
Davel Dissenting Shares..................................................   -14-
Davel Effective Time.....................................................    -9-
Davel Exchange Fund......................................................   -11-
Davel Exchange Ratio.....................................................   -10-
Davel Material Adverse Effect............................................   -26-
Davel Merger.............................................................    -1-
Davel Merger Consideration...............................................   -10-
Davel Stockholders Approval..............................................   -26-
Davel Stockholders Meeting...............................................   -38-
Davel Subsidiaries.......................................................   -27-
Davel Subsidiary.........................................................   -27-
Davel Surviving Corporation..............................................    -9-
Davel Voting Agreements..................................................    -2-
DCG, Inc.................................................................   -15-
Debt Tender..............................................................   -36-
Disclosure Document......................................................   -40-
Dissenting Shares........................................................    -8-
Employment Agreement.....................................................    -1-
Environmental and Safety Laws............................................   -30-
Environmental Laws.......................................................   -20-
ERISA....................................................................   -22-
Exchange Act.............................................................   -17-
Exchange Agent...........................................................    -4-
Executive Agreements.....................................................    -1-
Filed Davel Reports......................................................   -29-
Filed PhoneTel Reports...................................................   -18-
</TABLE> 

                                      -v-
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                                            PAGE
                                                                            ----
<S>                                                                         <C> 
Final Average Closing Price..............................................    -3-
Financing................................................................   -33-
Form S-4.................................................................   -24-
GAAP.....................................................................   -18-
Governmental Entity......................................................   -17-
HSR Act..................................................................   -17-
Illinois Law.............................................................    -9-
Indemnified Parties......................................................   -37-
Intellectual Property....................................................   -23-
Investigation............................................................   -19-
Letter...................................................................   -33-
Licenses.................................................................   -23-
Location Owners..........................................................   -20-
Measurement Date.........................................................    -3-
New Davel................................................................    -1-
New Davel Common Stock...................................................    -3-
New Davel Right..........................................................    -3-
New Davel Rights Agreement...............................................    -3-
New Davel Stock Option Plans.............................................    -7-
Notes....................................................................   -36-
Ohio Law.................................................................    -2-
Old Davel................................................................    -1-
Old Davel 10-K...........................................................   -28-
Old Davel 10-Q...........................................................   -28-
Old Davel Certificates...................................................   -11-
Old Davel Common Stock...................................................   -10-
Old Davel Investigation..................................................   -29-
Old Davel Options........................................................   -13-
Old Davel Reports........................................................   -28-
Old Davel Rights.........................................................   -10-
Old Davel Warrants.......................................................   -13-
P Sub....................................................................    -1-
PhoneTel.................................................................    -1-
PhoneTel 10-K............................................................   -18-
PhoneTel 10-Q............................................................   -18-
PhoneTel Certificate of Merger...........................................    -2-
PhoneTel Certificates....................................................    -4-
PhoneTel Common Stock....................................................    -3-
PhoneTel Disclosure Letter...............................................   -15-
PhoneTel Effective Time..................................................    -2-
PhoneTel Exchange Fund...................................................    -4-
PhoneTel Exchange Ratio..................................................    -3-
PhoneTel Material Adverse Effect.........................................   -15-
PhoneTel Merger..........................................................    -1-
PhoneTel Merger Consideration............................................    -3-
</TABLE> 

                                      -vi-
<PAGE>
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
PhoneTel Options...........................................................  -7-
PhoneTel Reports........................................................... -18-
PhoneTel Stockholder Approval.............................................. -16-
PhoneTel Stockholders Meeting.............................................. -34-
PhoneTel Subsidiaries...................................................... -16-
PhoneTel Subsidiary........................................................ -16-
PhoneTel Surviving Corporation.............................................  -2-
PhoneTel Voting Agreements.................................................  -1-
PhoneTel Warrants..........................................................  -7-
PIK Preferred Stock........................................................ -16-
Plans...................................................................... -22-
Pooling Affiliate.......................................................... -42-
Preferred Stock............................................................ -16-
Proxy Statement............................................................ -17-
SEC........................................................................  -8-
Securities Act............................................................. -18-
Series A Preferred Stock................................................... -16-
Series B Preferred Stock................................................... -16-
Site Location Agreements................................................... -23-
Trading Day................................................................  -3-
Transaction................................................................  -1-
</TABLE>

                                     -vii-
<PAGE>
 
                AGREEMENT AND PLAN OF MERGER AND REORGANIZATION


          This AGREEMENT AND PLAN OF MERGER AND REORGANIZATION (this
"Agreement") is made and entered into June 11, 1998, by and among Davel
 ---------                                                             
Communications Group, Inc., an Illinois corporation ("Old Davel"), Davel
                                                      ---------         
Holdings, Inc., a Delaware corporation and a wholly owned subsidiary of Old
Davel ("New Davel"), PT Merger Corp., an Ohio corporation and a wholly owned
        ---------                                                           
subsidiary of New Davel ("P Sub"), D Subsidiary, Inc., an Illinois corporation
                          -----                                               
and a wholly owned subsidiary of New Davel ("D Sub"), and PhoneTel Technologies,
                                             -----                              
Inc., an Ohio corporation ("PhoneTel").
                            --------   

                                   RECITALS
                                   --------

          WHEREAS, the Boards of Directors of Old Davel and PhoneTel deem it
advisable and in the best interests of the stockholders of such corporations to
effect a business combination of Old Davel and PhoneTel through the transactions
provided for herein (collectively, the "Transaction"), as a result of which each
                                        -----------                             
of Old Davel and PhoneTel shall become a wholly-owned subsidiary of New Davel;

          WHEREAS, in order to effect the Transaction, (a) D Sub shall be merged
with and into Old Davel with Old Davel surviving as a wholly owned subsidiary of
New Davel (the "Davel Merger"), and (b) P Sub shall be merged with and into
                ------------                                               
PhoneTel with PhoneTel surviving as a wholly-owned subsidiary of New Davel (the
"PhoneTel Merger"), in each case pursuant to this Agreement;
 ---------------                                            

          WHEREAS, the respective Boards of Directors of Old Davel and D Sub
have approved the Davel Merger, and the Board of Directors of Old Davel has
unanimously resolved to recommend that the Davel Merger be approved by the
stockholders of Old Davel;

          WHEREAS, the respective Boards of Directors of PhoneTel and P Sub have
approved of the PhoneTel Merger, and the PhoneTel Board of Directors has
unanimously resolved to recommend that the PhoneTel Merger be approved by the
stockholders of PhoneTel;

          WHEREAS, concurrently with the execution and delivery of this
Agreement and as a condition and inducement to the willingness of Old Davel and
New Davel to enter into this Agreement, (i) each director of PhoneTel, ING
(U.S.) Investment Corporation and Cerberus Partners, L.P. have entered into
Voting Agreements with Old Davel dated the date of this Agreement (collectively,
the "PhoneTel Voting Agreements"), (ii) the chief executive officer of PhoneTel
     --------------------------                                                
has entered into a Consulting and Non-Competition Agreement with PhoneTel, dated
the date of this Agreement (the "Consulting Agreement"), and (iii) the chief
                                 --------------------                       
administrative officer of PhoneTel has entered into an Employment and Non-
Competition Agreement with PhoneTel, dated the date of this Agreement (the
"Employment Agreement" and, together with the Consulting Agreement, the
- ---------------------                                                  
"Executive Agreements");
- ---------------------   
<PAGE>
 
          WHEREAS, concurrently with the execution and delivery of this
Agreement and as a condition and inducement to PhoneTel's willingness to enter
into this Agreement, Mr. David R. Hill and Samstock, L.L.C. have entered into
Voting Agreements with PhoneTel, dated the date of this Agreement (collectively,
the "Davel Voting Agreements");
     -----------------------   

          WHEREAS, for Federal income tax purposes, it is intended that the
PhoneTel Merger and the Davel Merger shall collectively qualify as an integrated
transaction described in Section 351 of the Internal Revenue Code of 1986, as
amended (the "Code"), and that the shareholders of PhoneTel and Old Davel will
              ----                                                            
recognize no gain or loss for Federal income tax purposes as a result of the
consummation of the PhoneTel Merger or the Davel Merger, except with respect to
any cash received.

          WHEREAS, Old Davel, New Davel and D Sub desire, for Federal income tax
purposes, that the Davel Merger also qualify as a tax-free reorganization under
the provisions of Section 368(a) of the Code and that this Agreement adopted as
a plan of reorganization under the provisions of Section 368(a) of the Code, and

          WHEREAS, for accounting purposes, it is intended that the Transaction
be accounted for as a "pooling of interests".

          NOW, THEREFORE, in consideration of the foregoing and of the mutual
representations, warranties, covenants and agreements set forth herein, the
parties agree as follows:


                                   ARTICLE I

                              THE PHONETEL MERGER

          Section 1.01   Effectuation of the PhoneTel Merger.
                         ----------------------------------- 

               (a)  On the terms and subject to the conditions hereof, on the
Closing Date, the parties shall effect the PhoneTel Merger, pursuant to which P
Sub shall be merged with and into PhoneTel in accordance with the Ohio General
Corporation Law ("Ohio Law"), whereupon the separate corporate existence of P
                  --------                                                    
Sub shall cease, and PhoneTel shall be the surviving corporation (the "PhoneTel
                                                                       --------
Surviving Corporation").
- ---------------------   

               (b)  On the Closing Date, in order to effectuate the PhoneTel
Merger, PhoneTel and P Sub shall file a certificate of merger with the Secretary
of State of the State of Ohio (the "PhoneTel Certificate of Merger") and make
                                    ------------------------------
all other filings or recordings required by Ohio Law in connection with the
PhoneTel Merger. The PhoneTel Merger shall become effective at such time as the
PhoneTel Certificate of Merger is duly filed with the Secretary of State of the
State of Ohio and any additional requirements of Ohio Law are complied with (the
"PhoneTel Effective Time").
 ------------------------   

               (c)  From and after the PhoneTel Effective Time, the PhoneTel
Surviving Corporation shall possess all the assets, rights, privileges, powers
and franchises and be subject to

                                      -2-
<PAGE>
 
all of the liabilities, restrictions, disabilities and duties of PhoneTel and P
Sub, all as provided under Ohio Law.

          Section 1.02   Conversion of PhoneTel Shares.
                         ----------------------------- 

               (a)  At the PhoneTel Effective Time and by virtue of the PhoneTel
Merger and without any action on the part of the holders thereof:

                    (i)   each share of common stock, par value $0.01 per share,
     of PhoneTel ("PhoneTel Common Stock") held by PhoneTel as treasury stock,
                   ---------------------
     or owned by Old Davel, New Davel or any other Davel Subsidiary, if any,
     immediately prior to the PhoneTel Effective Time shall be canceled, and no
     payment shall be made with respect thereto; provided, however, that any
                                                 --------  -------          
     shares of PhoneTel Common Stock as to which PhoneTel or any PhoneTel
     Subsidiary is or may be required to act as a fiduciary or in a similar
     capacity shall not be canceled but, instead, shall be treated as set forth
     in Section 1.02(a)(iii) below;

                    (ii)  each share of capital stock of P Sub outstanding
     immediately prior to the PhoneTel Effective Time shall be converted into
     and become one share of capital stock of the PhoneTel Surviving Corporation
     with the same rights and privileges as the shares so converted and shall
     constitute the only outstanding shares of capital stock of the PhoneTel
     Surviving Corporation; and

                    (iii) subject to Sections 1.03(e) and 1.06 hereof, each
     share of PhoneTel Common Stock outstanding immediately prior to the
     PhoneTel Effective Time shall, except as otherwise provided in clause (i)
     of this subsection, be converted into the right to receive a number of
     fully paid and nonassessable shares of common stock, par value $.01 per
     share (including each attached New Davel Right, the "New Davel Common
                                                          ----------------
     Stock") of New Davel (the "PhoneTel Merger Consideration") equal to the
     -----                      -----------------------------   
     quotient (the "PhoneTel Exchange Ratio") of $3.08 divided by the average of
                    -----------------------  
     the closing prices (the "Final Average Closing Price") of Old Davel Common
                              ---------------------------
     Stock on the Nasdaq National Market on the 30 consecutive Trading Days
     ending on the second Trading Day (the "Measurement Date") prior to the date
                                            ----------------
     of the PhoneTel Stockholders Meeting; provided, however, that if the Final
                                           --------  -------
     Average Closing Price shall be less than $22.375, the Final Average Closing
     Price as determined in accordance with this Section 1.02(a)(iii) shall be
     deemed to be $22.375 and the PhoneTel Exchange Ratio shall be 0.13765. As
     of the PhoneTel Effective Time, all such shares of PhoneTel Common Stock
     shall no longer be outstanding and shall automatically be canceled and
     retired and shall cease to exist, and each holder of a certificate
     representing any such PhoneTel Common Stock shall cease to have any rights
     with respect thereto, except the right to receive the PhoneTel Merger
     Consideration and any cash in lieu of fractional shares of New Davel Common
     Stock to be issued or paid in consideration therefor upon surrender of such
     certificate in accordance with Section 1.03(e) hereof, without interest.
     The term "New Davel Right", as used herein, means the common stock purchase
               ---------------
     rights to be issued pursuant to the Rights Agreement (the "New Davel Rights
                                                                ----------------
     Agreement") to be entered into by and between New Davel and ChaseMellon
     ---------
     Shareholder Services, L.L.C., as Rights Agent, between the date hereof and
     the Closing Date. For the purposes hereof, "Trading Day" shall mean any day
                                                 -----------
     on which the Nasdaq Stock Market is open for trading.

                                      -3-
<PAGE>
 
          Section 1.03   Exchange of PhoneTel Shares.
                         --------------------------- 

               (a) Prior to the PhoneTel Effective Time, New Davel shall enter
into an agreement with ChaseMellon Shareholder Services, L.L.C., as exchange
agent for the PhoneTel Merger and the Davel Merger (the "Exchange Agent"), which
                                                         ---------------   
shall provide that New Davel shall deposit with the Exchange Agent prior to the
PhoneTel Effective Time, for the benefit of the holders of shares of PhoneTel
Common Stock, for exchange in accordance with this Article I, through the
Exchange Agent, certificates representing the shares of New Davel Common Stock
issuable pursuant to Section 1.02 hereof in exchange for outstanding shares of
PhoneTel Common Stock (such shares of New Davel Common Stock, together with any
dividends or distributions with respect thereto payable to such holder in
accordance with Section 1.03(c) hereof, and any cash payable in lieu of any
fractional shares of New Davel Common Stock in accordance with Section 1.03(e)
hereof, being herein referred to as the "PhoneTel Exchange Fund").
                                         ----------------------

               (b) As soon as reasonably practicable after the PhoneTel
Effective Time, the Exchange Agent shall mail to each holder of record of a
certificate or certificates which immediately prior to the PhoneTel Effective
Time represented outstanding shares of PhoneTel Common Stock (the "PhoneTel
                                                                   --------
Certificates") whose shares of PhoneTel Common Stock were converted into the
- ------------
right to receive the PhoneTel Merger Consideration pursuant to Section 1.02
hereof, (i) a letter of transmittal (which shall specify that delivery shall be
effected, and risk of loss and title to the PhoneTel Certificates shall pass,
only upon delivery of the PhoneTel Certificates to the Exchange Agent and shall
be in such form and have such other provisions typical in transactions of this
type as New Davel may reasonably specify) and (ii) instructions for use in
surrendering the PhoneTel Certificates in exchange for the PhoneTel Merger
Consideration, as applicable. Upon surrender of a PhoneTel Certificate for
cancellation to the Exchange Agent, together with such letter of transmittal,
duly executed, and such other documents as may reasonably be required by the
Exchange Agent, the holder of such PhoneTel Certificate shall be entitled to
receive in exchange therefor a certificate representing that number of whole
shares of New Davel Common Stock which such holder has the right to receive
pursuant to the provisions of this Article I, any dividends or other
distributions with respect thereto payable to such holder in accordance with
Section 1.03(c) hereof and any cash payable in lieu of any fractional share of
New Davel Common Stock in accordance with Section 1.03(e) hereof, and the
PhoneTel Certificate so surrendered shall forthwith be canceled. In the event of
a transfer of ownership of shares of PhoneTel Common Stock which is not
registered in the transfer records of PhoneTel, a certificate representing the
proper number of shares of New Davel Common Stock may be issued to a person
other than the person in whose name the PhoneTel Certificate so surrendered is
registered if such PhoneTel Certificate is properly endorsed or otherwise in
proper form for transfer and the person requesting such issuance pays any
transfer or other taxes required by reason of the issuance of shares of New
Davel Common Stock to a person other than the registered holder of such PhoneTel
Certificate or establishes to the satisfaction of New Davel that such tax has
been paid or is not applicable. Until surrendered as contemplated by this
Section 1.03, each PhoneTel Certificate shall be deemed at any time after the
PhoneTel Effective Time to represent only the right to receive upon such
surrender that number of whole shares of New Davel Common Stock which the holder
thereof has the right to receive pursuant to the provisions of this Article I,
any dividends or other distributions payable to the holder thereof in accordance
with Section 1.03(c) hereof and cash in lieu of any fractional share of New
Davel Common Stock in accordance with

                                      -4-
<PAGE>
 
Section 1.03(e) hereof.  No interest shall be paid or shall accrue on any cash
payable to holders of PhoneTel Certificates pursuant to the provisions of this
Article I.

               (c)  No dividends or other distributions with respect to New
Davel Common Stock with a record date after the PhoneTel Effective Time shall be
paid to the holder of any unsurrendered PhoneTel Certificate with respect to the
shares of New Davel Common Stock represented thereby, and, in the case of
PhoneTel Certificates, no cash payment in lieu of a fractional share of New
Davel Common Stock shall be paid to any such holder pursuant to Section 1.03(e)
hereof, and all such dividends, other distributions and cash in lieu of
fractional shares of New Davel Common Stock shall be paid by New Davel to the
Exchange Agent and shall be included in the Exchange Fund, in each case, until
the surrender of such PhoneTel Certificate in accordance with this Article I.
Subject to the effect of applicable escheat or similar laws, following surrender
of any such PhoneTel Certificate, there shall be paid to the holder of the
certificate representing whole shares of New Davel Common Stock issued in
exchange therefor, without interest, (i) at the time of such surrender, the
amount of dividends or other distributions with a record date after the PhoneTel
Effective Time theretofore paid with respect to such whole shares of New Davel
Common Stock, and, in the case of PhoneTel Certificates, the amount of any cash
payable in lieu of a fractional share of New Davel Common Stock to which such
holder is entitled pursuant to Section 1.03(e) hereof, and (ii) at the
appropriate payment date, the amount of dividends or other distributions with a
record date after the PhoneTel Effective Time but prior to such surrender and
with a payment date subsequent to such surrender payable with respect to such
whole shares of New Davel Common Stock.

               (d)  All shares of New Davel Common Stock issued upon the
surrender for exchange of PhoneTel Certificates in accordance with the terms of
this Article I (including any cash paid in lieu of fractional shares of New
Davel Common Stock pursuant to this Article I) shall be deemed to have been
issued (and paid) in full satisfaction of all rights pertaining to PhoneTel
Common Stock theretofore represented by such PhoneTel Certificates, subject,
however, to the PhoneTel Surviving Corporation's obligation to pay any dividends
or make any other distributions with a record date prior to the PhoneTel
Effective Time which may have been declared or made by PhoneTel on such shares
of PhoneTel Common Stock which remain unpaid at the PhoneTel Effective Time, and
there shall be no further registration of transfers on the stock transfer books
of the PhoneTel Surviving Corporation of the shares of PhoneTel Common Stock
which were outstanding immediately prior to the PhoneTel Effective Time. If,
after the PhoneTel Effective Time, PhoneTel Certificates are presented to the
PhoneTel Surviving Corporation or the Exchange Agent for any reason, they shall
be canceled and exchanged as provided in this Article I, except as otherwise
provided by law.

               (e)  No certificates or scrip representing fractional shares of
     New Davel Common Stock shall be issued upon the surrender for exchange of
     PhoneTel Certificates, no dividend or distribution of New Davel shall
     relate to such fractional share interests and such fractional share
     interests shall not entitle the owner thereof to vote or to any rights of a
     stockholder of New Davel.

               (i)  New Davel shall pay or cause to be paid to each former
     holder of PhoneTel Common Stock an amount in cash equal to the product
     obtained by multiplying

                                      -5-
<PAGE>
 
     (A) the fractional share interest to which such former holder (after taking
     into account all shares of PhoneTel Common Stock held at the PhoneTel
     Effective Time by such holder) would otherwise be entitled by (B) the Final
     Average Closing Price.

                    (ii)   As soon as practicable after the determination of the
     amount of cash, if any, to be paid to holders of PhoneTel Certificates
     formerly representing PhoneTel Common Stock with respect to any fractional
     share interests, the Exchange Agent shall make available such amounts to
     such holders of PhoneTel Certificates formerly representing shares of
     PhoneTel Common Stock subject to and in accordance with the terms of
     Section 1.03(c) hereof.

               (f)  Any portion of the Exchange Fund which remains undistributed
to the holders of PhoneTel Certificates six months after the Closing Date shall
be delivered to New Davel, upon demand, and any holders of the PhoneTel
Certificates who have not theretofore surrendered their PhoneTel Certificates in
accordance with this Article I shall thereafter look only to New Davel for
payment of their claims for PhoneTel Merger Consideration, any dividends or
distributions with respect to New Davel Common Stock, as applicable, and any
cash in lieu of fractional shares of New Davel Common Stock.

               (g)  None of New Davel, PhoneTel or the Exchange Agent shall be
liable to any person in respect of any shares of New Davel Common Stock, any
dividends or distributions with respect thereto, or any cash in lieu of
fractional shares of New Davel Common Stock, in each case, delivered to a public
official pursuant to any applicable abandoned property, escheat or similar law.
If any PhoneTel Certificate shall not have been surrendered prior to the date on
which any PhoneTel Merger Consideration, any dividends or distributions payable
to the holder of such PhoneTel Certificate or any cash payable to the holder of
such PhoneTel Certificate formerly representing PhoneTel Common Stock pursuant
to this Article I would otherwise escheat to or become the property of any
Governmental Entity, any such PhoneTel Merger Consideration, dividends or
distributions in respect of such PhoneTel Certificate or any such cash shall, to
the extent permitted by applicable law, become the property of the PhoneTel
Surviving Corporation, free and clear of all claims or interest of any person
previously entitled thereto.

               (h)  The Exchange Agent shall invest any cash included in the
PhoneTel Exchange Fund, as directed by New Davel, on a daily basis. Any interest
and other income resulting from such investments shall be paid to New Davel.

               (i)  If any PhoneTel Certificate shall have been lost, stolen or
destroyed, upon the making of an affidavit of that fact by the person claiming
such PhoneTel Certificate to be lost, stolen or destroyed and, if required by
the PhoneTel Surviving Corporation, the posting by such person of a bond in such
reasonable amount as the PhoneTel Surviving Corporation may direct as indemnity
against any claim that may be made against it with respect to such PhoneTel
Certificate, the Exchange Agent shall issue in exchange for such lost, stolen or
destroyed PhoneTel Certificate the PhoneTel Merger Consideration and, if
applicable, any unpaid dividends and distributions on shares of New Davel Common
Stock deliverable in respect thereof and any cash in lieu of any fractional
share, in each case, due to such person pursuant to this Agreement.

                                      -6-
<PAGE>
 
          Section 1.04  Certain PhoneTel Adjustments.  If,  after the date
                        ----------------------------                      
hereof and on or prior to the PhoneTel Effective Time, the outstanding shares of
New Davel Common Stock or PhoneTel Common Stock shall be changed into a
different number, class or series of shares or any other security by reason of
any reclassification, recapitalization, reorganization, merger, business
combination, split-up, stock split, combination or exchange of shares, or any
dividend payable in stock or other securities shall be declared thereon with a
record date within such period, or any similar event shall occur, the PhoneTel
Exchange Ratio (and/or the security or securities to be issued to the holders of
PhoneTel Common Stock) shall be appropriately adjusted to provide the effects
contemplated by this Agreement prior to such reclassification, recapitalization,
reorganization, merger, business combination, split-up, stock split,
combination, exchange or dividend or similar event.

          Section 1.05   PhoneTel Stock Options and Warrants.
                         ----------------------------------- 

               (a)  As of the PhoneTel Effective Time, (i) each outstanding
option to purchase PhoneTel Common Stock (collectively, the "PhoneTel Options"),
                                                             ---------------- 
shall be converted into an option (an "Adjusted PhoneTel Option") to purchase
                                       ------------------------- 
the number of shares of New Davel Common Stock equal to the number of shares of
PhoneTel Common Stock subject to such options immediately prior to the PhoneTel
Effective Time multiplied by the PhoneTel Exchange Ratio (rounded to the nearest
whole number of shares of New Davel Common Stock), at an exercise price per
share equal to the exercise price for each such share of PhoneTel Common Stock
subject to such option divided by the PhoneTel Exchange Ratio (rounded down to
the nearest whole cent), and all references in each such option to PhoneTel
shall be deemed to refer to New Davel, where appropriate; provided, however,
                                                          --------  -------  
that the adjustments provided in this clause (i) with respect to any options
which are "incentive stock options" (as defined in Section 422 of the Code) or
which are described in Section 423 of the Code shall be effected in a manner
consistent with the requirements of Section 424(a) of the Code, (ii) New Davel
shall assume the obligations of PhoneTel under the PhoneTel Options, (iii) each
outstanding warrant to purchase PhoneTel Common Stock (the "PhoneTel Warrants")
                                                            ----------------- 
shall be converted into a warrant (an "Adjusted PhoneTel Warrant") to purchase
                                       ------------------------- 
the number of shares of New Davel Common Stock equal to the number of shares of
PhoneTel Common Stock subject to such PhoneTel Warrants immediately prior to the
PhoneTel Effective Time multiplied by the PhoneTel Exchange Ratio (rounded to
the nearest whole number of shares of New Davel Common Stock), at an exercise
price per share equal to the exercise price for each such share of PhoneTel
Common Stock subject to such PhoneTel Warrant divided by the PhoneTel Exchange
Ratio (rounded to the nearest whole cent), and all references in each such
PhoneTel Warrant to PhoneTel shall be deemed to refer to New Davel, where
appropriate and (iv) New Davel shall assume the obligations of PhoneTel under
the PhoneTel Warrants. The other terms of each Adjusted PhoneTel Option and
Adjusted PhoneTel Warrant, and the plans or agreements under which they were
issued, shall continue to apply in accordance with their terms. The date of
grant of each Adjusted PhoneTel Option and Adjusted PhoneTel Warrant shall be
the date on which the corresponding PhoneTel Option or PhoneTel Warrant was
granted.

               (b)  PhoneTel and New Davel agree that each of the applicable
PhoneTel stock option plans, programs or agreements and each of the applicable
New Davel stock option plans (the "New Davel Stock Option Plans") shall be
                                   ----------------------------
amended, to the extent necessary, to reflect the transactions contemplated by
this Agreement, including, but not limited to the conversion of each

                                      -7-
<PAGE>
 
share of PhoneTel Common Stock held or to be awarded or paid pursuant to such
plans, programs or agreements into shares of New Davel Common Stock on a basis
consistent with the transactions contemplated by this Agreement.  PhoneTel and
New Davel agree to submit such amendments to the New Davel Stock Option Plans or
such PhoneTel plans, programs or agreements to their respective stockholders, if
such submission is determined to be necessary by counsel to PhoneTel or New
Davel after consultation with one another to preserve the benefits of the
PhoneTel Options; provided, however, that such approval shall not be a condition
                  --------  -------                                             
to the consummation of the Transaction.

               (c) New Davel shall (i) reserve for issuance the number of shares
of New Davel Common Stock that shall become subject to the Adjusted PhoneTel
Warrants and the plans, programs and agreements referred to in this Section 1.05
and (ii) issue or cause to be issued the appropriate number of shares of New
Davel Common Stock pursuant to the Adjusted PhoneTel Warrants and applicable
plans, programs and agreements, upon the exercise or maturation of rights
existing thereunder on the PhoneTel Effective Time or thereafter granted or
awarded. No later than the PhoneTel Effective Time, New Davel shall prepare and
file with the Securities and Exchange Commission (the "SEC") a registration
                                                       ---
statement on Form S-8 (or other appropriate form) registering a number of shares
of New Davel Common Stock necessary to fulfill New Davel's obligations under
this Section 1.05. Such registration statement shall be kept effective (and the
current status of the prospectus required thereby shall be maintained), if then
required by the SEC, for at least as long as any Adjusted PhoneTel Options
remain outstanding.

               (d) As soon as practicable after the PhoneTel Effective Time,
New Davel shall deliver to the holders of PhoneTel Options and PhoneTel Warrants
appropriate notices setting forth (i) such holders' rights pursuant to the
respective plans and agreements evidencing the grants of the related PhoneTel
Options and PhoneTel Warrants, (ii) the number of Shares of New Davel Common
Stock for which such holder's Adjusted PhoneTel Options or Adjusted PhoneTel
Warrants are then exercisable and the exercise price therefor, and (iii) that
such PhoneTel Options and PhoneTel Warrants and the related plans, programs and
agreements shall be assumed by New Davel and shall continue in effect on the
same terms and conditions (subject to the adjustments required by this Section
1.05 after giving effect to the PhoneTel Merger).

          Section 1.06   Dissenter's Rights.
                         ------------------ 

               (a) Any PhoneTel Common Stock as to which dissenting
shareholders' rights are perfected under Sections 1701.84 and 1701.85 of the
Ohio Law ("Dissenting Shares") shall not be converted into or represent a right
           -----------------
to receive the PhoneTel Merger Consideration. Holders of Dissenting Shares shall
be entitled only to the rights of a dissenting shareholder under Section 1701.85
of the Ohio Law, and such PhoneTel Common Stock shall be canceled and retired
and shall cease to exist.

               (b) If the rights of any holder who has made a demand for
dissenting shareholders' rights under Section 1701.85 of the Ohio Law are
terminated for any reason other than the purchase by the PhoneTel Surviving
Corporation or New Davel of the PhoneTel Common Stock subject to the demand, the
shares subject to the demand shall be converted into and represent only the
right to receive the PhoneTel Merger Consideration, without interest thereon,
upon surrender of

                                      -8-
<PAGE>
 
the certificates representing the shares, and such shares shall be canceled and
retired and shall cease to exist.

               (c)  PhoneTel shall give Old Davel (i) prompt notice and copies
of any demands for dissenting shareholders' rights under Sections 1701.84 and
1701.85 of the Ohio Law and of any withdrawals of any such demands and (ii) the
right to direct all negotiations and proceedings with respect to any such
demands. PhoneTel shall not, except with the prior written consent of Old Davel
or New Davel, voluntarily make any payment with respect to any such demands or
any offer to settle any such demands and PhoneTel's board of directors shall not
waive any failure by any dissenting shareholder to comply with Section 1701.85
of the Ohio Law.

          Section 1.07   PhoneTel Articles of Incorporation.  The articles of
                         ----------------------------------                  
incorporation of P Sub in effect at the PhoneTel Effective Time shall be the
articles of incorporation of the PhoneTel Surviving Corporation until amended in
accordance with applicable law, except that the name of the PhoneTel Surviving
Corporation shall be "PhoneTel Technologies, Inc."

          Section 1.08   PhoneTel Bylaws.  The code of regulations of P Sub in
                         ---------------                                      
effect at the PhoneTel Effective Time shall be the code of regulations of the
PhoneTel Surviving Corporation until amended in accordance with applicable law.

          Section 1.09   PhoneTel Directors and Officers.  From and after the
                         -------------------------------                     
PhoneTel Effective Time, until successors are duly elected or appointed in
accordance with applicable law, (a) the directors of P Sub at the PhoneTel
Effective Time shall constitute all of the directors of the PhoneTel Surviving
Corporation, and (b) the officers of P Sub at the PhoneTel Effective Time shall
be the officers of the PhoneTel Surviving Corporation.


                                  ARTICLE II

                               THE DAVEL MERGER

          Section 2.01   Effectuation of Davel Merger.
                         ---------------------------- 

               (a) On the terms and subject to the conditions hereof, on the
Closing Date, the parties shall effect the Davel Merger, pursuant to which D Sub
shall be merged with and into Old Davel in accordance with the Illinois Business
Corporation Act ("Illinois Law"), whereupon the separate corporate existence of
                  ------------  
D Sub shall cease, and Old Davel shall be the surviving corporation (the "Davel
                                                                          -----
Surviving Corporation").
- ---------------------

               (b) On the Closing Date, in order to effectuate the Davel Merger,
Old Davel and D Sub shall file articles of merger with the Secretary of State of
the State of Illinois (the "Davel Articles of Merger") and make all other
                            ------------------------  
filings or recordings required by Illinois Law in connection with the Davel
Merger. The Davel Merger shall become effective at such time as the Davel
Articles of Merger are duly filed with the Secretary of State of the State of
Illinois and any additional requirements of Illinois Law are complied with (the
"Davel Effective Time").
 --------------------

                                      -9-
<PAGE>
 
               (c)  From and after the Davel Effective Time, the Davel Surviving
Corporation shall possess all the assets, rights, privileges, powers and
franchises and be subject to all of the liabilities, restrictions, disabilities
and duties of Davel and D Sub, all as provided under Illinois Law.

          Section 2.02   Conversion of Old Davel Shares.
                         ------------------------------ 

               (a)  At the Davel Effective Time and by virtue of the Davel
Merger and without any action on the part of the holders thereof:

                    (i)   each share of common stock, no par value per share, of
     Old Davel (including each attached Old Davel Right, "the Old Davel Common
                                                          -------------------- 
     Stock") held by Old Davel as treasury stock, or owned by PhoneTel or any
     -----
     PhoneTel Subsidiary, if any, immediately prior to the Davel Effective Time
     shall be canceled, and no payment shall be made with respect thereto;
     provided, however, that any shares of Old Davel Common Stock as to which
     --------  -------
     Old Davel or any Davel Subsidiary is or may be required to act as a
     fiduciary or in a similar capacity shall not be canceled but, instead,
     shall be treated as set forth in Section 2.02(a)(iv) below;

                    (ii)  each share of capital stock of D Sub outstanding
     immediately prior to the Davel Effective Time shall be converted into and
     become one share of capital stock of the Davel Surviving Corporation with
     the same rights and privileges as the shares so converted and shall
     constitute the only outstanding shares of capital stock of the Davel
     Surviving Corporation;

                    (iii) each share of capital stock of New Davel outstanding
     immediately prior to the Davel Effective Time shall be canceled and cease
     to exist, and no payment shall be made with respect thereto; and

                    (iv)  subject to Section 2.06 hereof, each share of Old
     Davel Common Stock, outstanding immediately prior to the Davel Effective
     Time shall, except as otherwise provided in clause (i) of this subsection,
     be converted on a one-for-one basis (the "Davel Exchange Ratio") into the
                                               --------------------
     right to receive one fully paid and nonassessable share of New Davel Common
     Stock (the "Davel Merger Consideration"). As of the Davel Effective Time,
                 --------------------------
     all such shares of Old Davel Common Stock shall no longer be outstanding
     and shall automatically be canceled and retired and shall cease to exist,
     and each holder of a certificate representing any such Old Davel Common
     Stock shall cease to have any rights with respect thereto, except the right
     to receive the Davel Merger Consideration to be issued or paid in
     consideration therefor upon surrender of such certificate in accordance
     with Section 2.03 hereof, without interest. As used herein, "Old Davel
                                                                  ---------
     Rights" shall mean the common stock purchase rights issued pursuant to the
     ------ 
     Rights Agreement, dated as of April 22, 1998, between Old Davel and
     ChaseMellon Shareholder Services, L.L.C.

                                      -10-
<PAGE>
 
          Section 2.03  Exchange of Old Davel Shares.
                        ---------------------------- 
               (a) Prior to the Davel Effective Time, New Davel shall enter into
an agreement with the Exchange Agent, which shall provide that New Davel shall
deposit with the Exchange Agent prior to the Davel Effective Time, for the
benefit of the holders of shares of Old Davel Common Stock, for exchange in
accordance with this Article II, through the Exchange Agent, certificates
representing the shares of New Davel Common Stock issuable pursuant to Section
2.02 hereof in exchange for outstanding shares of Old Davel Common Stock (such
shares of New Davel Common Stock, together with any dividends or distributions
with respect thereto payable to such holder in accordance with Section 2.03(c)
hereof being herein referred to as the "Davel Exchange Fund").
                                        -------------------

               (b) As soon as reasonably practicable after the Davel Effective
Time, the Exchange Agent shall mail to each holder of record of a certificate or
certificates which immediately prior to the Davel Effective Time represented
outstanding shares of Old Davel Common Stock (the "Old Davel Certificates")
                                                   ----------------------
whose shares of Old Davel Common Stock were converted into the right to receive
the Davel Merger Consideration pursuant to Section 2.02 hereof, (i) a letter of
transmittal (which shall specify that delivery shall be effected, and risk of
loss and title to the Old Davel Certificates shall pass, only upon delivery of
the Old Davel Certificates to the Exchange Agent and shall be in such form and
have such other provisions typical in transactions of this type as New Davel may
reasonably specify) and (ii) instructions for use in surrendering the Old Davel
Certificates in exchange for the Davel Merger Consideration, as applicable. Upon
surrender of an Old Davel Certificate for cancellation to the Exchange Agent,
together with such letter of transmittal, duly executed, and such other
documents as may reasonably be required by the Exchange Agent, the holder of
such Old Davel Certificate shall be entitled to receive in exchange therefor a
certificate representing that number of shares of New Davel Common Stock which
such holder has the right to receive pursuant to the provisions of this Article
II, any dividends or other distributions with respect thereto payable to such
holder in accordance with Section 2.03(c) hereof, and the Old Davel Certificate
so surrendered shall forthwith be canceled. In the event of a transfer of
ownership of shares of Old Davel Common Stock which is not registered in the
transfer records of Old Davel, a certificate representing the proper number of
shares of New Davel Common Stock may be issued to a person other than the person
in whose name the Old Davel Certificate so surrendered is registered if such Old
Davel Certificate is properly endorsed or otherwise in proper form for transfer
and the person requesting such issuance pays any transfer or other taxes
required by reason of the issuance of shares of New Davel Common Stock to a
person other than the registered holder of such Old Davel Certificate or
establishes to the satisfaction of New Davel that such tax has been paid or is
not applicable. Until surrendered as contemplated by this Section 2.03, each Old
Davel Certificate shall be deemed at any time after the Davel Effective Time to
represent only the right to receive upon such surrender that number of shares of
New Davel Common Stock which the holder thereof has the right to receive
pursuant to the provisions of this Article II and any dividends or other
distributions payable to the holder thereof in accordance with Section 2.03(c)
hereof. No interest shall be paid or shall accrue on any cash payable to holders
of Old Davel Certificates pursuant to the provisions of this Article II.

               (c)  No dividends or other distributions with respect to Old
Davel Common Stock with a record date after the Davel Effective Time shall be
paid to the holder of any

                                      -11-
<PAGE>
 
unsurrendered Old Davel Certificate with respect to the shares of Old Davel
Common Stock represented thereby, and all such dividends and other distributions
shall be paid by New Davel to the Exchange Agent and shall be included in the
Davel Exchange Fund, in each case, until the surrender of such Old Davel
Certificate in accordance with this Article II.  Subject to the effect of
applicable escheat or similar laws, following surrender of any such Old Davel
Certificate, there shall be paid to the holder of the certificate representing
shares of New Davel Common Stock issued in exchange therefor, without interest,
(i) at the time of such surrender, the amount of dividends or other
distributions with a record date after the Davel Effective Time theretofore paid
with respect to such whole shares of New Davel Common Stock, and (ii) at the
appropriate payment date, the amount of dividends or other distributions with a
record date after the Davel Effective Time but prior to such surrender and with
a payment date subsequent to such surrender payable with respect to such whole
shares of New Davel Common Stock.

               (d)  All shares of New Davel Common Stock issued upon the
surrender for exchange of Old Davel Certificates in accordance with the terms of
this Article II shall be deemed to have been issued (and paid) in full
satisfaction of all rights pertaining to the Old Davel Common Stock theretofore
represented by such Old Davel Certificates, subject, however, to the Davel
Surviving Corporation's obligation to pay any dividends or make any other
distributions with a record date prior to the Davel Effective Time which may
have been declared or made by New Davel on such shares of Old Davel Common Stock
which remain unpaid at the Davel Effective Time, and there shall be no further
registration of transfers on the stock transfer books of the Davel Surviving
Corporation of the shares of Old Davel Common Stock which were outstanding
immediately prior to the Davel Effective Time. If, after the Davel Effective
Time, Old Davel Certificates are presented to the Davel Surviving Corporation or
the Exchange Agent for any reason, they shall be canceled and exchanged as
provided in this Article II, except as otherwise provided by law.

               (e)  Any portion of the Davel Exchange Fund which remains
undistributed to the holders of the Old Davel Certificates six months after the
Closing Date shall be delivered to New Davel, upon demand, and any holders of
the Old Davel Certificates who have not theretofore surrendered their Old Davel
Certificates in accordance with this Article II shall thereafter look only to
New Davel for payment of their claims for Davel Merger Consideration and any
dividends or distributions with respect to New Davel Common Stock, as
applicable.

               (f)  None of New Davel, D Sub or the Exchange Agent shall be
liable to any person in respect of any shares of New Davel Common Stock any
dividends or distributions with respect thereto, in each case, delivered to a
public official pursuant to any applicable abandoned property, escheat or
similar law. If any Old Davel Certificate shall not have been surrendered prior
to the date on which any Davel Merger Consideration, any dividends or
distributions payable to the holder of such Old Davel Certificate or any cash
payable to the holder of such Old Davel Certificate formerly representing Old
Davel Common Stock pursuant to this Article II would otherwise escheat to or
become the property of any Governmental Entity, any such Davel Merger
Consideration, dividends or distributions in respect of such Old Davel
Certificate or such cash shall, to the extent permitted by applicable law,
become the property of the Davel Surviving Corporation, free and clear of all
claims or interest of any person previously entitled thereto.

                                      -12-
<PAGE>
 
               (g)  The Exchange Agent shall invest any cash included in the
Davel Exchange Fund, as directed by New Davel, on a daily basis. Any interest
and other income resulting from such investments shall be paid to New Davel.

               (h)  If any Old Davel Certificate shall have been lost, stolen or
destroyed, upon the making of an affidavit of that fact by the person claiming
such Old Davel Certificate to be lost, stolen or destroyed and, if required by
the Davel Surviving Corporation, the posting by such person of a bond in such
reasonable amount as the Davel Surviving Corporation may direct as indemnity
against any claim that may be made against it with respect to such Old Davel
Certificate, the Exchange Agent shall issue in exchange for such lost, stolen or
destroyed Old Davel Certificate the Davel Merger Consideration and, if
applicable, any unpaid dividends and distributions on shares of New Davel Common
Stock deliverable in respect thereof, in each case, due to such person pursuant
to this Agreement.

          Section 2.04   Certain Davel Adjustments.  If after the date hereof
                         -------------------------                           
and on or prior to the Davel Effective Time the outstanding shares of New Davel
Common Stock or Old Davel Common Stock shall be changed into a different number,
class or series of shares or any other security by reason of any
reclassification, recapitalization, reorganization, merger, business
combination, split-up, stock split, combination or exchange of shares, or any
dividend payable in stock or other securities shall be declared thereon with a
record date within such period, or any similar event shall occur, the Davel
Exchange Ratio (and/or the security or securities to be issued to the holders of
Old Davel Common Stock) shall be appropriately adjusted to provide the effects
contemplated by this Agreement prior to such reclassification, recapitalization,
reorganization, merger, business combination, split-up, stock split,
combination, exchange or dividend or similar event.

          Section 2.05   Davel Stock Options and Warrants.
                         -------------------------------- 

               (a)  As of the Davel Effective Time, (i) each outstanding option
to purchase Old Davel Common Stock (collectively, the "Old Davel Options"),
                                                       -----------------
shall be converted into an option (an "Adjusted Old Davel Option") to purchase
                                       ------------------------- 
the same number of shares of New Davel Common Stock at an exercise price per
share equal to the exercise price for each such share of Old Davel Common Stock
subject to such option, and all references in each such option to Old Davel
shall be deemed to refer to New Davel, where appropriate, (ii) New Davel shall
assume the obligations of Old Davel under the Old Davel Options, (iii) each
outstanding warrant to purchase Old Davel Common Stock (the "Old Davel
                                                             ---------    
Warrants") shall be converted into a warrant (an "Adjusted Old Davel Warrant")
- --------                                          --------------------------
to purchase the same number of shares of New Davel Common Stock, at an exercise
price per share equal to the exercise price for each such share of Old Davel
Common Stock subject to such Old Davel Warrant, and all references in each such
Old Davel Warrant to Old Davel shall be deemed to refer to New Davel, where
appropriate and (iv) New Davel shall assume the obligations of Old Davel under
the Old Davel Warrants. The other terms of each Adjusted Old Davel Option and
Adjusted Old Davel Warrant, and the plans or agreements under which they were
issued, shall continue to apply in accordance with their terms. The date of
grant of each Adjusted Old Davel Option and Adjusted Old Davel Warrant shall be
the date on which the corresponding option or warrant was granted.

                                      -13-
<PAGE>
 
               (b)  Old Davel and New Davel agree that each of the applicable
Old Davel stock option plans, programs or agreements and each of the applicable
New Davel Stock Option Plans shall be amended, to the extent necessary, to
reflect the transactions contemplated by this Agreement, including, but not
limited to the conversion of each share of Old Davel Common Stock held or to be
awarded or paid pursuant to such plans, programs or agreements into shares of
New Davel Common Stock on a basis consistent with the transactions contemplated
by this Agreement. Old Davel and New Davel agree to submit such amendments to
the New Davel Stock Option Plans or such Old Davel plans, programs or agreements
to their respective stockholders, if such submission is determined to be
necessary by counsel to Old Davel or New Davel after consultation with one
another; provided, however, that such approval shall not be a condition to the
         --------  -------
consummation of the Transaction.

               (c)  New Davel shall (i) reserve for issuance the number of
shares of New Davel Common Stock that shall become subject to the plans,
programs and agreements referred to in this Section 2.05 and (ii) issue or cause
to be issued the appropriate number of shares of New Davel Common Stock pursuant
to applicable plans, programs and agreements, upon the exercise or maturation of
rights existing thereunder on the Davel Effective Time or thereafter granted or
awarded. No later than the Davel Effective Time, New Davel shall prepare and
file with the SEC a registration statement on Form S-8 (or other appropriate
form) registering a number of shares of New Davel Common Stock necessary to
fulfill New Davel's obligations under this Section 2.05. Such registration
statement shall be kept effective (and the current status of the prospectus
required thereby shall be maintained), if then required by the SEC, for at least
as long as any Adjusted Old Davel Options remain outstanding.

               (d)  As soon as practicable after the Davel Effective Time, New
Davel shall deliver to the holders of Old Davel Options and Old Davel Warrants
appropriate notices setting forth (i) such holders' rights pursuant to the
respective plans and agreements evidencing the grants of the related Old Davel
Options and Old Davel Warrants, (ii) the number of shares of New Davel Common
Stock for which such holder's Adjusted Old Davel Options or Adjusted Old Davel
Warrants are then exercisable and the exercise price therefor and (iii) that
such Old Davel Options and Old Davel Warrants and the related plans, programs
and agreements shall be assumed by New Davel and shall continue in effect on the
same terms and conditions (subject to the adjustments required by this Section
2.05 after giving effect to the Davel Merger).

          Section 2.06   Dissenters' Rights.
                         ------------------ 

               (a) Any Old Davel Common Stock as to which rights are perfected
under Sections 5/11.65 and 5/11.70 of the Illinois Law ("Davel Dissenting
                                                         ----------------   
Shares") shall not be converted into or represent a right to receive the Old
- ------
Davel Merger Consideration. Holders of Davel Dissenting Shares shall be entitled
only to the rights of a dissenting shareholder under Section 5/11.70 of the
Illinois Law, and such Old Davel Common Stock shall be canceled and retired and
shall cease to exist.

                                      -14-
<PAGE>
 
               (b)  If the rights of any holder who has made a demand for
    dissenters' rights under Section 5/11.70 of the Illinois Law are terminated
    for any reason other than the purchase by the Davel Surviving Corporation or
    New Davel of the Old Davel Common Stock subject to the demand, the shares
    subject to the demand shall be converted into and represent only the right
    to receive the Davel Merger Consideration, without interest thereon, upon
    surrender of the certificates representing the shares, and such shares shall
    be canceled and retired and shall cease to exist.

          Section 2.07   Davel Articles of Incorporation.  The articles of
                         -------------------------------                  
incorporation of D Sub in effect at the Davel Effective Time shall be the
articles of incorporation of the Davel Surviving Corporation until amended in
accordance with applicable law, except that the name of the Davel Surviving
Corporation shall be "DCG, Inc." or such other name as Old Davel shall
                      ---------                                       
determine.

          Section 2.08   Davel Bylaws.  The bylaws of D Sub in effect at the
                         ------------                                       
Davel Effective Time shall be the bylaws of the Davel Surviving Corporation
until amended in accordance with applicable law.

          Section 2.09   Davel Directors and Officers.  From and after the Davel
                         ----------------------------                           
Effective Time, until successors are duly elected or appointed in accordance
with applicable law, (a) the directors of D Sub at the Davel Effective Time
shall constitute all of the directors of the Davel Surviving Corporation, and
(b) the officers of D Sub at the Davel Effective Time shall be the officers of
the Davel Surviving Corporation.


                                  ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF PHONETEL

       PhoneTel represents and warrants to Old Davel and New Davel that:

          Section 3.01   Corporate Organization.  PhoneTel is a corporation duly
                         ----------------------                                 
organized, validly existing and in good standing under the laws of the State of
Ohio, and has all requisite corporate power and authority to own, operate and
lease its properties and assets and to carry on its business as it is now being
conducted.  Except as set forth in Section 3.01 of the disclosure letter
delivered by PhoneTel to Old Davel and New Davel concurrently with the execution
of this Agreement (the "PhoneTel Disclosure Letter"), PhoneTel is duly qualified
                        --------------------------                              
to do business and is in good standing in each jurisdiction in which the
character of its properties owned or held under lease or the nature of its
activities makes such qualification necessary, except where the failure to be so
qualified or to be in good standing would not, individually or in the aggregate,
have a PhoneTel Material Adverse Effect.  As used herein, "PhoneTel Material
                                                           -----------------
Adverse Effect" shall mean a material adverse effect on the business, assets,
- --------------                                                               
condition (financial or otherwise) or results of operations of PhoneTel and the
PhoneTel Subsidiaries taken as a whole, except for the impact of any order or
determination by the Federal Communications Commission or Federal appellate
court concerning compensation paid by interexchange carriers and local exchange
carriers to payphone service providers as provided in the Federal Communications
Commission CC Docket No. 96-128, Implementation of the Pay Telephone
Reclassification and Compensation Provisions of the Telecommunications Act of
1996.

                                      -15-
<PAGE>
 
          Section 3.02   Authorization.  PhoneTel has the necessary corporate
                         -------------                                       
power and authority to enter into this Agreement and, subject to the approval of
this Agreement and the PhoneTel Merger by the affirmative vote of the holders of
a majority of the outstanding shares of PhoneTel Common Stock at the PhoneTel
Stockholders Meeting ("PhoneTel Stockholder Approval"), to carry out its
                       -----------------------------                    
obligations hereunder.  The execution and delivery of this Agreement by
PhoneTel, the performance by PhoneTel of its obligations hereunder and the
consummation by PhoneTel of the Transaction have been duly and validly
authorized by PhoneTel's Board of Directors, have been unanimously approved by
the PhoneTel Board of Directors prior to either Old Davel or New Davel becoming
an "interested shareholder" (as defined in Section 1704.01(C)(8) of Ohio Law)
and have been approved by PhoneTel's Board of Directors as otherwise required by
PhoneTel's articles of incorporation.  Except for PhoneTel Stockholder Approval,
no other corporate proceeding on the part of PhoneTel is necessary for the
execution and delivery of this Agreement by PhoneTel, the performance by
PhoneTel of its obligations hereunder or the consummation by PhoneTel of the
Transaction.  This Agreement has been duly and validly executed and delivered by
PhoneTel and is a legal, valid and binding obligation of PhoneTel, enforceable
against PhoneTel in accordance with its terms, except as such enforceability may
be limited by applicable bankruptcy, insolvency, moratorium, reorganization or
other laws affecting creditors' rights generally or by the availability of
equitable remedies generally.

          Section 3.03   Capital Stock.  As of June 1, 1998, the authorized
                         -------------                                     
capital stock of PhoneTel consisted of: (a) 50,000,000 shares of PhoneTel Common
Stock, of which 16,641,505 shares were issued and outstanding and no shares were
held in PhoneTel's treasury and (b) 10,000,000 shares of preferred stock,
without par value, consisting of (i) 200,000 shares designated as 14%
Convertible Cumulative Redeemable Preferred Stock (the "PIK Preferred Stock"),
                                                        -------------------   
of which 142,982 shares were issued and outstanding, (ii) 250,000 shares
designated as Series A Special Convertible Preferred ("Series A Preferred
                                                       ------------------
Stock"), of which no shares were issued and outstanding, and (iii) 250,000
shares designated as Series B Special Convertible Preferred ("Series B Preferred
                                                              ------------------
Stock"), of which no shares were issued and outstanding (the PIK Preferred
- -----                                                                     
Stock, the Series A Preferred Stock and the Series B Preferred Stock sometimes
being collectively referred to herein as the "Preferred Stock").  All of the
                                              ---------------               
outstanding shares of capital stock of PhoneTel have been validly issued and are
fully paid, nonassessable and free of preemptive rights with no personal
liability attaching to the ownership thereof.  As of June 1, 1998, except for
(i) the Preferred Stock, (ii) options to acquire up to 1,978,313 shares of
PhoneTel Common Stock and (iii) warrants to acquire up to 5,284,011 shares of
PhoneTel Common Stock, there were no outstanding subscriptions, options,
warrants, rights, contracts or other arrangements or commitments obligating
PhoneTel to issue any shares of its capital stock or any securities convertible
into or exchangeable for shares of its capital stock.

          Section 3.04   Subsidiaries.  Section 3.04 of the PhoneTel Disclosure
                         ------------                                          
Letter lists all direct and indirect subsidiaries of PhoneTel (each, a "PhoneTel
                                                                        --------
Subsidiary" and collectively, the "PhoneTel Subsidiaries").  Except for the
- ----------                         ---------------------                   
PhoneTel Subsidiaries and as listed in Section 3.04 of the PhoneTel Disclosure
Letter, PhoneTel does not directly or indirectly own any interest in any other
corporation, partnership, joint venture or other business association or entity.
Each PhoneTel Subsidiary is a corporation duly organized, validly existing and
in good standing under the laws of the jurisdiction of its incorporation and has
all requisite corporate power and authority to own,

                                      -16-
<PAGE>
 
operate and lease its properties and assets and to carry on its business as it
is now being conducted. Except as set forth in Section 3.04 of the PhoneTel
Disclosure Letter, each PhoneTel Subsidiary is duly qualified to do business and
is in good standing in each jurisdiction in which the character of its
properties owned or held under lease or the nature of its activities makes such
qualification necessary, except where the failure to be so qualified or to be in
good standing would not, individually or in the aggregate, be reasonably
expected to have a PhoneTel Material Adverse Effect. Except as set forth in
Section 3.04 of the PhoneTel Disclosure Letter, all outstanding shares of
capital stock of each PhoneTel Subsidiary are validly issued, fully paid and
nonassessable and are owned by PhoneTel or another PhoneTel Subsidiary free and
clear of any liens, claims or encumbrances.

          Section 3.05   Consents and Approvals; No Violation.  Except as set
                         ------------------------------------                
forth in Section 3.05 of the PhoneTel Disclosure Letter and except for (a)
applicable requirements of the Securities Exchange Act of 1934, as amended, and
the rules and regulations thereunder (the "Exchange Act"), including the filing
                                           ------------                        
with and clearing by the SEC of a joint proxy statement relating to the PhoneTel
Stockholders Meeting and the Davel Stockholders Meeting, as amended or
supplemented from time to time (the "Proxy Statement"), (b) the filing of a 
                                     ---------------
Pre-Merger Notification and Report Form by PhoneTel and the expiration or
termination of the waiting period under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR Act"), (c) the filing of the
                                           -------
PhoneTel Certificate of Merger as required by Ohio Law, (d) such filings and
consents as may be required under any environmental law pertaining to any
notification, disclosure or required approval triggered by the Transaction, (e)
filings with the American Stock Exchange and the SEC with respect to the
delisting and deregistration of the shares of PhoneTel Common Stock and (f) such
consents, approvals, orders, authorizations, notifications, registrations,
declarations and filings as may be required by state public utility or public
service commissions or under the corporation, takeover or blue sky laws of
various states, no filing with or prior notice to, and no permit, authorization,
consent or approval of, any Federal, state, local, foreign or other governmental
department, commission, board, bureau, agency or instrumentality (each, a
"Governmental Entity") is necessary for the consummation by PhoneTel of the
 -------------------
Transaction. Neither the execution and delivery of this Agreement by PhoneTel
nor the consummation by PhoneTel of the Transaction, nor compliance by PhoneTel
with any of the provisions hereof, will (i) conflict with or result in any
violation of any provision of the articles of incorporation or bylaws, or
comparable organizational documents, of PhoneTel or any PhoneTel Subsidiary,
(ii) except as set forth in Section 3.05 of the PhoneTel Disclosure Letter,
result in a violation or breach of, or constitute (with or without due notice or
lapse of time or both) a default (or give rise to any right of termination,
cancellation or acceleration) under, any note, bond, mortgage, indenture,
license, agreement or other instrument or obligation to which PhoneTel or any
PhoneTel Subsidiary is a party or by which any of them or any of their
properties or assets may be bound, or, (iii) subject to the governmental filings
and other matters referred to above in this Section 3.05, violate any Federal,
state, local or foreign order, writ, injunction, decree, statute, rule or
regulation applicable to PhoneTel, any PhoneTel Subsidiary or any of their
properties or assets, excluding from the foregoing clauses (ii) and (iii)
violations, breaches or defaults which, either individually or in the aggregate,
would not reasonably be expected to have a PhoneTel Material Adverse Effect or
impair materially PhoneTel's ability to perform its obligations hereunder or
prevent or materially delay the consummation of the Transaction. The Ohio
Control Share Acquisition Act (Section 1701.831 et seq. of the Ohio Law) does
                                                -- --- 
                                                
not apply to the execution and delivery of this Agreement or the consummation of
the Transaction.

                                      -17-
<PAGE>
 
          Section 3.06   SEC Reports and Financial Statements.
                         ------------------------------------ 

               (a) Since December 31, 1994, PhoneTel has filed all required
forms, reports and documents with the SEC required to be filed by it pursuant to
the Securities Act of 1933, as amended, and the rules and regulations
promulgated thereunder (the "Securities Act") and the Exchange Act (hereinafter
                             --------------   
collectively referred to as the "PhoneTel Reports"), all of which have complied
                                 ---------------- 
in all material respects with all applicable requirements of the Securities Act
and the Exchange Act.

               (b) None of the PhoneTel Reports, including, without limitation,
any financial statements or schedules included therein, at the time filed,
contained any untrue statement of a material fact or omitted to state a 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.

               (c) The consolidated balance sheets and the related consolidated
statements of operations, stockholders' equity and changes in financial position
(including, without limitation, the related notes thereto) of PhoneTel and the
PhoneTel Subsidiaries included in the financial statements contained in
PhoneTel's Annual Report on Form 10-K for the year ended December 31, 1997 (the
"PhoneTel 10-K") and in PhoneTel's Quarterly Report on Form 10-Q for the quarter
 -------------                                                                  
ended March 31, 1998 (the "PhoneTel 10-Q"), present fairly the consolidated
                           -------------                                   
financial position of PhoneTel and the PhoneTel Subsidiaries as of their
respective dates, and the results of consolidated operations and changes in
consolidated financial position for the periods then ended, all in conformity
with generally accepted accounting principles ("GAAP") applied on a consistent
                                                ----                          
basis, except as otherwise noted therein, and subject in the case of unaudited
interim financial statements to normal year-end audit adjustments and the
absence of footnotes.

          Section 3.07   Absence of Undisclosed Liabilities.  Neither PhoneTel
                         ----------------------------------                   
nor any PhoneTel Subsidiary has any liabilities (whether absolute, accrued or
contingent), except: (a) liabilities, obligations or contingencies that are
accrued and reserved against in the consolidated balance sheet of PhoneTel and
the PhoneTel Subsidiaries as of December 31, 1997 or reflected in the notes
thereto, (b) liabilities incurred since December 31, 1997 in the ordinary course
of business, (c) liabilities disclosed in Section 3.07 of the PhoneTel
Disclosure Letter, or (d) any liabilities which, individually or in the
aggregate, have not had, and would not reasonably be expected to have, a
PhoneTel Material Adverse Effect.

          Section 3.08   Changes.  Since the date of the PhoneTel 10-K, and
                         -------                                           
except as set forth in the PhoneTel Reports filed prior to the date of this
Agreement (as amended to the date hereof, the "Filed PhoneTel Reports"), and
                                               ----------------------       
except as otherwise disclosed in Section 3.08 of the PhoneTel Disclosure Letter
or as otherwise provided by this Agreement:

               (a) there has been no Material Adverse Effect;

               (b) except as permitted by this Agreement, there has been no
direct or indirect redemption, purchase or other acquisition of any shares of
PhoneTel's capital stock, or any

                                      -18-
<PAGE>
 
declaration, setting aside or payment of any dividend or other distribution by
PhoneTel in respect of PhoneTel's capital stock, or any issuance of any shares
of capital stock of PhoneTel (other than pursuant to the exercise of options and
warrants pursuant to their terms), or any granting to any person of any option
to purchase or other right to acquire shares of capital stock of PhoneTel or any
stock split or other change in PhoneTel's capitalization;

               (c) neither PhoneTel nor any PhoneTel Subsidiary has entered into
or agreed to enter into any new or amended contract with any labor unions
representing employees of PhoneTel or any PhoneTel Subsidiary;

               (d) neither PhoneTel nor any PhoneTel Subsidiary has entered into
or agreed to enter into any new or amended contract with any of the officers
thereof or otherwise increased the compensation payable to the officers or
directors of any such entity;

               (e) neither PhoneTel nor any PhoneTel Subsidiary has (i) entered
into or amended any bonus, incentive compensation, deferred compensation, profit
sharing, retirement, pension, group insurance or other benefit plan except as
required by law or regulations and except for the Executive Agreements or (ii)
made any contribution to any such plan except for contributions specifically
required by law or pursuant to the terms of such plans; and

               (f) neither PhoneTel nor any PhoneTel Subsidiary has made any
change in accounting methods, principles or practices materially and adversely
affecting its assets, liabilities or business, except in accordance with GAAP.

          Section 3.09   Investigations; Litigation.
                         -------------------------- 

               (a) Except as described in Section 3.09(a) of the PhoneTel
Disclosure Letter and other than reviews pursuant to the HSR Act, there are no
pending or, to the knowledge of PhoneTel, threatened investigations, reviews or
inquiries by any Governmental Entity with respect to PhoneTel or any PhoneTel
Subsidiary or with respect to the activities of any officer, director or, to the
knowledge of PhoneTel, employee of PhoneTel (an "Investigation"), other than
                                                 -------------
Investigations which, if the resolution thereof were adverse, would not,
individually or in the aggregate, reasonably be expected to have a PhoneTel
Material Adverse Effect. For the purpose of this Agreement, "knowledge of
                                                             ------------
PhoneTel" shall be deemed to mean the actual knowledge, after reasonable
- --------
inquiry, of any executive officer of PhoneTel.

               (b) Except as described in Section 3.09(b) of the PhoneTel
Disclosure Letter, (i) there are no actions or proceedings pending or, to the
knowledge of PhoneTel, threatened against PhoneTel or any PhoneTel Subsidiary
before any court or before any administrative agency or administrative officer
or executive, whether Federal, state, local or foreign, which seek to enjoin the
PhoneTel Merger or the Davel Merger or which, if adversely determined, would,
individually or in the aggregate, reasonably be expected to have a PhoneTel
Material Adverse Effect, (ii) there are no outstanding domestic or foreign
judgments, decrees or orders against PhoneTel or any PhoneTel Subsidiary that,
individually or in the aggregate, would reasonably be expected to have a
PhoneTel Material Adverse Effect, (iii) neither PhoneTel nor any PhoneTel
Subsidiary is in violation of, and none of them has received any claim or notice
that it is in violation of, any Federal, state,

                                      -19-
<PAGE>
 
local or foreign laws, statutes, rules, regulations or orders promulgated or
judgments entered by any Governmental Entity, which violations, individually or
in the aggregate, would reasonably be expected to have a PhoneTel Material
Adverse Effect; and (iv) there are no actions pending or, to the knowledge of
PhoneTel, threatened against the directors or any director of PhoneTel alleging
a breach of such directors' or director's fiduciary duties (except such actions
which may arise as a result of the Transaction).

          Section 3.10   Contracts and Commitments.
                         ------------------------- 

               (a) Except as are attached as exhibits to any Filed PhoneTel
Report or as set forth in Section 3.10 of the PhoneTel Disclosure Letter,
PhoneTel is not, nor is any PhoneTel Subsidiary, with respect to its business, a
party to any contracts or agreements that are material to the business,
properties, assets or financial condition of PhoneTel and the PhoneTel
Subsidiaries, taken as a whole (together with all amendments, exhibits,
attachments, waivers or other changes thereto, the "Contracts").
                                                    ---------   

               (b) PhoneTel has supplied or made available to Old Davel valid
copies of all Contracts.

               (c) Since January 1, 1998, PhoneTel has not altered its payment
practices with regard to amounts payable to local exchange carriers in respect
of payphone services or with regard to amounts payable to Location Owners in
respect of commissions, which alteration would result in a material breach of
the contractual duties of PhoneTel to such local exchange carriers in the
aggregate or to such Location Owners in the aggregate.

          Section 3.11   Environmental Matters.  Except as described in the
                         ---------------------                             
Filed PhoneTel Reports, (a) PhoneTel and each of the PhoneTel Subsidiaries are
in compliance with all applicable Federal, state, local and foreign laws and
regulations and all judicial and administrative orders and determinations
relating to pollution or protection of the environment or of human health
(including, without limitation, ambient air, surface water, ground water, land
surface or subsurface strata) (collectively, "Environmental Laws"), except for
                                              ------------------              
non-compliance that would not, individually or in the aggregate, reasonably be
expected to have a PhoneTel Material Adverse Effect, which compliance includes,
but is not limited to, the possession by PhoneTel and each of the PhoneTel
Subsidiaries of permits and other governmental authorizations required under
applicable Environmental Laws, and compliance with the terms and conditions
thereof; (b) neither PhoneTel nor any of the PhoneTel Subsidiaries has received
written notice of, or, to the knowledge of PhoneTel, is the subject of, any
actions, causes of action, claims, investigations, demands or notices by any
person alleging liability under or non-compliance with any Environmental Law
that would, individually or in the aggregate, reasonably be expected to have a
PhoneTel Material Adverse Effect; and (c) there has not been by PhoneTel or any
of the PhoneTel Subsidiaries any treatment, storage, disposal or release of any
hazardous or toxic material, substance or waste or of petroleum, or any
fractions or by-products thereof, at any of their current or, to the knowledge
of PhoneTel, former properties or facilities or any current or, to the knowledge
of PhoneTel, former offsite properties and facilities used in the business of
PhoneTel or the PhoneTel Subsidiaries (in each case, other than properties or
facilities where payphones are located pursuant to Site Location Agreements with
location providers ("Location Owners")) in a manner or at levels that require or
                     ---------------                                            
is reasonably likely

                                      -20-
<PAGE>
 
to require investigation, removal or remediation under Environmental Laws that
would, either individually or in the aggregate, reasonably be expected to have a
PhoneTel Material Adverse Effect.

          Section 3.12   Taxes.    Each of PhoneTel and the PhoneTel
                         -----                                      
Subsidiaries has filed all tax returns and reports required to be filed by it
and all such returns and reports are complete and correct in all materials
respects, or requests for extensions to file such returns or reports have been
timely filed, granted and have not expired, except to the extent that such
failures to file, to be complete or correct or to have extensions granted that
remain in effect individually or in the aggregate would not reasonably be
expected to have a PhoneTel Material Adverse Effect.  Each of PhoneTel and the
PhoneTel Subsidiaries has timely paid (or PhoneTel has paid on its behalf) all
taxes that have become due and payable, except to the extent the failure to pay
such taxes individually or in the aggregate would not reasonably be expected to
have a PhoneTel Material Adverse Effect, and the most recent financial
statements contained in the PhoneTel Reports reflect an adequate reserve in
accordance with GAAP for all taxes payable by PhoneTel and the PhoneTel
Subsidiaries for all taxable periods and portions thereof accrued through the
date of such financial statements.

               (a) No deficiencies for any taxes have been proposed, asserted or
assessed against PhoneTel or any of the PhoneTel Subsidiaries that are not
adequately reserved for, except for deficiencies that individually or in the
aggregate would not reasonably be expected to have a PhoneTel Material Adverse
Effect.  There is no action, suit, taxing authority proceeding or audit now in
progress, pending, or, to the knowledge of PhoneTel, threatened against or with
respect to PhoneTel or any of the PhoneTel Subsidiaries.

          Section 3.13   Employment Agreements.  Except as disclosed in Section
                         ---------------------                                 
3.13 of the PhoneTel Disclosure Letter and except for the Executive Agreements,
there are no employment, consulting, severance or indemnification contracts or
agreements between PhoneTel or any PhoneTel Subsidiary, on the one hand, and any
directors, officers or other employees of PhoneTel or any PhoneTel Subsidiary,
on the other hand.

          Section 3.14   Change of Control Provisions.  Except as disclosed in
                         ----------------------------                         
Section 3.14 of the PhoneTel Disclosure Letter, none of the contracts or
agreements set forth in Section 3.13 of the PhoneTel Disclosure Letter and none
of PhoneTel's or any PhoneTel Subsidiary's employee benefit plans, programs or
arrangements contains any provision that would become operative as the result of
a change of control of PhoneTel or that would become operative as a result of
the PhoneTel Merger or the Transaction.

          Section 3.15   Employee Benefit Plans.
                         ---------------------- 

               (a) Except as set forth in Section 3.15(a) of the PhoneTel
Disclosure Letter, all of the (i) Plans and (ii) other bonus, insurance,
pension, profit sharing, retirement, health, and other benefit plans, stock
option plans and stock purchase or ownership plans currently maintained by
PhoneTel or any of the PhoneTel Subsidiaries or to which PhoneTel or any of the
PhoneTel Subsidiaries is a party may be terminated by the PhoneTel Surviving
Corporation following the PhoneTel Effective Time without financial penalty or
premium and there shall be no obligation of the PhoneTel Surviving Corporation
or New Davel following the PhoneTel Effective

                                      -21-
<PAGE>
 
Time to issue any shares of their respective capital stock pursuant to any of
the foregoing or otherwise following the PhoneTel Effective Time.  Except as set
forth in Section 3.15(a) of the PhoneTel Disclosure Letter, no payment by
PhoneTel or any of the PhoneTel Subsidiaries to any person (payable or
distributable pursuant to the foregoing agreements and plans or this Agreement)
shall be nondeductible by PhoneTel or any of the PhoneTel Subsidiaries for
Federal income tax purposes because of Section 280G of the Code.

               (b) Since December 31, 1997, all employee benefit plans within
the meaning of Section 3(3) of the Employment Retirement Income Security Act of
1974, as amended ("ERISA"), maintained by PhoneTel or any of the PhoneTel
                   -----                                                 
Subsidiaries (collectively, the "Plans") are in material compliance with, and
                                 -----                                       
have been administered and operated in accordance with, the terms of such Plans
and applicable law, and the Internal Revenue Service has determined that each
such Plan which is intended to be "qualified" within the meaning of Section
401(a) of the Code is so qualified and that each related trust is exempt from
tax under Section 501(a) of the Code.  No event which constitutes a "reportable
event" as defined in Section 4043 of ERISA has occurred and is continuing with
respect to any Plan subject to Title III of ERISA.  No material liability under
any statutes, orders, governmental rules or regulations applicable to any Plan,
including, without limitation, ERISA and the Code, has been or may reasonably be
expected to be incurred with respect to any Plan (other than liabilities for the
payment of contributions and benefits in the ordinary course).  No Plan has been
terminated pursuant to Title IV of ERISA.  No event has occurred and no
condition exists with respect to any Plan which presents a risk of termination
or partial termination of any Plan which could reasonably be anticipated to
result in liability on the part of PhoneTel or any of the PhoneTel Subsidiaries.
Full payment has been made, or provision has been made therefor, of all amounts
which PhoneTel or any of the PhoneTel Subsidiaries were required under the terms
of the Plans to have paid as contributions to such Plans on or prior to the date
hereof and no Plan which is subject to Part 3 of Subtitle B of Title I of ERISA
has incurred any "accumulated funding deficiency" (within the meaning of Section
302 of ERISA or Section 412 of the Code), whether or not waived.  Neither
PhoneTel nor any of the PhoneTel Subsidiaries nor, to the knowledge of PhoneTel,
any other "disqualified person" or "party in interest" (as defined in Section
4975 of the Code and Section 3(14) of ERISA, respectively) has engaged in any
nonexempt prohibited transactions in connection with any Plan (or its related
trust) with respect to which PhoneTel, any of the PhoneTel Subsidiaries, or any
officer, director, employee of PhoneTel or any of the PhoneTel Subsidiaries or,
to the knowledge of PhoneTel, any trustee, administrator or other fiduciary of
any Plan, would be subject to either a penalty pursuant to Section 502(i) of
ERISA or a material tax imposed by Section 4975 of the Code nor, to the
knowledge of PhoneTel, shall the consummation of the Transaction constitute such
a transaction.  Except as disclosed in Section 3.15(b) of the PhoneTel
Disclosure Letter, no claim, action or litigation, has been made, commenced or,
to the knowledge of PhoneTel, threatened with respect to any Plan (other than
claims for benefits made in the ordinary course).  No Plan or related trust owns
any securities in violation of Section 407 of ERISA.  No withdrawal by PhoneTel
or any of the PhoneTel Subsidiaries, partial or complete, within the meaning of
Title IV of ERISA, has occurred or may be reasonably expected to occur with
respect to any Plan which is a multiemployer plan which would create a material
liability not adequately reserved against by PhoneTel.  With respect to each
employee pension benefit plan (as defined in Section 3(2) of ERISA) which is a
defined benefit plan and is not a multiemployer plan, the assets of such Plan
available to meet the accrued liabilities of such Plan would exceed such

                                      -22-
<PAGE>
 
liabilities, based on the actuarial assumptions used for plan termination.
PhoneTel has paid, or has set up an adequate reserve for, all liabilities under
each Plan.

          Section 3.16   Licenses.  PhoneTel and the PhoneTel Subsidiaries have
                         --------                                              
obtained all permits, concessions, grants, franchises, licenses and other
federal, state, local or foreign governmental authorizations and approvals
(collectively, "Licenses") material, individually or in the aggregate, to the
                --------                                                     
conduct of the business of PhoneTel and the PhoneTel Subsidiaries taken as a
whole.  All such Licenses are in full force and effect and, to the knowledge of
PhoneTel, will not be impaired or adversely affected by the Transaction in a
manner or to a degree that would reasonably be expected to have a PhoneTel
Material Adverse Effect.  There is not pending or, to the knowledge of PhoneTel,
threatened any domestic or foreign suit or proceeding with respect to the
suspension, revocation, cancellation, modification or non-renewal of any of such
Licenses, and, except as set forth in Section 3.16 of the PhoneTel Disclosure
Letter, no event under the control of PhoneTel has occurred that (whether with
notice or lapse of time, or both) would reasonably be expected to result in a
suspension or revocation of or failure to renew any of such Licenses, the loss
of which would reasonably be expected to have a PhoneTel Material Adverse
Effect.

          Section 3.17   Real Estate Leases.  Section 3.17 of the PhoneTel
                         ------------------                               
Disclosure Letter sets forth a list of (a) all leases and subleases under which
PhoneTel and the PhoneTel Subsidiaries is lessor or lessee of any real property,
together with all amendments, supplements, nondisturbance agreements and other
agreements pertaining thereto, (b) all options held by PhoneTel and the PhoneTel
Subsidiaries or contractual obligations on the part of PhoneTel and the PhoneTel
Subsidiaries to purchase or acquire any interest in real property and (c) all
options granted by PhoneTel and the PhoneTel Subsidiaries or contractual
obligations on the part of PhoneTel and the PhoneTel Subsidiaries to sell or
dispose of any interest in real property, in each case, other than site location
agreements between PhoneTel or any of the PhoneTel Subsidiaries and Location
Owners ("Site Location Agreements").
         ------------------------   

          Section 3.18   Intellectual Property.
                         --------------------- 

               (a) All of the patents, registered trademarks, registered service
marks, registered copyrights, applications for any of the foregoing and
unregistered trademarks, service marks, copyrights, trade names and corporate
names material to the conduct of the business of PhoneTel and the PhoneTel
Subsidiaries (collectively, "Intellectual Property") are set forth in Section
                             ---------------------                           
3.18 of the PhoneTel Disclosure Letter.  To the knowledge of PhoneTel and except
as set forth in Section 3.18 of the PhoneTel Disclosure Letter, (i) PhoneTel or
one of the PhoneTel Subsidiaries owns and possesses all right, title and
interest in and to, or possesses the valid right to use, the Intellectual
Property; (ii)  neither PhoneTel nor any PhoneTel Subsidiary has received any
notice of any potential claim of any, infringement of or misappropriation from
any third party with respect to any material item of Intellectual Property;
(iii) each item of Intellectual Property is valid and enforceable; and (iv)
neither PhoneTel nor any of the PhoneTel Subsidiaries is currently infringing
and, except as set forth in Section 3.18 of the PhoneTel Disclosure Letter, has
not infringed any intellectual property of any other person.  To the knowledge
of PhoneTel, the PhoneTel Merger and the Transaction will not impair any item of
Intellectual Property.

                                      -23-
<PAGE>
 
               (b) PhoneTel has taken all commercially reasonable measures to
ensure that none of the computer software, computer firmware, computer hardware
(whether general or special purpose) or other similar or related items of
automated, computerized or software systems that are used or relied on by
PhoneTel or by any of the PhoneTel Subsidiaries in the conduct of its business
shall malfunction, cease to function, generate incorrect data or produce
incorrect results when processing, providing or receiving (i) date-related data
from, onto and between the twentieth and twenty-first centuries or (ii) date-
related data in connection with any valid date in the twentieth and twenty-first
centuries, except where any such malfunction or generation of incorrect data or
results would not reasonably be expected to have a PhoneTel Material Adverse
Effect.

          Section 3.19   Compliance with Other Instruments and Laws.  Except as
                         ------------------------------------------            
set forth in Section 3.19 of the PhoneTel Disclosure Letter, neither PhoneTel
nor any PhoneTel Subsidiary is in violation of any term of its articles of
incorporation or code of regulations or comparable organizational documents, or
in violation of any Contract or of any judgment, decree or order which names
PhoneTel or any PhoneTel Subsidiary or in violation of any term of any other
material instrument, contract or agreement to which it is a party or by which it
or any of its properties or assets is bound, except to the extent that any such
violation would not reasonably be expected to have a PhoneTel Material Adverse
Effect.  Except as set forth in Section 3.19 of the PhoneTel Disclosure Letter,
PhoneTel's and each PhoneTel Subsidiary's businesses are in compliance with all
Federal, state, local and foreign statutes, laws, ordinances, rules,
governmental regulations, permits, concessions, grants, franchises, licenses or
other governmental authorizations or approvals applicable to the operation of
such business, except to the extent that the failure to be in compliance would
not reasonably be expected to have a PhoneTel Material Adverse Effect.

          Section 3.20   Employees.  Without limiting the generality of Section
                         ---------                                             
3.19 hereof, PhoneTel has complied in all material respects with all laws
relating to the employment of labor, including provisions thereof relating to
wages, hours, equal opportunity and collective bargaining, and, to the knowledge
of PhoneTel, it does not have any material labor relations problems (including,
without limitation, actual or threatened strikes or work stoppages or material
grievances).

          Section 3.21   Information Supplied.  None of the information supplied
                         --------------------                                   
or to be supplied by PhoneTel for inclusion or incorporation by reference in (i)
the registration statement on Form S-4 to be filed with the SEC by New Davel in
connection with the issuance of New Davel Common Stock in the Transaction (the
"Form S-4") shall, at the time the Form S-4 is filed with the SEC or at the time
 --------                                                                       
it becomes effective under the Securities Act, contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading or (ii) the Proxy Statement shall, at the
date it is first mailed to PhoneTel's stockholders or at the time of the
PhoneTel Stockholders Meeting, 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.  The Proxy Statement shall comply as to form in
all material respects with the requirements of the Exchange Act, except that no
representation or warranty is made by PhoneTel with respect to statements made
or incorporated by reference therein based on information supplied by Old Davel
or New Davel for inclusion or incorporation by reference in the Proxy Statement.

                                      -24-
<PAGE>
 
          Section 3.22   Certain Fees.  Except in connection with the engagement
                         ------------                                           
of Ladenburg, Thalman & Company and as otherwise set forth in Section 3.22 of
the PhoneTel Disclosure Letter, neither PhoneTel nor any PhoneTel Subsidiary has
employed any broker or finder or incurred any liability for any financial
advisory, brokerage or finders' fees or commissions in connection with the
Transaction.  The fees payable by PhoneTel to Ladenburg, Thalman & Company in
connection with the Transaction are set forth in Section 3.22 of the PhoneTel
Disclosure Letter.

          Section 3.23   Opinion of Financial Advisor.  PhoneTel has received
                         ----------------------------                        
the opinion of Ladenburg, Thalman & Company, dated the date hereof, to the
effect that, as of such date, the Merger Consideration to be received in the
PhoneTel Merger by PhoneTel's stockholders is fair to PhoneTel's stockholders
from a financial point of view.

          Section 3.24   Voting Requirements.  PhoneTel Stockholder Approval is
                         -------------------                                   
the only vote of the holders of any class or series of PhoneTel's capital stock
necessary to adopt this Agreement and the PhoneTel Merger.

          Section 3.25   State Takeover Statutes. The Board of Directors of
                         -----------------------                           
PhoneTel has approved this Agreement and the consummation of the PhoneTel Merger
and the Transaction, and such approval constitutes approval of the PhoneTel
Merger by the Board of Directors of PhoneTel under the provisions of Section
1704 of Ohio Law such that Section 1704 of Ohio Law does not apply to the
Transaction.  To the knowledge of PhoneTel, no "fair price," "moratorium,"
"control share acquisition" or other similar anti-takeover statute or regulation
enacted under state or Federal law applicable to PhoneTel is applicable to the
Transaction.

          Section 3.26   Payphones.  PhoneTel has good and marketable title to
                         ---------                                            
at least 45,000 installed payphones, all of which, except for those specifically
described in Section 3.26 of the PhoneTel Disclosure Letter, are operational and
which, except for those payphones further specifically described in Section 3.26
of the PhoneTel Disclosure Letter, are subject to enforceable Site Location
Agreements with an average remaining term of 46 months.

          Section 3.27   Average Net Revenue.  The Average Net Revenue is at
                         -------------------                                
least $70.00 per payphone in operation by PhoneTel and the PhoneTel Subsidiaries
as of the date hereof.  For purposes of this Agreement, "Average Net Revenue"
                                                         ------------------- 
for such payphones shall mean the average of the monthly gross revenues
(excluding dial-around compensation) minus telephone bills (excluding operator
service provider fees) and commissions for the 3 months prior to March 31, 1998.

                                      -25-
<PAGE>
 
                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES
                                 OF OLD DAVEL

          Old Davel represents and warrants to PhoneTel as follows:

          Section 4.01  Corporate Organization.  Each of Old Davel, New Davel, D
                        ----------------------                                  
Sub and P Sub is a corporation duly organized, validly existing and in good
standing under the laws of the state of its incorporation, with all requisite
corporate power and authority to own, operate and lease its properties and
assets and to carry on its businesses as now being conducted.  Except as set
forth in Section 4.01 of the disclosure letter delivered by Old Davel to
PhoneTel concurrently with the execution of this Agreement (the "Davel
                                                                 -----
Disclosure Letter"), Old Davel, New Davel, D Sub and P Sub are duly qualified to
- -----------------                                                               
do business and are in good standing in each jurisdiction in which the character
of their properties owned or held under lease or the nature of their activities
makes such qualification necessary except where the failure to be so qualified
or to be in good standing would not, individually or in the aggregate, have a
Davel Material Adverse Effect.  As used herein, "Davel Material Adverse Effect"
                                                 ----------------------------- 
shall mean a material adverse effect on the business, assets, condition
(financial or otherwise) or results of operations of Old Davel and its
subsidiaries taken as a whole, except for the impact of any order or
determination by the Federal Communications Commission or Federal appellate
court concerning compensation paid by interexchange carriers and local exchange
carriers to payphone service providers as provided in the Federal Communications
Commission CC Docket No. 96-128, Implementation of the Pay Telephone
Reclassification and Compensation Provisions of the Telecommunications Act of
1996.

          Section 4.02  Authorization.  Each of Old Davel, New Davel, D Sub and
                        -------------                                          
P Sub has the necessary corporate power and authority to enter into this
Agreement and, subject to the approval of this Agreement by the affirmative vote
of at least two-thirds of the outstanding shares of Old Davel Common Stock at
the Davel Stockholders Meeting ("Davel Stockholder Approval") and to carry out
                                 --------------------------                   
its obligations hereunder.  The execution and delivery of this Agreement by Old
Davel, New Davel, D Sub and P Sub, the performance by Old Davel, New Davel, D
Sub and P Sub of their respective obligations hereunder and the consummation by
Old Davel, New Davel, D Sub and P Sub of the Transaction have been duly and
validly authorized by the respective Boards of Directors of Old Davel, New
Davel, D Sub and P Sub, have been approved by the Boards of Directors of Old
Davel, New Davel, D Sub and P Sub as otherwise required by their respective
articles of incorporation or comparable organizational documents, and have been
approved by Old Davel as the sole stockholder of New Davel and by New Davel as
the sole stockholder of each of D Sub and P Sub.  Except for Davel Stockholder
Approval, no other corporate proceeding on the part of Old Davel, New Davel, D
Sub or P Sub is necessary for the execution and delivery of this Agreement by
each of Old Davel, New Davel, D Sub and P Sub, the performance of their
obligations hereunder and the consummation by Old Davel, New Davel, D Sub and P
Sub of the Transaction.  This Agreement has been duly and validly executed and
delivered by each of Old Davel and P Sub and is a legal, valid and binding
obligation of each of Old Davel, New Davel, D Sub and P Sub, enforceable against
each of them in accordance with its terms, except as such enforceability may be
limited by applicable bankruptcy, insolvency, moratorium, reorganization or
other laws affecting creditors' rights generally or by the availability of
equitable remedies generally.

                                      -26-
<PAGE>
 
          Section 4.03  Capital Stock.  As of June 1, 1998, the authorized
                        -------------                                     
capital stock of Old Davel consisted of:  (a) 10,000,000 shares of Old Davel
Common Stock, of which 4,647,809 shares were issued and outstanding and no
shares were held in Old Davel's treasury and (b) 1,000,000 shares of preferred
stock, par value $.01 per share, of which no shares were issued and outstanding.
All of the outstanding shares of capital stock of Old Davel have been validly
issued and are fully paid, nonassessable and free of preemptive rights with no
personal liability attaching to the ownership thereof.  As of June 1, 1998,
except for Old Davel Options to acquire not more than 500,350 shares of Old
Davel Common Stock and Old Davel Warrants to acquire not more than 58,000 shares
of Old Davel Common Stock, there were no outstanding subscriptions, options,
warrants, rights, contracts or other arrangements or commitments obligating Old
Davel to issue any shares of its capital stock or any securities convertible
into or exchangeable for shares of its capital stock.

          Section 4.04  Subsidiaries.  Section 4.04 of the Davel Disclosure
                        ------------                                       
Letter lists all direct and indirect subsidiaries of Old Davel (each, a "Davel
                                                                         -----
Subsidiary" and collectively, the "Davel Subsidiaries").  Except for the Davel
- ----------                         ------------------                         
Subsidiaries and as set forth in Section 4.04 of the Davel Disclosure Letter,
Old Davel does not directly or indirectly own any interest in any other
corporation, partnership, joint venture or other business association or entity.
Each Davel Subsidiary is a corporation duly organized, validly existing and in
good standing under the laws of the jurisdiction of its incorporation and has
all requisite corporate power and authority to own, operate and lease its
properties and assets and to carry on its business as it is now being conducted.
Except as set forth in Section 4.04 of the Davel Disclosure Letter, each Davel
Subsidiary is duly qualified to do business and is in good standing in each
jurisdiction in which the character of its properties owned or held under lease
or the nature of its activities makes such qualification necessary, except where
the failure to be so qualified or to be in good standing would not, individually
or in the aggregate, be reasonably expected to have a Davel Material Adverse
Effect. Except as set forth in Section 4.04 of the Davel Disclosure Letter, all
outstanding shares of capital stock of each Davel Subsidiary are validly issued,
fully paid and nonassessable and are owned by Old Davel or another Davel
Subsidiary free and clear of any liens, claims or encumbrances.

          Section 4.05  Consents and Approvals; No Violations.  Except for (a)
                        -------------------------------------                 
applicable requirements of the Exchange Act, including the filing with and
clearing by the SEC of the Form S-4, (b) the filing of a Pre-Merger Notification
and Report Form by Old Davel and the expiration or termination of the waiting
period under the HSR Act, (c) the filing of the PhoneTel Certificate of Merger
as required by Ohio Law and the filing of the Davel Articles of Merger as
required by Illinois Law, (d) such filings and consents as may be required under
any environmental law pertaining to any notification, disclosure or required
approval triggered by the Transaction, (e) filings with the Nasdaq Stock Market
to permit the shares of New Davel Common Stock that are to be issued in the
Transaction to be approved for listing on the Nasdaq Stock Market, subject to
official notice of issuance, and to continue to be listed on the Nasdaq Stock
Market following the Closing Date, and (f) such consents, approvals, orders,
authorizations, notifications, registrations, declarations and filings as may be
required by state public utility or public service commissions or under the
corporation, takeover or blue sky laws of various states, no filing with or
prior notice to, and no permit, authorization, consent or approval of any
Governmental Entity is necessary for the consummation by Old Davel, New Davel, D
Sub or P Sub of the Transaction.  Except as set forth

                                      -27-
<PAGE>
 
in Section 4.05 of the Davel Disclosure Letter, neither the execution and
delivery of this Agreement by Old Davel, New Davel, D Sub or P Sub, nor the
consummation by Old Davel, New Davel, D Sub or P Sub of the Transaction nor
compliance by Old Davel, New Davel, D Sub or P Sub with any of the provisions
hereof, will (i) conflict with or result in any violation of any provision of
the articles of incorporation or bylaws, or comparable organizational documents,
of Old Davel or any Davel Subsidiary, (ii) at the PhoneTel Effective Time,
result in a violation or breach of, or constitute (with or without due notice or
lapse of time or both) a default (or give rise to any right of termination,
cancellation or acceleration) under, any note, bond, mortgage indenture,
license, agreement or other instrument or obligation to which Old Davel or any
Davel Subsidiary is a party or by which any of them or any of their respective
properties or assets may be bound, or (iii) subject to the governmental filings
and other matters referred to above in this Section 4.05, violate any Federal,
state, local or foreign order, writ, injunction, decree, statute, rule or
regulation applicable to Old Davel or any Davel Subsidiary or any of their
properties or assets, excluding from the foregoing clauses (ii) and (iii)
violations, breaches or defaults which would not, individually or in the
aggregate, be reasonably expected to have a Davel Material Adverse Effect.

          Section 4.06  SEC Reports and Financial Statements.
                        ------------------------------------

               (a) Since December 31, 1994, Old Davel has filed all required
forms, reports and documents with the SEC required to be filed by it pursuant to
the Securities Act and the Exchange Act (hereinafter collectively referred to as
the "Old Davel Reports"), all of which have complied in all material respects
     -----------------
with all applicable requirements of the Securities Act and the Exchange Act.

               (b) None of Old Davel Reports, including, without limitation, any
financial statements or schedules included therein, at the time filed, contained
any untrue statement of a material fact or omitted to state a 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.

               (c) The consolidated balance sheets and the related consolidated
statements of operations, stockholders' equity and changes in financial position
(including, without limitation, the related notes thereto) of Old Davel and its
consolidated subsidiaries included in the financial statements contained in Old
Davel's Annual Report on Form 10-K for the year ended December 31, 1997 (the
"Old Davel 10-K") and in Old Davel's Quarterly Report on Form 10-Q for the
 --------------                                                           
quarter ended March 31, 1998 (the "Old Davel 10-Q") present fairly the
                                   --------------                     
consolidated financial position of Old Davel and its consolidated subsidiaries
as of their respective dates, and the results of consolidated operations and
changes in consolidated financial position for the periods then ended, all in
conformity with GAAP applied on a consistent basis, except as otherwise noted
therein, and in the case of unaudited interim financial statements subject to
normal year-end audit adjustments and the absence of footnotes.

          Section 4.07  Absence of Undisclosed Liabilities.  Neither Old Davel
                        ----------------------------------                    
nor any Davel Subsidiary has any liabilities (whether absolute, accrued or
contingent), except: (a) liabilities, obligations or contingencies that are
accrued and reserved against in the consolidated balance sheet of Old Davel and
the Davel Subsidiaries as of December 31, 1997 or reflected in the notes
thereto,

                                      -28-
<PAGE>
 
(b) liabilities incurred since December 31, 1997 in the ordinary course of
business, (c) liabilities disclosed in Section 4.07 of the Davel Disclosure
Letter, or (d) any liabilities which, individually or in the aggregate, have not
had, and would not reasonably be expected to have, a Davel Material Adverse
Effect.

          Section 4.08  Changes.  Since the date of the Davel 10-K, and except
                        -------                                               
as set forth in the Davel Reports filed prior to the date of this Agreement (as
amended to the date hereof, the "Filed Davel Reports"), and except as otherwise
                                 -------------------                           
disclosed in Section 4.08 of the Davel Disclosure Letter or as otherwise
provided by this Agreement:

               (a) there has been no Davel Material Adverse Effect;

               (b) as of the date hereof, except as permitted or otherwise
contemplated by this Agreement, there has been no direct or indirect redemption,
purchase or other acquisition of any shares of Old Davel's capital stock, or any
declaration, setting aside or payment of any dividend or other distribution by
Old Davel in respect of Old Davel's capital stock, or any issuance of any shares
of capital stock of Old Davel, or any granting to any person of any option to
purchase or other right to acquire shares of capital stock of Old Davel or any
stock split or other change in Old Davel's capitalization;

               (c) as of the date hereof, neither Old Davel nor any Davel
Subsidiary has entered into or agreed to enter into any new or amended contract
with any labor unions representing employees of Old Davel or any Davel
Subsidiary;

               (d) as of the date hereof, neither Old Davel nor any Davel
Subsidiary has entered into or agreed to enter into any new or amended contract
with any of the officers thereof or otherwise increased the compensation payable
to the officers or directors of any such entity;

               (e) as of the date hereof, neither Old Davel nor any Davel
Subsidiary has (i) entered into or amended any bonus, incentive compensation,
deferred compensation, profit sharing, retirement, pension, group insurance or
other benefit plan except as required by law or regulations and except for the
Executive Agreements or (ii) made any contribution to any such plan except for
contributions specifically required by law or pursuant to the terms of such
plans; and

               (f) neither Old Davel nor any Davel Subsidiary has made any
change in accounting methods, principles or practices materially and adversely
affecting its assets, liabilities or business, except in accordance with GAAP.

          Section 4.09  Investigations; Litigation.
                        -------------------------- 

               (a) Except as described in Section 4.09 of the Davel Disclosure
Letter, and other than reviews pursuant to the HSR Act, there are no pending or,
to the knowledge of Old Davel, threatened investigations, reviews or inquiries
by any Governmental Entity with respect to Old Davel or any of the Davel
Subsidiaries or with respect to the activities of any officer, director or, to
the knowledge of Old Davel, employee of Old Davel (an "Old Davel
                                                       ---------
Investigation"), other than Old Davel Investigations which, if the resolution
thereof were adverse, would not, individually or

                                      -29-
<PAGE>
 
in the aggregate, reasonably be expected to have a Davel Material Adverse
Effect.  For the purpose of this Agreement, "knowledge of Old Davel" shall be
                                             ----------------------          
deemed to mean the actual knowledge, after reasonable inquiry, of any executive
officer of Old Davel.

               (b) Except as described in Section 4.09 of the Davel Disclosure
Letter, (i) there are no actions or proceedings pending or, to the knowledge of
Old Davel, threatened against Old Davel or any of the Davel Subsidiaries before
any court or before any administrative agency or administrative officer or
executive, whether Federal, state, local or foreign, which seek to enjoin the
PhoneTel Merger or the Davel Merger which, if adversely determined, would,
individually or in the aggregate, reasonably be expected to have a Davel
Material Adverse Effect, (ii) there are no outstanding domestic or foreign
judgments, decrees or orders against Old Davel or any of its subsidiaries that,
individually or in the aggregate, would reasonably be expected to have a Davel
Material Adverse Effect, (iii) neither Old Davel nor any of the Davel
Subsidiaries is in violation of, and none of them has received any claim or
notice that it is in violation of, any federal, state, local or foreign laws,
statutes, rules, regulations or orders promulgated or judgments entered by any
Governmental Entity, which violations, individually or in the aggregate, would
reasonably be expected to have a Davel Material Adverse Effect; and (iv) there
are no actions pending or, to the knowledge of Old Davel, threatened against the
directors or any director of Old Davel alleging a breach of such directors' or
director's fiduciary duties (except such actions which may arise as a result of
the Transaction).

          Section 4.10  Environmental Matters.  Except as described in the Filed
                        ---------------------                                   
Davel Reports, (a) Old Davel and each of the Davel Subsidiaries are in
compliance with all applicable Environmental Laws, except for non-compliance
that would not, individually or in the aggregate, reasonably be expected to have
a Davel Material Adverse Effect, which compliance includes, but is not limited
to, the possession by Old Davel and each of the Davel Subsidiaries of permits
and other governmental authorizations required under applicable Environmental
Laws, and compliance with the terms and conditions thereof; (b) neither Old
Davel nor any of the Davel Subsidiaries has received written notice of, or, to
the knowledge of Old Davel, is the subject of, any actions, causes of action,
claims, investigations, demands or notices by any person alleging liability
under or non-compliance with any Environmental Law that would, individually or
in the aggregate, reasonably be expected to have a Davel Material Adverse
Effect; and (c) there has not been by Old Davel or any of the Davel Subsidiaries
any treatment, storage, disposal or release of any hazardous or toxic material,
substance or waste or of petroleum, or any fractions or by-products thereof, at
any of their current or, to the knowledge of Old Davel, former properties or
facilities or any current or, to the knowledge of Old Davel, former offsite
properties and facilities used in the business of Old Davel or the Davel
Subsidiaries (in each case, other than properties or facilities where payphones
are located pursuant to agreements with Location Owners) in a manner or at
levels that require or is reasonably likely to require investigation, removal or
remediation under Environmental Laws that would, either individually or in the
aggregate, reasonably be expected to have a Davel Material Adverse Effect.

          Section 4.11  Certain Fees.  Except in connection with the engagement
                        ------------                                           
of ABN AMRO Incorporated, none of Old Davel, D Sub, P Sub or New Davel has
employed any broker or finder or incurred any liability for any financial
advisory, brokerage or finders' fees or commissions in connection with the
Transaction.

                                      -30-
<PAGE>
 
          Section 4.12  Taxes.    Each of Old Davel and the Davel Subsidiaries
                        -----                                                 
has filed all tax returns and reports required to be filed by it and all such
returns and reports are complete and correct in all materials respects, or
requests for extensions to file such returns or reports have been timely filed,
granted and have not expired, except to the extent that such failures to file,
to be complete or correct or to have extensions granted that remain in effect
individually or in the aggregate would not reasonably be expected to have a
Davel Material Adverse Effect.  Each of Old Davel and the Davel Subsidiaries has
timely paid (or Old Davel has paid on its behalf) all taxes that have become due
and payable, except to the extent the failure to pay such taxes individually or
in the aggregate would not reasonably be expected to have a Davel Material
Adverse Effect, and the most recent financial statements contained in the Davel
Reports reflect an adequate reserve in accordance with GAAP for all taxes
payable by Old Davel and the Davel Subsidiaries for all taxable periods and
portions thereof accrued through the date of such financial statements.

               (a) No deficiencies for any taxes have been proposed, asserted or
assessed against Old Davel or any of the Davel Subsidiaries that are not
adequately reserved for, except for deficiencies that individually or in the
aggregate would not reasonably be expected to have a Davel Material Adverse
Effect.  Except as set forth in Section 4.12 of the Davel Disclosure Letter,
there is no action, suit, taxing authority proceeding or audit now in progress,
pending, or, to the knowledge of Old Davel, threatened against or with respect
to Old Davel or any of the Davel Subsidiaries.

          Section 4.13  Change of Control Provisions.  Except as disclosed in
                        ----------------------------                         
Section 4.13 of the Davel Disclosure Letter, none of the employment, consulting,
severance or indemnification contracts or agreements between Old Davel or any
Davel Subsidiary, on the one hand, and any directors, officers or other
employees of Old Davel or any Davel Subsidiary, on the other hand, and none of
Old Davel's or any Davel Subsidiary's employee benefit plans, programs or
arrangements contains any change-in-control provision that would be triggered as
a result of the Transaction.

          Section 4.14  Licenses.  Old Davel and the Davel Subsidiaries have
                        --------                                            
obtained all Licenses material, individually or in the aggregate, to the conduct
of the business of Old Davel and the Davel Subsidiaries taken as a whole.  All
of such Licenses are in full force and effect and, to the best of Old Davel's
knowledge, will not be impaired or adversely affected by the Transaction in a
manner or to a degree that would reasonably be expected to have a Davel Material
Adverse Effect. There is not pending or, to the knowledge of Old Davel,
threatened any domestic or foreign suit or proceeding with respect to the
suspension, revocation, cancellation, modification or non-renewal of any of such
Licenses, and, except as set forth in Section 4.14 of the Davel Disclosure
Letter, no event under the control of Old Davel has occurred that (whether with
notice or lapse of time, or both) would reasonably be expected to result in a
suspension or revocation of or failure to renew any of such Licenses, the loss
of which would reasonably be expected to have a Davel Material Adverse Effect.

          Section 4.15  Compliance with Other Instruments and Laws.  Except as
                        ------------------------------------------            
set forth in Section 4.15 of the Davel Disclosure Letter, neither Old Davel nor
any of the Davel Subsidiaries is in violation of any term of its articles of
incorporation or bylaws or comparable organizational documents, or in violation
of any judgment, decree or order which names Old Davel or any of the Davel
Subsidiaries or in violation of any term of any other material instrument,
contract or

                                      -31-
<PAGE>
 
agreement to which it is a party or by which it or any of its properties or
assets is bound, except to the extent that any such violation would not
reasonably be expected to have a Davel Material Adverse Effect.  Except as set
forth in Section 4.15 of the Davel Disclosure Letter, Old Davel's and each of
the Davel Subsidiaries' businesses are in compliance with all Federal, state,
local and foreign statutes, laws, ordinances, rules, governmental regulations,
permits, concessions, grants, franchises, licenses or other governmental
authorizations or approvals applicable to the operation of such business, except
to the extent that the failure to be in compliance would not reasonably be
expected to have a Davel Material Adverse Effect.

          Section 4.16  Employees.  Without limiting the generality of Section
                        ---------                                             
4.15 hereof, Old Davel has complied in all material respects with all laws
relating to the employment of labor, including provisions thereof relating to
wages, hours, equal opportunity and collective bargaining, and, to the knowledge
of Old Davel, it does not have any material labor relations problems (including,
without limitation, actual or threatened strikes or work stoppages or material
grievances).

          Section 4.17  Information Supplied.  None of the information supplied
                        --------------------                                   
or to be supplied by Old Davel for inclusion or incorporation by reference in
(i) the Form S-4 shall, at the time the Form S-4 is filed with the SEC or at the
time it becomes effective under the Securities Act, contain any untrue statement
of a material fact or omit to state any material fact required to be stated
therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading or (ii) the Proxy
Statement shall, at the date it is first mailed to Old Davel's stockholders or
at the time of the Davel Stockholders Meeting, 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.  The Form S-4 shall
comply as to form in all material respects with the requirements of the
Securities Act, except that no representation or warranty is made by Old Davel
with respect to statements made or incorporated by reference in either the Form
S-4 or the Proxy Statement based on information supplied by the Company for
inclusion or incorporation by reference therein.

          Section 4.18  Opinion of Financial Advisor.  Old Davel has received
                        ----------------------------                         
the opinion of ABN AMRO Incorporated, dated the date hereof, to the effect that,
as of such date, the PhoneTel Merger Consideration to be paid in the PhoneTel
Merger is fair to Old Davel and its stockholders from a financial point of view.

          Section 4.19  Voting Requirements.  Davel Stockholder Approval is the
                        -------------------                                    
only vote of the holders of any class or series of Old Davel's capital stock
necessary to approve this Agreement and the Davel Merger.

          Section 4.20  State Takeover Statutes.  To the knowledge of Old Davel,
                        -----------------------                                 
assuming no PhoneTel Shareholder will beneficially own 15% or more of the
outstanding New Davel Common Stock after the PhoneTel Effective Time, no "fair
price," "moratorium," "control share acquisition" or other similar anti-takeover
statute or regulation enacted under state or Federal law applicable to Old Davel
is applicable to the Transaction.

                                      -32-
<PAGE>
 
          Section 4.21  No Company Shares.  None of Old Davel, D Sub, P Sub or
                        -----------------  
New Davel owns any shares of PhoneTel Common Stock.

          Section 4.22  Rights.  Assuming that no stockholder of PhoneTel shall,
                        ------                                                  
upon consummation of the PhoneTel Merger, become the beneficial owner of 15
percent or more of the shares of New Davel Common Stock then outstanding, the
execution of this Agreement and the consummation of the Transaction do not and
will not result in the ability of any person to exercise any New Davel Rights or
enable or require any New Davel Rights to separate from the shares of the New
Davel Common Stock to which they are attached or to be triggered or become
exercisable.

          Section 4.23  Davel Financing Arrangements.  Old Davel has received a
                        ----------------------------                           
"highly confident" letter (the "Letter") from a responsible financing source
                                ------                                      
which indicates the belief that funds shall be available from third parties
sufficient in the aggregate to provide the funds necessary to effect the Debt
Tender and the redemption of the PIK Preferred in accordance with Section 5.06
hereof and to pay the fees and expenses related to the Transaction (such
necessary funds being referred to herein as the "Financing").  The Letter has
                                                 ---------                   
not been rescinded or withdrawn or amended in a manner adverse to PhoneTel.  A
copy of the Letter has been provided to PhoneTel.


                                 ARTICLE V

                             COVENANTS OF PHONETEL

          Section 5.01  Conduct of Business by PhoneTel Pending the PhoneTel
                        ----------------------------------------------------
Merger. PhoneTel covenants and agrees that, prior to the PhoneTel Effective Time
- ------                                                                          
or the date, if any, on which this Agreement is earlier terminated pursuant to
Section 9.01 hereof, except as contemplated by Section 5.04 hereof or as set
forth in Section 5.01 of the PhoneTel Disclosure Letter, unless Old Davel shall
otherwise consent in writing or except as otherwise contemplated by this
Agreement:

               (a) the businesses of PhoneTel and the PhoneTel Subsidiaries
shall be conducted only in the ordinary and usual course; to the extent
consistent therewith, PhoneTel shall use its best efforts to, and shall cause
each PhoneTel Subsidiary to, preserve intact their respective business
organizations and goodwill, keep available the services of their respective
officers and employees and maintain satisfactory relationships with their
respective suppliers, distributors, customers and others having business
relationships with them; and PhoneTel shall notify Old Davel as promptly as
practicable of any event or occurrence or emergency not in the ordinary and
usual course of the business of PhoneTel or any PhoneTel Subsidiary and material
to the business of PhoneTel and the PhoneTel Subsidiaries, taken as a whole;

               (b) neither PhoneTel nor any PhoneTel Subsidiary shall (i) amend
its articles of incorporation or code of regulations or comparable
organizational documents or (ii) split, combine or reclassify the outstanding
PhoneTel Common Stock or declare, set aside or pay any dividend payable in cash,
stock or property with respect to the PhoneTel Common Stock;

               (c) neither PhoneTel nor any PhoneTel Subsidiary shall issue or
agree to issue any additional shares of, or rights of any kind to acquire shares
of, its capital stock of any class

                                      -33-
<PAGE>
 
other than the issuance of shares of capital stock of a PhoneTel Subsidiary to
PhoneTel or, with respect to PhoneTel, PhoneTel Common Stock issuable upon
exercise of PhoneTel Options or PhoneTel Warrants or upon conversion of
Preferred Stock;

               (d) neither PhoneTel nor any PhoneTel Subsidiary shall enter into
or agree to enter into, or amend, any contract or agreement with any labor
unions representing employees of PhoneTel or any PhoneTel Subsidiary;

               (e) except as contemplated by Section 5.04 hereof, PhoneTel shall
not authorize, recommend, propose or announce an intention to authorize,
recommend or propose, or enter into an agreement in principle or an agreement
with respect to any merger, consolidation or business combination (other than
the Transaction), any acquisition or disposition of a material amount of assets
or securities (including, without limitation, the assets or securities of any
PhoneTel Subsidiary) or any material change in its capitalization, or enter
into, other than in the ordinary course of business, a material contract or any
release or relinquishment of any material contract rights;

               (f) PhoneTel shall not, and shall not permit any PhoneTel
Subsidiary to, (i) enter into or amend any employment, severance or change-in-
control agreement, or any bonus, incentive compensation, deferred compensation,
profit sharing, retirement, pension, group insurance or other benefit plan
except as required by law or regulations, or as expressly provided by this
Agreement and except for the Executive Agreements or (ii) make any contribution
to any such plan except for contributions specifically required by law or
pursuant to the terms of such plans;

               (g) PhoneTel shall not (i) create, incur or assume any long-term
debt (including, without limitation, obligations in respect of capital leases)
or, except in the ordinary course of business under existing lines of credit or
except to fund out-of-pocket costs incurred in connection with the Transaction,
create, incur, assume, maintain or permit to exist any short-term debt; (ii)
assume, guarantee, endorse or otherwise become liable or responsible (whether
directly, contingently or otherwise) for the obligations of any other person
except wholly owned PhoneTel Subsidiaries in the ordinary course of business and
consistent with past practices; or (iii) make any loans, advances or capital
contributions to, or investments in, any other person other than a wholly owned
PhoneTel Subsidiary (other than customary advances to employees and short-term
investments pursuant to customary cash management systems of PhoneTel in the
ordinary course and consistent with past practice); and

               (h) neither PhoneTel nor any PhoneTel Subsidiary shall agree in
writing or otherwise to take (i) any action that it is prohibited from taking by
this Section 5.01 or (ii) any action that would constitute or is likely to cause
or result in a breach of any representation or warranty set forth herein or a
breach in any material respect of any covenant or agreement set forth herein.

          Section 5.02  Stockholders' Meeting.  Subject to Section 5.04 hereof,
                        ---------------------                                  
(a) PhoneTel shall cause a meeting of its stockholders to be duly called and
held as soon as reasonably practicable for the purpose of obtaining PhoneTel
Stockholder Approval (the "PhoneTel Stockholders Meeting") and (b) the Board of
                           -----------------------------                       
Directors of PhoneTel shall (i) unanimously recommend adoption of this

                                      -34-
<PAGE>
 
Agreement by PhoneTel's stockholders and (ii) use reasonable best efforts to
obtain PhoneTel Stockholder Approval.

          Section 5.03  Access to Information.  Subject to the terms of Section
                        ---------------------                                  
6.01 hereof, PhoneTel shall give Old Davel, its counsel, financial advisors,
auditors and other authorized representatives reasonable access during normal
business hours throughout the period prior to the Closing Date to all of the
offices, properties, business and marketing plans, books, files and records of
PhoneTel and the PhoneTel Subsidiaries, shall furnish to Old Davel, its counsel,
financial advisors, auditors and other authorized representatives such financial
and operating data and other information as such persons may reasonably request
and shall instruct PhoneTel's employees, counsel and financial advisors to
cooperate with Old Davel in its preparation for integration into the business of
Old Davel of the business of PhoneTel and the PhoneTel Subsidiaries.  Throughout
the period prior to the Closing Date, PhoneTel shall furnish promptly to Old
Davel (a) a copy of each report, schedule and other document filed or received
by it pursuant to the requirements of Federal or state securities laws, and (b)
all such other information concerning its business, properties and personnel as
Old Davel may reasonably request; provided that no investigation pursuant to
                                  --------                                  
this Section 5.03 shall affect any representation or warranty contained herein
or the conditions to the obligations of the parties to consummate the
Transaction.

          Section 5.04  No Solicitation.
                        --------------- 

               (a) PhoneTel shall not, and shall use reasonable best efforts to
cause its officers, directors, employees, investment bankers, attorneys,
accountants and other agents retained by it not to, initiate, solicit or
encourage any inquiries relating to, or the making of any, Acquisition Proposal
or engage in negotiations or discussions with, or furnish any information to,
any third party relating to any Acquisition Proposal. Notwithstanding the
foregoing or any other provision of this Agreement, PhoneTel (i) may participate
in discussions or negotiations (including, as a part thereof, making any
counterproposal) with, or furnish information to, any third party with respect
to any Acquisition Proposal if PhoneTel's Board of Directors determines in good
faith, after consultation with counsel, that the failure to participate in such
discussions or negotiations or to furnish such information may constitute a
breach of its fiduciary duties under, or otherwise violate, applicable law, and
(ii) shall be permitted to (A) take and disclose to PhoneTel's stockholders a
position with respect to an Acquisition Proposal or amend or withdraw such
position or its position with respect to the PhoneTel Merger, or (B) make
disclosure to PhoneTel's stockholders, in each case, if PhoneTel's Board of
Directors determines in good faith, after consultation with counsel, that the
failure to take such action may constitute a breach of its fiduciary duties
under, or otherwise violate, applicable law. As used herein, "Acquisition
                                                              -----------
Proposal" shall mean any proposal made by a third party, other than Old Davel,
- --------
New Davel, D Sub or P Sub, to acquire, directly or indirectly, (x) more than 25%
of the shares and/or voting power of the PhoneTel Common Stock then outstanding
pursuant to a merger, consolidation or other business combination, purchase of
shares, tender offer or exchange offer or similar transaction, including,
without limitation, any single or multi-step transaction or series of related
transactions or (y) all or a substantial portion of the business or assets of
PhoneTel and the PhoneTel Subsidiaries.

               (b) PhoneTel shall advise Old Davel in writing of (i) the
receipt, directly or indirectly, of any inquiries relating to an Acquisition
Proposal promptly following such receipt,

                                      -35-
<PAGE>
 
(ii) the status of any discussions or negotiations with respect thereto, (iii)
its intention to enter into any agreement relating to an Acquisition Proposal at
least 24 hours prior to executing any such agreement, and (iv) any actions taken
pursuant to Section 5.04(a) hereof promptly following such action.  Following
the receipt, directly or indirectly, of any Acquisition Proposal (or any inquiry
referred to in clause (i) above), PhoneTel shall furnish to Old Davel either a
copy of such Acquisition Proposal (or such inquiry) or a written summary of such
Acquisition Proposal (or such inquiry).

          Section 5.05  Corporate Organization.  Notwithstanding anything to the
                        ----------------------                                  
contrary contained in this Agreement or in the PhoneTel Disclosure Letter,
PhoneTel and each PhoneTel Subsidiary shall take all reasonable actions
necessary in order to remain duly qualified and in good standing until the
PhoneTel Effective Time in each jurisdiction in which the character of its
properties owned or held under lease or the nature of its activities makes such
qualification necessary.

          Section 5.06  Preferred Stock and Notes.  On or prior to the Closing
                        -------------------------                             
Date, PhoneTel shall (a) take all actions necessary to (i) allow the PhoneTel
Warrants to be exercised by the holders thereof, (ii) allow the Series A
Preferred Stock or the Series B Preferred Stock, as the case may be, issued upon
exercise of the PhoneTel Warrants, to be converted by the holders thereof into
PhoneTel Common Stock and (iii) redeem for cash, at par, the PIK Preferred
Stock, subject to the receipt of funds sufficient for such purpose from the
proceeds of the Financing, and (b) use its reasonable best efforts to (i)
consummate a tender offer (the "Debt Tender") for all of PhoneTel's outstanding
                                -----------                                    
12% Senior Notes due 2006 (the "Notes") at a price not exceeding 101% of the
                                -----                                       
principal amount of the Notes, subject to the receipt of funds sufficient for
such purpose from the proceeds of the Financing, pursuant to which at least 80%
of the aggregate outstanding principal amount of the Notes shall have been
tendered (it being understood and agreed that (A) Old Davel shall use reasonable
best efforts to enable New Davel to obtain the Financing necessary for PhoneTel
to consummate such tender offer, as well as any redemption or purchase of the
PIK Preferred Stock, and (B) any failure to receive tenders of at least 80% of
the aggregate outstanding principal amount of the Notes shall not be a breach of
the covenant set forth in this Section 5.06), (ii) procure the consent of the
requisite principal amount of the Notes to allow PhoneTel to amend the indenture
governing the Notes in a manner reasonably satisfactory to Old Davel and (iii)
enter into a supplemental indenture with respect to the Notes reflecting such
amendments.

          Section 5.07  Additional Voting Agreements.  PhoneTel shall use
                        ----------------------------                     
reasonable best efforts to cause additional holders of PhoneTel Common Stock to
enter into voting agreements containing substantially the same terms as the
PhoneTel Voting Agreements.

          Section 5.08  Confidentiality.  PhoneTel shall hold, and shall cause
                        ---------------                                       
the PhoneTel Subsidiaries to hold, and shall use their respective, reasonable
best efforts to cause their officers, directors, employees, consultants,
advisors and agents to hold, in confidence, all trade secrets and confidential
information concerning Old Davel and the Davel Subsidiaries furnished to
PhoneTel in connection with the Transaction in accordance with the
Confidentiality Agreement, dated May 29, 1998, by and between Old Davel and
PhoneTel (the "Confidentiality Agreement").

                                      -36-
<PAGE>
 
                                 ARTICLE VI

                             COVENANTS OF OLD DAVEL

          Section 6.01  Confidentiality.  Old Davel shall hold, and shall cause
                        ---------------                                        
the Davel Subsidiaries to hold, and shall use their respective  reasonable best
efforts to cause their officers, directors, employees, consultants, advisors and
agents to hold, in confidence, all trade secrets and confidential information
concerning PhoneTel and the PhoneTel Subsidiaries furnished to Old Davel in
connection with the Transaction in accordance with the Confidentiality
Agreement.

          Section 6.02  Obligations of the Davel Subsidiaries.  Old Davel shall
                        -------------------------------------                  
cause New Davel, D Sub and P Sub to perform their respective obligations under
this Agreement and to consummate the Transaction on the terms and conditions set
forth in this Agreement.

          Section 6.03  Indemnification.
                        --------------- 

               (a) New Davel shall indemnify, or shall cause the PhoneTel
Surviving Corporation or its successors or assigns to indemnify, to the fullest
extent permitted under Ohio Law, each person who was or is or becomes prior to
the PhoneTel Effective Time, a director, officer or trustee of PhoneTel and the
PhoneTel Subsidiaries (the "Indemnified Parties") for costs and expenses
                            -------------------                         
incurred in respect of actions taken prior to and including the PhoneTel
Effective Time in connection with their duties as directors, officers or
trustees of PhoneTel (including the Transaction) for a period of not less than
six years from the PhoneTel Effective Time; provided that, in the event any
                                            --------                       
claim or claims are asserted or made within such six-year period, all rights to
indemnification in respect of any such claim or claims shall continue until
final disposition of any and all such claims.  Without limitation of the
foregoing, in the event any Indemnified Party becomes involved in such capacity
in any pending or threatened action, proceeding or investigation in connection
with any matter, including the Transaction, occurring prior to and including the
PhoneTel Effective Time, the PhoneTel Surviving Corporation, to the fullest
extent permitted and on such conditions as may be required by applicable law,
shall make advances for or reimburse such Indemnified Party for his or her legal
and other out-of-pocket expenses (including the cost of any investigation and
preparation) as incurred in connection therewith.  In addition, during such six-
year period the charter and by-laws of the PhoneTel Surviving Corporation or its
successors or assigns shall contain provisions no less favorable to the present
and former directors and officers of PhoneTel than those in effect in PhoneTel
charter and by-laws as of the date hereof.

               (b) For not less than six years after the PhoneTel Effective
Time, the Davel Surviving Corporation or the PhoneTel Surviving Corporation or
their respective successors and assigns shall maintain in effect directors' and
officers' liability insurance covering the Indemnified Parties who are currently
covered by PhoneTel's existing directors' and officers' liability insurance, on
terms and conditions no less favorable to the Indemnified Parties than those in
effect on the date hereof with respect to the Indemnified Parties; provided,
                                                                   -------- 
however, that in no event shall the Davel Surviving Corporation or the PhoneTel
- -------                                                                        
Surviving Corporation or their successors and assigns be required to pay an
amount to maintain such insurance covering the Indemnified Parties in excess of
200% of the amount paid by PhoneTel as of the date hereof for such coverage; and
provided further that if such amount would exceed 200% of the amount paid as of
- -------- -------                                                               
the Closing Date

                                      -37-
<PAGE>
 
for such coverage, (i) the Indemnified Parties may accept the level of coverage
available at 200% of the amount paid by PhoneTel as of the date hereof for such
coverage or (ii) the Indemnified Parties may pay to the Davel Surviving
Corporation or the PhoneTel Surviving Corporation, as directed by New Davel,
such additional amount as would then be required to be paid in order to maintain
the full amount of such coverage and the Davel Surviving Corporation or the
PhoneTel Surviving Corporation, as the case may be, shall so maintain such
coverage.

          Section 6.04   Davel Stockholders' Meeting.  Old Davel shall cause a
                         ---------------------------                          
meeting of its stockholders to be duly called and held as soon as reasonably
practicable for the purpose of obtaining Davel Stockholder Approval (the "Davel
                                                                          -----
Stockholders Meeting").  The Board of Directors of Old Davel shall (a)
- --------------------                                                  
unanimously recommend approval of this Agreement and the Davel Merger by Old
Davel's stockholders and (b) use reasonable best efforts to obtain Davel
Stockholder Approval.

          Section 6.05   New Davel Corporate Governance.  At the Closing, the
                         ------------------------------                        
Certificate of Incorporation of New Davel shall be substantially similar to the
articles of incorporation of Old Davel with such modifications as may be
necessary or desirable to conform to the Delaware General Corporation Law,
except that the name of New Davel shall be changed to "Davel Communications,
Inc.".

                    (a)  At the Closing, the Bylaws of New Davel shall be
substantially similar to the bylaws of Old Davel with such modifications as may
be necessary or desirable to conform to the Delaware General Corporation Law.

                    (b)  At the Closing and thereafter, New Davel shall exercise
all authority to cause Mr. Peter Graf to be elected as a member of the Board of
Directors of New Davel to serve until the first anniversary of the Closing Date.

          Section 6.06   Davel Financing.  Old Davel shall use reasonable best
                         ---------------                                      
efforts to enable New Davel to secure the Financing and to enter into
appropriate indentures, loan agreements or other agreements with respect to the
Financing.  In the event all or any portion of the Financing contemplated by the
Letter becomes unavailable for any reason, Old Davel shall use reasonable best
efforts to enable New Davel to  secure the Financing by alternative means.

          Section 6.07   Employee Matters.
                         ---------------- 

                    (a)  New Davel agrees that individuals who are employed by
PhoneTel or any of the PhoneTel Subsidiaries immediately prior to the Closing
Date shall remain employees of PhoneTel or such PhoneTel Subsidiary as of the
Closing Date (each such employee, an "Affected Employee"); provided, however,
                                      -----------------    --------  -------
that nothing contained herein shall confer upon any Affected Employee the right
to continued employment by PhoneTel or any of the PhoneTel Subsidiaries for any
period of time after the Closing Date which is not otherwise required by law.

                                      -38-
<PAGE>
 
               (b) New Davel shall, or shall cause PhoneTel or one of the Davel
Subsidiaries to give Affected Employees full credit for purposes of eligibility
and vesting under any employee benefit plans or arrangements maintained by New
Davel, PhoneTel or any of the Davel Subsidiaries for such Affected Employees'
service with New Davel, PhoneTel or any affiliate thereof to the same extent
recognized immediately prior to the Closing Date.

               (c) New Davel shall, or shall cause PhoneTel or one of the Davel
Subsidiaries to, (i) waive all limitations as to preexisting conditions
exclusions and waiting periods with respect to participation and coverage
requirements applicable to the Affected Employees under any welfare benefit
plans in which such employees may be eligible to participate as of or after the
Closing Date, other than limitations or waiting periods that are already in
effect with respect to such employees and that have not been satisfied as of the
Closing Date under any welfare plan maintained for the Affected Employees
immediately prior to the Closing Date, and (ii) provide each Affected Employee
with credit for any co-payments and deductibles paid prior to the Closing Date
in satisfying any applicable deductible or out-of-pocket requirements under any
welfare plans that such employees are eligible to participate in as of or after
the Closing Date.

               (d) As of the Closing Date and through the period ending no
earlier than December 31, 1998, New Davel shall, or shall cause PhoneTel or one
of the Davel Subsidiaries to, provide coverage and benefits to Affected
Employees pursuant to the employee benefit plans or arrangements (including,
without limitation, the Plans) maintained by PhoneTel for such Affected
Employees immediately prior to the Closing Date; provided, however, that (i)
this Section 6.07(d) shall not require New Davel to provide or maintain any
equity-based compensation plans of PhoneTel and (ii) nothing contained herein
shall confer upon any Affected Employee the right to continued coverage and
benefits pursuant to such PhoneTel plans or arrangements after December 31,
1998.

               (e) The PhoneTel Surviving Corporation shall continue to honor
all employment, severance, separation and other compensation agreements existing
as of the Closing Date between PhoneTel or any of the PhoneTel Subsidiaries with
any officer or employee thereof, which are set forth on Schedule 6.07(e).

          Section 6.08  Financial Disclosure.  New Davel shall use reasonable
                        --------------------                                 
best efforts to publish financial results (including combined sales and net
income) covering at least 30 days of post-Transaction operations within 45 days
and, in any event, shall publish such results within 75 days after the end of
the first full calendar month following the month in which the Closing Date
occurs.


                                 ARTICLE VII

                            COVENANTS OF THE PARTIES

          Section 7.01  Reasonable Best Efforts.  Subject to the terms and
                        -----------------------                           
conditions of this Agreement, each party shall use its reasonable best efforts
to take, or cause to be taken, all action and to do, or cause to be done, all
things necessary, proper or advisable under applicable laws and regulations to
consummate the Transaction, provided that nothing herein shall require Old Davel
or

                                      -39-
<PAGE>
 
New Davel to hold, manage or operate any assets separately or to enter into any
sale or divestiture of assets.  PhoneTel and Old Davel shall each furnish to one
another and to one another's counsel all such information as may be required in
order to accomplish the foregoing actions, subject to the terms and conditions
of this Agreement.  In connection with and without limiting the foregoing,
PhoneTel and Old Davel shall (a) take all reasonable action necessary to ensure
that no state takeover statute or similar statute or regulation is or becomes
applicable to the Transaction and (b) if any state takeover statute or similar
statute or regulation becomes applicable to the Transaction, take all reasonable
action necessary to ensure that the Transaction may be consummated as promptly
as practicable on the terms contemplated by this Agreement and otherwise to
minimize the effect of such statute or regulation on the Transaction.

          Section 7.02  Certain Filings.  PhoneTel and Old Davel shall cooperate
                        ---------------                                         
with one another (a) in connection with the preparation of the Form S-4, the
Proxy Statement and any other disclosure document filed after the date hereof
pursuant to the Securities Act, the Exchange Act or any state securities law
(each a "Disclosure Document"), (b) in determining whether any other action by
         -------------------                                                  
or in respect of, or filing with, any Governmental Entity or any actions,
consents, approvals or waivers are required to be obtained from parties to any
material contracts in connection with the consummation of the Transaction and
(c) in seeking any such actions, consents, approvals or waivers or making any
such filings, furnishing information required in connection therewith or with
the Form S-4, the Proxy Statement and the Disclosure Documents and seeking
timely to obtain any such actions, consents, approvals or waivers.

          Section 7.03  Public Announcements.  Old Davel and PhoneTel shall
                        --------------------                               
consult with each other before issuing any press release or making any public
statement with respect to this Agreement or the Transaction and, except as may
be required by applicable law or any listing agreement with any national
securities exchange, shall not issue any such press release or make any such
public statement prior to such consultation.

          Section 7.04  Further Assurances.  Upon the terms and subject to the
                        ------------------                                    
satisfaction of the conditions contained in this Agreement, each of the parties
hereto shall use its reasonable best efforts to take, or cause to be taken, all
appropriate action, and to do or cause to be done, all things necessary, proper
or advisable under applicable laws and regulations to consummate and make
effective the Transaction.

          Section 7.05  Notices of Certain Events.  PhoneTel and Old Davel
                        -------------------------  
 shall promptly notify the other of:

               (a) any notice or other communication from any person alleging
that the consent of such person is or may be required in connection with the
Transaction;

               (b) any notice or other communication from any Governmental
Entity in connection with the Transaction;

               (c) any actions, suits, claims, investigations or proceedings
commenced or, to the best of its knowledge, threatened against, relating to or
involving or otherwise affecting

                                      -40-
<PAGE>
 
PhoneTel or any PhoneTel Subsidiary, on the one hand, or Old Davel or any Davel
Subsidiary, on the other hand, which relate to the consummation of the
Transaction; and

               (d) any action, event or occurrence that would constitute a
breach of any representation, warranty, covenant or agreement of it set forth in
this Agreement.

          Section 7.06  Preparation of the Form S-4 and the Proxy Statement.
                        ---------------------------------------------------

               (a) As soon as practicable following the date of this Agreement,
PhoneTel and Old Davel shall jointly prepare and file with the SEC the Proxy
Statement and PhoneTel, Old Davel and New Davel shall prepare, and New Davel
shall file, with the SEC the Form S-4, in which the Proxy Statement shall be
included as a prospectus.  Each of PhoneTel, Old Davel and New Davel shall use
reasonable best efforts to have the Form S-4 declared effective under the
Securities Act as promptly as practicable after such filing.  PhoneTel and Old
Davel shall use their respective reasonable best efforts to cause the Proxy
Statement to be mailed to their respective stockholders as promptly as
practicable after the Form S-4 is declared effective under the Securities Act.
New Davel also shall take any action (other than qualifying to do business in
any jurisdiction in which Old Davel is not now so qualified or to file a general
consent to service of process) reasonably required to be taken under any
applicable state securities laws in connection with the issuance of the New
Davel Common Stock in the Transaction, and PhoneTel and New Davel shall each
furnish all information as may be reasonably requested in connection with any
such action.  No filing of, or amendment or supplement to, the Form S-4 shall be
made by New Davel or to the Proxy Statement shall be made by PhoneTel or Old
Davel, without providing the other party the opportunity to review and comment
thereon.  New Davel shall advise PhoneTel, promptly after it receives notice
thereof, of the time when the Form S-4 has become effective or any supplement or
amendment has been filed, the issuance of any stop order, the suspension of the
qualification of the New Davel Common Stock issuable in connection with the
Transaction for offering or sale in any jurisdiction, or any request by the SEC
for amendment of the Proxy Statement or the Form S-4 or comments thereon and
responses thereto or requests by the SEC for additional information.  If at any
time prior to the Closing Date any information relating to PhoneTel or Old
Davel, or any of its affiliates, officers or directors, should be discovered by
PhoneTel or Old Davel which should be set forth in an amendment or supplement to
any of the Form S-4 or the Proxy Statement, so that any of such documents would
not include any misstatement of a material fact or omit to state any material
fact necessary to make the statements therein, in light of the circumstances
under which they were made, not misleading, the party which discovers such
information shall promptly notify the other party hereto 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
PhoneTel and Old Davel.

          Section 7.07  Letters of Accountants.
                        ---------------------- 

               (a) Each of Old Davel and PhoneTel shall use its reasonable best
efforts to cause to be delivered to the other party two letters from PhoneTel's
independent accountants, one dated a date within two business days before the
date on which the Form S-4 shall become effective and one dated a date within
two business days before the Closing Date, each addressed to the other party, in
form and substance reasonably satisfactory to Old Davel and PhoneTel and
customary in

                                      -41-
<PAGE>
 
scope and substance for comfort letters delivered by independent public
accountants in connection with registration statements similar to the Form S-4.

               (b) Each of Old Davel and PhoneTel shall use reasonable best
efforts to cause to be delivered to the other party and such other party's
independent accountants two letters from its independent accountants addressed
to Old Davel and PhoneTel, one dated as of the date the Form S-4 is effective
and one dated as of the Closing Date, in each case stating that accounting for
the Transaction as a pooling of interests under Opinion 16 of the Accounting
Principles Board and applicable SEC rules and regulations is appropriate if the
Transaction is consummated in accordance with this Agreement.

          Section 7.08  Affiliates.
                        ---------- 

               (a) Not less than 45 days prior to the PhoneTel Effective Time,
PhoneTel shall deliver to New Davel a list of names and addresses of each person
who, in PhoneTel's reasonable judgment, is an affiliate within the meaning of
Rule 145 of the rules and regulations promulgated under the Securities Act or
otherwise applicable SEC accounting releases with respect to pooling of
interests accounting treatment (each such person, a "Pooling Affiliate") of
                                                     -----------------     
PhoneTel. PhoneTel shall provide New Davel such information and documents as New
Davel shall reasonably request for purposes of reviewing such list.  PhoneTel
shall deliver or cause to be delivered to New Davel, not later than 30 days
prior to the PhoneTel Effective Time, an affiliate letter in the form attached
hereto as Exhibit A, executed by each of the Pooling Affiliates of PhoneTel
          ---------                                                        
identified in the foregoing list.  New Davel shall be entitled to place legends
as specified in such affiliate letters on the certificates evidencing any of the
New Davel Common Stock to be received by the Pooling Affiliates of PhoneTel
pursuant to the terms of this Agreement, and to issue appropriate stop transfer
instructions to the transfer agent for the New Davel Common Stock, consistent
with the terms of such letters.

               (b) Not less than 45 days prior to the PhoneTel Effective Time,
Old Davel shall deliver to New Davel a list of names and addresses of each
person who, in Old Davel's reasonable judgment, is a Pooling Affiliate of Old
Davel. Old Davel shall provide New Davel such information and documents as New
Davel shall reasonably request for purposes of reviewing such list. Old Davel
shall deliver or cause to be delivered to New Davel, not later than 30 days
prior to the Davel Effective Time, an affiliate letter in the form attached
hereto as Exhibit B, executed by each Pooling Affiliate of Old Davel identified
          ---------
in the foregoing list.

          Section 7.09  Nasdaq Listing.  New Davel shall use its reasonable best
                        --------------                                          
efforts to cause the New Davel Common Stock to be issued in the Transaction to
be approved for listing on the Nasdaq Stock Market, subject to official notice
of issuance, as promptly as practicable after the date hereof, and in any event
prior to the Closing Date and to continue to be listed on the Nasdaq Stock
Exchange following the Closing Date.

          Section 7.10  Tax Treatment.  Each of New Davel, Old Davel and
                        -------------                                   
PhoneTel shall use its reasonable best efforts to cause each of the PhoneTel
Merger and the Davel Merger to qualify as tax-free transactions (except with
respect to any cash received).

                                      -42-
<PAGE>
 
          Section 7.11  Pooling of Interests.  Each of Old Davel and PhoneTel
                        --------------------                                 
shall use its reasonable best efforts to cause the Transaction to be accounted
for as a pooling of interests under Opinion 16 of the Accounting Principles
Board and applicable SEC rules and regulations, and each of PhoneTel and Old
Davel shall not knowingly take any action that would cause such accounting
treatment not to be obtained.

          Section 7.12  Representations.  Each of PhoneTel and Old Davel shall
                        ---------------                                       
(a) use its reasonable best efforts to take all action necessary to render true
and correct as of the Closing Date its representations and warranties contained
in this Agreement, (b) refrain from taking any action that would render any such
representation or warranty untrue or incorrect as of such time, and (c) perform
or cause to be satisfied each agreement, covenant or condition to be performed
or satisfied by it.


                                 ARTICLE VIII

                            CONDITIONS TO THE MERGER

          Section 8.01  Conditions to the Obligations of Each Party.  The
                        -------------------------------------------      
obligations of PhoneTel, Old Davel, New Davel, D Sub and P Sub to consummate the
Transaction are subject to the satisfaction or waiver of the following
conditions:

               (a) this Agreement and the PhoneTel Merger shall have been
approved and adopted by the stockholders of PhoneTel in accordance with Ohio
Law;

               (b) this Agreement and the Davel Merger shall have been approved
by the stockholders of Old Davel in accordance with Illinois Law;

               (c) any applicable waiting period under the HSR Act relating to
the PhoneTel Merger and the Transaction shall have expired or been terminated;

               (d) no Governmental Entity shall have issued any judgment,
injunction, order or decree or taken any other action permanently enjoining,
restraining or otherwise prohibiting the Transaction, which judgment,
injunction, order or decree or other action shall have become final and
nonappealable;

               (e) the Form S-4 shall have become effective under the Securities
Act and shall not be the subject of any stop order or proceedings seeking a stop
order;

               (f) the shares of Davel Common Stock issuable to PhoneTel's
stockholders as contemplated by this Agreement shall have been approved for
listing on the Nasdaq Stock Market, subject to official notice of issuance;

               (g) the PIK Preferred Stock shall have been redeemed, as
contemplated by Section 5.06 hereof;

                                      -43-
<PAGE>
 
               (h) the transactions contemplated by that certain Stock Purchase
Agreement, dated as of May 14, 1998, by and between Samstock, L.L.C. and Old
Davel shall have been consummated; and

               (i) New Davel shall have obtained the Financing and entered into
appropriate indentures, loan agreements, or other agreements with respect to the
Financing.

          Section 8.02  Conditions to the Obligations of Old Davel, New Davel, D
                        --------------------------------------------------------
Sub and P Sub.  The obligations of Old Davel, New Davel, D Sub and P Sub to
- -------------                                                              
consummate the Transaction are subject to the satisfaction of the following
additional conditions:

               (a) the representations and warranties of PhoneTel as set forth
in this Agreement shall be true and correct in all material respects as if made
on and as of the Closing Date (other than those representations and warranties
which address matters only as of a certain date, which shall be true and correct
in all material respects as of such certain date) and PhoneTel shall have
complied with or performed in all material respects all agreements and covenants
required to be complied with or performed by it under this Agreement at or prior
to the Closing Date; provided, that, for purposes of determining whether the
                     --------                                               
condition set forth in this Section 8.02(a) has been satisfied, no
representation or warranty of PhoneTel shall be deemed untrue, incorrect, not
complied with or not performed as a consequence of the existence or absence of
any fact, circumstance or event unless such fact, circumstance or event,
individually or when taken together with all other facts, circumstances or
events inconsistent with the representations or warranties of PhoneTel, has had
or would reasonably be expected to have a PhoneTel Material Adverse Effect
(disregarding for this purpose any materiality qualification contained in such
representations or warranties);

               (b) receipt by Old Davel of an opinion of Arthur Anderson LLP,
its independent certified public accountants, stating that accounting for the
Transaction as a pooling of interests under Opinion 16 of the Accounting
Principles Board and applicable SEC rules and regulations is appropriate if the
Transaction is consummated in accordance with this Agreement;

               (c) at least 80% of the aggregate outstanding principal amount of
the Notes shall have been tendered to PhoneTel pursuant to and in accordance
with of Section 5.06 hereof; and

               (d) Old Davel shall have received an opinion from Kirkland &
Ellis, counsel to Old Davel, dated as of the Closing Date, to the effect that
(i) the Davel Merger, taken together with the PhoneTel Merger, will be treated
as part of an integrated transaction that qualifies as an exchange of property
for stock as described in Section 351 of the Code and (ii) no gain or loss will
be recognized by a shareholder of Old Davel upon the exchange of its shares of
Old Davel Common Stock for shares of New Davel Common Stock pursuant to the
Davel Merger. In rendering such opinion, counsel to Old Davel shall be entitled
to rely upon usual and customary representations of shareholders and officers of
New Davel, Old Davel, PhoneTel and others.

                                      -44-
<PAGE>
 
          Section 8.03  Conditions to the Obligations of PhoneTel.  The
                        -----------------------------------------      
obligations of PhoneTel to consummate the Transaction are subject to the
satisfaction of the following additional conditions:

               (a) the representations and warranties of Old Davel as set forth
in this Agreement shall be true and correct in all material respects as if made
on and as of the PhoneTel Effective Time (other than those representations and
warranties which address matters only as of a certain date, which shall be true
and correct in all material respects as of such certain date) and Old Davel, New
Davel, D Sub and P Sub shall have complied with or performed in all material
respects all agreements and covenants required to be complied with or performed
by them under this Agreement at or prior to the Closing Date; provided, that,
                                                              --------       
for purposes of determining whether the condition set forth in this Section
8.03(a) has been satisfied, no representation or warranty of Old Davel shall be
deemed untrue, incorrect, not complied with or not performed as a consequence of
the existence or absence of any fact, circumstance or event unless such fact,
circumstance or event, individually or when taken together with all other facts,
circumstances or events inconsistent with the representations or warranties of
Old Davel, has had or would reasonably be expected to have a Davel Material
Adverse Effect (disregarding for this purpose any materiality qualification
contained in such representations or warranties);

               (b) receipt by PhoneTel of an opinion of Price Waterhouse LLP,
its independent certified public accountants, stating that accounting for the
Transaction as a pooling of interests under Opinion 16 of the Accounting
Principles Board and applicable SEC rules and regulations is appropriate if the
Transaction is consummated in accordance with this Agreement; and

               (c) PhoneTel shall have received an opinion from Skadden, Arps,
Slate, Meagher & Flom LLP, counsel to PhoneTel, dated as of the Closing Date, to
the effect that the PhoneTel Merger, taken together with the Davel Merger, will
be treated as part of an integrated transaction that qualifies as an exchange of
property for stock as described in Section 351 of the Code and (ii) no gain or
loss will be recognized by a shareholder of PhoneTel upon the exchange of its
shares of PhoneTel Common Stock for shares of New Davel Common Stock pursuant to
the PhoneTel Merger, except with respect to cash, if any, received in lieu of a
fractional share of New Davel Common Stock. In rendering such opinion, counsel
to PhoneTel shall be entitled to rely upon usual and customary representations
of shareholders and officers of New Davel, Old Davel, PhoneTel and others.


                                 ARTICLE IX

                             TERMINATION AND WAIVER

          Section 9.01  Termination.  This Agreement may be terminated and the
                        -----------                                           
Transaction may be abandoned at any time prior to the Closing Date
(notwithstanding any approval of this Agreement and the PhoneTel Merger by the
stockholders of PhoneTel or any approval of this Agreement and the Davel Merger
by the stockholders of Old Davel as provided herein):

               (a) by mutual written consent of PhoneTel and Old Davel;

                                      -45-
<PAGE>
 
               (b) by either PhoneTel or Old Davel, if the Transaction has not
been consummated by December 7, 1998; provided that no party may terminate this
                                      --------                                 
Agreement pursuant to this subsection if such party's failure to fulfill any of
its obligations under this Agreement shall have been the reason that the Closing
shall not have occurred on or before such date;

               (c) by either PhoneTel or Old Davel, if there shall be adopted or
enacted after the date hereof any law or regulation that makes consummation of
the Transaction illegal or otherwise prohibited or if any judgment, injunction,
order or decree enjoining Old Davel or PhoneTel from consummating the
Transaction is entered and such judgment, injunction, order or decree shall have
become final and nonappealable;

               (d) by either PhoneTel or Old Davel, if (i) PhoneTel Stockholder
Approval shall not have been obtained at the PhoneTel Stockholders Meeting or
any adjournment or postponement thereof or (ii) if Davel Stockholder Approval
shall not have been obtained at the Davel Stockholders Meeting or any
adjournment or postponement thereof;

               (e) by Old Davel, if PhoneTel's Board of Directors shall (i)
withdraw, modify or change its recommendation or approval of this Agreement or
the PhoneTel Merger in a manner adverse to Old Davel or (ii) have recommended
any Acquisition Proposal other than by Old Davel, New Davel, P Sub or D Sub;

               (f) by Old Davel (provided that Old Davel is not then in breach
of its obligations hereunder in any material respect), if PhoneTel shall have
breached in any material respect any of its representations, warranties,
covenants or agreements contained herein (determined in accordance with Section
8.02(a) hereof) and shall not have cured such breach within 30 days after
PhoneTel receives written notice of such breach from Old Davel;

               (g) by PhoneTel, to allow PhoneTel to enter into an agreement in
respect of an Acquisition Proposal which PhoneTel's Board of Directors has
determined in the exercise of its fiduciary duties is more favorable to PhoneTel
and its stockholders than the Transaction (provided that the termination
                                           --------                     
described in this subsection (g) shall not be effective unless and until
PhoneTel shall have paid to Old Davel the termination fee described in Section
9.03(b) hereof); or

               (h) by PhoneTel (provided that PhoneTel is not then in breach of
its obligations hereunder in any material respect), if Old Davel shall have
breached in any material respect any of its representations, warranties,
covenants or agreements contained herein (determined in accordance with Section
8.03(a) hereof) and shall not have cured such breach within 30 days after Old
Davel receives written notice of such breach from PhoneTel.

Such right of termination shall be exercised by written notice of termination
given by the terminating party to the other parties hereto in the manner
hereinafter provided.  Any such right of termination shall not be an exclusive
remedy hereunder but shall be in addition to any other legal or equitable
remedies that may be available to any non-defaulting party hereto arising out of
any default hereunder by any other party hereto.

                                      -46-
<PAGE>
 
          Section 9.02  Waiver.  At any time prior to the Closing Date, the
                        ------                                             
parties hereto, by action taken by or pursuant to resolutions of their
respective Boards of Directors, may (a) extend the time for the performance of
any of the obligations or other acts of the parties hereto, (b) waive any
inaccuracies in the representations and warranties contained herein or in any
document delivered pursuant hereto, and (c) except for the requirements set
forth in Sections 8.01(d), (e) and (f) and except for obtaining PhoneTel
Stockholder Approval and Davel Stockholder Approval and for required filings
with the Federal Trade Commission or the Department of Justice pursuant to the
HSR Act and compliance with applicable waiting periods thereunder, waive
compliance with any of the agreements or conditions contained herein.  Any
agreement on the part of a party hereto to any such extension or waiver shall be
valid if set forth in an instrument in writing signed on behalf of such party.

          Section 9.03  Effect of Termination; Termination Fee.
                        --------------------------------------

               (a) If this Agreement is terminated pursuant to Section 9.01
hereof, this Agreement shall become void and of no effect with no liability on
the part of any party hereto, except that the agreements contained in Sections
5.08, 6.01, 9.03(b), 9.03(c), 10.05 and 10.07 hereof shall survive the
termination hereof and except that no such termination shall relieve any party
from liability for breach of this Agreement or failure by it to perform its
obligations hereunder.

               (b) If (i) Old Davel shall have terminated this Agreement
pursuant to Section 9.01(e) hereof or PhoneTel shall have terminated this
Agreement pursuant to Section 9.01(g) hereof, then in either such case, PhoneTel
shall (i) promptly, but in no event later than two business days after the date
of such termination (or, if terminated by PhoneTel pursuant to Section 9.01(g)
hereof, at the time specified in Section 9.01(g)), pay to Old Davel in same day
funds a termination fee of $3,000,000 and (ii) promptly following the receipt of
documentation with respect thereto, pay to Old Davel in same day funds an
amount, not to exceed $1,000,000, equal to the actual and reasonably documented
out-of-pocket expenses incurred by Old Davel and Equity Group Investments, Inc.
directly attributable to the proposed Transaction, including negotiation and
execution of this Agreement and the Financing.  In no event shall PhoneTel be
required to pay more than one termination fee and reimbursement of expenses
pursuant to this Section 9.03(b).

               (c) If PhoneTel or Old Davel shall have terminated this Agreement
pursuant to Section 9.01 (b) and the condition set forth in Section 8.01(i)
shall not then have been satisfied, then Old Davel shall (i) promptly, but in no
event later than two business days after the date of such termination, pay to
PhoneTel in same day funds a termination fee of $1,000,000 and (ii) promptly
following the receipt of documentation with respect thereto, pay to PhoneTel in
same day funds an amount, not to exceed $500,000, equal to the actual and
reasonably documented out-of-pocket expenses incurred by PhoneTel directly
attributable to the proposed Transaction, including negotiation and execution of
this Agreement, any redemption or purchase of the PIK Preferred Stock and the
Debt Tender.  In no event shall Old Davel be required to pay more than one
termination fee and reimbursement of expenses pursuant to this Section 9.03(c).

                                      -47-
<PAGE>
 
                                   ARTICLE X

                                 MISCELLANEOUS

          Section 10.01  Closing.  The closing of each of the PhoneTel Merger
                         -------                                             
and the Davel Merger and the Transaction (the "Closing"), including the PhoneTel
                                               -------                          
Effective Time and the Davel Effective Time, shall take place contemporaneously
as soon as practicable after the satisfaction or, where applicable, waiver of
the conditions contained in Article VIII hereof at such time and place as Old
Davel and PhoneTel shall agree.  The date on which the PhoneTel Effective Time
and the Davel Effective Time occur is referred to herein as the "Closing Date".
                                                                 ------------  

          Section 10.02  Notices.  All notices, requests and other
                         -------                                  
communications to any party hereunder shall be in writing (including facsimile,
telex or similar writing) and shall be given,

          If to Old Davel, New Davel, D Sub or P Sub, to:

          Davel Communications Group, Inc.
          1429 Massaro Boulevard
          Tampa, Florida  33619

          Attention:  Theodore C. Rammelkamp, Jr.
          Facsimile:  (813) 626-9610

          with a copy to:

          Kirkland & Ellis
          200 East Randolph Drive
          Chicago, Illinois 60601
          Attention:  R. Scott Falk
          Facsimile:  (312) 861-2200

          if to PhoneTel, to:

          PhoneTel Technologies, Inc.
          1001 Lakeside Avenue, 7/th/ Floor
          Cleveland, Ohio 44114
          Attention:  General Counsel
          Facsimile:  (216) 875-4337

          with a copy to:

          Skadden, Arps, Slate, Meagher & Flom LLP
          919 Third Avenue
          New York, New York 10022
          Attention:  Stephen M. Banker
          Facsimile:  (212) 735-2000

                                      -48-
<PAGE>
 
or such other address, telecopy or telex number as such party may hereafter
specify for the purpose by notice to the other parties hereto.  Each such
notice, request or other communication shall be effective (a) if given by
facsimile or telex, upon confirmation of receipt, or (b) if given by any other
means, when delivered at the address specified in this Section 10.02.

          Section 10.03  Survival of Representations and Warranties.  The
                         ------------------------------------------      
representations and warranties contained herein shall not survive the Closing
Date.

          Section 10.04  Amendments; No Waivers.
                         ---------------------- 

               (a) Any provision of this Agreement may be amended or waived
prior to the Closing (whether before or after approval of this Agreement by the
stockholders of Old Davel or PhoneTel, if, and only if, such amendment or waiver
is in writing and signed, in the case of an amendment, by all of the parties
hereto or in the case of a waiver, by the party against whom the waiver is to be
effective; provided that after any such approval by the stockholders of Old
           --------                                                        
Davel or PhoneTel, no such amendment or waiver shall, without the further
approval of such stockholders, alter or change (i) the amount or kind of
consideration to be received in exchange for any shares of capital stock of Old
Davel or PhoneTel, (ii) any term of the articles of incorporation of the
PhoneTel Surviving Corporation (except that alterations or changes may be made
that could otherwise be adopted by the Board of Directors of the PhoneTel
Surviving Corporation) or (iii) any of the terms or conditions of this Agreement
if such alteration or change would adversely affect the holders of any class or
series of shares of capital stock of Old Davel or PhoneTel.

               (b) No failure or delay by any party in exercising any right,
power or privilege hereunder 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. The rights and
remedies herein provided shall be cumulative and not exclusive of any rights or
remedies provided by law.

          Section 10.05  Expenses.  Except as provided in Section 9.03 hereof,
                         --------                                             
each party shall pay its own costs and expenses relating to this Agreement and
the Transaction, except that each of Old Davel and PhoneTel shall bear and pay
one-half of the costs and expenses incurred in connection with the printing and
mailing of the Proxy Statement.

          Section 10.06  Successors and Assigns.  The provisions of this
                         ----------------------                         
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns; provided that no party may assign,
                                             --------                          
delegate or otherwise transfer any of its rights or obligations under this
Agreement without the consent of the other parties hereto.

          Section 10.07  Governing Law; Jurisdiction.  This Agreement shall be
                         ---------------------------                          
construed in accordance with and governed by the law of the State of Delaware,
without giving effect to any choice of law or conflict of law rules or
provisions (whether of the State of Delaware or any other jurisdiction) that
would cause the application of the laws of any jurisdiction other than the State
of Delaware.  Each party hereto irrevocably submits to the nonexclusive
jurisdiction of (a) the state courts of Delaware and (b) the federal district
courts located in the State of Delaware for the

                                      -49-
<PAGE>
 
purposes of any suit, action or other proceeding arising out of this Agreement
or any transaction contemplated hereby.

          Section 10.08  Counterparts; Effectiveness.  This Agreement may be
                         ---------------------------                        
signed in any number of counterparts (including by means of telecopied signature
pages), each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.  This Agreement
shall become effective when each party hereto shall have received counterparts
hereof signed by all of the other parties hereto.

          Section 10.09  Headings.  Section headings used in this Agreement are
                         --------                                              
for convenience only and shall be ignored in the construction and interpretation
hereof.

          Section 10.10  No Third Party Beneficiaries.  Except for Section 6.03
                         ----------------------------                          
and 6.05(c) hereof, no provision of this Agreement is intended to, or shall,
confer any third party beneficiary or other rights or remedies upon any person
other than the parties hereto.

          Section 10.11  Entire Agreement.  This Agreement and the
                         ----------------                         
Confidentiality Agreement (including the documents and the instruments referred
to herein and therein) constitute the entire agreement and supersede all prior
agreements and understandings, both written and oral, among the parties with
respect to the subject matter hereof.

                               *   *   *   *   *

                                      -50-
<PAGE>
 
          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
 be duly executed by their respective authorized officers as of the day and year
 first above written.

                                   DAVEL COMMUNICATIONS GROUP, INC.    
                                                                       
                                                                       
                                   By   /s/ David Hill                 
                                       ------------------------------- 
                                       Name:  David Hill               
                                       Title: Chairman                 
                                                                       
                                                                       
                                   DAVEL HOLDINGS, INC.                
                                                                       
                                                                       
                                   By    /s/ David Hill                
                                        ------------------------------ 
                                        Name:  David Hill              
                                        Title: President               
                                                                       
                                                                       
                                   D SUBSIDIARY, INC.                  
                                                                       
                                                                       
                                   By    /s/ David Hill                
                                        ------------------------------ 
                                        Name:  David Hill              
                                        Title: President               
                                                                       
                                                                       
                                   PT MERGER CORP.                     
                                                                       
                                                                       
                                   By    /s/ David Hill                
                                        ------------------------------ 
                                        Name:  David Hill              
                                        Title: President               
                                                                       
                                                                       
                                   PHONETEL TECHNOLOGIES, INC.         
                                                                       
                                                                       
                                   By    /s/ Peter Graf                
                                        ------------------------------ 
                                        Name:  Peter Graf              
                                        Title: CEO                      

                                      -51-

<PAGE>
 
                                                                    EXHIBIT 10.1



                           STOCK PURCHASE AGREEMENT



                                by and between



                               SAMSTOCK, L.L.C.



                                      and



                       DAVEL COMMUNICATIONS GROUP, INC.

                              Dated May 14, 1998
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE> 
<CAPTION>                       
                                                                                                  Page(s)
<S>                                                                                               <C> 
ARTICLE I - DEFINITIONS..........................................................................      1
                                                                                                       
ARTICLE II - PURCHASE AND SALE OF SHARES.........................................................      5
         Section 2.1       Purchase and Sale.....................................................      5
         Section 2.2       Consideration.........................................................      5
                                                                                                       
ARTICLE III - THE CLOSING........................................................................      5
         Section 3.1       Time and Place........................................................      5
         Section 3.2       Deliveries by the Company.............................................      5
         Section 3.3       Deliveries by the Purchaser...........................................      6
                                                                                                       
ARTICLE IV - REPRESENTATIONS AND WARRANTIES OF THE COMPANY.......................................      6
         Section 4.1       Organization, Standing and Corporate Power............................      6
         Section 4.2       Subsidiaries..........................................................      7
         Section 4.3       Capital Structure.....................................................      7
         Section 4.4       Title to Stock and Warrants...........................................      8
         Section 4.5       Authority; Noncontravention...........................................      8
         Section 4.6       SEC Documents; Undisclosed Liabilities................................      9
         Section 4.7       Absence of Certain Changes or Events..................................     10
         Section 4.8       Litigation............................................................     10
         Section 4.9       Employee Benefit Plans; ERISA.........................................     11
         Section 4.10      Taxes.................................................................     12
         Section 4.11      Compliance with Laws..................................................     12
         Section 4.12      No Other Agreements to Sell the Company or its Assets.................     13
         Section 4.13      Contracts and Commitments.............................................     13
         Section 4.14      Insurance.............................................................     14
         Section 4.15      Affiliate Transactions................................................     14
         Section 4.16      Proxy Statement.......................................................     14
         Section 4.17      Vote Required; Recommendation of Board................................     15
         Section 4.18      Takeover Statutes.....................................................     15
         Section 4.19      Rights Agreement......................................................     15
         Section 4.20      Brokers and Finders...................................................     15
                                                                                                       
ARTICLE V - REPRESENTATIONS AND WARRANTIES OF PURCHASER..........................................     15
         Section 5.1       Organization..........................................................     16
         Section 5.2       Authority; Noncontravention...........................................     16
         Section 5.3       Investment Intent.....................................................     16
         Section 5.4       Proxy Statement.......................................................     16
         Section 5.5       Availability of Funds.................................................     17
         Section 5.6       Litigation............................................................     17
         Section 5.7       Brokers and Finders...................................................     17
</TABLE> 
<PAGE>
 
                           STOCK PURCHASE AGREEMENT

     This STOCK PURCHASE AGREEMENT is made this 14th day of May, 1998 by and
between Samstock, L.L.C., a Delaware limited liability company ("Purchaser"),
and Davel Communications Group, Inc., an Illinois corporation (the "Company").

                                  WITNESSETH:

     WHEREAS, the Company wishes to issue and sell to Purchaser, and Purchaser
wishes to purchase from the Company, 1,000,000 newly issued shares (the
"Shares") of common stock, no par value, of the Company ("Company Common Stock")
and warrants to purchase 218,750 shares of Company Common Stock (the "Warrants")
at an exercise price of $32.00 per share (which shall be exercisable through the
fourth anniversary of the Closing Date), upon the terms and subject to the
conditions of this Agreement.

     WHEREAS, concurrently herewith, Purchaser and David R. Hill ("Hill") have
entered into a Stock Purchase Agreement pursuant to which Hill has agreed to
sell to Purchaser, and Purchaser has agreed to purchase from Hill, 500,000
shares of Company Common Stock and warrants to purchase 131,250 shares of
Company Common Stock (the "Hill Stock Purchase Agreement"), upon the terms and
subject to the conditions set forth in such Agreement.

     WHEREAS, concurrently herewith, Purchaser, on the one hand, and certain
directors and members of management of the Company (the "Management
Shareholders"), on the other, have entered into a Stock Purchase Agreement
pursuant to which the Management Shareholders have agreed to sell to Purchaser,
and Purchaser has agreed to purchase form the Management Shareholders, 123,900
shares of Company Common Stock (such Agreement, together with the Hill Stock
Purchase Agreement, the "Other Stock Purchase Agreements"), upon the terms and
subject to the conditions set forth in the Management Stock Purchase Agreement.

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

                                   ARTICLE I

                                  DEFINITIONS

     Section 1.1  "Affiliate" shall mean, with respect to any person, any other
person that directly, or indirectly through one or more intermediaries, controls
or is controlled by or is under common control with such first person.  As used
in this definition "control" (including, with correlative meanings, "controlled
by" and "under common control with") shall mean the possession, directly or
indirectly, of the power to direct or cause the direction of management or
policies, whether through the ownership of securities or partnership or other
ownership interests, by contract or otherwise.
<PAGE>
 
     Section 1.2  "Agreement" shall mean this Agreement, including the Exhibits
and Schedules attached hereto and incorporated herein by this reference.

     Section 1.3  "Closing" shall have the meaning set forth in Section 3.1
hereof.

     Section 1.4  "Closing Date" shall have the meaning set forth in Section 3.1
hereof.

     Section 1.5  "Code" shall mean the Internal Revenue Code of 1986, as
amended.

     Section 1.6  "Company" shall mean Davel Communications Group, Inc., an
Illinois corporation.

     Section 1.7  "Company Common Stock" shall have the meaning set forth in the
introductory clauses hereto.

     Section 1.8  "Company Preferred Stock" shall have the meaning set forth in
Section 4.3 hereto.

     Section 1.9  "Company Stock Options" shall have the meaning set forth in
Section 4.3 hereof.

     Section 1.10 "Contracts" shall have the meaning set forth in Section 4.13
hereof.

     Section 1.11 "Disclosure Letter" shall have the meaning set forth in the
preface of Article IV hereof.

     Section 1.12 "Employee Benefit Plans" shall mean all employee benefit plans
or programs maintained for the benefit of the current or former employees or
directors of the Company or any of its Subsidiaries that are sponsored,
maintained or contributed to by the Company or any of its Subsidiaries, or with
respect to which the Company or any of its Subsidiaries has any liability that
are "employee benefit plans" as defined in Section 3(3) of ERISA.

     Section 1.13 "ERISA" shall mean the Employee Retirement Income Security Act
of 1974, as amended.

     Section 1.14 "Exchange Act" shall mean the Securities Exchange Act of 1934,
as amended.

     Section 1.15 "Filed SEC Documents" shall have the meaning set forth in
Section 4.7 hereof.

     Section 1.16 "GAAP" shall mean generally accepted accounting principles as
in effect in the United States consistently applied.

                                       2
<PAGE>
 
     Section 1.17  "Governmental Entity" shall mean any federal, state or local
government or any court, administrative agency or commission or other
governmental authority or agency.

     Section 1.18  "Hill" shall mean David R. Hill.

     Section 1.19  "Hill Stock Purchase Agreement" shall have the meaning set
forth in the introductory clauses hereto.

     Section 1.20  "HSR Act" shall mean the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended.

     Section 1.21  "Investment Agreement" shall mean the Investment Agreement
substantially in the form of Exhibit A hereto.

     Section 1.22  "IRS" shall mean the Internal Revenue Service.

     Section 1.23  "Liens" shall mean all pledges, claims, liens, charges,
encumbrances and security interests of any kind or nature whatsoever.

     Section 1.24  "Losses and Expenses" shall have the meaning set forth in
Section 10.2 hereof.

     Section 1.25  "Management Shareholders" shall have the meaning set forth in
the introductory clauses hereto.

     Section 1.26  "Material Adverse Effect" shall mean a material adverse
effect (or any development which, insofar as reasonably can be foreseen, in the
future is likely to have a material adverse effect) on the business, assets or
financial condition of the Company and its Subsidiaries, taken as a whole,
except for the impact of any order or determination by the Federal
Communications Commission or Federal appellate court concerning compensation
paid by interexchange carriers and local exchange carriers to payphone service
providers in  the Federal Communications Commission CC Docket No. 96-128,
Implementation of the Pay Telephone Reclassification and Compensation Provisions
of the Telecommunications Act of 1996.

     Section 1.27  "Material Company Subsidiary" shall mean a Subsidiary of the
Company that constitutes a significant subsidiary within the meaning of Rule 1-
02 of Regulation S-X of the SEC.

     Section 1.28  "Other Stock Purchase Agreements" shall have the meaning set
forth in the introductory clauses hereto.

     Section 1.29  "Permitted Liens" shall mean (i) Liens for Taxes that are not
yet due or delinquent or are being contested in good faith by appropriate
proceedings and for which adequate reserves have been established in accordance
with GAAP, (ii) mechanics' and other 

                                       3
<PAGE>
 
similar Liens arising in the ordinary course of business with respect to amounts
not yet overdue for a period of 45 days or amounts being contested in good faith
by appropriate proceedings if a reserve or other appropriate provision, if any,
as shall be required by GAAP shall have been made therefor, and (iii) Liens
which do not materially interfere with the use of any property or asset of the
Company or any of its Subsidiaries for its current use or which, individually or
in the aggregate, do not materially interfere with the ordinary conduct of
business of the Company and its Subsidiaries.

     Section 1.30  "person" shall mean any individual, corporation, partnership,
limited liability company, joint venture, Governmental Entity or other entity.

     Section 1.31  "Proxy Statement" shall have the meaning set forth in Section
4.5 hereof.

     Section 1.32  "Purchase Price shall have the meaning set forth in Section
2.2 hereof.

     Section 1.33  "Purchaser" shall mean Samstock, L.L.C., a Delaware limited
liability company.

     Section 1.34  "Rights Agreement" shall have the meaning set forth in
Section 4.3 hereof.

     Section 1.35  "SEC" shall mean the Securities and Exchange Commission.

     Section 1.36  "SEC Documents" shall have the meaning set forth in Section
4.6 hereto.

     Section 1.37  "Securities Act" shall mean the Securities Act of 1933, as
amended.

     Section 1.38  "Shareholder Approval" shall have the meaning set forth in
Section 4.5 hereof.

     Section 1.39  "Shareholders Agreement" shall mean the Shareholders
Agreement substantially in the form of Exhibit B hereto.

     Section 1.40  "Shares" shall have the meaning set forth in the introductory
clauses hereto.

     Section 1.41  "Subsidiary" of any person shall mean another person, an
amount of the voting securities or other voting ownership or voting partnership
interests of which is sufficient to elect at least a majority of its board of
directors or other governing body (or, if there are no such voting interests,
50% or more of the equity interests of which) is owned directly or indirectly by
such first person.

     Section 1.42  "Surviving Provisions" shall have the meaning set forth in
Section 9.2 hereof.

                                       4
<PAGE>
 
     Section 1.43  "takeover proposal" shall have the meaning set forth in
Section 6.2 hereof.

     Section 1.44  "Taxes" shall mean all federal, state, local and foreign
taxes, and other assessments of a similar nature (whether imposed directly or
through withholding), including any interest, additions to tax or penalties
applicable thereto.

     Section 1.45  "Tax Returns" shall mean all federal, state, local and
foreign tax returns, declarations, statements, reports, schedules, forms and
information returns and any amended tax return relating to Taxes.

     Section 1.46  "Warrant Agreement" shall mean an agreement to be entered
into by the Company and Purchaser pursuant to which the Company shall issue to
Purchaser the Warrants, which agreement, in form and substance, shall be
reasonably acceptable to Purchaser.

                                  ARTICLE II

                          PURCHASE AND SALE OF SHARES

     Section 2.1  Purchase and Sale.  Upon the terms and subject to the
                  -----------------                                     
conditions set forth in this Agreement, at the Closing, the Company shall issue
and sell, and Purchaser shall purchase from the Company, the Shares and the
Warrants.

     Section 2.2  Consideration.  Upon the terms and subject to the conditions
                  -------------                                                
set forth in this Agreement, at the Closing, Buyer shall pay to the Company
$28,000,000.00 (the "Purchase Price").

                                  ARTICLE III

                                  THE CLOSING

     Section 3.1  Time and Place.  Upon the terms and subject to the conditions
                  --------------                                                
set forth in this Agreement, the closing of the transactions contemplated by
this Agreement (the "Closing") shall take place at the offices of Rosenberg &
Liebentritt, P.C., Two N. Riverside Plaza, Chicago, Illinois at 10:00 a.m.
(local time) on the fifth business day following the date on which all of the
conditions to each party's obligations hereunder have been satisfied or waived
or at such other place or time as Purchaser and the Company may agree.  The date
and time at which the Closing actually occurs is hereinafter referred to as the
"Closing Date."

     Section 3.2  Deliveries by the Company.  At the Closing, the Company shall
                  -------------------------                                     
deliver the following to Purchaser:

          (a)(i)  one or more stock certificates representing the Shares issued
in the name of Purchaser; and (ii) any other documents that are necessary to
transfer to Purchaser good and marketable title to the Shares free and clear of
any Lien;

                                       5
<PAGE>
 
          (b)  a duly executed counterpart of the Investment Agreement;

          (c)  a duly executed counterpart of the Shareholders Agreement;

          (d)  a duly executed counterpart of the Warrant Agreement and any
other documents that are necessary to transfer to Purchaser good and marketable
title to the Warrants; and

          (e)  all other documents, instruments and writings required to be
delivered by the Company at or prior to the Closing Date pursuant to this
Agreement.

     Section 3.3  Deliveries by the Purchaser.  At the Closing, Purchaser shall
                  ---------------------------                                   
deliver the following to the Company:

          (a)  the Purchase Price by interbank transfer of immediately available
funds to an account designated by the Company or by such other means as may be
agreed upon in writing by the Company and Purchaser;

          (b)  a duly executed counterpart of the Investment Agreement;

          (c)  a duly executed counterpart of the Shareholders Agreement;

          (d)  a duly executed counterpart of the Warrant Agreement; and

          (e)  all other documents, instruments and writings required to be
delivered by Purchaser at or prior to the Closing Date pursuant to this
Agreement.

                                  ARTICLE IV

                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to Purchaser, except as set forth in
the Disclosure Letter delivered by the Company to Purchaser concurrently with
the execution of this Agreement (the "Disclosure Letter") by specific reference
to the relevant representation and warranty, as follows:

     Section 4.1  Organization, Standing and Corporate Power.  Each of the
                  ------------------------------------------               
Company and each of the Material Company Subsidiaries is a corporation or other
legal entity duly organized, validly existing and in good standing under the
laws of the jurisdiction in which it is organized and has the requisite power
and authority to carry on its business as now being conducted.  Each of the
Company and each of its Subsidiaries is duly qualified or licensed to do
business and is in good standing in each jurisdiction in which the nature of its
business or the ownership or leasing of its properties makes such qualification
or licensing necessary, other than in such jurisdictions where the failure to be
so qualified or licensed (individually or in the aggregate) would not have 

                                       6
<PAGE>
 
a Material Adverse Effect. The Company has delivered to Purchaser complete and
correct copies of its Articles of Incorporation and By-laws and the articles of
incorporation and by-laws or comparable organizational documents of each of the
Material Company Subsidiaries. The Company is not in violation of any provision
of its Articles of Incorporation or By-laws and no Material Company Subsidiary
is in violation of any provision of its articles of incorporation, by-laws or
comparable organizational documents, except to the extent that such violations
would not, individually or in the aggregate, have a Material Adverse Effect.

     Section 4.2  Subsidiaries.  Section 4.2 of the Disclosure Letter sets
                  ------------                                             
forth each Material Company Subsidiary and the ownership or interest therein of
the Company.  All the outstanding shares of capital stock of each Material
Company Subsidiary have been validly issued and are fully paid and nonassessable
and are owned by the Company, by another Subsidiary of the Company or by the
Company and another Subsidiary of the Company, free and clear of all Liens.
Except for the capital stock of the Company's Subsidiaries, the Company does not
own, directly or indirectly, any capital stock or other ownership interest in
any corporation, partnership, limited liability company, joint venture or other
entity.

     Section 4.3  Capital Structure.  (a)  The authorized capital stock of the
                  -----------------                                            
Company consists of 10,000,000 shares of Company Common Stock and 1,000,000
shares of preferred stock, par value $.01 per share ("Company Preferred Stock").
At the close of business on May 12, 1998, (i)(A) 4,647,809 shares of Company
Common Stock were outstanding, all of which were validly issued, fully paid and
nonassessable and (B) no shares of Junior Participating Preferred Stock were
outstanding, all of which were validly issued, fully paid and nonassessable and
(ii)(A) 58,000 shares of Company Common Stock were reserved for issuance upon
the exercise of warrants and (B) 500,350 shares of Company Common Stock were
reserved for issuance upon the exercise of outstanding stock options ("Company
Stock Options") granted pursuant to the Davel Communications Group, Inc.
Director Stock Option Plan and the Davel Communications Group, Inc. Stock Option
Plan.  Except as set forth above, at the close of business on May 14, 1998, and
except pursuant to the Rights Agreement, dated April 22, 1998, by and between
the Company and ChaseMellon Shareholder Services, L.L.C. (the "Rights
Agreement"), no shares of capital stock or other voting securities of the
Company were issued, reserved for issuance or outstanding, and, since such date,
no shares of capital stock or other voting securities or options in respect
thereof have been issued except upon the exercise of any Company Stock Options.
Except as set forth in this Section 4.3 and except for Company Stock Options
granted in the ordinary course of business to employees and directors of the
Company or its Subsidiaries and covering not in excess of an aggregate of
350,000 shares of Company Common Stock for all such grants during the period
from the date of this Agreement through the Closing Date, there are not now, and
at the Closing Date there will not be, any options, warrants, calls, rights,
commitments, agreements, arrangements or undertakings of any kind to which the
Company or any of its Subsidiaries is a party or by which any of them is bound
relating to the issued or unissued capital stock of the Company or any of its
Subsidiaries, or obligating the Company or any of its Subsidiaries to issue,
transfer, grant or sell any shares of capital stock or 

                                       7
<PAGE>
 
other equity interests in, the Company or any of its Subsidiaries or obligating
the Company or any of its Subsidiaries to issue, grant, extend or enter into any
such option, warrant, call, right, commitment, agreement, arrangement or
understanding. All shares of Company Common Stock subject to issuance as
aforesaid, upon issuance on the terms and conditions specified in the
instruments pursuant to which they are issuable, will be duly authorized,
validly issued, fully paid and nonassessable. Except as set forth in the Rights
Agreement, there are not any outstanding contractual obligations of the Company
or any of its Subsidiaries to repurchase, redeem or otherwise acquire any shares
of capital stock of the Company or any of its Subsidiaries, or make any material
investment (in the form of a loan, capital contribution or otherwise) in, any of
the Company's Subsidiaries or any other person.

     Section 4.4  Title to Stock and Warrants.  The Shares and the Warrants,
                  ---------------------------                                
upon issuance on the terms and conditions set forth in this Agreement, will be
duly authorized, validly issued, fully paid and nonassessable.  At the Closing,
Purchaser will acquire good and marketable title to the Shares and the Warrants,
free and clear of all Liens.  Upon issuance of shares of Company Common Stock
pursuant to the Warrants, such shares will be duly authorized, validly issued,
fully paid and nonassessable, and Purchaser will acquire good and marketable
title to such shares.

     Section 4.5  Authority; Noncontravention.  The Company has the requisite
                  ---------------------------                                 
corporate power and authority to enter into this Agreement and, subject to the
approval of the issuance of the Shares by the holders of Company Common Stock
("Shareholder Approval"), to consummate the transactions contemplated by this
Agreement.  The execution and delivery of this Agreement by the Company and the
consummation by the Company of the transactions contemplated by this Agreement
have been duly authorized by all necessary corporate action on the part of the
Company, subject to Shareholder Approval.  This Agreement has been duly executed
and delivered by the Company and constitutes a valid and binding obligation of
the Company, enforceable against the Company in accordance with its terms,
subject to general principles of equity and as may be limited by bankruptcy,
insolvency, moratorium  or similar laws affecting creditors' rights generally.
The execution and delivery of this Agreement by the Company do not, and the
consummation of the transactions contemplated by this Agreement and compliance
with the provisions of this Agreement will not, conflict with, or result in any
violation of, or default (with or without notice or lapse of time, or both)
under, or give rise to a right of termination, cancellation or acceleration of
any obligation or to loss of a material benefit under, or result in the creation
of any Lien upon any of the properties or assets of the Company or any of its
Subsidiaries under (i) the Articles of Incorporation or By-laws of the Company
or the comparable organizational documents of any of the Company's Subsidiaries,
(ii) any loan or credit agreement, note, bond, mortgage, indenture, lease or
other agreement, instrument, permit, concession, franchise or license applicable
to the Company or any of the Material Company Subsidiaries or their respective
properties or assets or (iii) subject to the governmental filings and other
matters referred to in the following sentence, any judgment, order, decree,
statute, law, ordinance, rule or regulation applicable to the Company or any of
the Material Company 

                                       8
<PAGE>
 
Subsidiaries or their respective properties or assets of which the Company is
aware, other than, in the case of clauses (ii) and (iii), any such conflicts,
violations, defaults, rights or Liens, that individually or in the aggregate,
would not (x) have a Material Adverse Effect, (y) prevent the Company from
performing its obligations under this Agreement in any material respect or (z)
prevent or delay in any material respect the consummation of the transactions
contemplated by this Agreement. No consent, approval, order or authorization of,
or registration, declaration or filing with, any Governmental Entity, is
required by or with respect to the Company or any of the Material Company
Subsidiaries in connection with the execution and delivery of this Agreement by
the Company or the consummation by the Company of the transactions contemplated
by this Agreement, except (i) the filing of a notification and report form by
Hill as the ultimate parent entity of the Company under the HSR Act, (ii) the
filing with the SEC of a proxy statement relating to the meeting of the
Company's shareholders to be held in connection with the transactions
contemplated by this Agreement (together with any amendments or supplements
thereto, the "Proxy Statement") and such reports under Section 13(a) of the
Exchange Act as may be required in connection with this Agreement and the
transactions contemplated by this Agreement and (iii) such other consents,
approvals, orders, authorizations, registrations, declarations and filings
which, if not obtained or made, would not prevent or delay in any material
respect the consummation of the transactions contemplated by this Agreement or
otherwise prevent the Company from performing its obligations under this
Agreement in any material respect or have, individually or in the aggregate, a
Material Adverse Effect.

     Section 4.6  SEC Documents; Undisclosed Liabilities.  To its knowledge,
                  --------------------------------------                     
the Company has filed all required reports, schedules, forms, statements and
other documents with the SEC since December 31, 1994 (as such documents have
been amended prior to the date hereof, the "SEC Documents").  As of their
respective dates, the SEC Documents complied in all material respects with the
requirements of the Securities Act or the Exchange Act, as the case may be, and
the rules and regulations of the SEC promulgated thereunder applicable to such
SEC Documents, and none of the SEC Documents contained any untrue statement of a
material fact or omitted to state a 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, except to the extent
such statements have been modified or superseded by a later Filed SEC Document.
The consolidated financial statements of the Company included in the SEC
Documents have been prepared in accordance with GAAP (except, in the case of
unaudited statements, as permitted by Form 10-Q of the SEC) applied on a
consistent basis during the periods involved (except as may be indicated in the
notes thereto) and fairly present the consolidated financial position of the
Company and the consolidated Subsidiaries of the Company as of the dates thereof
and the consolidated results of operations and cash flows for the periods then
ended (subject, in the case of unaudited statements, to normal year-end audit
adjustments and the absence of footnotes).  Except as set forth in the Filed SEC
Documents and for liabilities incurred in the ordinary course of business after
the date hereof or incurred as permitted by this Agreement, neither the Company
nor any of the Company's Subsidiaries has any liabilities or obligations of any
nature (whether accrued, absolute, contingent or otherwise) required by GAAP to
be set forth on a 

                                       9
<PAGE>
 
consolidated balance sheet of the Company and its consolidated Subsidiaries or
in the notes thereto and which, individually or in the aggregate, could
reasonably be expected to have a Material Adverse Effect.

     Section 4.7  Absence of Certain Changes or Events.  Except as disclosed in
                  ------------------------------------                          
the SEC Documents filed and publicly available prior to the date of this
Agreement (the "Filed SEC Documents") or as specifically permitted by this
Agreement, since the date of the most recent audited financial statements
included in the Filed SEC Documents, the Company has conducted its business only
in the ordinary course, and there has not been:

          (a)  any change or effect (or any development that, insofar as can
reasonably be foreseen, is likely to result in a change or effect) which,
individually or in the aggregate, has had or would reasonably be expected to
have, a Material Adverse Effect;

          (b)  any declaration, setting aside or payment of any dividend or
other distribution (whether in cash, stock or property) with respect to any of
the Company's capital stock;

          (c)  any split, combination or reclassification of any of the
Company's capital stock or any issuance or the authorization of any issuance of
any other securities in exchange or in substitution for shares of the Company's
capital stock;

          (d)  (i) any granting by the Company or any of its Subsidiaries to any
executive officer of the Company or any such Subsidiary of any increase in
compensation, except in the ordinary course of business consistent with prior
practice or as was required under employment agreements in effect as of the date
hereof, (ii) any granting by the Company or any of its Subsidiaries to any such
executive officer of any increase in severance or termination pay, except as was
required under any employment, severance or termination agreements in effect as
of the date hereof or (iii) any entry by the Company or any of its Subsidiaries
into any employment, severance or termination agreement with any such executive
officer;

          (e)  any damage destruction or loss, not covered by insurance, that
has had or would reasonably be expected to have a Material Adverse Effect; or

          (f)  any change in accounting methods, principles or practices by the
Company or any Material Company Subsidiary materially and adversely affecting
its assets, liabilities or business, except insofar as may have been required by
a change in GAAP.

     Section 4.8  Litigation.  Except as disclosed in the Filed SEC Documents,
                  ----------                                                   
there is no suit, action or proceeding pending or, to the knowledge of the
Company, threatened against or affecting the Company or any of its Subsidiaries
that, individually or in the aggregate, would reasonably be expected to (i) have
a Material Adverse Effect, (ii) prevent the Company from performing its
obligations under this Agreement in any material respect or (iii) prevent or
delay in any material respect the consummation of the transactions contemplated
by this Agreement, 

                                      10
<PAGE>
 
and there is not any judgment, decree, injunction, rule or order of any
Governmental Entity or arbitrator outstanding against the Company or any of its
Subsidiaries that has had or would reasonably be expected to have, a Material
Adverse Effect.

     Section 4.9  Employee Benefit Plans; ERISA.  (a)  With respect to each
                  -----------------------------                             
Employee Benefit Plan:  (i) each Employee Benefit Plan has been administered in
compliance in all material respects with its terms including any provisions
relating to contributions thereunder, and is in compliance in all material
respects with the applicable provisions of ERISA, the Code and all other
federal, state and other applicable laws, rules and regulations, as they relate
to such Employee Benefit Plans (including funding, filing, termination,
reporting, disclosure and continuation coverage obligations pursuant to Title V
of the Consolidate Omnibus Budget Reconciliation Act of 1985, as amended; (ii)
no "employee pension benefit plan" (as defined in Section 3(2) of ERISA) has
been the subject of a "reportable event" (as defined in Section 4043 of ERISA)
and there have been no non-exempt "prohibited transactions" (as described in
Section 4975 of the Code or in Part 4 of Subtitle I of ERISA) with respect to
any Employee Benefit Plan; (iii) each Employee Benefit Plan which is intended to
be "qualified" within the meaning of Section 401(a) of the Code is so qualified,
and any trust created pursuant to any such Employee Benefit Plan is exempt from
federal income tax under Section 501(a) of the Code and the IRS has issued each
such Employee Benefit Plan a favorable determination letter which, to the
Company's knowledge, is currently applicable, except to the extent such failure
to be qualified, exempt or applicable, would not, individually or in the
aggregate, be reasonably likely to have a Material Adverse Effect; (iv) the
Company is not aware of any circumstances or event which would be reasonably
likely to jeopardize the tax-qualified status of any such Employee Benefit Plan
or the tax-exempt status of any related trust, or would cause the imposition of
any liability, penalty or tax under ERISA or the Code with respect to any
Employee Benefit Plan; (v) no material unsatisfied liabilities to participants,
the IRS, the United States Department of Labor, the Pension Benefit Guaranty
Corporation or to any other person or entity have been incurred as a result of
the termination of any Employee Benefit Plan; and (vi) there has been no event
with respect to an Employee Benefit Plan which would require disclosure under
Section 4062(c), 4063(a) or 4041(e) of ERISA.

          (b)  No Employee Benefit Plan would result in the payment to any
employee, officer or director of the Company or any of its Subsidiaries of any
money or other property or rights or accelerate or provide any other rights or
benefits to any such employee, officer or director as a direct result of the
transactions contemplated by this Agreement.

          (c)  Except as disclosed in the Filed SEC Documents, since the date of
the most recent audited financial statements included in the most recent Filed
SEC Documents, there has not been any adoption or amendment in any material
respect by the Company or any of its Subsidiaries of any Employee Benefit Plan
or collective bargaining agreement providing benefits to any current or former
employee, officer or director of the Company or any of its Subsidiaries.

                                      11
<PAGE>
 
          (d)  The Company has not promised or vested, by plan document or
written or oral communication, the right of any employee, former employee,
retiree, beneficiary or other person to lifetime benefits under any "employee
welfare benefit plan" within the meaning of Section 3(1) of ERISA.

          (e)  No Employee Benefit Plan excludes from participation in such plan
any individual performing services for the Company or an ERISA Affiliate on the
basis of such individual's status as an independent contractor, unless such
individual actually meets the requirements for status as an independent
contractor based on Internal Revenue Service Revenue Ruling 87-41, 1987-1 C.B.
296, except to the extent any such exclusion would not, individually or in the
aggregate, be reasonably likely to have a Material Adverse Effect.

          (f)  No "employee pension benefit plan" (as defined in Section 3(2) of
ERISA) is a multi-employer plan within the meaning of Sections 3(37) or
4001(a)(3) of ERISA.  The Company has not withdrawn or partially withdrawn from
any multi-employer plan, or has any liability, jointly or otherwise, for any
withdrawal liability demanded or yet to be demanded under Title IV of ERISA by
any multi-employer plan for a complete or partial withdrawal.

     Section 4.10  Taxes.  (a) The Company and each of its Subsidiaries have
                   -----                                                     
timely filed (or have had timely filed on their behalf) or will file or cause to
be timely filed, all material Tax Returns required by applicable law to be filed
by any of them prior to or as of the Closing Date.  All such Tax Returns are, or
will be at the time of filing, true, complete and correct in all material
respects, except where the failure to be true, complete and correct would not be
reasonably likely to have a Material Adverse Effect.

          (b)  The Company and each of its Subsidiaries have paid (or have had
paid on their behalf), or where payment is not yet due, have established (or
have had established on their behalf and for their sole benefit and recourse),
or will establish or cause to be established on or before the Closing Date, an
adequate accrual for the payment of, all material Taxes due with respect to any
period ending prior to or as of the Closing Date.  The Company and each of its
Subsidiaries have made all material deposits required by law to be made with
respect to employee withholding and other employment Taxes.

          (c)  No audit by any Governmental Entity is presently in progress, or,
to the knowledge of the Company, threatened, with respect to any Tax Returns
filed by, or Taxes due from the Company or any of its Subsidiaries.  There are
no Tax Liens other than Permitted Liens on any of the assets or properties of
the Company or any of its Subsidiaries.

     Section 4.11  Compliance with Laws.  Neither the Company nor any of its
                   --------------------                                      
Subsidiaries has violated or failed to comply with any statute, law, ordinance,
regulation, rule, judgment, decree or order of any Governmental Entity
applicable to its business or operations, except for violations and failures to
comply that could not, individually or in the aggregate, reasonably be expected
to result in a Material Adverse Effect.

                                      12
<PAGE>
 
     Section 4.12  No Other Agreements to Sell the Company or its Assets.
                   -----------------------------------------------------   
Other than this Agreement, the Company has no legal obligation, absolute or
contingent, to any other person to sell any material portion of the assets or
properties of the Company or any of its Subsidiaries, to sell any material
portion of the capital stock or other ownership interests of the Company or any
of its Subsidiaries or to effect any merger, consolidation or other
reorganization of the Company or any of its Subsidiaries or to enter into any
agreement with respect thereto.

     Section 4.13  Contracts and Commitments.  (a)  Section 4.13 of the
                   -------------------------                            
Disclosure Letter contains a complete and accurate list of all written
contracts, plans or agreements ("Contracts") of the following categories to
which the Company or any of its Subsidiaries is a party or by which any of them
is bound as of the date of this Agreement:

               (i)   employment Contracts pursuant to which any person receives
          annual compensation in excess of $125,000, including contracts to
          employ executive officers and other contracts with officers, directors
          or shareholders of the Company, and all severance, change in control
          or similar arrangements with any executive officers of the Company;

               (ii)  Contracts with executive officers of the Company or any of
          its Subsidiaries pursuant to which any such officer or employee would
          be entitled to receive any severance, change in control or similar
          payment upon Hill ceasing to own a stated amount or percentage of
          outstanding Company Common Stock or other voting securities of the
          Company, (whether or not the receipt of such payment by any such
          executive officer would also require the termination of employment of
          such executive officer);

               (iii) promissory notes, loans, agreements, indentures, evidences
          of indebtedness or other instruments providing for the lending of
          money, whether as borrower, lender or guarantor, in excess of $1
          million;

               (iv)  Contracts for the purchase of inventory or equipment which
          are not cancelable (without material penalty, cost or other liability)
          within one year and other Contracts, whether or not made in the
          ordinary course of business, involving annual expenditures or
          liabilities in excess of $2 million which are not cancelable (without
          material penalty, cost or other liability) within 90 days;

               (v)   Contracts pursuant to which the Company or any of its
          Subsidiaries receives annual revenues in excess of $1,000,000;

               (vi)  Contracts containing covenants limiting the freedom of the
          Company or any of the Material Company Subsidiaries to engage in any
          line of business or compete with any person;

                                       13
<PAGE>
 
               (vii)  any Contract restricting the ownership or voting of the
          capital stock of the Company or any of its Subsidiaries, other than as
          contemplated by this Agreement or the exhibits hereto;

               (viii) joint venture or partnership agreements; and

               (ix)   any Contract pending for the acquisition, directly or
          indirectly (by merger or otherwise) of material assets or capital
          stock of another person.

True and complete copies of the written Contracts identified in Section 4.13 of
the Disclosure Letter have been delivered or made available to Purchaser or its
representatives.

     Section 4.14  Insurance.  All material fire and casualty, general
                   ---------                                          
liability, business interruption, product liability, workers' compensation,
vehicular and other insurance policies maintained by the Company or any of its
Subsidiaries are with reputable insurance carriers, provide adequate coverage
for normal risks incident to the businesses of the Company and its Subsidiaries
and their respective properties and assets, and are in character and amount
substantially equivalent to that carried by persons engaged in similar
businesses and subject to the same or similar perils or hazards, except for any
such failures to maintain insurance policies that, individually or in the
aggregate, would not reasonably be expected to have a Material Adverse Effect.

     Section 4.15  Affiliate Transactions.  Except as set forth in the Filed
                   ----------------------                                    
SEC Documents, from December 31, 1997 through the date of this Agreement there
have been no transactions, agreements, arrangements or understandings between
the Company or any of its Subsidiaries, on the one hand, and Affiliates of the
Company or any of it Subsidiaries or other persons, on the other hand, that
would be required to be disclosed under Item 404 of Regulation S-K under the
Securities Act.

     Section 4.16  Proxy Statement.  None of the information included or
                   ---------------                                       
incorporated by reference by the Company in the Proxy Statement, will, at the
date it is first mailed to the Company's shareholders and at the time of the
meeting of the Company's shareholders held for the purpose of obtaining
Shareholder Approval, contain any untrue statement of 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 are
made, not misleading, except that no representation is made by the Company with
respect to statements made therein based on information supplied by Purchaser
and its Affiliates for inclusion in the Proxy Statement.  The Proxy Statement
will comply in all material respects with the requirements of the Exchange Act
and the rules and regulations thereunder, except that no representation is made
by the Company with respect to statements made therein based on information
supplied by Purchaser and its Affiliates for inclusion in the Proxy Statement.

                                       14
<PAGE>
 
     Section 4.17  Vote Required; Recommendation of Board.  The affirmative
                   --------------------------------------                   
vote of a majority of the outstanding shares of Company Common Stock is the only
vote of the holders of any class or series of the Company's capital stock
necessary to approve the issuance of the Shares by the Company to Purchaser as
contemplated by this Agreement.  The Board of Directors of the Company, or an
authorized Committee of such Board, at a meeting duly called and held has (i)
unanimously approved this Agreement and the transactions contemplated hereby,
(ii) determined that the transactions contemplated by this Agreement are fair to
the Company and its shareholders and (iii) resolved to recommend to such holders
that they approve the issuance of the Shares by the Company to Purchaser as
contemplated by this Agreement and that such matter be submitted to the
Company's shareholders.  The Company hereby agrees to the inclusion in the Proxy
Statement of the recommendations of the Board of Directors of the Company
described in this Section 4.17.

     Section 4.18  Takeover Statutes.  To the knowledge of the Company, no
                   -----------------                                       
"fair price," "moratorium," "control share acquisition" or other similar anti-
takeover statute or regulation enacted under state or federal law applicable to
the Company is applicable to the transactions contemplated by this Agreement.

     Section 4.19  Rights Agreement.  The Company's Board of Directors has
                   ----------------                                        
taken all necessary action to provide that Purchaser will not become an
"Acquiring Person," that no "Triggering Event, "Share Acquisition Date" or
"Distribution Date" (as such terms are defined in the Rights Agreement), will
occur, and that the Rights Agreement will not be applicable to the execution or
delivery of this Agreement or any amendment hereto or the consummation of the
transactions contemplated by this Agreement.  The Company has provided to
Purchaser written evidence, reasonably satisfactory to Purchaser, of the
foregoing.

     Section 4.20  Brokers and Finders.  No broker, investment banker,
                   -------------------                                 
financial advisor or other person is entitled to any broker's, finder's,
financial advisor's or other similar fee or commission in connection with the
transactions contemplated by this Agreement based upon arrangements made by or
on behalf of the Company.  The fees incurred and to be incurred by the Company
in connection with this Agreement and the transactions contemplated by this
Agreement for the persons listed in Section 4.20 of the Disclosure Letter are
set forth in Section 4.20 of the Disclosure Letter.  The Company has furnished
to Purchaser true and complete copies of all the agreements referred to in
Section 4.20 of the Disclosure Letter and all indemnification and other
agreements related to the engagement of the persons so listed.

                                   ARTICLE V

                  REPRESENTATIONS AND WARRANTIES OF PURCHASER

     Purchaser hereby represents and warrants to the Company as follows:

                                       15
<PAGE>
 
     Section 5.1  Organization.  Purchaser is a limited liability company duly
                  ------------                                                 
organized, validly existing and in good standing under the laws of the
jurisdiction in which it is organized.

     Section 5.2  Authority; Noncontravention.  Purchaser has the requisite
                  ---------------------------                               
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement.  The execution and delivery of this
Agreement by Purchaser and the consummation by Purchaser of the transactions
contemplated by this Agreement have been duly authorized by all necessary action
on the part of Purchaser.  This Agreement has been duly executed and delivered
by Purchaser and constitutes a valid and binding obligation of Purchaser,
enforceable against Purchaser in accordance with its terms, subject to general
principles of equity and as may be limited by bankruptcy, insolvency, moratorium
or similar laws affecting creditors' rights generally.  The execution and
delivery of this Agreement by Purchaser do not, and the consummation of the
transactions contemplated by this Agreement and compliance with the provisions
of this Agreement will not, conflict with, or result in any violation of, or
default (with or without notice or lapse of time, or both) under (i) the
organizational documents of Purchaser or (ii) subject to the governmental
filings and other matters referred to in the following sentence, any judgment ,
order, decree, statute, law, ordinance, rule or regulation applicable to
Purchaser or its properties or assets, other than, in the case of clause (ii),
any such conflicts, violations or defaults that, individually or in the
aggregate, would not (x) prevent Purchaser from performing its obligations under
this Agreement in any material respect or (y) prevent or delay in any material
respect the consummation of the transactions contemplated by this Agreement.  No
consent, approval, order or authorization of, or registration, declaration or
filing with, any Governmental Entity, is required by or with respect to
Purchaser in connection with the execution and delivery of this Agreement by
Purchaser or the consummation by Purchaser of the transactions contemplated by
this Agreement, except (i) the filing of a notification and report form by
Purchaser under the HSR Act and (ii) such other consents, approvals, orders,
authorizations, registrations, declarations and filings which, if not obtained
or made, would not prevent or delay in any material respect the consummation of
the transactions contemplated by this Agreement or otherwise prevent Purchaser
from performing its obligations under this Agreement in any material respect.

     Section 5.3  Investment Intent.  Purchaser is purchasing the Shares for
                  -----------------                                          
investment, and not with a view toward, or for sale in connection with, any
distribution thereof, nor with any present intention of distributing or selling
the Shares.  Purchaser is an "accredited investor" as defined in Rule 501 of
Regulation D adopted by the SEC under the Securities Act.

     Section 5.4  Proxy Statement.  None of the information supplied by
                  ---------------                                       
Purchaser for inclusion in the Proxy Statement will, at the date it is first
mailed to the Company's shareholders and at the time of the meeting of the
Company's shareholders held for the purpose of obtaining Shareholder Approval,
contain any untrue statement of 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 are made, not
misleading.

                                       16
<PAGE>
 
     Section 5.5  Availability of Funds.  Purchaser has sufficient funds
                  ---------------------                                  
available to pay the Purchase Price on the Closing Date.

     Section 5.6  Litigation.  There is no suit, action or proceeding pending
                  ----------                                                  
or, to the knowledge of Purchaser, threatened against or affecting Purchaser
that, individually or in the aggregate, would reasonably be expected to (i)
prevent Purchaser from performing its obligations under this Agreement in any
material respect or (ii) prevent or delay in any material respect the
consummation of the transactions contemplated by this Agreement.

     Section 5.7  Brokers and Finders.  No broker, investment banker, financial
                  -------------------                                           
advisor or other person is entitled to any broker's, finder's, financial
advisor's or other similar fee or commission in connection with the transactions
contemplated by this Agreement based upon arrangements made by or on behalf of
Purchaser.

                                  ARTICLE VI

                              CONDUCT OF BUSINESS

     Section 6.1  Conduct of Business.  During the period from the date of this
                  -------------------                                           
Agreement to the Closing Date, the Company shall, and shall cause each of its
Subsidiaries to, carry on their respective businesses in the usual, regular and
ordinary course in substantially the same manner as heretofore conducted and in
compliance in all material respects with all applicable laws and regulations
and, to the extent consistent therewith, use commercially reasonable efforts to
preserve intact their current business organizations, keep available the
services of their current officers and employees and preserve their
relationships with customers, suppliers and others having business dealings with
them. Without limiting the generality of the foregoing, during the period from
the date of this Agreement to the Closing Date, the Company shall not, and shall
not permit any of its Subsidiaries to:

               (i)  (x) declare, set aside or pay any dividends on, or make any
          other distributions in respect of, any of its capital stock, other
          than dividends and distributions by a direct or indirect wholly owned
          Subsidiary of the Company to its parent, (y) split, combine or
          reclassify any of its capital stock or issue or authorize the issuance
          of any other securities in respect of, in lieu of or in substitution
          for shares of its capital stock, or (z) purchase, redeem or otherwise
          acquire any shares of capital stock of the Company or any of its
          Subsidiaries or any other securities thereof or any rights, warrants
          or options to acquire any such shares or other securities;

               (ii) issue, deliver, sell, pledge or otherwise encumber any
          shares of its capital stock, any other voting securities or any
          securities convertible into, or any rights, warrants or options to
          acquire, any such shares, voting securities or 

                                       17
<PAGE>
 
          convertible securities (other than the issuance of shares of Company
          Common Stock reserved for issuance as described in the second sentence
          of Section 4.3);

               (iii)  amend its articles of incorporation, by-laws or comparable
          organizational documents in a manner that would be reasonably likely
          to adversely affect Purchaser;

               (iv)   acquire or agree to acquire (x) by merging or
          consolidating with, or by purchasing a substantial portion of the
          assets of, or by any other manner, any business or any corporation,
          partnership, limited liability company, joint venture, association or
          other business organization or division thereof other than
          acquisitions not exceeding $50 million in the aggregate or (y) any
          assets that are material, individually or in the aggregate, to the
          Company and its Subsidiaries taken as a whole;

               (v)    enter into any agreement with respect to a takeover
          proposal;

               (vi)   sell, lease, license, mortgage or otherwise encumber or
          subject to any Lien (other than Permitted Liens) or otherwise dispose
          of any of its properties or assets, other than in the ordinary course
          of business;

               (vii)  (y) incur any indebtedness for borrowed money or guarantee
          any such indebtedness of another person, issue or sell any debt
          securities or warrants or other rights to acquire any debt securities
          of the Company or any of its Subsidiaries, guarantee any debt
          securities of another person, enter into any "keep well" or other
          agreement to maintain any financial statement condition of another
          person or enter into any arrangement having the economic effect of any
          of the foregoing, except as otherwise permitted by the Company's
          existing senior credit facility, or (z) make any loans, advances
          (other than advances to employees in the ordinary course of business
          consistent with prior practice) or capital contributions to, or
          investments in , any other person, other than to the Company or any
          direct or indirect wholly owned Subsidiary of the Company;

               (viii) make or agree to make any new capital expenditures outside
          the ordinary course of business which, in the aggregate, exceed $2.5
          million;

               (ix)   except in the ordinary course of business pursuant to
          existing employment agreements or Employee Benefit Plans, as described
          in the Disclosure Letter or as required by applicable laws, (A)
          increase the compensation payable or to become payable to its
          executive officers or employees, (B) grant any severance or
          termination pay to, or enter into any employment or severance
          agreement with, any director, executive officer or employee of the
          Company or 

                                       18
<PAGE>
 
          any of its Subsidiaries or (C) establish, adopt, enter into or amend
          in any material respect or take action to accelerate any rights or
          benefits under any collective bargaining agreement or any Employee
          Benefit Plan, except as contemplated by this Agreement;

               (x)  without limiting the generality of clause (ix) above, make
          any amendment to any Employee Benefit Plan solely as a result of this
          Agreement or in contemplation of the issuance of Shares contemplated
          by this Agreement; or

               (xi) authorize any of, or commit or agree to take any of, the
          foregoing actions.

     Section 6.2  No Solicitation.  (a)  The Company shall not, nor shall it
                  ---------------                                            
permit any of its Subsidiaries to, nor shall it authorize any officer, director
or employee of or any investment banker, attorney or other advisor or
representative of, the Company or any of the Company's Subsidiaries to, (i)
solicit, initiate or encourage the submission of any takeover proposal (as
defined below), (ii) enter into any agreement with respect to any takeover
proposal or (iii) participate in any discussions or negotiations regarding, or
furnish to any person any information with respect to, or take any other action
to facilitate any inquiries or the making of any proposal that constitutes, or
may reasonably be expected to lead to, any takeover proposal; provided; however,
                                                              --------  ------- 
that the Company or its Board of Directors may comply with Rule 14e-2
promulgated under the Exchange Act with regard to a takeover proposal.  Without
limiting the foregoing, it is understood that any violation of the restrictions
set forth in the preceding sentence by any executive officer of the Company or
any of the Company's Subsidiaries or any investment banker, attorney or other
advisor or representative of the Company or any of the Company's Subsidiaries at
the direction of the Company or acting within the scope of his, her or its
authority, whether or not such person is purporting to act on behalf of the
Company or any of the Company's Subsidiaries or otherwise, shall be deemed to be
a breach of this Section 6.2(a) by the Company.  For purposes of this Agreement,
"takeover proposal" means any proposal for a merger, consolidation or other
business combination involving the Company or any of its Subsidiaries or any
proposal or offer to acquire from the Company or Hill in any manner, directly or
indirectly, more than 10% of any class of voting securities of the Company or
any of the Company's Subsidiaries, or assets representing more than 20% of the
total assets of the Company and its Subsidiaries, taken as a whole, as reflected
on the Company's balance sheet as of March 31, 1998, other than the transactions
contemplated by this Agreement.  The Company will immediately cease and cause to
be terminated any existing activities, discussions or negotiations by the
Company or any of its officers, investment bankers, attorneys or other advisors
or representatives with any parties conducted heretofore on the Company's behalf
with respect to any of the foregoing.

          (b)  Neither the Board of Directors of the Company nor any committee
thereof shall (i) withdraw or modify, or propose to withdraw or modify, in a
manner adverse to 

                                       19
<PAGE>
 
Purchaser, the adoption, approval or recommendation by the Company's Board of
Directors or any such committee of this Agreement or (ii) approve or recommend,
or propose to approve or recommend, any takeover proposal.

          (c)  The Company promptly shall advise Purchaser orally and in writing
of any takeover proposal or any inquiry with respect to or which could lead to
any takeover proposal and the identity of the person making any such takeover
proposal or inquiry.  The Company will keep Purchaser promptly and fully
informed in all material respects of the status and details of any such takeover
proposal or inquiry.

                                  ARTICLE VII
                                        
                             ADDITIONAL AGREEMENTS

     Section 7.1  Proxy Statement; Shareholder Meeting.  (a)  As soon as
                  ------------------------------------                   
practicable following the date of this Agreement, the Company shall prepare and
file with the SEC the Proxy Statement.  The Company will use its reasonable best
efforts to cause the Proxy Statement to be mailed to the Company's shareholders
as promptly as practicable thereafter.

          (b)  The Company will, as soon as practicable following SEC clearance
of the Proxy Statement, duly call, give notice of, convene and hold a meeting of
its shareholders for the purpose of obtaining Shareholder Approval.  The Company
will, through its Board of Directors, recommend to its shareholders approval of
the issuance of the Shares by the Company to Purchaser, as contemplated by this
Agreement.  Without limiting the generality of the foregoing, the Company agrees
that its obligations pursuant to the first sentence of this Section 7.1(b) shall
not be altered by the commencement, public proposal, public disclosure or
communication to the Company of any takeover proposal.

     Section 7.2  Access to Information.  The Company shall, and shall cause
                  ---------------------                                      
each of its Subsidiaries to, afford to Purchaser and to the officers, employees,
accountants, counsel, financial advisors and other representatives of Purchaser,
reasonable access during normal business hours during the period prior to the
Closing Date to all their respective properties, books, contracts, commitments,
personnel and records and, during such period, the Company shall, and shall
cause each of its Subsidiaries to, furnish promptly to Purchaser (a) a copy of
each report, schedule, registration statement or other document filed by it
during such period pursuant to the requirements of federal or state securities
laws and (b) all other information concerning its business, properties and
personnel as Purchaser may reasonably request.

     Section 7.3  Further Action.  Upon the terms and subject to the
                  --------------                                     
satisfaction of the conditions contained in this Agreement, each of the parties
hereto shall use its reasonable best efforts to take, or cause to be taken, all
appropriate action, and to do or cause to be done, all things necessary, proper
or advisable under applicable laws and regulations to consummate and 

                                       20
<PAGE>
 
make effective the transactions contemplated by this Agreement. From time to
time after the Closing Date, without further consideration, the Company will, at
its own expense, execute and deliver such documents to Purchaser as Purchaser
may reasonably request in order more effectively to vest in Purchaser good and
marketable title to the Shares.

     Section 7.4  Notification of Certain Matters.  The Company shall give
                  -------------------------------                          
prompt notice to Purchaser, and Purchaser shall give prompt notice to the
Company, of (i) the occurrence or nonoccurrence of any event the occurrence or
nonoccurrence of which would be likely to cause any representation or warranty
contained in this Agreement to be untrue or inaccurate and (ii) any failure of
the Company or Purchaser, as the case may be, to comply with or satisfy any
covenant, condition or agreement to be complied with or satisfied by it
hereunder; provided, however, that the delivery of any notice pursuant to this
Section 7.4 shall not limit or otherwise affect the remedies available hereunder
to the party receiving such notice.

     Section 7.5  Public Announcements. The Company and Purchaser shall consult
                  --------------------
with each other before issuing any press release or otherwise making any public
statements with respect to this Agreement or the transactions contemplated
hereby and shall not issue any such press release or make any such public
statement prior to such consultation, except as may be required by law or by the
rules and regulations of the National Association of Securities Dealers, Inc.

     Section 7.6  Investment Agreement. The Company and Purchaser shall execute
                  --------------------
and deliver each of the Investment Agreement and the Shareholders Agreement at
or prior to the Closing.

     Section 7.7  Fees and Expenses. All fees and expenses incurred in
                  -----------------
connection with the transactions contemplated by this Agreement shall be paid by
the party incurring such fees or expenses, whether or not such transactions are
consummated.

                                 ARTICLE VIII

                                  CONDITIONS

     Section 8.1  Conditions to Each Party's Obligation.  The respective
                  -------------------------------------                  
obligation of each party to effect the transactions contemplated by this
Agreement is subject to the satisfaction or waiver at or prior to the Closing
Date of the following conditions:

          (a)  Shareholder Approval.  The Company shall have obtained
               --------------------                                  
     Shareholder Approval.

          (b)  Antitrust.  The waiting periods (and any extensions thereof)
               ---------                                                   
     applicable to the transactions contemplated by this Agreement under the HSR
     Act shall have been terminated or shall have expired.

                                       21
<PAGE>
 
          (c)  No Injunctions or Restraints.  No statute, rule, regulation,
               ----------------------------                                
     executive order, decree, ruling, injunction or other order (whether
     temporary, preliminary or permanent) shall have been enacted, promulgated
     or enforced by any Governmental Entity of competent jurisdiction which
     prohibits, restrains, enjoins or restricts the consummation of the
     transactions contemplated by this Agreement; provided, however, that each
     of the parties shall have used its reasonable best efforts to cause any
     such decree, ruling, injunction or other order to be vacated or lifted.

          (d)  There shall not be pending any suit, action or proceeding by any
     Governmental Entity seeking to impose, and neither the Company nor
     Purchaser shall be subject to any order, decree, ruling or injunction
     (whether temporary, preliminary or permanent) which would impose,
     limitations on the ability of Purchaser to acquire or hold, or exercise
     full rights of ownership of, the Shares, including the right to vote the
     Shares on all matters properly presented to the shareholders of the
     Company.

          (e)  The closing of the transactions contemplated by the Other Stock
     Purchase Agreements shall be occurring concurrently with the Closing.

     Section 8.2  Condition to Obligations of the Company.  The obligations of
                  ---------------------------------------                      
the Company to effect the transactions contemplated by this Agreement are
further subject to the satisfaction or waiver at or prior to the Closing Date of
the following additional conditions:

          (a)  Purchaser shall have performed in all material respects all
     agreements and covenants required to be performed by it under this
     Agreement at or prior to the Closing Date, and the representations and
     warranties of Purchaser contained in this Agreement that are qualified as
     to materiality shall be true and correct and the representations and
     warranties of Purchaser contained in this Agreement that are not so
     qualified shall be true and correct in all material respects (except to the
     extent that such failures to be true and correct in the aggregate shall not
     have had and shall not be reasonably likely to have a Material Adverse
     Effect), in each case as of the date of this Agreement and as of the
     Closing Date, except to the extent any such representation or warranty
     expressly relates to an earlier date (in which case as of such date), and
     Purchaser shall have received a certificate signed on behalf of Purchaser
     by an executive officer thereof to such effect.

          (b)  The Company shall have received an opinion of Rosenberg &
     Liebentritt, in form and substance reasonably satisfactory to the Company.

     Section 8.3  Conditions to Obligations of Purchaser.  The obligations of
                  --------------------------------------                      
Purchaser to effect the transactions contemplated by this Agreement are further
subject to the satisfaction or waiver at or prior to the Closing Date of the
following additional conditions:

                                       22
<PAGE>
 
          (a)  The Company shall have performed in all material respects all
     agreements and covenants required to be performed by it under this
     Agreement at or prior to the Closing Date, and the representations and
     warranties of the Company contained in this Agreement that are qualified as
     to materiality shall be true and correct and the representations and
     warranties of the Company contained in this Agreement that are not so
     qualified shall be true and correct in all material respects (except to the
     extent that such failures to be true and correct in the aggregate shall not
     have had and shall not be reasonably likely to have a Material Adverse
     Effect), in each case as of the date of this Agreement and as of the
     Closing Date, except to the extent any such representation or warranty
     expressly relates to an earlier date (in which case as of such date), and
     the Company shall have received a certificate signed on behalf of the
     Company by an executive officer thereof to such effect.

          (b) The modifications to the employment agreements referenced in
     Section 4.7(iii) of the Disclosure Letter shall have been made, as
     described in such Section of the Disclosure Letter.

          (c)  Purchaser shall have received an opinion of Kirkland & Ellis, in
     form and substance reasonably satisfactory to Purchaser.

                                  ARTICLE IX
                                        
                       TERMINATION, AMENDMENT AND WAIVER

     Section 9.1  Termination.  This Agreement may be terminated and the
                  -----------                                             
transactions contemplated by this Agreement may be abandoned at any time prior
to the Closing Date:

          (a)  by mutual written consent of Purchaser and the Company; or

          (b)  by either Purchaser or the Company:

               (i)   if, at a duly held shareholders meeting of the Company or
          any adjournment thereof at which Shareholder Approval is voted upon,
          Shareholder Approval shall not have been obtained;

               (ii)  if the transactions contemplated by this Agreement shall
          not have been consummated by October 31, 1998 (other than due to the
          failure of the party seeking to terminate this Agreement to perform
          its obligations under this Agreement required to be performed at or
          prior to the Closing Date);

               (iii) if any Governmental Entity shall have issued an order,
          decree or ruling or taken any other action permanently enjoining,
          restraining or otherwise 

                                       23
<PAGE>
 
          prohibiting the transactions contemplated by this Agreement and such
          order, decree, ruling or other action shall have become final and non-
          appealable;

               (iv) in the event of a breach by the other party of any
          representation, warranty, covenant or other agreement contained in
          this Agreement which (A) would give rise to the failure of a condition
          set forth in Section 8.2(a) or 8.3(a), as applicable, and (B) cannot
          be or has not been cured within 30 days after the giving of written
          notice to the breaching party of such breach (provided that the
          terminating party is not then in breach of any representation,
          warranty, covenant or other agreement that would give rise to a
          failure of a condition as described in clause (A) above); or

               (v)  in the event that (A) all the conditions to the obligation
          of such party to effect the transactions contemplated by this
          Agreement set forth in Section 8.1 shall have been satisfied and (B)
          any condition to the obligation of such party to effect such
          transactions set forth in Section 8.2 (in the case of the Company) or
          Section 8.3 (in the case of Purchaser) is not capable of being
          satisfied prior to the end of the period referred to in subsection
          (b)(ii) above.

     Section 9.2  Effect of Termination.  In the event of termination of this
                  ---------------------                                       
Agreement by either Purchaser or the Company as provided in Section 9.1 hereof,
this Agreement shall forthwith become void (except as set forth in this Section
9.2, in Section 7.5 and Article XI (other than Section 11.5) hereof, which shall
survive such termination (the "Surviving Provisions")) and there shall be no
liability on the part of Purchaser or the Company except for any breach of any
of its obligations under the Surviving Provisions.  Notwithstanding the
foregoing, no party hereto shall be relieved from liability for any material
breach of this Agreement.

                                   ARTICLE X

                           SURVIVAL; INDEMNIFICATION

     Section 10.1  Survival.  The representations and warranties given by the
                   --------                                                   
Company to Purchaser in this Agreement, and the representations and warranties
given by Purchaser to the Company in this Agreement, shall survive the Closing
until the second anniversary of the Closing Date; provided, however, that the
                                                  --------  -------          
representations and warranties given by the Company to Purchaser in Sections
4.1, 4.4 and 4.5, and by Purchaser to the Company in Sections 5.1, 5.2 and 5.3,
shall survive the Closing indefinitely and shall not terminate.

     Section 10.2  Indemnification by Purchaser or the Company.  (a)  From and
                   -------------------------------------------                 
after the Closing Date, Purchaser shall indemnify and hold harmless the Company,
the Company's Affiliates, each of their respective directors, officers,
employees and agents, and each of the heirs, executors, successors and assigns
of any of the foregoing from and against any and all 

                                       24
<PAGE>
 
damages, claims, losses, expenses, costs, obligations and liabilities including
without limiting the generality of the foregoing, liabilities for all reasonable
attorneys' fees and expenses (including attorney and expert fees and expenses
incurred to enforce the terms of this Agreement) (collectively, "Losses and
Expenses") suffered or incurred by any such indemnified person arising from,
relating to or otherwise in respect of, (i) any breach of, or inaccuracy in, any
representation or warranty of Purchaser contained in this Agreement or in the
certificate delivered pursuant to Section 8.2(a) of this Agreement; and (ii) any
breach of any covenant of Purchaser contained in this Agreement.

          (b)  From and after the closing date, the Company shall indemnify and
hold harmless Purchaser, Purchaser's Affiliates, each of their respective
directors, officers, employees and agents, and each of the heirs, executors,
successors and assigns of any of the foregoing from and against any and all
Losses and Expenses suffered or incurred by any such indemnified person arising
from, relating to or otherwise in respect of, (i) any breach of, or inaccuracy
in, any representation or warranty of the Company contained in this Agreement or
in the certificate delivered pursuant to section 8.3(a) of this Agreement, and
(ii) any breach of any covenant of the Company contained in this Agreement.

     Section 10.3  Third-Party Claims.  If a claim by a third party is made
                   ------------------                                       
against an indemnified person hereunder, and if such indemnified person intends
to seek indemnity with respect thereto under this Article, such indemnified
person shall promptly notify the indemnifying person in writing of such claims
setting forth such claims in reasonable detail, provided that failure of such
indemnified person to give prompt notice as provided herein shall not relieve
the indemnifying person of any of its obligations hereunder, except to the
extent that the indemnifying person is materially prejudiced by such failure.
The indemnifying person shall have twenty (20) days after receipt of such notice
to undertake, through counsel of its own choosing, subject to the reasonable
approval of such indemnified person, and at its own expense, the settlement or
defense thereof, and the indemnified person shall cooperate with it in
connection therewith; provided, however, that the indemnified person may
                      --------  -------                                 
participate in such settlement or defense through counsel chosen by such
indemnified person, provided that the fees and expenses of such counsel shall be
borne by such indemnified person.  If the indemnifying person shall assume the
defense of a claim, it shall not settle such claim without the prior written
consent of the indemnified person, (i) unless such settlement includes as an
unconditional term thereof the giving by the claimant of a release of the
indemnified person from all liability with respect to such claim or (ii) if such
settlement involves the imposition of equitable remedies or the imposition of
any material obligations on such indemnified person other than financial
obligations for which such indemnified party will be indemnified hereunder.  If
the indemnifying person shall assume the defense of a claim, the fees of any
separate counsel retained by the indemnified person shall be borne by such
indemnified person unless there exists a conflict between them as to their
respective legal defenses (other than one that is of a monetary nature), in
which case the indemnified person shall be entitled to retain separate counsel,
the reasonable fees and expenses of which shall be reimbursed by the
indemnifying person.  If the indemnifying 

                                       25
<PAGE>
 
person does not notify the indemnified person within thirty (30) days after the
receipt of the indemnified person's notice of a claim of indemnity hereunder
that it elects to undertake the defense thereof, the indemnified person shall
have the right to contest, settle or compromise the claim but shall not thereby
waive any right to indemnity therefor pursuant to this Agreement.

     Section 10.4  Termination of Indemnification.  The obligations to
                   ------------------------------                      
indemnify and hold harmless a party hereto, (a) with respect to any breach of,
or inaccuracy in, any representation or warranty contained in this Agreement
shall terminate when the applicable representation or warranty terminates and
(b) with respect to any breach of covenant or agreement set forth in this
Agreement shall not terminate; provided, however, that as to clause (a) above
                               --------  -------                             
such obligation to  indemnify and hold harmless shall not terminate with respect
to any item as to which the person to be indemnified shall have, before the
expiration of the applicable period, previously made a claim by delivering a
notice (stating in reasonable detail the basis of such claim) to the
indemnifying party.


                                  ARTICLE XI

                                 MISCELLANEOUS

     Section 11.1  Counterparts.  This Agreement may be executed in two or more
                   ------------                                                 
counterparts, all of which shall be considered one and the same Agreement, and
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties.

     Section 11.2  Governing Law.  This Agreement shall be governed by, and
                   -------------                                            
construed in accordance with, the laws of the State of Illinois regardless of
the laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 11.3  Entire Agreement.  This Agreement (including the documents
                   ----------------                                           
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understandings, both written and oral, between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties any rights or remedies.

     Section 11.4  Notices.  All notices and other communications hereunder
                   -------                                                  
shall be in writing and shall be deemed given if delivered personally, sent by
documented overnight delivery service or, to the extent receipt is confirmed,
telecopy, to the appropriate address or telecopy number set forth below (or at
such other address or telecopy number for a party as shall be specified by like
notice):

                                       26
<PAGE>
 
          (a)  If to Purchaser:

          Samstock, L.L.C.
          Two North Riverside Plaza
          Chicago, Illinois  60606
          Attention:  F. Philip Handy
          Telecopy Number:  312.454.1671

          with a copy to:
 
          Rosenberg & Liebentritt, P.C.
          Two North Riverside Plaza
          Chicago, Illinois  60606
          Attention:  Walter S. Lowry
          Telecopy Number:  312.454.0335

          (b)  If to Company, to:

          Davel Communications Group, Inc.
          1429 Massaro Boulevard
          Tampa, Florida  33619
          Attention: Theodore C. Rammelkamp, Jr.
          Telecopy: 813.626.9610

          With a copy to:

          Kirkland & Ellis
          200 East Randolph Drive
          Chicago, Illinois  60601
          Attention:  R. Scott Falk
          Telecopy Number:  312.861.2200

     Section 11.5  Assignment.  Neither this Agreement nor any of the rights,
                   ----------                                                 
interest or obligations under this Agreement shall be assigned, in whole or in
part, by operation of law or otherwise by any of the parties without the prior
written consent of the other parties, except that Purchaser may assign any of or
all of its rights and obligations under this Agreement to any person that is an
Affiliate of Samuel Zell or an Affiliate of any one or more trusts established
for the benefit of Samuel Zell and/or members of his family without the consent
of any other party; provided that such assignment shall not relieve Purchaser of
its obligations hereunder. Subject to the preceding sentence, this Agreement
shall be binding upon, and inure to the benefit of, the parties hereto and their
respective successors and assigns.

                                      27
<PAGE>
 
     Section 11.6  Interpretation. The table of contents and headings contained
                   --------------                                               
in this Agreement are inserted for convenience of reference only and shall not
affect in any way the meaning or interpretation of this Agreement.  All
references to a Section, articles, Schedule or Exhibit contained herein mean
Sections or Articles of this Agreement unless otherwise stated.  All capitalized
terms defined herein are equally applicable to both the singular and plural
forms of such terms.

     Whenever the words "include", "includes" or "including" are used in this
Agreement, they shall be deemed to be followed by the words "without
limitation".

     Section 11.7  Amendments; Waivers. (a) This Agreement may not be modified
                   ------------------- 
or amended except by an instrument or instruments in writing signed by each
party hereto.

          (b)  The failure of any party hereto to comply with any
representation, warranty, covenant or agreement contained in this Agreement may
be waived only by a written instrument signed by the party granting such waiver.
No action taken pursuant to this Agreement, including any investigation by or on
behalf of any party, shall be deemed to constitute a waiver by the party taking
such action of compliance with any representation, warranty, covenant or
agreement contained in this Agreement, and no failure by any party to take any
action with respect to any breach of this Agreement or default by any other
party shall constitute a waiver of such party's right to enforce any provision
hereof or to take any such action. The waiver by any party hereto of a breach of
any provision hereunder shall not operate as a waiver of any prior or subsequent
breach of the same or any other provision hereunder.

     Section 11.8  Severability.  Any provision hereof which is invalid or
                   ------------                                            
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 11.9  Consent to Jurisdiction.  Each party hereto irrevocably
                   -----------------------                                 
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
Illinois and (b) the federal district courts located in the State of Illinois
for the purposes of any suit, action or other proceeding arising out of this
Agreement or any transaction contemplated hereby.

                                       28
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed on behalf of each of the
parties as of the date first above written.


                                   SAMSTOCK, L.L.C.
                                   by SZ Investments, L.L.C.
                                   by Zell General Partnership, Inc.

                                   By:  /s/ Rod Danmeyer
                                        --------------------------------------
                                        Name:
                                        Title:


                                   DAVEL COMMUNICATIONS GROUP, INC.


                                   By:  /s/ David Hill
                                        --------------------------------------
                                        Name:  David Hill
                                        Title: Chairman

                                       29

<PAGE>
 
                                                                    EXHIBIT 10.2


                               VOTING AGREEMENT

     This VOTING AGREEMENT, dated June 11, 1998, between ING (U.S.) Investment
Corporation, a Delaware corporation ("ING"), and Davel Communications Group,
Inc., an Illinois corporation (the "Company").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
PhoneTel Technologies, Inc., an Ohio corporation ("PhoneTel"), the Company,
Davel Holdings, Inc., a Delaware corporation and a wholly owned subsidiary of
the Company ("New Davel"), D Subsidiary, Inc., an Illinois corporation and a
wholly owned subsidiary of New Davel ("D Sub"), and PT Merger Corp., an Ohio
corporation and a wholly owned subsidiary of New Davel ("P Sub"), have entered
into an Agreement and Plan of Merger and Reorganization (the "Merger
Agreement"), dated the date hereof, pursuant to which (i) D Sub will be merged
with and into the Company with the Company surviving as a wholly owned
subsidiary of New Davel (the "Davel Merger") and (ii) P Sub will be merged with
and into PhoneTel with PhoneTel surviving as a wholly owned subsidiary of New
Davel (the "PhoneTel Merger").

     WHEREAS, the consummation of the PhoneTel Merger, and the other
transactions contemplated by the Merger Agreement (the "Transaction"), is
subject to certain conditions, including the approval of the Merger Agreement
and the PhoneTel Merger by the holders of at least a majority of the outstanding
shares of common stock, par value $.01 per share, of  PhoneTel ("PhoneTel Common
Stock").

     WHEREAS, ING is the holder of warrants (the "Warrants") to purchase shares
of Series A Special Convertible Preferred Stock, par value $.20 per share (the
Preferred Stock), of PhoneTel at an exercise price of $.20 per share of
Preferred Stock.

     WHEREAS, the Preferred Stock is convertible into an aggregate of 2,041,590
shares of PhoneTel Common Stock (such shares, upon acquisition thereof by ING,
being herein referred to as the "Warrant Shares" and the Warrant Shares,
together with any other shares of capital stock of PhoneTel acquired by ING
after the date hereof and during the term of this Agreement being collectively
herein referred to as the "Shares").

     WHEREAS, under the terms of the Warrant Purchase Agreement dated March 15,
1996 (the "Warrant Agreement") between PhoneTel and ING pursuant to which the
Warrants were issued, the Warrants are immediately exercisable for the Preferred
Stock; and, under the terms of the Preferred Stock, as set forth in the Articles
of Incorporation of PhoneTel, upon issuance, the Preferred Stock will be
immediately convertible into the Shares.

     WHEREAS, as a condition to the willingness of the Company to enter into the
Merger Agreement, and as an inducement to it to do so, ING has agreed for the
benefit of the Company as set forth in this Agreement.
<PAGE>
 
     NOW, THEREFORE, in consideration of the representations, warranties,
covenants and agreements contained in this Agreement, the parties hereby agree
as follows:

                                   ARTICLE I

                               COVENANTS OF ING

     Section 1.1    Agreement to Exercise Warrants.  ING covenants and agrees
                    -------------------------------                          
with the Company that, prior to the record date for the PhoneTel Shareholders
Meeting (as hereinafter defined), ING will exercise the Warrants for all of the
shares of Preferred Stock issuable upon exercise of the Warrants and will pay
the exercise price payable in respect thereof.

     Section 1.2    Agreement to Convert Preferred Stock.  ING covenants and
                    -------------------------------------                   
agrees with the Company that, prior to the record date for the PhoneTel
Stockholders Meeting, ING will convert the Preferred Stock into all of the
shares of PhoneTel Common Stock issuable upon conversion of  the Preferred Stock
and will continue to hold the Shares through such record date so that ING is a
holder of record of PhoneTel Common Stock entitled to vote the Shares at the
PhoneTel Stockholders meeting.

     Section 1.3    Agreement to Vote.  At any meeting of the shareholders of
                    -----------------                                        
the Company held prior to the Termination Date (as hereinafter defined), however
called ("PhoneTel Shareholders Meeting"), and at every reconvened meeting
following any adjournment or postponement thereof prior to the Termination Date,
or in connection with any written consent of the shareholders of the Company
executed prior to the Termination Date, ING shall vote the Shares in favor of
the approval of the Merger Agreement, the PhoneTel Merger and each of the
actions contemplated by the Merger Agreement to be performed by PhoneTel in
connection with the Transaction and any actions required in furtherance thereof.
Prior to the Termination Date and subject to Section 1.5, ING shall not enter
into any agreement or understanding with any person, directly or indirectly, to
vote, grant any proxy or give instructions with respect to the voting of the
Shares in any manner inconsistent with the preceding sentence.

     Section 1.4    Proxies.  (a) ING hereby revokes any and all previous
                    -------
proxies granted with respect to matters set forth in Section 1.3 for the Shares.

     (b) Prior to the Termination Date, ING shall not grant any proxies or
powers of attorney with respect to matters set forth in Section 1.3, deposit any
of the Shares into a voting trust or enter into a voting agreement, other than
this Agreement, with respect to any of the Shares, in each case with respect to
such matters.

     Section 1.5    Transfer of Shares by ING.  Prior to the Termination Date,
                    -------------------------
ING shall not (a) pledge or place any encumbrance on any Shares, other than
pursuant to this Agreement, or (b) transfer, sell, exchange or otherwise dispose
of any Shares, in each case, unless the pledgee, encumbrance holder, transferee,
purchaser or acquiror of such Shares enters into a Voting Agreement with the
Company containing substantially the same terms as this Agreement.

                                      -2-
<PAGE>
 
     Section 1.6  Action in Shareholder Capacity Only.  ING makes no agreement
                  -----------------------------------                         
or understanding herein in any capacity other than its capacity as a record
holder of the Warrants and a beneficial owner of the Warrants, the Preferred
Stock and the Shares, and nothing herein shall limit or affect any actions taken
in any other capacity.

                                  ARTICLE II

                        REPRESENTATIONS, WARRANTIES AND
                          ADDITIONAL COVENANTS OF ING

     ING represents, warrants and covenants to the Company that:

     Section 2.1  Ownership.  As of the date hereof, ING has the right, under
                  ---------                                                  
the terms of the Warrants and the Preferred Stock, to acquire, in the aggregate,
the 2,041,590 Warrant Shares.  Upon exercise of the Warrants and subsequent
conversion of the Preferred Stock, ING will be the beneficial and record owner
of the Warrant Shares and, subject to Section 1.3, ING will have the sole right
to vote the Warrant Shares and there will be no restrictions on rights of
disposition or other liens pertaining to the Warrant Shares.  ING has not agreed
to subject any Shares to any voting trust or other agreement, arrangement or
restriction with respect to the voting of the Shares.

     Section 2.2  Authority and Non-Contravention.  ING has the right, power and
                  -------------------------------                               
authority to enter into this Agreement and, subject to the issuance to ING of
the Warrant Shares, to consummate the transactions contemplated by this
Agreement.  The execution and delivery of this Agreement by ING and the
consummation of the transactions contemplated by this Agreement have been duly
authorized by all necessary action on the part of  ING.  This Agreement has been
duly executed and delivered by ING and constitutes a valid and binding
obligation of ING, enforceable against ING in accordance with its terms, subject
to general principles of equity and as may be limited by bankruptcy, insolvency,
moratorium, or similar laws affecting creditors' rights generally. Neither the
execution and delivery of this Agreement by ING nor the consummation by ING of
the transactions contemplated hereby will (i) materially violate, or require any
consent, approval or notice under, any provision of any judgment, order, decree,
statute, law, rule or regulation applicable to ING or, upon issuance thereof to
ING,  the Shares or (ii) violate or conflict with the certificate of
incorporation or bylaws of ING or constitute a material violation of or default
under any contract, commitment, agreement, understanding, arrangement or other
restriction of any kind to which ING is a party or by which ING or its assets
are bound.

     Section 2.3  Total Shares.  As of the date hereof, ING does not own,
                  ------------                                           
beneficially (other than through ownership of the Warrants) or of record, any
shares of capital stock of the Company. Other than the Warrants, ING does not
have any option to purchase or right to subscribe for or otherwise acquire any
securities of the Company and has no other interest in or voting rights with
respect to any other securities of the Company.

     Section 2.4  Notifications.  Prior to the Termination Date, ING will notify
                  -------------                                                 
the Company promptly of the number of any shares of capital stock of PhoneTel
acquired by ING after the date hereof.

                                      -3-
<PAGE>
 
     Section 2.5  Delivery of Affiliate Letter.  In the event that counsel to
                  ----------------------------                               
the Company reasonably determines that ING is an affiliate of PhoneTel for
purposes of Rule 145 under the Securities Act of 1933, as amended, or for
purposes of pooling accounting, ING agrees to execute and deliver to the Company
not later than 30 days prior to the effective time of the PhoneTel Merger an
Affiliate Letter substantially in the form attached hereto as Exhibit A.

                                  ARTICLE III

                 REPRESENTATIONS, WARRANTIES AND COVENANTS OF
                                  THE COMPANY

     The Company represents, warrants and covenants to ING that:

     Section 3.1  Authority and Non-Contravention.  The Company has the right,
                  -------------------------------                             
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement.  The execution and delivery of this
Agreement by the Company and the consummation of the transactions contemplated
by this Agreement have been duly authorized by all necessary action on the part
of the Company.  This Agreement has been duly executed and delivered by the
Company and constitutes a valid and binding obligation of the Company,
enforceable against the Company in accordance with its terms, subject to general
principles of equity and as may be limited by bankruptcy, insolvency, moratorium
or similar laws affecting creditors' rights generally.  Neither the execution
and delivery of this Agreement nor the consummation by the Company of the
transactions contemplated hereby will (i) materially violate, or require any
consent, approval or notice under, any provision of any judgment, order, decree,
statute, law, rule or regulation applicable to the Company or (ii) violate or
conflict with the certificate of incorporation or by laws of the Company or
constitute a material violation of or default under any contract, commitment,
agreement, understanding, arrangement or other restriction of any kind to which
the Company is a party or by which the Company or its assets are bound.

                                  ARTICLE IV

                                 MISCELLANEOUS

     Section 4.1  Expenses.  All costs and expenses incurred in connection with
                  --------                                                     
this Agreement shall be paid by the party incurring such costs or expenses;
provided, however, that the Company shall pay reasonable fees and expenses of
counsel to ING incurred in connection with the negotiation and execution of this
Agreement.

     Section 4.2  Further Assurances.  From time to time, at the request of the
                  ------------------                                           
Company, in the case of ING, or at the request of ING, in the case of the
Company, and without further consideration, each party shall execute and deliver
or cause to be executed and delivered such additional documents and instruments
and take all such further action as may be reasonably necessary or desirable to
consummate the transactions contemplated by this Agreement.

     Section 4.3  Specific Performance.  ING agrees that the Company would be
                  --------------------                                       
irreparably damaged if for any reason ING fails to perform any of ING's
obligations under this Agreement, and

                                      -4-
<PAGE>
 
that the Company would not have an adequate remedy at law for money damages in
such event. Accordingly, the Company shall be entitled to seek specific
performance and injunctive and other equitable relief to enforce the performance
of this Agreement by ING. This provision is without prejudice to any other
rights that the Company may have against ING for any failure to perform its
obligations under this Agreement.

     Section 4.4  Amendments, Termination.  This Agreement may not be modified
                  -----------------------                                     
or amended except by an instrument or instruments in writing signed by each
party hereto.  The representations, warranties, covenants and agreements set
forth in Article I, Article II and Article III shall terminate, except with
respect to liability for prior breaches thereof, upon the earliest to occur of
(i) December 7, 1998, (ii) termination of the Merger Agreement in accordance
with its terms, (iii) the Closing Date and (iv) the date, if any, upon which
PhoneTel's Board of Directors withdraws, modifies or changes its recommendation
or approval of the Merger Agreement or the PhoneTel Merger in a manner adverse
to the Company (the "Termination Date").

     Section 4.5  Assignment.  Subject to Section 1.5 hereof, neither this
                  ----------                                              
Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise by any
of the parties without the prior written consent of the other parties.  Subject
to the preceding sentence, this Agreement shall be binding upon, and inure to
the benefit of, the parties hereto and their respective successors and assigns.

     Section 4.6  Certain Events.  ING agrees that this Agreement and the
                  --------------                                         
obligations hereunder shall attach to the Warrants, Preferred Stock and Shares
and shall be binding upon any person to which legal or beneficial ownership of
such shares shall pass, whether by operation of law or otherwise.

     Section 4.7  Entire Agreement.  This Agreement (including the documents
                  ----------------                                          
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understanding, both oral and written between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties hereto any rights or remedies.

     Section 4.8  Notices.  All notices and other communications hereunder shall
                  -------                                                       
be in writing and shall be deemed given if delivered personally, sent by
documented overnight delivery service or telecopied with confirmation of
receipt, to the parties at the addresses specified below (or at such other
address or telecopy or telex number for a party as shall be specified by like
notice):

          If to the Company, to:

          Davel Communications Group, Inc.
          1429 Massaro Boulevard
          Tampa, Florida  33619
          Attention: Theodore C. Rammelkamp, Jr.
          Facsimile: (813) 626-9610

                                      -5-
<PAGE>
 
          with a copy to:

          Kirkland & Ellis
          200 East Randolph Drive
          Chicago, Illinois  60601
          Attention: R. Scott Falk
          Facsimile: (312) 861-2200

          If to ING, to:

          Internationale Nederlanden
          (U.S.) Capital Corporation
          135 East 57th Street
          New York, NY 10022
          Attention: Chief Credit Officer
          Facsimile: (212) 750-8935

          with a copy to:

          King & Spalding
          191 Peachtree Street
          Atlanta, GA 30300-1763
          Attention: William R. Spalding
          Facsimile: (404) 572-5100

     Section 4.9    Governing Law.  This Agreement shall be governed by, and
                    -------------                                           
construed in accordance with, the laws of the State of New York regardless of
the laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 4.10   Counterparts.  This Agreement may be executed in two or more
                    ------------                                                
counterparts, all of which shall be considered one and the same agreement, and,
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties in original or facsimile form.

     Section 4.11   Interpretation.  The headings contained in this Agreement
                    --------------                                           
are inserted for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

     Section 4.12   Severability.  Any provision hereof which is invalid or
                    ------------                                           
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 4.13   Consent to Jurisdiction.  Each party hereto irrevocably
                    -----------------------                                
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
New York and (b) the United States federal district courts located in the State
of New York for the purposes of any suit, action or other proceeding arising out
of this Agreement or any transaction contemplated hereby.

                                      -6-
<PAGE>
 
     Section 4.14   Attorney's Fees.  If any action at law or in equity is
                    ---------------                                       
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorneys' fees, costs and necessary
disbursements, in addition to any other relief to which such party may be
entitled.

                                      -7-
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed by or on behalf of each
of the parties as of the date first above written.

                                   ING, (U.S.) INVESTMENT CORPORATION


                                   By:  /s/ James W. Latimer
                                       ----------------------------------------
                                   Name:  James W. Latimer
                                   Title:


                                   DAVEL COMMUNICATIONS GROUP, INC.


                                   By:  /s/ Theodore C. Rammelkamp, Jr.
                                       ----------------------------------------
                                   Name:  Theodore C. Rammelkamp, Jr.
                                   Title: Senior Vice President

                                      -8-

<PAGE>
 
                                                                    EXHIBIT 10.3

                               VOTING AGREEMENT

     This VOTING AGREEMENT, dated June 11, 1998, between Cerberus  Partners,
L.P., a Delaware limited partnership ("Cerberus"), and Davel Communications
Group, Inc., an Illinois corporation (the "Company").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
PhoneTel Technologies, Inc., an Ohio corporation ("PhoneTel"), the Company,
Davel Holdings, Inc., a Delaware corporation and a wholly owned subsidiary of
the Company ("New Davel"), D Subsidiary, Inc., an Illinois corporation and a
wholly owned subsidiary of New Davel ("D Sub"), and PT Merger Corp., an Ohio
corporation and a wholly owned subsidiary of New Davel ("P Sub"), have entered
into an Agreement and Plan of Merger and Reorganization (the "Merger
Agreement"), dated the date hereof, pursuant to which (i) D Sub will be merged
with and into the Company with the Company surviving as a wholly owned
subsidiary of New Davel (the "Davel Merger") and (ii) P Sub will be merged with
and into PhoneTel with PhoneTel surviving as a wholly owned subsidiary of New
Davel (the "PhoneTel Merger").

     WHEREAS, the consummation of the PhoneTel Merger, and the other
transactions contemplated by the Merger Agreement (the "Transaction"), is
subject to certain conditions, including the approval of the Merger Agreement
and the PhoneTel Merger by the holders of at least a majority of the outstanding
shares of common stock, par value $.01 per share, of  PhoneTel ("PhoneTel Common
Stock").

     WHEREAS, Cerberus is the holder of warrants (the "Warrants") to purchase
shares of Series A Special Convertible Preferred Stock, par value $.20 per share
(the Preferred Stock), of PhoneTel at an exercise price of $.20 per share of
Preferred Stock.

     WHEREAS, the Preferred Stock is convertible into an aggregate of 1,798,240
shares of PhoneTel Common Stock (such shares, upon acquisition thereof by
Cerberus, being herein referred to as the "Warrant Shares").

     WHEREAS, under the terms of the Warrant Purchase Agreement dated March 15,
1996 (the "Warrant Agreement") between PhoneTel and Cerberus pursuant to which
the Warrants were issued, the Warrants are immediately exercisable for the
Preferred Stock; and, under the terms of the Preferred Stock, as set forth in
the Articles of Incorporation of PhoneTel, upon issuance, the Preferred Stock
will be immediately convertible into the Shares.

     WHEREAS, Cerberus is the record and beneficial owner of 124,300 shares of
PhoneTel Common Stock (such shares being herein referred to as the "Currently
Held Shares" and, together with the Warrant Shares and any other shares of
capital stock of PhoneTel acquired by Cerberus after the date hereof and during
the term of this Agreement being collectively herein referred to as the
"Shares"), which shares collectively represent approximately 8.0% of the Shares
of PhoneTel Common Stock outstanding as of June 1, 1998.
<PAGE>
 
     WHEREAS, as a condition to the willingness of the Company to enter into the
Merger Agreement, and as an inducement to it to do so, Cerberus has agreed for
the benefit of the Company as set forth in this Agreement.

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

                                   ARTICLE I

                             COVENANTS OF CERBERUS

     Section 1.1    Agreement to Exercise Warrants.  Cerberus covenants and
                    -------------------------------                        
agrees with the Company that, prior to the record date for the PhoneTel
Shareholders Meeting (as hereinafter defined), Cerberus will exercise the
Warrants for all of the shares of Preferred Stock issuable upon exercise of the
Warrants and will pay the exercise price payable in respect thereof.

     Section 1.2    Agreement to Convert Preferred Stock.  Cerberus covenants
                    -------------------------------------                    
and agrees with the Company that, prior to the record date for the PhoneTel
Stockholders Meeting, Cerberus will convert the Preferred Stock into all of the
shares of PhoneTel Common Stock issuable upon conversion of  the Preferred Stock
and will continue to hold the Shares through such record date so that Cerberus
is a holder of record of PhoneTel Common Stock entitled to vote the Shares at
the PhoneTel Stockholders meeting.

     Section 1.3    Agreement to Vote.  At any meeting of the shareholders of
                    -----------------                                        
the Company held prior to the Termination Date (as hereinafter defined), however
called ("PhoneTel Shareholders Meeting"), and at every reconvened meeting
following any adjournment or postponement thereof prior to the Termination Date,
or in connection with any written consent of the shareholders of the Company
executed prior to the Termination Date, Cerberus shall vote the Shares in favor
of the approval of the Merger Agreement, the PhoneTel Merger and each of the
actions contemplated by the Merger Agreement to be performed by PhoneTel in
connection with the Transaction and any actions required in furtherance thereof.
Prior to the Termination Date and subject to Section 2.5, Cerberus shall not
enter into any agreement or understanding with any person, directly or
indirectly, to vote, grant any proxy or give instructions with respect to the
voting of the Shares in any manner inconsistent with the preceding sentence.

     Section 1.4    Proxies.  (a) Cerberus hereby revokes any and all previous
                    -------                                                   
proxies granted with respect to matters set forth in Section 1.3 for the Shares.

     (b)  Prior to the Termination Date, Cerberus shall not grant any proxies or
powers of attorney with respect to matters set forth in Section 1.3, deposit any
of the Shares into a voting trust or enter into a voting agreement, other than
this Agreement, with respect to any of the Shares, in each case with respect to
such matters.

     Section 1.5    Transfer of Shares by Cerberus.  Prior to the Termination
                    ------------------------------                           
Date, Cerberus shall not (a) pledge or place any encumbrance on any Shares,
other than pursuant to this Agreement, or (b) transfer, sell, exchange or
otherwise dispose of any Shares, in each case unless the pledgee,

                                      -2-
<PAGE>
 
encumbrance holder, transferee, purchaser or acquiror of such Shares enters into
a Voting Agreement with the Company containing substantially the same terms as
this Agreement.

     Section 1.6  Action in Shareholder Capacity Only.  Cerberus makes no
                  -----------------------------------                    
agreement or understanding herein in any capacity other than its capacity as a
record holder of the Warrants and Currently Held Shares and a beneficial owner
of the Warrants, the Preferred Stock and the Shares, and nothing herein shall
limit or affect any actions taken in any other capacity.

                                  ARTICLE II

                        REPRESENTATIONS, WARRANTIES AND
                       ADDITIONAL COVENANTS OF Cerberus

     Cerberus represents, warrants and covenants to the Company that:

     Section 2.1  Ownership.  As of the date hereof, Cerberus has the right,
                  ---------                                                 
under the terms of the Warrants and the Preferred Stock, to acquire, in the
aggregate, the 1,798,240 Warrant Shares. Cerberus is the beneficial and record
owner of the Currently Held Shares and, upon exercise of the Warrants and
subsequent conversion of the Preferred Stock, Cerberus will be the beneficial
and record owner of the Warrant Shares and, subject to Section 1.3, Cerberus
will have the sole right to vote the Warrant Shares and the Currently Held
Shares and there will be no restrictions on rights of disposition or other liens
pertaining to the Warrant Shares or the Currently Held Shares.  Cerberus has not
agreed to subject any Shares to any voting trust or other agreement, arrangement
or restriction with respect to the voting of the Shares.

     Section 2.2  Authority and Non-Contravention.  Cerberus has the right,
                  -------------------------------                          
power and authority to enter into this Agreement and, subject to the issuance to
Cerberus of the Warrant Shares, to consummate the transactions contemplated by
this Agreement.  The execution and delivery of this Agreement by Cerberus and
the consummation of the transactions contemplated by this Agreement have been
duly authorized by all necessary action on the part of  Cerberus.  This
Agreement has been duly executed and delivered by Cerberus and constitutes a
valid and binding obligation of Cerberus, enforceable against Cerberus in
accordance with its terms, subject to general principles of equity and as may be
limited by bankruptcy, insolvency, moratorium, or similar laws affecting
creditors' rights generally.  Neither the execution and delivery of this
Agreement by Cerberus nor the consummation by Cerberus of the transactions
contemplated hereby will (i) materially violate, or require any consent,
approval or notice under, any provision of any judgment, order, decree, statute,
law, rule or regulation applicable to Cerberus or, upon issuance thereof to
Cerberus,  the Shares or (ii) violate or conflict with the certificate of
incorporation or bylaws of Cerberus or constitute a material violation of or
default under any contract, commitment, agreement, understanding, arrangement or
other restriction of any kind to which Cerberus is a party or by which Cerberus
or its assets are bound.

     Section 2.3  Total Shares.  As of the date hereof, other than the Currently
                  ------------                                                  
Held Shares, Cerberus does not own, beneficially (other than through ownership
of the Warrants) or of record, any shares of capital stock of the Company.
Other than the Warrants, Cerberus does not have any option to purchase or right
to subscribe for or otherwise acquire any securities of the Company and has no
other interest in or voting rights with respect to any other securities of the
Company.

                                      -3-
<PAGE>
 
     Section 2.4  Notifications.  Prior to the Termination Date, Cerberus will
                  -------------                                               
notify the Company promptly of the number of any shares of capital stock of
PhoneTel acquired by Cerberus after the date hereof.

     Section 2.5  Pooling.  Cerberus agrees not to take any action that would
                  -------                                                    
cause the Transaction not to qualify for pooling-of-interests treatment for
accounting purposes.


                                  ARTICLE III

                 REPRESENTATIONS, WARRANTIES AND COVENANTS OF
                                  THE COMPANY

     The Company represents, warrants and covenants to Cerberus that:

     Section 3.1  Authority and Non-Contravention.  The Company has the right,
                  -------------------------------                             
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement.  The execution and delivery of this
Agreement by the Company and the consummation of the transactions contemplated
by this Agreement have been duly authorized by all necessary action on the part
of the Company.  This Agreement has been duly executed and delivered by the
Company and constitutes a valid and binding obligation of the Company,
enforceable against the Company in accordance with its terms, subject to general
principles of equity and as may be limited by bankruptcy, insolvency, moratorium
or similar laws affecting creditors' rights generally.  Neither the execution
and delivery of this Agreement nor the consummation by the Company of the
transactions contemplated hereby will (i) materially violate, or require any
consent, approval or notice under, any provision of any judgment, order, decree,
statute, law, rule or regulation applicable to the Company or (ii) violate or
conflict with the certificate of incorporation or by laws of the Company or
constitute a material violation of or default under any contract, commitment,
agreement, understanding, arrangement or other restriction of any kind to which
the Company is a party or by which the Company or its assets are bound.

                                  ARTICLE IV

                                 MISCELLANEOUS

     Section 4.1  Expenses.  All costs and expenses incurred in connection with
                  --------                                                     
this Agreement shall be paid by the party incurring such costs or expenses;
provided, however, that the Company shall pay reasonable fees and expenses of
counsel to Cerberus incurred in connection with the negotiation and execution of
this Agreement.

     Section 4.2  Further Assurances.  From time to time, at the request of the
                  ------------------                                           
Company, in the case of Cerberus, or at the request of Cerberus, in the case of
the Company, and without further consideration, each party shall execute and
deliver or cause to be executed and delivered such additional documents and
instruments and take all such further action as may be reasonably necessary or
desirable to consummate the transactions contemplated by this Agreement.

                                      -4-
<PAGE>
 
     Section 4.3  Specific Performance.  Cerberus agrees that the Company would
                  --------------------                                         
be irreparably damaged if for any reason Cerberus fails to perform any of
Cerberus' obligations under this Agreement, and that the Company would not have
an adequate remedy at law for money damages in such event.  Accordingly, the
Company shall be entitled to seek specific performance and injunctive and other
equitable relief to enforce the performance of this Agreement by Cerberus. This
provision is without prejudice to any other rights that the Company may have
against Cerberus for any failure to perform its obligations under this
Agreement.

     Section 4.4  Amendments, Termination.  This Agreement may not be modified
                  -----------------------                                     
or amended except by an instrument or instruments in writing signed by each
party hereto.  The representations, warranties, covenants and agreements set
forth in Article I, Article II and Article III shall terminate, except with
respect to liability for prior breaches thereof, upon the earliest to occur of
(i) December 7, 1998, (ii) termination of the Merger Agreement in accordance
with its terms, (iii) the Closing Date and (iv) the date, if any, upon which
PhoneTel's Board of Directors withdraws, modifies or changes its recommendation
or approval of the Merger Agreement or the PhoneTel Merger in a manner adverse
to the Company (the "Termination Date").

     Section 4.5  Assignment.  Subject to Section 1.5 hereof, neither this
                  ----------                                              
Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise by any
of the parties without the prior written consent of the other parties.  Subject
to the preceding sentence, this Agreement shall be binding upon, and inure to
the benefit of, the parties hereto and their respective successors and assigns.

     Section 4.6  Certain Events.  Cerberus agrees that this Agreement and the
                  --------------                                              
obligations hereunder shall attach to the Warrants, Preferred Stock, Currently
Held Shares and Shares and shall be binding upon any person to which legal or
beneficial ownership of such shares shall pass, whether by operation of law or
otherwise.

     Section 4.7  Entire Agreement.  This Agreement (including the documents
                  ----------------                                          
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understanding, both oral and written between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties hereto any rights or remedies.

     Section 4.8  Notices.  All notices and other communications hereunder shall
                  -------                                                       
be in writing and shall be deemed given if delivered personally, sent by
documented overnight delivery service or telecopied with confirmation of
receipt, to the parties at the addresses specified below (or at such other
address or telecopy or telex number for a party as shall be specified by like
notice):

          If to the Company, to:

          Davel Communications Group, Inc.
          1429 Massaro Boulevard
          Tampa, Florida  33619
          Attention:  Theodore C. Rammelkamp, Jr., Esq.
          Facsimile:  (813) 626-9610

                                      -5-
<PAGE>
 
          with a copy to:

          Kirkland & Ellis
          200 East Randolph Drive
          Chicago, Illinois  60601
          Attention:  R. Scott Falk, Esq.
          Facsimile:  (312) 861-2200

          If to Cerberus, to:

          Cerberus Partners L.P.
          450 Park Avenue
          28th Floor
          New York, NY 10022
          Attention:  Mr. Seth Plattus
          Facsimile:  (212) 750-5212

          with a copy to:

          Lowenstein, Sandler P.C.
          65 Livingston Avenue
          Roseland, NJ  07068
          Attention:  Robert G. Minion, Esq.
          Facsimile:  (973) 597-2425


     Section 4.9    Governing Law.  This Agreement shall be governed by, and
                    -------------                                           
construed in accordance with, the laws of the State of New York regardless of
the laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 4.10   Counterparts. This Agreement may be executed in two or more
                    ------------
counterparts, all of which shall be considered one and the same agreement, and,
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties in original or facsimile form.

     Section 4.11   Interpretation.  The headings contained in this Agreement
                    --------------                                           
are inserted for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

     Section 4.12   Severability.  Any provision hereof which is invalid or
                    ------------                                           
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 4.13   Consent to Jurisdiction.  Each party hereto irrevocably
                    -----------------------                                
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
New York and (b) the United States

                                      -6-
<PAGE>
 
federal district courts located in the State of New York for the purposes of any
suit, action or other proceeding arising out of this Agreement or any
transaction contemplated hereby.

     Section 4.14   Attorney's Fees.  If any action at law or in equity is
                    ---------------                                       
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorneys' fees, costs and necessary
disbursements, in addition to any other relief to which such party may be
entitled.

                                      -7-
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed by or on behalf of each
of the parties as of the date first above written.

                                   CERBERUS PARTNERS, L.P.


                                   By:  /s/ Seth Plattus
                                        ---------------------------------
                                   Name:  Seth Plattus
                                   Title: Managing Director


                                   DAVEL COMMUNICATIONS GROUP, INC.


                                   By:  /s/ Theodore C. Rammelkamp, Jr.
                                        ---------------------------------
                                   Name:  Theodore C. Rammelkamp, Jr.
                                   Title: Senior Vice President

                                      -8-

<PAGE>
 
                                                                    EXHIBIT 10.4
                               VOTING AGREEMENT

     VOTING AGREEMENT, dated June 11, 1998, between Mr. Peter Graf ("Graf") a
Member of the Board of Directors of PhoneTel Technologies, Inc., an Ohio
corporation (the "Company"), and Davel Communications Group, Inc. ("Old Davel").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
the Company, Old Davel, Davel Holdings, Inc., a Delaware corporation and a
wholly owned subsidiary of Old Davel ("New Davel"), D Subsidiary, Inc., an
Illinois corporation and a wholly owned subsidiary of New Davel ("D Sub"), and
PT Merger Corp., an Ohio corporation and a wholly owned subsidiary of New Davel
("P Sub"), have entered into an Agreement and Plan of Merger and Reorganization
(the "Merger Agreement"), dated the date hereof, pursuant to which (i) D Sub
will be merged with and into Old Davel with Old Davel surviving as a wholly
owned subsidiary of New Davel (the "Davel Merger") and (ii) P Sub will be merged
with and into the Company with the Company surviving as a wholly owned
subsidiary of New Davel (the "PhoneTel Merger").

     WHEREAS, the consummation of the Davel Merger, the PhoneTel Merger and the
other transactions contemplated by the Merger Agreement (the "Transaction") is
subject to certain conditions, including the approval of the Merger Agreement
and the PhoneTel Merger by the holders of at least a majority of the outstanding
shares of common stock, par $.01 per share, of PhoneTel ("PhoneTel Common
Stock").

     WHEREAS, Graf is the record and beneficial owner of 1,053,724 shares of
PhoneTel Common Stock (the "Owned Shares") representing approximately 6.3% of
the shares of PhoneTel Common Stock outstanding as of June 1, 1998.  Graf is
also the holder of 450,000 options and 75,064 warrants to purchase shares of
PhoneTel Common Stock. Such 1,053,724 shares of PhoneTel Common Stock, together
with any other shares of capital stock of PhoneTel acquired by Graf after the
date hereof and during the  term of this Agreement, are collectively referred to
herein as the "Shares".

     WHEREAS, as a condition to the willingness of Old Davel to enter into the
Merger Agreement, and as an inducement to Old Davel to do so, Graf has agreed
for the benefit of Old Davel as set forth in this Agreement.

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

                                   ARTICLE I

                               COVENANTS OF GRAF

     Section 1.1  Agreement to Vote.  At any meeting of the shareholders of
                  -----------------                                        
PhoneTel held prior to the Termination Date (as defined in Section 4.4), however
called, and at every reconvened meeting following any adjournment thereof prior
to the Termination Date, or in connection with any written consent of the
shareholders of Old Davel executed prior to the Termination Date, Graf shall
<PAGE>
 
vote the Shares in favor of the approval of the Merger Agreement, the PhoneTel
Merger and each of the actions contemplated by the Merger Agreement to be
performed by PhoneTel in connection with the Transaction and any actions
required in furtherance thereof.  Prior to the Termination Date and subject to
Section 1.3, Graf shall not enter into any agreement or understanding with any
person, directly or indirectly, to vote, grant any proxy or give instructions
with respect to the voting of the Shares in any manner inconsistent with the
preceding sentence.

     Section 1.2  Proxies.  (a) Graf hereby revokes any and all previous proxies
                  -------                                                       
granted with respect to matters set forth in Section 1.1 for the Shares.

     (b)  Prior to the Termination Date, Graf shall not grant any proxies or
powers of attorney with respect to matters set forth in Section 1.1, deposit any
of the Shares into a voting trust or enter into a voting agreement, with respect
to any of the Shares, in each case with respect to such matters.

     Section 1.3  Transfer of Shares by Graf.  Prior to the Termination Date
                  --------------------------                                
Graf shall not (a) pledge or place any encumbrance on any Shares, other than
pursuant to this Agreement, or (b) transfer, sell, exchange or otherwise dispose
of any Shares, in each case unless the pledgee, encumbrance holder, transferee,
purchaser or acquiror of such Shares enters into a Voting Agreement with Old
Davel containing substantially the same terms as this Agreement.

     Section 1.4  Action in Shareholder Capacity Only.  Graf makes no agreement
                  -----------------------------------                          
or understanding herein in any capacity other than his capacity as a record
holder and beneficial owner of the Shares, and nothing herein shall limit or
affect any actions taken in any other capacity.

                                  ARTICLE II

                        REPRESENTATIONS, WARRANTIES AND
                         ADDITIONAL COVENANTS OF GRAF

     Graf represents, warrants and covenants to Old Davel that:

     Section 2.1  Ownership.  Graf is, as of the date hereof, the beneficial and
                  ---------                                                     
record owner of 1,053,724 shares of PhoneTel Common Stock and has the sole right
to vote such shares, and there are no restrictions on rights of disposition or
other liens pertaining to such shares.  None of such shares is subject to any
voting trust or other agreement, arrangement or restriction with respect to the
voting of such shares.

     Section 2.2  Authority and Non-Contravention.  Graf has the right, power
                  -------------------------------                            
and authority to enter into this Agreement and to consummate the transactions
contemplated by this Agreement. This Agreement has been duly executed and
delivered by Graf and constitutes a valid and binding obligation of Graf,
enforceable against Graf in accordance with its terms, subject to general
principles of equity and as may be limited by bankruptcy, insolvency,
moratorium, or similar laws affecting creditors' rights generally.  Neither the
execution and delivery of this Agreement by Graf nor the consummation by Graf of
the transactions contemplated hereby will (i) materially violate, or require any
consent, approval or notice under, any provision of any judgment, order, decree,
statute, law, rule or regulation applicable to Graf or the Shares or (ii)
constitute a material violation

                                      -2-
<PAGE>
 
of or default under any contract, commitment, agreement, understanding,
arrangement or other restriction of any kind to which Graf is a party or by
which Graf or his assets are bound.

     Section 2.3  Total Shares.  Except for options to purchase 450,000 shares
                  ------------                                                
of PhoneTel Common Stock and warrants to purchase 75,064 shares of PhoneTel
Common Stock, Graf does not have any option to purchase or right to subscribe
for or otherwise acquire any securities of PhoneTel and, other than with respect
to the Owned Shares, has no other interest in or voting rights with respect to
any other securities of PhoneTel.

     Section 2.4  Reasonable Efforts.  Prior to the Termination Date, Graf shall
                  ------------------                                            
use reasonable efforts to take, or cause to be taken, all actions, and to do, or
cause to be done, and to assist and cooperate with PhoneTel in doing, all things
reasonably necessary, proper or advisable to consummate and make effective, in
the most expeditious manner reasonably practicable, the Transaction.

                                  ARTICLE III

                 REPRESENTATIONS, WARRANTIES AND COVENANTS OF
                                   OLD DAVEL

     Old Davel represents, warrants and covenants to Graf that:

     Section 3.1  Authority and Non-Contravention.  Old Davel has the right,
                  -------------------------------                           
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement.  The execution and delivery of this
Agreement by Old Davel and the consummation of the transactions contemplated by
this Agreement have been duly authorized by all necessary action on the part of
Old Davel.  This Agreement has been duly executed and delivered by Old Davel and
constitutes a valid and binding obligation of Old Davel, enforceable against Old
Davel in accordance with its terms, subject to general principles of equity and
as may be limited by bankruptcy, insolvency, moratorium or similar laws
affecting creditors' rights generally.  Neither the execution and delivery of
this Agreement nor the consummation by Old Davel of the transactions
contemplated hereby will (i) materially violate, or require any consent,
approval or notice under, any provision of any judgment, order, decree, statute,
law, rule or regulation applicable to Old Davel or (ii) violate or conflict with
the articles of incorporation or code of regulations of Old Davel or constitute
a material violation of or default under any contract, commitment, agreement,
understanding, arrangement or other restriction of any kind to which Old Davel
is a party or by which Old Davel or its assets are bound.

                                  ARTICLE IV

                                 MISCELLANEOUS

     Section 4.1  Expenses.  All costs and expenses incurred in connection with
                  --------                                                     
this Agreement shall be paid by the party incurring such costs or expenses.

                                      -3-
<PAGE>
 
     Section 4.2  Further Assurances.  From time to time, at the request of Old
                  ------------------                                           
Davel, in the case of Graf, or at the request of Graf, in the case of Old Davel,
and without further consideration, each party shall execute and deliver or cause
to be executed and delivered such additional documents and instruments and take
all such further action as may be reasonably necessary or desirable to
consummate the transactions contemplated by this Agreement.

     Section 4.3  Specific Performance.  Graf agrees that Old Davel would be
                  --------------------                                      
irreparably damaged if for any reason Graf fails to perform any of Graf's
obligations under this Agreement, and that Old Davel would not have an adequate
remedy at law for money damages in such event. Accordingly, Old Davel shall be
entitled to seek specific performance and injunctive and other equitable relief
to enforce the performance of this Agreement by Graf.  This provision is without
prejudice to any other rights that Old Davel may have against Graf for any
failure to perform its obligations under this Agreement.

     Section 4.4  Amendments, Termination.  This Agreement may not be modified
                  -----------------------                                     
or amended except by an instrument or instruments in writing signed by each
party hereto.  The representations, warranties, covenants and agreements set
forth in Article I, Article II and Article III shall terminate, except with
respect to liability for prior breaches thereof, upon the earliest to occur of
(i) termination of the Merger Agreement in accordance with its terms, (ii) the
Closing Date and (iii) the date, if any, upon which the Company's Board of
Directors withdraws, modifies or changes its recommendation or approval of the
Merger Agreement or the PhoneTel Merger in a manner adverse to Old Davel (the
"Termination Date").

     Section 4.5  Assignment.  Subject to Section 1.3 hereof, neither this
                  ----------                                              
Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise by any
of the parties without the prior written consent of the other parties.  Subject
to the preceding sentence, this Agreement shall be binding upon, and inure to
the benefit of, the parties hereto and their respective successors and assigns.

     Section 4.6  Certain Events.  Graf agrees that this Agreement and the
                  --------------                                          
obligations hereunder shall attach to the Shares and shall be binding upon any
person to which legal or beneficial ownership of such shares shall pass, whether
by operation of law or otherwise.

     Section 4.7  Entire Agreement.  This Agreement (including the documents
                  ----------------                                          
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understanding, both oral and written between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties hereto any rights or remedies.

     Section 4.8  Notices.  All notices and other communications hereunder shall
                  -------                                                       
be in writing and shall be deemed given if delivered personally, sent by
documented overnight delivery service or telecopied with confirmation of
receipt, to the parties at the addresses specified below (or at such other
address or telecopy or telex number for a party as shall be specified by like
notice):

          If to Old Davel to:

               Davel Communications Group, Inc.

                                      -4-
<PAGE>
 
               1429 Massaro Boulevard
               Tampa, Florida  33619
               Attention:  General Counsel
               Telecopy number: 813.626.9610

          with a copy to:

               Kirkland & Ellis
               200 East Randolph Drive
               Chicago, Illinois  60601
               Attention: R. Scott Falk
               Telecopy number: 312.861.2200

          If to Graf, to:

               Peter Graf
               Joseph Graf & Co.
               6 East 43rd Street
               New York, NY 10017
               Telecopy number:  212.687.7486

     Section 4.9    Governing Law.  This Agreement shall be governed by, and
                    -------------                                           
construed in accordance with, the laws of the State of Ohio regardless of the
laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 4.10   Counterparts.  This Agreement may be executed in two or more
                    ------------                                                
counterparts, all of which shall be considered one and the same agreement, and,
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties in original or facsimile form.

     Section 4.11   Interpretation.  The headings contained in this Agreement
                    --------------                                           
are inserted for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

     Section 4.12   Severability.  Any provision hereof which is invalid or
                    ------------                                           
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 4.13   Consent to Jurisdiction.  Each party hereto irrevocably
                    -----------------------                                
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
Ohio and (b) the United States federal district courts located in the State of
Illinois for the purposes of any suit, action or other proceeding arising out of
this Agreement or any transaction contemplated hereby.

     Section 4.14   Attorney's Fees.  If any action at law or in equity is
                    ---------------                                       
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorneys'

                                      -5-
<PAGE>
 
fees, costs and necessary disbursements, in addition to any other relief to
which such party may be entitled.

                                      -6-
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed by or on behalf of each
of the parties as of the date first above written.



                                   /s/ Peter Graf
                                   -----------------------------------------
                                   Peter Graf


                                   DAVEL COMMUNICATIONS GROUP, INC.


                                   By:  /s/ Theodore C. Rammelkamp, Jr.
                                        -------------------------------------
                                   Name:  Theodore C. Rammelkamp, Jr.
                                   Title: Senior Vice President

                                      -7-

<PAGE>
 
                                                                    EXHIBIT 10.5

                               VOTING AGREEMENT

     VOTING AGREEMENT, dated June 11, 1998, between Mr. George Henry ("Henry") a
Member of the Board of Directors of PhoneTel Technologies, Inc., an Ohio
corporation (the "Company"), and Davel Communications Group, Inc. ("Old Davel").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
the Company, Old Davel, Davel Holdings, Inc., a Delaware corporation and a
wholly owned subsidiary of Old Davel ("New Davel"), D Subsidiary, Inc., an
Illinois corporation and a wholly owned subsidiary of New Davel ("D Sub"), and
PT Merger Corp., an Ohio corporation and a wholly owned subsidiary of New Davel
("P Sub"), have entered into an Agreement and Plan of Merger and Reorganization
(the "Merger Agreement"), dated the date hereof, pursuant to which (i) D Sub
will be merged with and into Old Davel with Old Davel surviving as a wholly
owned subsidiary of New Davel (the "Davel Merger") and (ii) P Sub will be merged
with and into the Company with the Company surviving as a wholly owned
subsidiary of New Davel (the "PhoneTel Merger").

     WHEREAS, the consummation of the Davel Merger, the PhoneTel Merger and the
other transactions contemplated by the Merger Agreement (the "Transaction") is
subject to certain conditions, including the approval of the Merger Agreement
and the PhoneTel Merger by the holders of at least a majority of the outstanding
shares of common stock, par $.01 per share, of PhoneTel ("PhoneTel Common
Stock").

     WHEREAS, Henry is the record and beneficial owner of 340,376 shares of
PhoneTel Common Stock (the "Owned Shares") representing approximately 2.0% of
the shares of PhoneTel Common Stock outstanding as of June 1, 1998. Henry is
also the holder of 25,000 options to purchase shares of PhoneTel Common Stock
and warrants to purchase 25,000 shares of PhoneTel Common Stock. Such 340,376
shares of PhoneTel Common Stock, together with any other shares of capital stock
of PhoneTel acquired by Henry after the date hereof and during the term of this
Agreement, are collectively referred to herein as the "Shares".

     WHEREAS, as a condition to the willingness of Old Davel to enter into the
Merger Agreement, and as an inducement to Old Davel to do so, Henry has agreed
for the benefit of Old Davel as set forth in this Agreement.

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

                                   ARTICLE I

                              COVENANTS OF HENRY

     Section 1.1    Agreement to Vote.  At any meeting of the shareholders of
                    -----------------                                        
PhoneTel held prior to the Termination Date (as defined in Section 4.4), however
called, and at every reconvened meeting following any adjournment thereof prior
to the Termination Date, or in connection with any written consent of the
shareholders of Old Davel executed prior to the Termination Date, Henry shall
<PAGE>
 
vote the Shares in favor of the approval of the Merger Agreement, the PhoneTel
Merger and each of the actions contemplated by the Merger Agreement to be
performed by PhoneTel in connection with the Transaction and any actions
required in furtherance thereof. Prior to the Termination Date and subject to
Section 1.3, Henry shall not enter into any agreement or understanding with any
person, directly or indirectly, to vote, grant any proxy or give instructions
with respect to the voting of the Shares in any manner inconsistent with the
preceding sentence.

     Section 1.2    Proxies.  (a) Henry hereby revokes any and all previous
                    -------                                                
proxies granted with respect to matters set forth in Section 1.1 for the Shares.

     (b)  Prior to the Termination Date, Henry shall not grant any proxies or
powers of attorney with respect to matters set forth in Section 1.1, deposit any
of the Shares into a voting trust or enter into a voting agreement, with respect
to any of the Shares, in each case with respect to such matters.

     Section 1.3    Transfer of Shares by Henry.  Prior to the Termination Date
                    ---------------------------                                
Henry shall not (a) pledge or place any encumbrance on any Shares, other than
pursuant to this Agreement, or (b) transfer, sell, exchange or otherwise dispose
of any Shares, in each case unless the pledgee, encumbrance holder, transferee,
purchaser or acquiror of such shares enters into a Voting Agreement with Old
Davel containing substantially the same terms as this Agreement.

     Section 1.4    Action in Shareholder Capacity Only.  Henry makes no 
                    -----------------------------------                     
agreement or understanding herein in any capacity other than his capacity as a
record holder and beneficial owner of the Shares, and nothing herein shall limit
or affect any actions taken in any other capacity.

                                  ARTICLE II

                        REPRESENTATIONS, WARRANTIES AND
                         ADDITIONAL COVENANTS OF HENRY

     Henry represents, warrants and covenants to Old Davel that:

     Section 2.1    Ownership.  Henry is, as of the date hereof, the beneficial
                    ---------                                                  
and record owner of 340,376 shares of PhoneTel Common Stock and has the sole
right to vote such shares, and there are no restrictions on rights of
disposition or other liens pertaining to such shares. None of such shares is
subject to any voting trust or other agreement, arrangement or restriction with
respect to the voting of such shares.

     Section 2.2    Authority and Non-Contravention.  Henry has the right, power
                    -------------------------------                             
and authority to enter into this Agreement and to consummate the transactions
contemplated by this Agreement. This Agreement has been duly executed and
delivered by Henry and constitutes a valid and binding obligation of Henry,
enforceable against Henry in accordance with its terms, subject to general
principles of equity and as may be limited by bankruptcy, insolvency,
moratorium, or similar laws affecting creditors' rights generally. Neither the
execution and delivery of this Agreement by Henry nor the consummation by Henry
of the transactions contemplated hereby will (i) materially violate, or require
any consent, approval or notice under, any provision of any judgment, order,
decree, statute, law, rule or regulation applicable to Henry or the Shares or
(ii) constitute a material violation

                                      -2-
<PAGE>
 
of or default under any contract, commitment, agreement, understanding,
arrangement or other restriction of any kind to which Henry is a party or by
which Henry or his assets are bound.

     Section 2.3    Total Shares.  Except for options to purchase 25,000 shares 
                    ------------
of Stock, Henry does not have any option to purchase or right to subscribe for
or otherwise acquire any securities of PhoneTel and, other than with respect to
the Owned Shares, has no other interest in or voting rights with respect to any
other securities of PhoneTel

     Section 2.4    Reasonable Efforts.  Prior to the Termination Date, Henry
                    ------------------                                       
shall use reasonable efforts to take, or cause to be taken, all actions, and to
do, or cause to be done, and to assist and cooperate with PhoneTel in doing, all
things reasonably necessary, proper or advisable to consummate and make
effective, in the most expeditious manner reasonably practicable, the
Transaction.

                                  ARTICLE III

                 REPRESENTATIONS, WARRANTIES AND COVENANTS OF
                                   OLD DAVEL

     Old Davel represents, warrants and covenants to Henry that:

     Section 3.1    Authority and Non-Contravention.  Old Davel has the right,
                    -------------------------------                           
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement. The execution and delivery of this
Agreement by Old Davel and the consummation of the transactions contemplated by
this Agreement have been duly authorized by all necessary action on the part of
Old Davel. This Agreement has been duly executed and delivered by Old Davel and
constitutes a valid and binding obligation of Old Davel, enforceable against Old
Davel in accordance with its terms, subject to general principles of equity and
as may be limited by bankruptcy, insolvency, moratorium or similar laws
affecting creditors' rights generally. Neither the execution and delivery of
this Agreement nor the consummation by Old Davel of the transactions
contemplated hereby will (i) materially violate, or require any consent,
approval or notice under, any provision of any judgment, order, decree, statute,
law, rule or regulation applicable to Old Davel or (ii) violate or conflict with
the articles of incorporation or code of regulations of Old Davel or constitute
a material violation of or default under any contract, commitment, agreement,
understanding, arrangement or other restriction of any kind to which Old Davel
is a party or by which Old Davel or its assets are bound.

                                  ARTICLE IV

                                 MISCELLANEOUS

     Section 4.1    Expenses.  All costs and expenses incurred in connection 
                    --------                                                 
with this Agreement shall be paid by the party incurring such costs or expenses.

                                      -3-
<PAGE>
 
     Section 4.2    Further Assurances.  From time to time, at the request of 
                    ------------------                                       
Old Davel, in the case of Henry, or at the request of Henry, in the case of Old
Davel, and without further consideration, each party shall execute and deliver
or cause to be executed and delivered such additional documents and instruments
and take all such further action as may be reasonably necessary or desirable to
consummate the transactions contemplated by this Agreement.

     Section 4.3    Specific Performance.  Henry agrees that Old Davel would be
                    --------------------                                       
irreparably damaged if for any reason Henry fails to perform any of Henry's
obligations under this Agreement, and that Old Davel would not have an adequate
remedy at law for money damages in such event. Accordingly, Old Davel shall be
entitled to seek specific performance and injunctive and other equitable relief
to enforce the performance of this Agreement by Henry. This provision is without
prejudice to any other rights that Old Davel may have against Henry for any
failure to perform its obligations under this Agreement.

     Section 4.4    Amendments, Termination.  This Agreement may not be modified
                    -----------------------                                     
or amended except by an instrument or instruments in writing signed by each
party hereto. The representations, warranties, covenants and agreements set
forth in Article I, Article II and Article III shall terminate, except with
respect to liability for prior breaches thereof, upon the earliest to occur of
(i) termination of the Merger Agreement in accordance with its terms, (ii) the
Closing Date and (iii) the date, if any, upon which the Company's Board of
Directors withdraws, modifies or changes its recommendation or approval of the
Merger Agreement or the PhoneTel Merger in a manner adverse to Old Davel (the
"Termination Date").

     Section 4.5    Assignment.  Subject to Section 1.3 hereof, neither this
                    ----------                                              
Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise by any
of the parties without the prior written consent of the other parties. Subject
to the preceding sentence, this Agreement shall be binding upon, and inure to
the benefit of, the parties hereto and their respective successors and assigns.

     Section 4.6    Certain Events.  Henry agrees that this Agreement and the
                    --------------                                           
obligations hereunder shall attach to the Shares and shall be binding upon any
person to which legal or beneficial ownership of such shares shall pass, whether
by operation of law or otherwise.

     Section 4.7    Entire Agreement.  This Agreement (including the documents
                    ----------------                                          
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understanding, both oral and written between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties hereto any rights or remedies.

     Section 4.8    Notices.  All notices and other communications hereunder 
                    -------                                                  
shall be in writing and shall be deemed given if delivered personally, sent by
documented overnight delivery service or telecopied with confirmation of
receipt, to the parties at the addresses specified below (or at such other
address or telecopy or telex number for a party as shall be specified by like
notice):

          If to Old Davel to:

               Davel Communications Group, Inc.

                                      -4-
<PAGE>
 
               1429 Massaro Boulevard
               Tampa, Florida  33619
               Attention:  General Counsel
               Telecopy number: 813.626.9610

          with a copy to:

               Kirkland & Ellis
               200 East Randolph Drive
               Chicago, Illinois  60601
               Attention: R. Scott Falk
               Telecopy number: 312.861.2200

          If to Henry, to:

               George Henry
               1725 York Avenue, #4F
               New York, New York  10128

     Section 4.9    Governing Law.  This Agreement shall be governed by, and
                    -------------                                           
construed in accordance with, the laws of the State of Ohio regardless of the
laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 4.10   Counterparts.  This Agreement may be executed in two or more
                    ------------                                                
counterparts, all of which shall be considered one and the same agreement, and,
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties in original or facsimile form.

     Section 4.11   Interpretation.  The headings contained in this Agreement
                    --------------                                           
are inserted for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

     Section 4.12   Severability.  Any provision hereof which is invalid or
                    ------------                                           
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 4.13   Consent to Jurisdiction.  Each party hereto irrevocably
                    -----------------------                                
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
Ohio and (b) the United States federal district courts located in the State of
Illinois for the purposes of any suit, action or other proceeding arising out of
this Agreement or any transaction contemplated hereby.

     Section 4.14   Attorney's Fees.  If any action at law or in equity is
                    ---------------                                       
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorneys' fees, costs and necessary
disbursements, in addition to any other relief to which such party may be
entitled.

                                      -5-
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed by or on behalf of each
of the parties as of the date first above written.


                                        /s/ George Henry
                                        ----------------------------------------
                                        George Henry


                                        DAVEL COMMUNICATIONS GROUP, INC.


                                        By:  /s/ Theodore C. Rammelkamp, Jr.
                                           -------------------------------------
                                        Name:   Theodore C. Rammelkamp, Jr.
                                        Title:  Senior Vice President

                                      -6-

<PAGE>
 
                                                                    EXHIBIT 10.6

                                VOTING AGREEMENT

     VOTING AGREEMENT, dated June 11, 1998, between Mr. Steven Richman
("Richman") a Member of the Board of Directors of PhoneTel Technologies, Inc.,
an Ohio corporation (the "Company"), and Davel Communications Group, Inc. ("Old
Davel").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
the Company, Old Davel, Davel Holdings, Inc., a Delaware corporation and a
wholly owned subsidiary of Old Davel ("New Davel"), D Subsidiary, Inc., an
Illinois corporation and a wholly owned subsidiary of New Davel ("D Sub"), and
PT Merger Corp., an Ohio corporation and a wholly owned subsidiary of New Davel
("P Sub"), have entered into an Agreement and Plan of Merger and Reorganization
(the "Merger Agreement"), dated the date hereof, pursuant to which (i) D Sub
will be merged with and into Old Davel with Old Davel surviving as a wholly
owned subsidiary of New Davel (the "Davel Merger") and (ii) P Sub will be merged
with and into the Company with the Company surviving as a wholly owned
subsidiary of New Davel (the "PhoneTel Merger").

     WHEREAS, the consummation of the Davel Merger, the PhoneTel Merger and the
other transactions contemplated by the Merger Agreement (the "Transaction") is
subject to certain conditions, including the approval of the Merger Agreement
and the PhoneTel Merger by the holders of at least a majority of the outstanding
shares of common stock, par $.01 per share, of PhoneTel ("PhoneTel Common
Stock").

     WHEREAS, Richman is the record and beneficial owner of 191,794 shares of
PhoneTel Common Stock (the "Owned Shares") representing approximately 1.2% of
the shares of PhoneTel Common Stock outstanding as of June 1, 1998.  Richman is
also the holder of 56,966 warrants to purchase shares of PhoneTel Common Stock.
Such 191,794 shares of PhoneTel Common Stock, together with any other shares of
capital stock of PhoneTel acquired by Richman after the date hereof and during
the  term of this Agreement, are collectively referred to herein as the
"Shares".

     WHEREAS, as a condition to the willingness of Old Davel to enter into the
Merger Agreement, and as an inducement to Old Davel to do so, Richman has agreed
for the benefit of Old Davel as set forth in this Agreement.

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

                                   ARTICLE I

                              COVENANTS OF RICHMAN

     Section 1.1  Agreement to Vote.  At any meeting of the shareholders of
                  -----------------                                        
PhoneTel held prior to the Termination Date (as defined in Section 4.4), however
called, and at every reconvened meeting following any adjournment thereof prior
to the Termination Date, or in connection with any written consent of the
shareholders of Old Davel executed prior to the Termination Date, Richman shall
vote the Shares in favor of the approval of the Merger Agreement, the PhoneTel
Merger and
<PAGE>
 
each of the actions contemplated by the Merger Agreement to be performed by
PhoneTel in connection with the Transaction and any actions required in
furtherance thereof. Prior to the Termination Date and subject to Section 1.3,
Richman shall not enter into any agreement or understanding with any person,
directly or indirectly, to vote, grant any proxy or give instructions with
respect to the voting of the Shares in any manner inconsistent with the
preceding sentence.

     Section 1.2  Proxies.  (a) Richman hereby revokes any and all previous
                  -------                                                  
proxies granted with respect to matters set forth in Section 1.1 for the Shares.

     (b) Prior to the Termination Date, Richman shall not grant any proxies or
powers of attorney with respect to matters set forth in Section 1.1, deposit any
of the Shares into a voting trust or enter into a voting agreement, with respect
to any of the Shares, in each case with respect to such matters.

     Section 1.3  Transfer of Shares by Richman.  Prior to the Termination Date
                  -----------------------------                                
Richman shall not (a) pledge or place any encumbrance on any Shares, other than
pursuant to this Agreement, or (b) transfer, sell, exchange or otherwise dispose
of any Shares, in each case unless the pledgee, encumbrance holder, transferee,
purchaser or acquiror of such shares enters into a Voting Agreement with Old
Davel containing substantially the same terms as this Agreement.

     Section 1.4  Action in Shareholder Capacity Only.  Richman makes no
                  -----------------------------------                   
agreement or understanding herein in any capacity other than his capacity as a
record holder and beneficial owner of the Shares, and nothing herein shall limit
or affect any actions taken in any other capacity.

                                   ARTICLE II

                        REPRESENTATIONS, WARRANTIES AND
                        ADDITIONAL COVENANTS OF RICHMAN

     Richman represents, warrants and covenants to Old Davel that:

     Section 2.1  Ownership.  Richman is, as of the date hereof, the beneficial
                  ---------                                                    
and record owner of 191,794 shares of PhoneTel Common Stock and has the sole
right to vote such shares, and there are no restrictions on rights of
disposition or other liens pertaining to such shares.  None of such shares is
subject to any voting trust or other agreement, arrangement or restriction with
respect to the voting of such shares.

     Section 2.2  Authority and Non-Contravention.  Richman has the right, power
                  -------------------------------                               
and authority to enter into this Agreement and to consummate the transactions
contemplated by this Agreement.  This Agreement has been duly executed and
delivered by Richman and constitutes a valid and binding obligation of Richman,
enforceable against Richman in accordance with its terms, subject to general
principles of equity and as may be limited by bankruptcy, insolvency,
moratorium, or similar laws affecting creditors' rights generally.  Neither the
execution and delivery of this Agreement by Richman nor the consummation by
Richman of the transactions contemplated hereby will (i) materially violate, or
require any consent, approval or notice under, any provision of any judgment,
order, decree, statute, law, rule or regulation applicable to Richman or the
Shares or (ii)

                                      -2-
<PAGE>
 
constitute a material violation of or default under any contract, commitment,
agreement, understanding, arrangement or other restriction of any kind to which
Richman is a party or by which Richman or his assets are bound.

     Section 2.3  Total Shares.  Except for warrants to purchase 56,966 shares
                  ------------                                                
of PhoneTel Common Stock, Richman does not have any option to purchase or right
to subscribe for or otherwise acquire any securities of PhoneTel and, other than
with respect to the Owned Shares, has no other interest in or voting rights with
respect to any other securities of PhoneTel

     Section 2.4  Reasonable Efforts.  Prior to the Termination Date, Richman
                  ------------------                                         
shall use reasonable efforts to take, or cause to be taken, all actions, and to
do, or cause to be done, and to assist and cooperate with PhoneTel in doing, all
things reasonably necessary, proper or advisable to consummate and make
effective, in the most expeditious manner reasonably practicable, the
Transaction.

                                  ARTICLE III

                  REPRESENTATIONS, WARRANTIES AND COVENANTS OF
                                   OLD DAVEL

     Old Davel represents, warrants and covenants to Richman that:

     Section 3.1  Authority and Non-Contravention.  Old Davel has the right,
                  -------------------------------                           
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement.  The execution and delivery of this
Agreement by Old Davel and the consummation of the transactions contemplated by
this Agreement have been duly authorized by all necessary action on the part of
Old Davel.  This Agreement has been duly executed and delivered by Old Davel and
constitutes a valid and binding obligation of Old Davel, enforceable against Old
Davel in accordance with its terms, subject to general principles of equity and
as may be limited by bankruptcy, insolvency, moratorium or similar laws
affecting creditors' rights generally.  Neither the execution and delivery of
this Agreement nor the consummation by Old Davel of the transactions
contemplated hereby will (i) materially violate, or require any consent,
approval or notice under, any provision of any judgment, order, decree, statute,
law, rule or regulation applicable to Old Davel or (ii) violate or conflict with
the articles of incorporation or code of regulations of Old Davel or constitute
a material violation of or default under any contract, commitment, agreement,
understanding, arrangement or other restriction of any kind to which Old Davel
is a party or by which Old Davel or its assets are bound.

                                   ARTICLE IV

                                 MISCELLANEOUS

     Section 4.1  Expenses.  All costs and expenses incurred in connection with
                  --------                                                     
this Agreement shall be paid by the party incurring such costs or expenses.

                                      -3-
<PAGE>
 
     Section 4.2  Further Assurances.  From time to time, at the request of Old
                  ------------------                                           
Davel, in the case of Richman, or at the request of Richman, in the case of Old
Davel, and without further consideration, each party shall execute and deliver
or cause to be executed and delivered such additional documents and instruments
and take all such further action as may be reasonably necessary or desirable to
consummate the transactions contemplated by this Agreement.

     Section 4.3  Specific Performance.  Richman agrees that Old Davel would be
                  --------------------                                         
irreparably damaged if for any reason Richman fails to perform any of Richman's
obligations under this Agreement, and that Old Davel would not have an adequate
remedy at law for money damages in such event.  Accordingly, Old Davel shall be
entitled to seek specific performance and injunctive and other equitable relief
to enforce the performance of this Agreement by Richman.  This provision is
without prejudice to any other rights that Old Davel may have against Richman
for any failure to perform its obligations under this Agreement.

     Section 4.4  Amendments, Termination.  This Agreement may not be modified
                  -----------------------                                     
or amended except by an instrument or instruments in writing signed by each
party hereto.  The representations, warranties, covenants and agreements set
forth in Article I, Article II and Article III shall terminate, except with
respect to liability for prior breaches thereof, upon the earliest to occur of
(i) termination of the Merger Agreement in accordance with its terms, (ii) the
Closing Date and (iii) the date, if any, upon which the Company's Board of
Directors withdraws, modifies or changes its recommendation or approval of the
Merger Agreement or the PhoneTel Merger in a manner adverse to Old Davel (the
"Termination Date").

     Section 4.5  Assignment.  Subject to Section 1.3 hereof, neither this
                  ----------                                              
Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise by any
of the parties without the prior written consent of the other parties.  Subject
to the preceding sentence, this Agreement shall be binding upon, and inure to
the benefit of, the parties hereto and their respective successors and assigns.

     Section 4.6  Certain Events.  Richman agrees that this Agreement and the
                  --------------                                             
obligations hereunder shall attach to the Shares and shall be binding upon any
person to which legal or beneficial ownership of such shares shall pass, whether
by operation of law or otherwise.

     Section 4.7  Entire Agreement.  This Agreement (including the documents
                  ----------------                                          
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understanding, both oral and written between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties hereto any rights or remedies.

     Section 4.8  Notices.  All notices and other communications hereunder shall
                  -------                                                       
be in writing and shall be deemed given if delivered personally, sent by
documented overnight delivery service or telecopied with confirmation of
receipt, to the parties at the addresses specified below (or at such other
address or telecopy or telex number for a party as shall be specified by like
notice):

          If to Old Davel to:

               Davel Communications Group, Inc.

                                      -4-
<PAGE>
 
               1429 Massaro Boulevard
               Tampa, Florida  33619
               Attention:  General Counsel
               Telecopy number: 813.626.9610

          with a copy to:

               Kirkland & Ellis
               200 East Randolph Drive
               Chicago, Illinois  60601
               Attention: R. Scott Falk
               Telecopy number: 312.861.2200

          If to Richman, to:

               Steven Richman
               9 Beech Lane
               Kings Point, New Jersey  11024

     Section 4.9   Governing Law.  This Agreement shall be governed by, and
                   -------------                                           
construed in accordance with, the laws of the State of Ohio regardless of the
laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 4.10  Counterparts.  This Agreement may be executed in two or more
                   ------------                                                
counterparts, all of which shall be considered one and the same agreement, and,
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties in original or facsimile form.

     Section 4.11  Interpretation.  The headings contained in this Agreement
                   --------------                                           
are inserted for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

     Section 4.12  Severability.  Any provision hereof which is invalid or
                    ------------                                           
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 4.13  Consent to Jurisdiction.  Each party hereto irrevocably
                   -----------------------                                
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
Ohio and (b) the United States federal district courts located in the State of
Illinois for the purposes of any suit, action or other proceeding arising out of
this Agreement or any transaction contemplated hereby.

     Section 4.14  Attorney's Fees.  If any action at law or in equity is
                   ---------------                                       
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorneys' fees, costs and necessary
disbursements, in addition to any other relief to which such party may be
entitled.

                                      -5-
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed by or on behalf of each
of the parties as of the date first above written.



                               /s/ Steven Richman
                              ------------------------------------
                              Steven Richman


                              DAVEL COMMUNICATIONS GROUP, INC.


                              By: /s/ Theodore C. Rammelkamp, Jr.
                                 ---------------------------------
                              Name:  Theodore C. Rammelkamp, Jr.
                              Title: Senior Vice President

                                      -6-

<PAGE>
 
                                                                    EXHIBIT 10.7

                               VOTING AGREEMENT

     VOTING AGREEMENT, dated June 11, 1998, between Mr. Aron Katzman ("Katzman")
a Member of the Board of Directors of PhoneTel Technologies, Inc., an Ohio
corporation (the "Company"), and Davel Communications Group, Inc. ("Old Davel").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
the Company, Old Davel, Davel Holdings, Inc., a Delaware corporation and a
wholly owned subsidiary of Old Davel ("New Davel"), D Subsidiary, Inc., an
Illinois corporation and a wholly owned subsidiary of New Davel ("D Sub"), and
PT Merger Corp., an Ohio corporation and a wholly owned subsidiary of New Davel
("P Sub"), have entered into an Agreement and Plan of Merger and Reorganization
(the "Merger Agreement"), dated the date hereof, pursuant to which (i) D Sub
will be merged with and into Old Davel with Old Davel surviving as a wholly
owned subsidiary of New Davel (the "Davel Merger") and (ii) P Sub will be merged
with and into the Company with the Company surviving as a wholly owned
subsidiary of New Davel (the "PhoneTel Merger").

     WHEREAS, the consummation of the Davel Merger, the PhoneTel Merger and the
other transactions contemplated by the Merger Agreement (the "Transaction") is
subject to certain conditions, including the approval of the Merger Agreement
and the PhoneTel Merger by the holders of at least a majority of the outstanding
shares of common stock, par $.01 per share, of PhoneTel ("PhoneTel Common
Stock").

     WHEREAS, Katzman is the record and beneficial owner of 212,195 shares of
PhoneTel Common Stock (the "Owned Shares") representing approximately 1.3% of
the shares of PhoneTel Common Stock outstanding as of June 1, 1998. Katzman is
also the holder of 25,000 warrants to purchase shares of PhoneTel Common Stock.
Such 212,195 shares of PhoneTel Common Stock, together with any other shares of
capital stock of PhoneTel acquired by Katzman after the date hereof and during
the  term of this Agreement, are collectively referred to herein as the
"Shares".

     WHEREAS, as a condition to the willingness of Old Davel to enter into the
Merger Agreement, and as an inducement to Old Davel to do so, Katzman has agreed
for the benefit of Old Davel as set forth in this Agreement.

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

                                   ARTICLE I

                             COVENANTS OF KATZMAN

     Section 1.1  Agreement to Vote.  At any meeting of the shareholders of
                  -----------------                                        
PhoneTel held prior to the Termination Date (as defined in Section 4.4), however
called, and at every reconvened meeting following any adjournment thereof prior
to the Termination Date, or in connection with any written consent of the
shareholders of Old Davel executed prior to the Termination Date, Katzman shall
vote the Shares in favor of the approval of the Merger Agreement, the PhoneTel
Merger and
<PAGE>
 
each of the actions contemplated by the Merger Agreement to be performed by
PhoneTel in connection with the Transaction and any actions required in
furtherance thereof. Prior to the Termination Date and subject to Section 1.3,
Katzman shall not enter into any agreement or understanding with any person,
directly or indirectly, to vote, grant any proxy or give instructions with
respect to the voting of the Shares in any manner inconsistent with the
preceding sentence.

     Section 1.2  Proxies.  (a) Katzman hereby revokes any and all previous
                  -------                                                  
proxies granted with respect to matters set forth in Section 1.1 for the Shares.

     (b)  Prior to the Termination Date, Katzman shall not grant any proxies or
powers of attorney with respect to matters set forth in Section 1.1, deposit any
of the Shares into a voting trust or enter into a voting agreement, with respect
to any of the Shares, in each case with respect to such matters.

     Section 1.3  Transfer of Shares by Katzman.  Prior to the Termination Date
                  -----------------------------                                
Katzman shall not (a) pledge or place any encumbrance on any Shares, other than
pursuant to this Agreement, or (b) transfer, sell, exchange or otherwise dispose
of any Shares, in each case unless the pledgee, encumbrance holder, transferee,
purchaser or acquiror of such shares enters into a Voting Agreement with Old
Davel containing substantially the same terms as this Agreement.

     Section 1.4  Action in Shareholder Capacity Only.  Katzman makes no
                  -----------------------------------                   
agreement or understanding herein in any capacity other than his capacity as a
record holder and beneficial owner of the Shares, and nothing herein shall limit
or affect any actions taken in any other capacity.

                                  ARTICLE II

                        REPRESENTATIONS, WARRANTIES AND
                        ADDITIONAL COVENANTS OF KATZMAN

     Katzman represents, warrants and covenants to Old Davel that:

     Section 2.1  Ownership.  Katzman is, as of the date hereof, the beneficial
                  ---------                                                    
and record owner of 212,195 shares of PhoneTel Common Stock and has the sole
right to vote such shares, and there are no restrictions on rights of
disposition or other liens pertaining to such shares.  None of such shares is
subject to any voting trust or other agreement, arrangement or restriction with
respect to the voting of such shares.

     Section 2.2  Authority and Non-Contravention.  Katzman has the right, power
                  -------------------------------                               
and authority to enter into this Agreement and to consummate the transactions
contemplated by this Agreement.  This Agreement has been duly executed and
delivered by Katzman and constitutes a valid and binding obligation of Katzman,
enforceable against Katzman in accordance with its terms, subject to general
principles of equity and as may be limited by bankruptcy, insolvency,
moratorium, or similar laws affecting creditors' rights generally.  Neither the
execution and delivery of this Agreement by Katzman nor the consummation by
Katzman of the transactions contemplated hereby will (i) materially violate, or
require any consent, approval or notice under, any provision of any judgment,
order, decree, statute, law, rule or regulation applicable to Katzman or the
Shares or (ii)

                                      -2-
<PAGE>
 
constitute a material violation of or default under any contract, commitment,
agreement, understanding, arrangement or other restriction of any kind to which
Katzman is a party or by which Katzman or his assets are bound.

     Section 2.3  Total Shares.  Except for warrants to purchase 25,000 shares
                  ------------                                                
of PhoneTel Common Stock, Katzman does not have any option to purchase or right
to subscribe for or otherwise acquire any securities of PhoneTel and, other than
with respect to the Owned Shares, has no other interest in or voting rights with
respect to any other securities of PhoneTel

     Section 2.4  Reasonable Efforts.  Prior to the Termination Date, Katzman
                  ------------------                                         
shall use reasonable efforts to take, or cause to be taken, all actions, and to
do, or cause to be done, and to assist and cooperate with PhoneTel in doing, all
things reasonably necessary, proper or advisable to consummate and make
effective, in the most expeditious manner reasonably practicable, the
Transaction.

                                  ARTICLE III

                 REPRESENTATIONS, WARRANTIES AND COVENANTS OF
                                   OLD DAVEL

     Old Davel represents, warrants and covenants to Katzman that:

     Section 3.1  Authority and Non-Contravention.  Old Davel has the right,
                  -------------------------------                           
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement.  The execution and delivery of this
Agreement by Old Davel and the consummation of the transactions contemplated by
this Agreement have been duly authorized by all necessary action on the part of
Old Davel.  This Agreement has been duly executed and delivered by Old Davel and
constitutes a valid and binding obligation of Old Davel, enforceable against Old
Davel in accordance with its terms, subject to general principles of equity and
as may be limited by bankruptcy, insolvency, moratorium or similar laws
affecting creditors' rights generally.  Neither the execution and delivery of
this Agreement nor the consummation by Old Davel of the transactions
contemplated hereby will (i) materially violate, or require any consent,
approval or notice under, any provision of any judgment, order, decree, statute,
law, rule or regulation applicable to Old Davel or (ii) violate or conflict with
the articles of incorporation or code of regulations of Old Davel or constitute
a material violation of or default under any contract, commitment, agreement,
understanding, arrangement or other restriction of any kind to which Old Davel
is a party or by which Old Davel or its assets are bound.

                                  ARTICLE IV

                                 MISCELLANEOUS

     Section 4.1  Expenses.  All costs and expenses incurred in connection with
                  --------                                                     
this Agreement shall be paid by the party incurring such costs or expenses.

                                      -3-
<PAGE>
 
     Section 4.2  Further Assurances.  From time to time, at the request of Old
                  ------------------                                           
Davel, in the case of Katzman, or at the request of Katzman, in the case of Old
Davel, and without further consideration, each party shall execute and deliver
or cause to be executed and delivered such additional documents and instruments
and take all such further action as may be reasonably necessary or desirable to
consummate the transactions contemplated by this Agreement.

     Section 4.3  Specific Performance.  Katzman agrees that Old Davel would be
                  --------------------                                         
irreparably damaged if for any reason Katzman fails to perform any of Katzman's
obligations under this Agreement, and that Old Davel would not have an adequate
remedy at law for money damages in such event.  Accordingly, Old Davel shall be
entitled to seek specific performance and injunctive and other equitable relief
to enforce the performance of this Agreement by Katzman.  This provision is
without prejudice to any other rights that Old Davel may have against Katzman
for any failure to perform its obligations under this Agreement.

     Section 4.4  Amendments, Termination.  This Agreement may not be modified
                  -----------------------                                     
or amended except by an instrument or instruments in writing signed by each
party hereto.  The representations, warranties, covenants and agreements set
forth in Article I, Article II and Article III shall terminate, except with
respect to liability for prior breaches thereof, upon the earliest to occur of
(i) termination of the Merger Agreement in accordance with its terms, (ii) the
Closing Date and (iii) the date, if any, upon which the Company's Board of
Directors withdraws, modifies or changes its recommendation or approval of the
Merger Agreement or the PhoneTel Merger in a manner adverse to Old Davel (the
"Termination Date").

     Section 4.5  Assignment.  Subject to Section 1.3 hereof, neither this
                  ----------                                              
Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise by any
of the parties without the prior written consent of the other parties.  Subject
to the preceding sentence, this Agreement shall be binding upon, and inure to
the benefit of, the parties hereto and their respective successors and assigns.

     Section 4.6  Certain Events.  Katzman agrees that this Agreement and the
                  --------------                                             
obligations hereunder shall attach to the Shares and shall be binding upon any
person to which legal or beneficial ownership of such shares shall pass, whether
by operation of law or otherwise.

     Section 4.7  Entire Agreement.  This Agreement (including the documents
                  ----------------                                          
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understanding, both oral and written between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties hereto any rights or remedies.

     Section 4.8  Notices.  All notices and other communications hereunder shall
                  -------                                                       
be in writing and shall be deemed given if delivered personally, sent by
documented overnight delivery service or telecopied with confirmation of
receipt, to the parties at the addresses specified below (or at such other
address or telecopy or telex number for a party as shall be specified by like
notice):

          If to Old Davel to:

               Davel Communications Group, Inc.

                                      -4-
<PAGE>
 
               1429 Massaro Boulevard
               Tampa, Florida  33619
               Attention:  General Counsel
               Telecopy number: 813.626.9610

          with a copy to:

               Kirkland & Ellis
               200 East Randolph Drive
               Chicago, Illinois  60601
               Attention: R. Scott Falk
               Telecopy number: 312.861.2200

          If to Katzman, to:

               Aron Katzman
               10 Layton Terrace
               St.  Louis, Missouri 63124
               Telecopy number: (314) 962-8632

     Section 4.9    Governing Law.  This Agreement shall be governed by, and
                    -------------                                           
construed in accordance with, the laws of the State of Ohio regardless of the
laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 4.10   Counterparts.  This Agreement may be executed in two or more
                    ------------                                                
counterparts, all of which shall be considered one and the same agreement, and,
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties in original or facsimile form.

     Section 4.11   Interpretation.  The headings contained in this Agreement
                    --------------                                           
are inserted for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

     Section 4.12   Severability.  Any provision hereof which is invalid or
                    ------------                                           
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 4.13   Consent to Jurisdiction.  Each party hereto irrevocably
                    -----------------------                                
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
Ohio and (b) the United States federal district courts located in the State of
Illinois for the purposes of any suit, action or other proceeding arising out of
this Agreement or any transaction contemplated hereby.

     Section 4.14   Attorney's Fees.  If any action at law or in equity is
                    ---------------                                       
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorneys' fees, costs and necessary
disbursements, in addition to any other relief to which such party may be
entitled.

                                      -5-
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed by or on behalf of each
of the parties as of the date first above written.



                              /s/ Aron Katzman
                              ----------------------------------------
                              Aron Katzman


                              DAVEL COMMUNICATIONS GROUP, INC.


                              By: /s/ Theodore C. Rammelkamp, Jr.
                                 -------------------------------------
                              Name:  Theodore C. Rammelkamp, Jr.
                              Title: Senior Vice President

                                      -6-

<PAGE>
 
                                                                    EXHIBIT 10.8

                               VOTING AGREEMENT

     VOTING AGREEMENT, dated June 11, 1998, between Mr. Joseph Abrams ("Abrams")
a Member of the Board of Directors of PhoneTel Technologies, Inc., an Ohio
corporation (the "Company"), and Davel Communications Group, Inc. ("Old Davel").

     WHEREAS, concurrently with the execution and delivery of this Agreement,
the Company, Old Davel, Davel Holdings, Inc., a Delaware corporation and a
wholly owned subsidiary of Old Davel ("New Davel"), D Subsidiary, Inc., an
Illinois corporation and a wholly owned subsidiary of New Davel ("D Sub"), and
PT Merger Corp., an Ohio corporation and a wholly owned subsidiary of New Davel
("P Sub"), have entered into an Agreement and Plan of Merger and Reorganization
(the "Merger Agreement"), dated the date hereof, pursuant to which (i) D Sub
will be merged with and into Old Davel with Old Davel surviving as a wholly
owned subsidiary of New Davel (the "Davel Merger") and (ii) P Sub will be merged
with and into the Company with the Company surviving as a wholly owned
subsidiary of New Davel (the "PhoneTel Merger").

     WHEREAS, the consummation of the Davel Merger, the PhoneTel Merger and the
other transactions contemplated by the Merger Agreement (the "Transaction") is
subject to certain conditions, including the approval of the Merger Agreement
and the PhoneTel Merger by the holders of at least a majority of the outstanding
shares of common stock, par $.01 per share, of PhoneTel ("PhoneTel Common
Stock").

     WHEREAS, Abrams is the record and beneficial owner of 147,663 shares of
PhoneTel Common Stock (the "Owned Shares") representing approximately 0.9% of
the shares of PhoneTel Common Stock outstanding as of June 1, 1998. Abrams is
also the holder of 25,000 warrants to purchase shares of PhoneTel Common Stock.
Such 147,663 shares of PhoneTel Common Stock, together with any other shares of
capital stock of PhoneTel acquired by Abrams after the date hereof and during
the term of this Agreement, are collectively referred to herein as the "Shares".

     WHEREAS, as a condition to the willingness of Old Davel to enter into the
Merger Agreement, and as an inducement to Old Davel to do so, Abrams has agreed
for the benefit of Old Davel as set forth in this Agreement.

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

                                   ARTICLE I

                              COVENANTS OF ABRAMS

     Section 1.1    Agreement to Vote.  At any meeting of the shareholders of
                    -----------------                                        
PhoneTel held prior to the Termination Date (as defined in Section 4.4), however
called, and at every reconvened meeting following any adjournment thereof prior
to the Termination Date, or in connection with any written consent of the
shareholders of Old Davel executed prior to the Termination Date, Abrams shall
vote the Shares in favor of the approval of the Merger Agreement, the PhoneTel
Merger and
<PAGE>
 
each of the actions contemplated by the Merger Agreement to be performed by
PhoneTel in connection with the Transaction and any actions required in
furtherance thereof. Prior to the Termination Date and subject to Section 1.3,
Abrams shall not enter into any agreement or understanding with any person,
directly or indirectly, to vote, grant any proxy or give instructions with
respect to the voting of the Shares in any manner inconsistent with the
preceding sentence.

     Section 1.2    Proxies.  (a) Abrams hereby revokes any and all previous
                    -------                                                 
proxies granted with respect to matters set forth in Section 1.1 for the Shares.

     (b)  Prior to the Termination Date, Abrams shall not grant any proxies or
powers of attorney with respect to matters set forth in Section 1.1, deposit any
of the Shares into a voting trust or enter into a voting agreement, with respect
to any of the Shares, in each case with respect to such matters.

     Section 1.3    Transfer of Shares by Abrams.  Prior to the Termination Date
                    ----------------------------                                
Abrams shall not (a) pledge or place any encumbrance on any Shares, other than
pursuant to this Agreement, or (b) transfer, sell, exchange or otherwise dispose
of any Shares, in each case unless the pledgee, encumbrance holder, transferee,
purchaser or acquiror of such Shares enters into a Voting Agreement with Old
Davel containing substantially the same terms as this Agreement.

     Section 1.4    Action in Shareholder Capacity Only.  Abrams makes no
                    -----------------------------------                  
agreement or understanding herein in any capacity other than his capacity as a
record holder and beneficial owner of the Shares, and nothing herein shall limit
or affect any actions taken in any other capacity.

                                  ARTICLE II

                        REPRESENTATIONS, WARRANTIES AND
                        ADDITIONAL COVENANTS OF ABRAMS

     Abrams represents, warrants and covenants to Old Davel that:

     Section 2.1    Ownership.  Abrams is, as of the date hereof, the beneficial
                    ---------                                                   
and record owner of 147,663 shares of PhoneTel Common Stock and has the sole
right to vote such shares, and there are no restrictions on rights of
disposition or other liens pertaining to such shares. None of such shares is
subject to any voting trust or other agreement, arrangement or restriction with
respect to the voting of such shares.

     Section 2.2    Authority and Non-Contravention.  Abrams has the right, 
                    -------------------------------                          
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement. This Agreement has been duly
executed and delivered by Abrams and constitutes a valid and binding obligation
of Abrams, enforceable against Abrams in accordance with its terms, subject to
general principles of equity and as may be limited by bankruptcy, insolvency,
moratorium, or similar laws affecting creditors' rights generally. Neither the
execution and delivery of this Agreement by Abrams nor the consummation by
Abrams of the transactions contemplated hereby will (i) materially violate, or
require any consent, approval or notice under, any provision of any judgment,
order, decree, statute, law, rule or regulation applicable to Abrams or the
Shares or (ii) constitute a material

                                      -2-
<PAGE>
 
violation of or default under any contract, commitment, agreement,
understanding, arrangement or other restriction of any kind to which Abrams is a
party or by which Abrams or his assets are bound.

     Section 2.3    Total Shares.  Except for options to purchase 25,000 shares
                    ------------                                             
of PhoneTel Common Stock, Abrams does not have any option to purchase or right
to subscribe for or otherwise acquire any securities of PhoneTel and, other than
with respect to the Owned Shares, has no other interest in or voting rights with
respect to any other securities of PhoneTel

     Section 2.4    Reasonable Efforts.  Prior to the Termination Date, Abrams
                    ------------------                                        
shall use reasonable efforts to take, or cause to be taken, all actions, and to
do, or cause to be done, and to assist and cooperate with PhoneTel in doing, all
things reasonably necessary, proper or advisable to consummate and make
effective, in the most expeditious manner reasonably practicable, the
Transaction.

                                  ARTICLE III

                 REPRESENTATIONS, WARRANTIES AND COVENANTS OF
                                   OLD DAVEL

     Old Davel represents, warrants and covenants to Abrams that:

     Section 3.1    Authority and Non-Contravention.  Old Davel has the right,
                    -------------------------------                           
power and authority to enter into this Agreement and to consummate the
transactions contemplated by this Agreement. The execution and delivery of this
Agreement by Old Davel and the consummation of the transactions contemplated by
this Agreement have been duly authorized by all necessary action on the part of
Old Davel. This Agreement has been duly executed and delivered by Old Davel and
constitutes a valid and binding obligation of Old Davel, enforceable against Old
Davel in accordance with its terms, subject to general principles of equity and
as may be limited by bankruptcy, insolvency, moratorium or similar laws
affecting creditors' rights generally. Neither the execution and delivery of
this Agreement nor the consummation by Old Davel of the transactions
contemplated hereby will (i) materially violate, or require any consent,
approval or notice under, any provision of any judgment, order, decree, statute,
law, rule or regulation applicable to Old Davel or (ii) violate or conflict with
the articles of incorporation or code of regulations of Old Davel or constitute
a material violation of or default under any contract, commitment, agreement,
understanding, arrangement or other restriction of any kind to which Old Davel
is a party or by which Old Davel or its assets are bound.

                                  ARTICLE IV

                                 MISCELLANEOUS

     Section 4.1    Expenses.  All costs and expenses incurred in connection 
                    --------                                                
with this Agreement shall be paid by the party incurring such costs or expenses.

     Section 4.2    Further Assurances.  From time to time, at the request of 
                    ------------------                                       
Old Davel, in the case of Abrams, or at the request of Abrams, in the case of
Old Davel, and without further

                                      -3-
<PAGE>
 
consideration, each party shall execute and deliver or cause to be executed and
delivered such additional documents and instruments and take all such further
action as may be reasonably necessary or desirable to consummate the
transactions contemplated by this Agreement.

     Section 4.3    Specific Performance.  Abrams agrees that Old Davel would be
                    --------------------                                        
irreparably damaged if for any reason Abrams fails to perform any of Abrams's
obligations under this Agreement, and that Old Davel would not have an adequate
remedy at law for money damages in such event. Accordingly, Old Davel shall be
entitled to seek specific performance and injunctive and other equitable relief
to enforce the performance of this Agreement by Abrams. This provision is
without prejudice to any other rights that Old Davel may have against Abrams for
any failure to perform its obligations under this Agreement.

     Section 4.4    Amendments, Termination.  This Agreement may not be modified
                    -----------------------                                     
or amended except by an instrument or instruments in writing signed by each
party hereto. The representations, warranties, covenants and agreements set
forth in Article I, Article II and Article III shall terminate, except with
respect to liability for prior breaches thereof, upon the earliest to occur of
(i) termination of the Merger Agreement in accordance with its terms, (ii) the
Closing Date and (iii) the date, if any, upon which the Company's Board of
Directors withdraws, modifies or changes its recommendation or approval of the
Merger Agreement or the PhoneTel Merger in a manner adverse to Old Davel (the
"Termination Date").

     Section 4.5    Assignment.  Subject to Section 1.3 hereof, neither this
                    ----------                                              
Agreement nor any of the rights, interests or obligations under this Agreement
shall be assigned, in whole or in part, by operation of law or otherwise by any
of the parties without the prior written consent of the other parties. Subject
to the preceding sentence, this Agreement shall be binding upon, and inure to
the benefit of, the parties hereto and their respective successors and assigns.

     Section 4.6    Certain Events.  Abrams agrees that this Agreement and the
                    --------------                                            
obligations hereunder shall attach to the Shares and shall be binding upon any
person to which legal or beneficial ownership of such shares shall pass, whether
by operation of law or otherwise.

     Section 4.7    Entire Agreement.  This Agreement (including the documents
                    ----------------                                          
referred to herein) (a) constitutes the entire agreement, and supersedes all
prior agreements and understanding, both oral and written between the parties
with respect to the subject matter of this Agreement and (b) is not intended to
confer upon any person other than the parties hereto any rights or remedies.

     Section 4.8    Notices.  All notices and other communications hereunder be
                    -------                                             
in writing and shall be deemed given if delivered personally, sent by documented
overnight delivery service or telecopied with confirmation of receipt, to the
parties at the addresses specified below (or at such other address or telecopy
or telex number for a party as shall be specified by like notice):

          If to Old Davel to:

               Davel Communications Group, Inc.
               1429 Massaro Boulevard
               Tampa, Florida  33619

                                      -4-
<PAGE>
 
               Attention:  General Counsel
               Telecopy number: 813.626.9610

          with a copy to:

               Kirkland & Ellis
               200 East Randolph Drive
               Chicago, Illinois  60601
               Attention: R. Scott Falk
               Telecopy number: 312.861.2200

          If to Abrams, to:

               Joseph Abrams
               85 Old Farm Road
               Bedminister, New Jersey 07921

     Section 4.9    Governing Law.  This Agreement shall be governed by, and
                    -------------                                           
construed in accordance with, the laws of the State of Ohio regardless of the
laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

     Section 4.10   Counterparts.  This Agreement may be executed in two or more
                    ------------                                                
counterparts, all of which shall be considered one and the same agreement, and,
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties in original or facsimile form.

     Section 4.11   Interpretation.  The headings contained in this Agreement
                    --------------                                           
are inserted for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

     Section 4.12   Severability.  Any provision hereof which is invalid or
                    ------------                                           
unenforceable shall be ineffective to the extent of such invalidity or
unenforceability, without affecting in any way the remaining provisions hereof.

     Section 4.13   Consent to Jurisdiction.  Each party hereto irrevocably
                    -----------------------                                
submits to the nonexclusive jurisdiction of (a) the state courts of the State of
Ohio and (b) the United States federal district courts located in the State of
Illinois for the purposes of any suit, action or other proceeding arising out of
this Agreement or any transaction contemplated hereby.

     Section 4.14   Attorney's Fees.  If any action at law or in equity is
                    ---------------                                       
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to reasonable attorneys' fees, costs and necessary
disbursements, in addition to any other relief to which such party may be
entitled.

                                      -5-
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been signed by or on behalf of each
of the parties as of the date first above written.


                                        /s/ Joseph Abrams
                                        ----------------------------------------
                                        Joseph Abrams


                                        DAVEL COMMUNICATIONS GROUP, INC.


                                        By:  /s/ Theodore C. Rammelkamp, Jr.
                                           -------------------------------------
                                        Name:   Theodore C. Rammelkamp, Jr.
                                        Title:  Senior Vice President

<PAGE>
 
                                                                    EXHIBIT 99.1

Davel Communications Group and PhoneTel Technologies Announce Signing of Merger
Agreement


Combined Company will be the Nation's Largest Independent Payphone Provider

TAMPA, Fla. and CLEVELAND, June 12 /PRNewswire/ -- Davel Communications Group,
Inc. (Nasdaq: DAVL) and PhoneTel Technologies, Inc. (Amex: PHN), today announced
the signing of a definitive agreement to combine the two companies.  The
combined company will be the nation's largest independent payphone provider,
with more than 85,000 installed payphones and pro forma 1997 combined revenues
of over $200 million. The combination of the companies is expected to result in
significant cost savings from lower line and transmission costs, lower field
operating costs through more efficient concentration of payphone routes, and
elimination of redun  dant general and administrative expenses.

Under the terms of the agreement, which has been unanimously approved by the
Boards of Directors of both companies, shareholders of PhoneTel will receive
Davel common stock based upon a value of $3.08 per share of PhoneTel common
stock. The number of Davel shares issued will be based on Davel's average
closing price for the 30 consecutive trading days ending on the second trading
day prior to shareholders' approval of the deal, subject to a cap of 0.13765
Davel shares for each share of PhoneTel stock. The transaction will be accounted
for as a pooling of interests and is expected to be tax free to PhoneTel and
Davel common shareholders.

The transaction, which is expected to close in the fall of 1998, is subject to
the approval of the shareholders of both companies and receipt of required
regulatory approvals. Holders of approximately 28% and 50.6% of the outstanding
PhoneTel stock and Davel stock, respectively, have entered into agreements to
vote in favor of the transaction.

The transaction is subject to certain other conditions, including the redemption
of PhoneTel's 14% PIK Preferred Stock and completion of a cash tender offer for
PhoneTel's 12% Senior Notes due 2006 at a price not exceeding 101% of the $125
million principal amount of the notes, with a minimum of 80% of such principal
amount having been tendered. Satisfaction of these conditions is dependent upon
<PAGE>
 
receipt by Davel of financing, which is expected to be obtained through a
combination of high yield debt and a senior credit facility.

Davel owns a network of approximately 40,000 installed payphones located in 36
states and the District of Columbia. Coupled with PhoneTel's network of
approximately 45,000 payphones in 42 states, the combined company will be more
than twice the size of the next largest independent payphone provider. Robert D.
Hill, President and Chief Executive Officer of Davel commented, "Having recently
entered the final stages of the integration of Communications Central Inc. into
the Davel network, we are very excited about the opportunity to combine our
operations with those of PhoneTel. With over 75% of PhoneTel's payphones in our
existing market areas, we believe that this combination creates an immediate
opportunity to achieve significant cost savings."

Commenting on the merger, Peter Graf, Chairman of the Board and Chief Executive
Officer of PhoneTel, said, "The merger consideration of $3.08 per share
represents a premium of 64% over PhoneTel's closing price yesterday of $1.875
per share. This is a great opportunity to create value for PhoneTel's
shareholders." Mr. Graf further noted that the combination of PhoneTel with
Davel and CCI provides PhoneTel shareholders a unique opportunity to participate
in an independent payphone provider that will have the financial strength and
market presence to be a strong competitor in a rapidly changing business
environment.

Davel also announced today that, pursuant to the previously announced agreement
with Equity Group Investments, Inc. ("EGI") in which an affiliate of EGI will
invest $28 million in the Company as payment for 1,000,000 shares of newly
issued common stock and warrants to purchase an additional 218,750 shares, Sam
Zell and F. Philip Handy will join Davel's Board of Directors. Pursuant to the
merger agreement, Peter Graf, will serve on the combined company's Board for a
period of one year.

The companies will be combined under a newly formed holding company to be called
Davel Communications, Inc. and will be headquartered in Tampa, Florida. David R.
Hill, Robert D. Hill and Michael E. Hayes, each of whom is an executive officer
of Davel, will continue to serve as the Chairman of the Board, Chief Executive
Officer and Chief Financial Officer, respectively, of Davel Communications.

Mr. Hill concluded, "This combination will provide us with significant strategic
advantages. When you add the payphone networks of PhoneTel and CCI, the

                                       2
<PAGE>
 
management information systems developed for CCI by Perot Systems, Inc. and the
capital resources, portfolio and experience of Sam Zell and his team, we believe
that we have assembled a strong platform for expansion and value-accretive
acquisitions in an industry still characterized by significant fragmentation."

Davel Communications Group, Inc. operates a system of approximately 40,000 pay
telephones in 36 states and the District of Columbia and provides long distance
operator services for its payphones through its digitally-switched long distance
network.

PhoneTel Technologies, Inc. operates a system of approximately 45,000 payphones
in 42 states and the District of Columbia.

Forward-Looking Statements

Certain of the statements contained herein may be, within the meaning of Section
27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act
of 1934, forward-looking statements (rather than historical facts) that are
subject to risks and uncertainties that could cause actual results to differ
materially from those described in the forward-looking statements. Such forward-
looking statements involve known and unknown risks, uncertainties and other
factors which may cause the actual results, performance or achievements of Davel
Communications Group, Inc. to be materially different from any future results,
performance or achievements expressed or implied by such forward-looking
statements.  Information on significant potential risks and uncertainties is set
forth more fully in the Company's Annual Report on Form 10-K for the year ended
December 31, 1997 and the Quarterly Report on Form 10-Q for the first quarter of
1998.

To receive further information about Davel Communications Group, Inc., via fax
at no charge, dial 1-800-PRO-INFO and enter code DAVL.

CONTACT: Michael Hayes of Davel Communications Group, Inc., 217-243-4391; or
General Information, Alison Ziegler, Analyst Information, Jordon Darrow, or
Media Contact, Alicia Nieva-Woodgate, 212-661-8030, all of The Financial
Relations Board/ 08:37 EDT

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