<PAGE>

                                                                    EXHIBIT 10.9
 
                           STOCK PURCHASE AGREEMENT


     THIS STOCK PURCHASE AGREEMENT ("Agreement") dated December 20, 1996 is by
and among the following:

          a)   SKYLINK TELECOMMUNICATIONS CORPORATION, a Nevada Corporation
     herein referred to as the "Buyer"; and

          b)   COMTEL COMPUTER CORP., a Nevada corporation, and CALIFORNIA
     COMTEL COMPUTER, INC., a California Corporation, both of which may be
     hereinafter collectively referred to herein as the "Company" or
     "Companies";

          c)   Davel Communications Group, Inc. (Selling Shareholder) who is
     referred to herein as the "Seller" or "Selling Shareholder" and who is
     represented by Theodore C. Rammelkamp, Jr. as agent, who is referred to
     herein as the "Seller's Agent" with reference to the following
     circumstances:

     WHEREAS The Company operates and has under contract phones in hotels and
other similar operations for which it provides VoicePro, PBX equipment and
Operator Services, hereafter referred to as "Hospitality" services;

     WHEREAS the Buyer desires to purchase all of Selling Shareholder's interest
in the Company;

     WHEREAS the Selling Shareholder owns 100% of the issued and outstanding
shares of COMTEL COMPUTER, CORP., consisting of 20,948,529.54 shares, and 100%
of the issued and outstanding shares of CALIFORNIA COMTEL COMPUTER, INC.,
consisting of 9,350 shares, said shares being all of the issued and outstanding
shares of both corporations. All of said shares are hereafter referred to as the
"Transferred Shares."

     WHEREAS Theodore C. Rammelkamp, Jr. as Seller's Agent, is the authorized
attorney-in-fact for the Selling Shareholder with the power to sign, execute,
acknowledge, deliver, and receive this Stock Purchase Agreement and such
contracts, agreements, options, covenants, deeds, conveyances, bills of sale,
leases, assignments, insurance policies, checks, stock certificates, proxies,
warrants, commercial paper, and such other instruments of whatever kind and
nature as may be necessary or proper for the completion of this transaction.
Attached hereto at Exhibit A is a Power of Attorney evidencing such authority;
and

     NOW, THEREFORE, in consideration of the premises and of the mutual
agreements, provisions and covenants herein contained, the parties hereto agree
as follows:

          Purchase and Sale of Stock. Subject to the terms and conditions herein
     set forth, on the Closing Date (as hereinafter defined), Buyer agrees to
     purchase from Seller 9,350 shares in
<PAGE>
 
     California ComTel Computer, Inc. for the sum of $1,000.00 and
     20,948,529.54 shares in ComTel Computer Corp. for $5,003,000 adjusted for
     certain pre-agreement items ("Pre-Agreement Items") set forth at Schedule 1
     all payable and more fully described as follows:

          Seller has previously entered into an escrow agreement dated April 25,
     1996 at Farmers State Bank and Trust Company whereby Buyer has paid into
     escrow certain sums as a good faith deposit for the performance of the
     transaction contemplated by this Agreement. Upon Closing, all of said funds
     in escrow shall be released by Letter of Direction to Buyer; and

          The sum of $2,703,000 as adjusted for the Pre-Agreement Items, which
     adjusted sum is referred to herein as the "First Escrow Deposit," by
     deposit with the Escrow Agent (as hereafter defined) in available funds on
     or before December 31, 1996; and

          The additional sum of $2,300,000 by deposit with the Escrow Agent in
     available funds no later than the earlier of December 31, 1997 or within
     ten days of closing and receipt of funds from the underwriter of an Initial
     Public Issue of stock by Buyer. This additional sum shall be subject to
     adjustment as hereafter provided at paragraph 9.1.3 and, as so adjusted,
     shall bear interest at 9.75% per annum, compounded daily, until deposited
     with the Escrow Agent. Said additional sum plus interest and after
     adjustments is referred to herein as the "Second Escrow Deposit." At
     Seller's sole discretion the Second Escrow Deposit may be made in Common
     Stock of Seller valued at the price set for such stock by Seller's
     underwriter on the date of first issuance to the public.

          Security Interest in Assets. At Closing, the Buyer shall cause Comtel
     Computer Corp. to grant Seller a security interest in all equipment of
     Comtel Computer Corp. and all accounts and accounts receivable arising from
     the transmission of telecommunications traffic from customers as of the
     date of Closing (including proceeds and substantially equivalent
     replacements) to secure the payment of the Second Escrow Deposit. Said
     security interest shall not be subordinate to any interests created by
     Buyer at any time or by Comtel Computer Corp. at or after Closing except
     for such purposes related to the financing of the capital expansion or on
     going business operations of Comtel Computer Corp. to which Seller has
     given its written consent for subordination of its interests. Seller shall
     not unreasonably withhold such consent, but in evaluating any request for
     subordination Seller may, in addition to other factors, consider the
     intended use of proceeds, Seller's own obligations to  Boatmen's National
     Bank of St. Louis (or any successor institution) and the impairment of its
     collateral. Without Seller's consent Comtel Computer Corp. may finance
     acquisition of new assets by Purchase Money Security interest in the assets
     acquired. The security interest contemplated by this paragraph 1.3.1 shall
     be granted by Security Agreement substantially as set forth at Schedule
     1.3.1

          Security Interest in the Transferred Shares. This Agreement in its
     entirety shall constitute a Security Agreement or Pledge by Buyer of the
     Transferred Shares to secure the Payment of the Second Escrow Deposit.
<PAGE>
 
          Collateral. Buyer hereby grants to Seller a security interest in the
     Transferred Shares to secure payment of the Second Escrow Deposit.

          Perfection. Pending payment of the Second Escrow Deposit, Seller shall
     transfer the shares to the Escrow Agent, pursuant to an escrow agreement
     ("Escrow Agreement") substantially in the form as set forth at Schedule
     1.3.2.2.

          Sale or Encumbrance. Buyer shall not, without the written consent of
     the Secured Party, sell, contract to sell, assign, lease, encumber or
     dispose of the Transferred Shares or any interest therein until this
     Agreement and all debts secured by it have been fully satisfied.

          Remedies. Upon the failure of Buyer to timely pay the Second Escrow
     Deposit the Seller and Buyer shall within three days after written demand
     for such payment by Seller direct the Escrow Agent to deliver the
     Transferred Shares to Seller as Seller's own property free and clear of all
     encumbrances whether arising out of this Agreement or otherwise.

          Voting Rights in the Transferred Shares. At Closing Seller shall
     deliver to Buyer a proxy to vote the transferred shares substantially in
     the form as set forth at Schedule 1.3.3 which Proxy shall provide that
     Seller shall have all voting rights in respect of the Transferred Shares
     during such periods as Buyer is not in "Material Breach," hereafter
     defined. For the purposes of this paragraph 1.3.3, a "Material Breach"
     shall mean any breach of warranty, or nonfulfillment or failure to perform
     any material obligation on the part of the Buyer under this Agreement, The
     Telecommunications Services Agreement set forth at Schedule 4.1 or The
     Security Agreement set forth at Schedule 1.3.1 which continues without cure
     for more than 30 days after written Notice by Seller referencing this
     paragraph which specifies the breach of warranty, or the nonfulfillment or
     failure to perform a material obligation.

          Delivery of Shares and Payment. Subject to the conditions set forth in
     this Agreement, on or before December 31, 1996, Buyer shall deposit with
     the Escrow Agent, subject to the terms of the Escrow Agreement, the First
     Escrow Deposit. After the Buyer has made the First Escrow Deposit and on or
     before December 31, 1996 Seller shall deliver, subject to the terms of the
     Escrow Agreement, to the Escrow Agent the Transferred Shares and the
     undated, fully executed stock powers authorizing the transfer of shares to
     the Buyer ("Stock Powers"). Further, Seller shall cause to be delivered on
     or before December 31, 1996 forms UCC-3, fully executed and suitable for
     filing which release all security interests of Boatmen's National Bank of
     St. Louis in the assets of the Companies ("Boatmen's Lien Releases"). On
     December 31, 1996 and otherwise in accordance with the terms of the Escrow
     Agreement, the Buyer and Seller shall direct the Escrow Agent to pay to the
     Seller the First Escrow Deposit and transfer to Buyer the Boatmen's Lien
     Releases. When required by paragraph 1.3 Buyer shall deposit the Second
     Escrow Deposit in available funds with the Escrow Agent. At such time and
     otherwise in accordance with the terms of the Escrow Agreement to the Buyer
     and Seller shall direct the Escrow Agent to deliver the Transferred Shares
     and Stock Powers to Buyer and the Second Escrow Deposit to Seller.
<PAGE>

          Closing Date. The closing ("Closing") of the transaction provided in
     this Agreement shall be conducted through escrow as provided above and
     shall take place on December 31, 1996 ("Closing Date") in accordance with
     the terms of this Agreement and the Escrow Agreement.

     Transition Matters and Continuing Relationship.

          Carrier Services. Seller and the Companies currently utilize and share
     a telecommunications network which consists of various elements, including
     but not limited to shared contracts for transmission and billing and
     clearing and state tariffs. Further, the Companies utilize the switching
     equipment and certain services of an Inter-Exchange Carrier which is a
     wholly-owned subsidiary of Seller, Phone Zone, Inc. ("PZI"). For a period
     of one year after the date hereof, Seller and Buyer shall continue to allow
     the use of their contracts for transmission and billing and clearing and
     state tariffs on a common basis. Further, ComTel Computer Corp. and Seller
     shall enter into a telecommunications services agreement
     ("Telecommunications Services Agreement") effective January 1, 1997 whereby
     Seller shall provide the Companies telecommunications services
     substantially as provided as of the date of this Agreement at the existing
     rate structure, subject to adjustment for increases in Seller's costs, for
     such services until January 1, 1998. Said Telecommunications Services
     Agreement shall provide for a security deposit of one month's charges to
     ensure full and timely payment to Seller and its subsidiaries. The
     Telecommunications Services Agreement shall be in the form as set forth at
     Schedule 4.1.

          Access to Records. The parties shall each allow the other reasonable
     access to the books and records of the other as may be required from time
     to time.

          Covenant Not to Compete. For a period of two years from Closing,
     Seller shall not solicit customers of the Companies with whom the Companies
     have a contractual relationship for telecommunications services for the
     provision of similar services and otherwise as set forth in a
     Noncompetition Agreement as set forth at Schedule 4.3.

          Intercompany Transfers. As of an effective date prior to the "Balance
     Sheet Date" (as hereafter defined) Seller shall have eliminated all
     intercompany account balances by way of transfer of intercompany account
     balances. Further, after the Balance Sheet Date and prior to the Closing
     Date, Seller may eliminate subsequently accrued intercompany account
     balances by way of transfer of such account balances, but in no event shall
     it reduce the current assets of the Companies to an amount less than the
     current liabilities of the Companies.

     Representations and Warranties of Seller.

          Title to Shares. Seller represents and warrants that the Selling
     Shareholder has good and marketable title to the Transferred Stock required
     to be transferred pursuant to this Agreement, free and clear of all liens,
     claims, encumbrances, and restrictions of every kind; and the Selling
     Shareholder has the complete and unrestricted right, power, and authority
     to sell, transfer, and assign the Transferred Stock required to be
     transferred pursuant to this Agreement.
<PAGE>
 
          Stock Rights. Seller represents and warrants that as of the Closing
     there shall be no presently outstanding warrants, options, contracts,
     commitments, warranties, agreements, incentive stock option plans, Employee
     Non-Qualified Stock Option Plan or other rights of any character affecting
     or relating in any manner to the issuance of the Companies' capital stock
     or other securities, or entitling anyone to acquire the capital stock or
     other securities of the Companies (hereinafter collectively referred to as
     "Options") and as of the Closing all Options shall have been terminated or
     assigned to Buyer.

          Organization. Seller represents and warrants that ComTel Computer
     Corp. is a duly organized and validly existing Nevada corporation in good
     standing, with all requisite power and authority to carry on its business
     as currently conducted. Seller represents and warrants that California
     ComTel Computer, Inc. is a duly organized and validly existing California
     corporation in good standing, with all requisite power and authority to
     carry on its business as currently conducted.

          Qualification. Except as set forth at Schedule 5.4, Seller represents
     and warrants that the Companies are duly qualified as foreign corporations
     in good standing in each jurisdiction where the nature of their activities
     or its properties owned or leased makes qualification necessary and in
     which the failure to qualify will have a materially adverse effect. Seller
     hereby agrees to cause Comtel Computer Corp. to become qualified to do
     business in all states set forth at Schedule 5.4 at the sole expense and
     effort of Seller prior to January 31, 1997.

          Tariffs. Except as provided at Schedule 5.5, Seller represents and
     warrants that the Companies are duly tariffed and qualified to conduct
     their telecommunications operations in accordance with the rates charged
     and the services provided under the laws of the United States and the
     regulations promulgated by the Federal Communications Commission and under
     the laws of each state or other jurisdiction in which it operates and the
     applicable regulations of each applicable Public Utility Commission,
     Commerce Commission or similar agency therein. At Schedule 1, Seller has
     credited Buyer with certain sums to compensate Buyer for the expense of the
     Companies in updating the tariffs set forth at Schedule 5.5.

          Capitalization. Seller represents and warrants that ComTel Computer
     Corp. is authorized to issue 30,000,000 shares of common stock, with no par
     value, of which 20,948,529.54 are duly and validly issued and outstanding.
     Seller represents and warrants that California ComTel Computer, Inc. is
     authorized to issue 10,000 shares of common stock, with no par value, of
     which 9,350 shares are duly and validly issued and outstanding;

          Indebtedness. Seller represents and warrants that except for trade
     accounts payable incurred in the ordinary course of business and except as
     set forth at Schedule 5.7 there is no long term or material short term
     indebtedness for borrowed money, bond, note, debenture, mortgage, pledge,
     security agreement, conditional sale agreement, equipment trust agreement,
     letter of credit agreement, loan agreement or contract or commitment of the
     Companies for the borrowing or lending of money (including without
     limitation, loans to or from officers, directors or any members of their
     immediate families), and the Companies are not in any default of any
     provision of such outstanding long term or material short term obligations.
     Seller represents and warrants that it has delivered to Buyer true copies
     of all instruments relating to
<PAGE>
 
     the long term and material short term indebtedness for borrowed money and
     obligations set forth at Schedule 5.7.

          Financial Statements. As set forth at Schedule 5.8 Seller has
     furnished Buyer with Financial Statements for the Companies consisting of a
     Certified Audit for the fiscal year ending December 31, 1995 ("Certified
     Audit") and an unaudited statement for the stub period ending October 31,
     1996. The aforesaid Financial Statements may be referred to herein as the
     "Financial Statements" and October 31, 1996 may be referred to herein as
     the "Balance Sheet Date." Seller represents and warrants that to the best
     of Seller's knowledge the Financial Statements are in accordance with the
     books and records of the Companies, fairly present the financial condition
     of the Companies at such dates and the results of its operations for the
     periods specified, in accordance with generally accepted accounting
     principles applied on a basis consistent with prior accounting periods.

          Fixed Asset List. Attached at Schedule 5.8.1 is a fixed asset list of
     the Companies dated December 16, 1996. Seller warrants that this list is
     accurate and correctly states the assets of the Companies.

          Present Status. Seller represents and warrants that the Companies,
     since the Balance Sheet Date, and except as set forth at Schedule 5.9, have
     not done any of the following:

               Incurred any obligations or liabilities except current
          liabilities in the ordinary course of business;

               Discharged or satisfied any liens or encumbrances, or paid any
          obligations or liabilities, except current balance sheet liabilities
          and current liabilities incurred since the Balance Sheet Date in the
          ordinary course of business;

               Declared or made any shareholder payment or distribution or
          purchased or redeemed any of their securities or agreed to do so;

               Mortgaged, pledged, or subjected to lien, encumbrance, or charge
          any of its assets except for such liens as are created pursuant to the
          Companies' ongoing financing arrangement with Zero Plus Dialing, Inc.
          (ZPDI);

               Canceled any debt or claim;

               Sold or transferred any assets except from inventory in the
          ordinary course of business;

               Suffered any damage, destruction, or loss (whether or not covered
          by insurance) materially affecting its properties, business, or
          prospects;

               Waived any rights of substantial value;

               Amended its Articles of Incorporation or Bylaws;
<PAGE>
 
               Effected any change in the authorized and unissued stock;

               Acquired, redeemed, issued or disposed of any shares of stock of
          any class or description, granted any options, warrants or other
          rights for the issuance thereof;

               Merged, consolidated, liquidated, dissolved, reorganized, sold or
          otherwise disposed of substantially all of their assets;

               Made any loan or advance to any officer, director, employee,
          consultant, representative, salesman or agent of the Companies;

               Changed the accounting methods or practices followed by the
          Companies, or changed the depreciation or amortization policies or
          rates used;

               Made any unlawful payment to governmental or quasi-governmental
          officials, or payments to customers or suppliers for rebating of
          charges;

               Entered into any transaction other than in the ordinary course of
          business.


          Taxes. Except as set forth at Schedule 5.10, Seller represents and
     warrants that the Companies have duly filed all federal, state, and local
     income tax, excise tax, sales tax, use tax, gross receipts tax, franchise
     tax, employment tax, payroll tax, withholding tax, real property tax,
     personal property tax and all other tax returns required to be filed by
     them and have paid all such federal, state, and local taxes required to be
     paid with regard to the periods covered by the returns. As of Closing Date,
     Seller represents and warrants that the Companies are not delinquent in the
     payment of any tax, assessment, or governmental charge; have no tax
     deficiencies proposed or assessed against them; have not executed any
     waiver of the statute of limitations on the assessment or collection of any
     tax; and are not currently under audit by the Internal Revenue Service or
     state tax authorities for any years subject to adjustment. There are not in
     force any extensions of time with respect to the dates on which any tax
     return was or is due to be filed by the Companies or any waivers or
     agreements by the Companies for an extension of time for the assessment or
     payment of any tax. With respect to any such extensions it shall be the
     obligation of Seller to prepare, file and pay any such returns and taxes.
     In the event that after Closing a deficiency is determined in the amount of
     any tax payable by the Companies relating to periods prior to Closing,
     Seller shall be liable for the payment of any deficiency attributable to
     periods prior to Closing determined in the following manner:

               To the extent permitted by applicable law, the parties hereto
          agree to cause state and local tax periods of each of the Companies to
          be closed at the close of business on the Closing Date. In the event
          applicable law does not permit the closing of any such period, the
          allocation of tax liability shall be made in accordance with Section
          5.10.2.
<PAGE>
 
               For the purposes of this Section 5.10 "Code" means the Internal
          Revenue Code of 1986, as amended.

               For the purposes of this Section 5.10 "Post-Closing Tax Period"
          means (i) any taxable period beginning on or after the Closing Date.

               For the purposes of this Section 5.10 "Pre-closing Tax Period"
          means any taxable period commencing on a day before the Closing Date.

          Lawsuits and Proceedings. Seller represents and warrants that to the
     best of Seller's knowledge there are no lawsuits or administrative
     proceedings pending or threatened against the Companies or affecting any of
     their properties or rights, other than those more fully described at
     Schedule 5.11.

          Compliance with Law and Instruments. Seller represents and warrants
     that to the best of Seller's knowledge the business and operation of the
     Companies have been and are being conducted in accordance with all
     applicable laws, rules, and regulations of all authorities, except those
     that do not materially and adversely affect the Companies or its
     properties, assets or businesses; the performance of this Agreement will
     not result in any material breach of, constitute a default under, or result
     in the imposition of any lien or encumbrance on any property of the
     Companies under any agreement or other instrument to which the Companies or
     Seller is a party or by which either is bound or affected, and will not
     materially violate the articles of incorporation or the bylaws of the
     Companies; and the Companies are not, and will not be by virtue of the
     transaction contemplated in this contract, materially in violation of their
     articles of incorporation, their bylaws, or of any indebtedness, mortgage,
     contract, lease, or other agreement.

          Good Title. Seller represents and warrants that except with respect to
     assets held under leases and licenses the Companies have good, absolute,
     and marketable title to all of their properties and assets, subject to no
     mortgage, pledge, lien, charge, security interest, encumbrance, or
     restriction except those revealed on the Financial Statements at Schedule
     5.8 and except for such liens incurred in favor of Billing Information
     Concept, Inc., formerly ZPDI and referred to herein as "ZPDI," pursuant to
     the Companies' ongoing financing arrangements with ZPDI.

          Condition of Tangible Assets. Seller represents and warrants that to
     the best of Seller's knowledge all of the equipment of the Companies is in
     good condition and repair, reasonable wear and tear excepted, and that to
     the best of Seller's knowledge the Companies have not been threatened with
     any action or proceeding under any building or zoning ordinance,
     regulation, or law which has not been withdrawn or which is not being
     contested in good faith.

          Patents and Trademarks. Seller represents and warrants that to the
     best of Seller's knowledge: the Companies own, possess, and have good title
     to all copyrights, trademarks, trademark rights, patents, patent rights,
     and licenses necessary to the conduct of their business; the Companies are
     not materially infringing on or otherwise acting materially adversely to
     the rights of any person under or in respect to any copyrights, trademarks,
     trademark rights, patents, patent rights, or licenses owned by any person
     or persons; there is no claim or pending or threatened action with regard
     to any alleged infringement or related violation; the Companies are not
     obligated to pay any royalties or fees to any licensee or other
<PAGE>
 
     claimant to any patent trademark, trade name, copyright, or other
     intangible asset; and the Companies have the unrestricted right to use all
     trade secrets, customer lists, manufacturing and other processes incident
     to the manufacture, use, or sale of any and all products and services
     currently sold by them.

          Contracts. Seller represents and warrants that except as set forth at
     Schedule 5.16 the Companies have not issued or received any written notice
     of breach or default in respect of contracts, agreements, leases,
     documents, or other commitments to which it is a party or by which it is
     otherwise bound or affected. Further Seller represents and warrants that
     except as set forth at Schedule 5.16 it has no knowledge of any material
     breach or default in respect of any contracts, agreements, leases,
     documents, or other commitments to which it is a party or by which it is
     otherwise bound or affected. Seller represents and warrants that to the
     best of Seller's knowledge except as set forth at Schedule 5.16 the
     Companies are not a party to, or otherwise bound by, any of the following
     kinds of contracts:

               Any written or oral contract not made in the ordinary course of
          business;

               Any employment or consultant contract not terminable at will
          without cost or other liability;

               Any labor union contract, bonus, pension, profit sharing,
          retirement, share purchase, stock option, hospitalization, group
          insurance, or similar employee benefit plan;

               Any real or personal property lease, as lessor or lessee;

               Any advertising or public relations contract;

               Any purchase, supply, or service contract for a price exceeding
          $5,000.00 that is not terminable without cost or expense on less than
          30 days' notice. This paragraph does not apply to any contract with
          hospitality locations for the provision of telecommunications
          services;

               Any deed of trust, mortgage, conditional sales contract, security
          agreement, pledge agreement, trust receipt, or any other agreement or
          arrangement under which any of the assets or properties of the
          Companies are subject to a lien, encumbrance, charge, or other
          restriction;

               Any license agreement, whether as licensee or licensor;

          Compensation of Officers and Others. Seller represents and warrants
     that since the Balance Sheet Date, there has not been any material change
     in any compensation, commission, bonus, or other remuneration payable to
     any officer, director, agent, employee, or consultant of the Companies,
     except for increases in the ordinary course of business consistent with
     prior practice.

          Inventories. Seller represents and warrants that the inventories of
     the Companies that are reflected in the Financial Statements and all
     inventory items that have been acquired since the Balance Sheet Date
     consist of goods of such quality and
<PAGE>
 
     in such quantities as are usable or saleable in the ordinary course of
     their business; and that since the Balance Sheet Date the Companies have
     continued to replenish inventory in a normal and customary manner
     consistent with prior and prudent practice.

          Real Property. Seller represents and warrants that the Companies own
     no fee, reversionary or remainder interests in any real property.

          Real Estate Leased. Schedule 5.20 sets forth a list of all leases,
     subleases or other agreements under which the Company is lessee or lessor
     of any real property. The Company is the holder of the leasehold estates
     purported to be granted by the instruments described on Schedule 5.20,
     except as otherwise stated therein. Except as set forth on Schedule 5.20,
     all such leases, subleases and other agreements are to the best of Seller's
     knowledge (i) in good standing, valid and effective, (ii) grant the
     leasehold estates they purport to grant free and clear of all mortgages,
     liens, claims, charges, security interests, encumbrances or other
     restrictions on the Companies' interests in the leases, subleases and other
     agreements which would materially affect the use for which they are held by
     the Companies (other than any unperfected landlord's lien); to the best of
     Seller's knowledge there is not under any of such instruments any existing
     or claimed default, event of default or event which with notice or lapse of
     time or both would constitute an event of default which would materially
     and adversely affect the assets, properties, business, operations or
     financial condition of the Companies; the Seller has not received notice
     that any structures, improvements, fixtures in real estate leased by or to
     the Companies do not conform to any and all applicable state and local
     laws, zoning and building ordinances and health and safety ordinances; no
     notice from any governmental body has been served upon the Company claiming
     any violation of any such law or ordinance, or requiring any substantial
     work, repairs, construction, alterations or installation on or in
     connection with such real estate, which has not been complied with or is
     not being contested in good faith.

          Software. Seller represents and warrants that the Companies have
     developed certain proprietary computer software programs relating to the
     Hospitality segment and to Seller's knowledge the Companies have the sole
     and exclusive ownership of such proprietary programs and no proceeding is
     pending or threatened in regard to the ownership or the Companies' rights
     in said programs.

          Banking Relationships. The Seller represents and warrants that
     Schedule 5.22 sets forth (i) the name of each bank, trust company and stock
     or other broker with which the Companies have an account, credit line or
     safe deposit box or vault, or otherwise maintain relations, (ii) the names
     of all persons authorized to draw thereon or to have access to any safe
     deposit box or vault, (iii) the purpose of each such account, safe deposit
     box or vault, and (iv) the names of all persons authorized by proxies,
     powers of attorney or other like instrument to act on behalf of the
     Companies in matters concerning any of its business or affairs. No such
     proxies, powers of attorney or other like instruments are irrevocable.

          Records. Seller represents and warrants that the respective books of
     account and minute books of the Companies are complete and correct and
     reflect all those transactions involving the Companies' business that
     properly should have been set forth in those books.
<PAGE>
 
          Accounts Receivable. Seller represents and warrants that all of the
     accounts receivable of the Companies reflected in the Financial Statements
     and all of the accounts receivable that have arisen since the Balance Sheet
     Date (except accounts receivable that have been collected since the Balance
     Sheet Date) have arisen in the ordinary course of business for goods or
     services delivered or rendered.

          Accounts Payable. Seller represents and warrants that all of the
     accounts payable of the Companies reflected in the Financial Statements and
     all of the accounts payable that have arisen since the Balance Sheet Date
     (except accounts payable that have been paid since the Balance Sheet Date)
     have arisen in the ordinary course of business for goods or services
     delivered or rendered.

          Seller further represents and warrants that at Closing the account
     payable to MCI as determined by invoice from MCI dated November 15, 1996
     shall be paid through the last monthly invoice received on or before
     Closing.

          Purchase Commitments. Seller represents and warrants that to the best
     of Seller's knowledge and except as set forth in Schedule 5.26, all
     purchase commitments of the Companies arose in the ordinary course of
     business.

          Insurance Policies. Set forth at Schedule 5.27 are all of the
     Insurance Policies of the Companies which policies shall be in full force
     and effect as of the Closing date but all of which lapse by their terms at
     midnight on the Closing Date.

          Expenses and Brokers Commissions. Seller represents and warrants that
     it knows of no commission, finder fee or other renumeration due to any
     finder, broker, or the like employed by it in connection with this
     Agreement.

          Accurate Disclosure. The Seller represents and warrants that this
     Agreement, including the Schedules annexed hereto, does not contain any
     untrue statement of material fact.


     Representations and Warranties of Buyer.

          Authorization. This Agreement has been duly authorized, executed and
     delivered by the Buyer, and the Buyer has full power and authority to
     execute and deliver this Agreement and to consummate the transactions
     contemplated hereby and Buyer shall evidence this authority in form
     reasonably satisfactory to Seller prior to Closing.

          Organization. The Buyer is a corporation duly organized, validly
     existing and in good standing under the laws of the State of Nevada and has
     full power and authority to own, lease and operate its properties and to
     carry on its businesses as now being conducted. At or prior to Closing
     Buyer shall deliver to Seller a Certificate of Good Standing evidencing
     Buyer's good standing in the state of Nevada.
<PAGE>
 
          Compliance with Laws and Instruments. Neither the execution and
     delivery of this Agreement by Buyer nor the consummation of the
     contemplated transactions will (i) violate any provisions of the Articles
     of Incorporation or Bylaws of the Buyer; (ii) violate, conflict with or
     result in the breach or termination of or constitute a default under the
     terms of, any mortgage, lease, bond, indenture, agreement, franchise or
     other instrument or obligation to which the Buyer is a party or by which
     the Buyer may be bound or by which any of the Buyer's properties or assets
     may be bound.

          Consent. No consent of any other party and no consent, license,
     approval or authorization of, or exemption by, or registration or
     declaration with, any governmental authority, bureau or agency not
     previously obtained, is required in connection with the execution,
     delivery, validity or enforceability of this Agreement with respect to the
     Buyer.

          No Extraordinary Transactions. The Buyer shall not cause the Companies
     to engage on the Closing Date in any transaction outside the ordinary
     course of business, other than the transactions described herein.

          Taxes. Buyer shall promptly refund to Seller any refund of taxes
     attributable to any period prior to Closing whether said refund is made by
     way of direct payment or credit.

          Access. Buyer shall cause ComTel Computer, Corp. to provide to Seller
     reasonable access to its books and records as may be required by Seller for
     preparation of tax returns, tax audits, compliance with the terms of this
     Agreement and other similar and reasonable purposes.

          Expenses and Brokers Commissions. Buyer represents and warrants that
     it knows of no commission, finder fee or other renumeration due to any
     finder, broker, or the like employed by it in connection with this
     Agreement.

     Conditions to Buyer's Performance. The obligations of the Buyer at and
prior to Closing are subject to the satisfaction or waiver, in writing, at or
prior to Closing of each of the following conditions:

          Representations and Warranties. All representations and warranties of
     Seller and the Companies contained in this Agreement shall be true and
     correct in all material respects as of the Closing Date as if such
     representations and warranties were made as of the Closing Date; Seller and
     the Companies shall have performed all agreements and covenants required by
     this Agreement to be performed by them prior to or at the Closing Date; and
     there shall have been no material adverse change in the financial
     condition, results of operations, business, properties or assets of the
     Companies. On the Closing Date, there shall be delivered to the Buyer a
     certificate of the Seller and the Companies, dated the Closing Date, to the
     foregoing effect substantially in the form as set forth at Schedule 7.1.

          Court Orders. On the Closing Date, there shall be no effective
     injunction, writ, preliminary restraining order or any order of any nature
     issued by a court or governmental body or authority, directing that the
     transactions provided for herein or any of them not be consummated as
     herein provided.
<PAGE>
 
          Schedules and Exhibits. On and prior to the date of Closing, the
     Seller and Companies shall have furnished all Exhibits and Schedules to the
     Buyer required to be furnished by Seller and Companies.

          Opinion of Counsel. The Buyer shall have received the opinion of the
     General Counsel of the Seller, dated as of the Closing Date, addressed to
     the Buyer and in form and substance satisfactory to the Buyer to the effect
     that:

               The Companies are corporations duly organized, validly existing
          and in good standing under the laws of the States of Nevada and
          California, respectively, and have the corporate power to own their
          property and conduct their business as now being conducted. Seller
          shall deliver to Buyer a Certificate of Good Standing evidencing
          Seller's good standing in the State of Illinois at or prior to
          Closing;

               Upon completion of the purchase of the Shares pursuant to this
          Agreement, Buyer will acquire the Shares free and clear of any liens,
          encumbrances or adverse claims;

               This Agreement has been duly executed and delivered on behalf of
          the Seller and the Companies, and constitutes a legal, valid and
          binding obligation of each of the Selling Shareholders and the
          Companies, enforceable in accordance with its terms (except as
          enforceability may be limited by applicable bankruptcy, insolvency,
          moratorium, or similar laws from time to time in effect which affect
          creditors' rights generally, and by legal and equitable limitations on
          the enforceability of specific remedies). At or prior to Closing
          Seller shall deliver to Buyer a Secretary's Certificate evidencing
          Seller's authority for this transaction;

               Counsel has no knowledge of any actions, suits or proceedings
          pending or threatened against or affecting the Company in any court or
          before any arbitrator of any kind or before or by any governmental
          body except as disclosed and provided for at Schedule 5.11;

               In rendering such opinion, counsel may rely as to factual matters
          on certificates of officers, directors or shareholders of the Company
          and on certificates of governmental officers.

          Resignations. The Seller shall provide the Buyer the written
     resignations, effective as of the Closing Date, of all of the Officers and
     Directors of the Companies.

     Conditions to Seller's and Companies' Performance. The obligations of the
Seller at Closing are subject to the satisfaction or waiver, in writing, at or
prior to Closing of each of the following conditions:

          Representations and Warranties. All representations and warranties of
     Buyer contained in this Agreement shall be true and correct in all material
     respects as of the Closing Date as if such representations and warranties
     were made at and as of the Closing Date by the terms of this Agreement;
     Buyer shall have performed all agreements and covenants required by this
     Agreement to be performed by it prior to or at the Closing; and on the
     Closing Date there shall have been delivered to the Seller a certificate of
     the Buyer, dated the Closing Date, to the foregoing effect substantially in
     the form as set forth at Schedule 8.1.
<PAGE>
 
          Court Orders. On the Closing Date there shall be no effective
     injunction, writ, preliminary restraining order or any order of any nature
     issued by a court or governmental body or authority directing that the
     transactions provided for herein or any of them not be consummated as
     herein provided.

          Opinion of Counsel. The Seller shall have received the opinion of
     Tollefsen & Company P.C., counsel to the Buyer, dated the Closing Date,
     addressed to the Seller and in form and substance satisfactory to the
     Seller, to the effect that:

               Buyer is a corporation duly organized, validly existing and in
          good standing under the laws of the State of Nevada and has the
          corporate power to own its property and conduct its business as now
          being conducted;

               This Agreement has been duly authorized, executed and delivered
          on behalf of Buyer, and constitutes a legal, valid and binding
          obligation of Buyer, enforceable in accordance with its terms (except
          as enforceability may be limited by applicable bankruptcy, insolvency,
          moratorium, or similar laws from time to time in effect which affect
          creditors rights generally, and by legal and equitable limitations on
          the enforceability of specific remedies);

               The execution and delivery of this Agreement and the Ancillary
          Agreements and the consummation of the transactions contemplated
          hereby, will not violate the Articles of Incorporation or Bylaws of
          the Buyer or any law, regulation, judgment, order, injunction, decree
          or award known to such counsel to be applicable to Buyer of any court,
          arbitrator or governmental body;

               No consent of any party and no consent, license, approval or
          authorization of, or exemption by, or registration or declaration
          with, any governmental authority, bureau or agency not previously
          obtained and in effect on the Closing Date is required in connection
          with the execution, delivery, validity or enforceability of this
          Agreement or the consummation of the transactions contemplated hereby.

               In rendering such opinion, counsel may rely as to factual matters
          on certificates of officers or directors of the Buyer and on
          certificate of government officers.

          Schedules and Exhibits. On and prior to the date of Closing, the Buyer
     shall have furnished all Exhibits and Schedules to the Seller required to
     be furnished by Buyer.

     Indemnification.

          Terms of Indemnification. Seller shall indemnify the Buyer against any
     and all damages, claims, loss, expenses (including, but not limited to,
     reasonable attorneys' fees and disbursements) and liabilities resulting
     from any misrepresentation, breach of warranty, or nonfulfillment or
     failure to perform any material obligation on the part of the Seller under
     this Agreement (collectively referred to hereinafter as the "Indemnified
     Liabilities"). The Buyer agrees to indemnify the Seller against any and all
     damages, claims, loss, expenses (including, but not limited to, reasonable
     attorneys' fees and disbursements) and liabilities resulting from any
     misrepresentation, breach of warranty, or nonfulfillment or failure to
     perform any covenant or agreement on the part of the Buyer under this
     Agreement. The party claiming indemnification hereunder is hereinafter
     referred to as the "Indemnified
<PAGE>
 
     Party" and the party against whom such claims are asserted hereunder is
     hereinafter referred to as the "Indemnifying Party".

          Limits on Indemnification. No claim may be made against Seller for
     indemnification under this Agreement unless and then only to the extent the
     aggregate of all Indemnified Liabilities incurred by Buyer exceed $50,000.
     This limitation shall not apply to any claim made pursuant to the breach of
     any warranty or representation made at paragraphs 5.25.1 and 5.10. In no
     event shall Seller's total liability for all claims asserted under this
     Agreement exceed the sum of the payments actually received by Seller.

          Adjustment of Liability. Any payment to be made by Seller to Buyer
     pursuant to paragraph 9 hereof shall be reduced by any tax benefit accruing
     to the Indemnified Party on account of any such indemnification payment and
     by the amounts actually recovered by the Indemnified Party from its
     insurance carriers, and any amount recovered by the Indemnified Party
     subsequent to the payment by the Indemnifying Party hereunder with respect
     to the same claim shall be remitted to the Indemnifying Party, except that
     such remittance shall not exceed the amount of the indemnification payment
     made by the Indemnifying Party. Buyer agrees after the Closing to maintain
     insurance coverage currently maintained by Seller to the extent that such
     policies provide coverage for Indemnified Liabilities.

          Timing of Payment. Payment of any claim for indemnification by Buyer
     or Seller which is finally determined by judgement, agreement or otherwise
     prior to the payment of the Second Escrow Deposit shall be an adjustment to
     the Second Escrow Deposit. Any claim not finally determined by judgement,
     agreement or otherwise by such date shall not be an adjustment to the
     Second Escrow Deposit and shall not be cause to delay or withhold such
     payment.

          Method of Asserting Claims. All claims for indemnification by any
     Indemnified Party shall be asserted and resolved as follows:

               In the event that any claims or demand for which an Indemnifying
          Party would be liable to an Indemnified Party under this Agreement is
          asserted against or sought to be collected from such Indemnified Party
          by a third party, the Indemnified Party shall promptly notify in
          writing the Indemnifying Party of such claim or demand, specifying the
          nature of and specific basis for such claim or demand and the amount
          or the estimated amount thereof to the extent then feasible (which
          estimate shall not be conclusive of the final amount of such claim and
          demand (the "Claim Notice"). The Indemnifying Party shall not be
          obligated to indemnify the Indemnified Party with respect to any such
          claim or demand if the Indemnified Party fails to notify the
          Indemnifying Party thereof in accordance with the provisions of this
          Agreement in reasonably sufficient time so that the Indemnifying
          Party's ability to defend against the claim or demand is not
          prejudiced. The Indemnifying Party shall have thirty (30) days from
          the personal delivery or mailing of the Claim Notice (the "Notice
          Period") to notify the Indemnified Party (i) whether or not the
          Indemnifying Party disputes its liability to the Indemnified Party
          hereunder with respect to such claim or demand and (ii) whether or not
          the Indemnifying Party desires, at its sole cost and expense, to
          defend the Indemnified Party against such claim or demand. In the
          event that the Indemnifying Party notified the Indemnified Party
          within the Notice Period that it
<PAGE>
 
          desires to defend the Indemnified Party against such claim or demand
          and except as hereinafter provided, the Indemnifying Party shall have
          the right to defend by all appropriate proceedings, and control the
          settlement of any such claim or proceeding which proceedings shall be
          settled or prosecuted by him to a final conclusion. If the Indemnified
          Party desires to participate in, but not control, any such defense or
          settlement it may do so at its sole cost and expense. If requested by
          the Indemnifying Party, the Indemnified Party agrees to cooperate with
          the Indemnifying Party and its counsel in contesting any claim or
          demand which the Indemnifying Party elects to contest, including,
          without limitation, by executing or causing to have executed any power
          of attorney authorizing the Indemnifying Party to act on behalf of the
          Indemnified Party or the Companies, or, if appropriate and related to
          the claim in question, in making any counterclaim against the person
          asserting the third-party claim or demand, or any cross-complaint
          against any person. No claim may be settled without the consent of the
          Indemnifying Party.

               Seller and Buyer (i) agree that any suit, action or other legal
          proceeding arising out of this Agreement may be brought only in the
          United States District Court for Illinois, and (ii) consent to the
          jurisdiction of any such court in any such suit, action or
          proceedings; and thus waive any objection which such party may have to
          the laying of venue of any such suit, action or proceedings in any
          such court.

               Seller and Buyer agree that this Agreement shall be construed in
          accordance with, and governed by, the laws of the State of Illinois.

          Survival of Representations, Warranties and Indemnification. The
     representations and warranties of Seller and all other obligations of
     Seller hereunder, shall survive the Closing and, except for breach of the
     representations and warranties set forth at paragraph 5.1, shall expire on
     the first anniversary of the Closing Date, and thereafter, except as
     provided in the next succeeding sentence, no claim may be brought by the
     Buyer arising under or in connection with this Agreement or any of the
     transactions contemplated hereby, except for a breach by the Seller of its
     obligations under paragraph 5.1. If written notice of a claim has been
     given by the Buyer prior to the first anniversary of the Closing Date, then
     the relevant representation, warranty or other obligation shall survive as
     to such claim until the claim has been finally resolved. Notwithstanding
     the foregoing and except for the representation and warranties made in
     Section 5.10, in the event that, prior to the Closing, the Buyer has
     knowledge that any representation or warranty made by the Seller is
     incorrect as of the date hereof or will be incorrect as of the Closing, the
     Buyer shall have as its sole remedy hereunder the option (i) if such
     misrepresentation or breach of warranty is material, to terminate this
     Agreement (on ten business days' notice during which period the other party
     may cure such representation or breach of warranty) or (ii) to proceed with
     the Closing and, upon the Closing, such party shall be conclusively deemed
     to have waived all such claims hereunder relating to such misrepresentation
     or breach of warranty.

          Exclusive Remedy. From and after the Closing, Seller shall not be
     liable or responsible in any manner whatsoever to Buyer, whether for
     indemnification or otherwise, except as expressly provided in this Section
     9, which provides the exclusive remedy and cause of action of the Buyer
     with respect to any matter arising out of or in connection with this
     Agreement or the transactions contemplated hereby.

     Miscellaneous.
<PAGE>
 
           Delivery of Documents. Following the Closing, the Seller and the
      Buyer each shall execute and deliver such documents, provide information
      and take such other action, as shall be reasonably requested by the other
      party hereto to carry out the transactions contemplated by this Agreement.

           Notices. All notices or other communications required or permitted by
      this Agreement shall be sufficiently given and deemed delivered when
      posted if in writing and mailed by registered or certified mail, return
      receipt requested, as follows:

           If to the Seller, to:

                Davel Communications Group, Inc.
                1429 Massaro Drive
                Tampa, FL 33619
                Attn: Mr. David Hill
                     
           With a copy to:
                                                                               
                Davel Communications Group, Inc.
                601 W. Morgan Street
                Jacksonville, IL 62650
                Attn: Theodore C. Rammelkamp, Jr.

           If to the Buyer, to:

                Comtel Computer Corp.
                6272 West 91st Ave.
                Westminster, CO  80030
                Attn: Larry Trudell
                                                                               
           With a copy to:

                Tollefsen & Company, P.C.
                2825 Colby Avenue
                Suite 205
                Everett,  WA  98201
                Attn: Robert Kaye

      or to such other addresses as the parties may from time to time designate
      in accordance with the procedure for Notice provided by this paragraph.


           Assignment. This Agreement shall not be assigned by the Seller except
      that it may be assigned by operation of law by Seller.  Buyer may assign
      this Agreement, without the consent of the Seller, to any corporation
      controlling, controlled by or under common control with Buyer.

           Amendment and Waiver. This Agreement shall not be amended, except
      pursuant to an instrument executed by all of the parties hereto.  Any
      term or provision of this Agreement 
<PAGE>
 
      may be waived pursuant to an instrument executed by the party entitled to
      the benefit thereof.

           Expenses. Each of the parties to this Agreement shall bear its own
      expenses incurred in connection with the negotiation, preparation and
      execution of this Agreement and the consummation of the transactions
      contemplated hereby.

           Severability. If any provision of this Agreement, or the application
      of any such provision to any person or circumstance, shall be held invalid
      by a court of competent jurisdiction, the remainder of this Agreement, or
      the application of such provision to persons or circumstances other than
      those as to which it is held invalid, shall not be affected thereby.

           Counterparts. This Agreement may be executed in any number of
      counterparts, each of which shall be deemed an original, but all of which
      together shall constitute a single instrument.

           Entire Agreement. This Agreement sets forth the entire understanding
      and agreement between the parties as to the matters covered herein and
      supersedes any prior understanding, agreement or statement written or oral
      of intent. No provision of this Agreement shall be construed to confer any
      rights or remedies of any person other than the Seller or the Buyer.

           Survival of Representations. The representations, warranties,
      agreements and covenants given or made by the Seller and Buyer under this
      Agreement shall, subject to the provisions of Section 11, survive the
      Closing and any audit or investigation made by or on behalf of the
      parties.

          (S)338 Election. The Buyer covenants that it will not make any
      election under (S)338 of the Internal Revenue code (or any similar
      provision under State or local law) with respect to this transaction.

          Headings. The headings contained in this Agreement are for reference
      purposes only and shall not affect in any way the meaning or
      interpretation of this Agreement.

          Time. Time is of the essence with respect to this Agreement.

      IN WITNESS WHEREOF, this Agreement has been executed and delivered as of
      the date first written above.

      BUYER:

      SKYLINK TELECOOMUNICATIONS CORPORATION


      ______________________________________
      Terrance J. Trapp, President

      THE COMPANIES
<PAGE>
 
COMTEL COMPUTER CORP.                    CALIFORNIA COMTEL COMPUTER, INC.

___________________________              ________________________________
Theodore C. Rammelkamp, Jr.              Theodore C. Rammelkamp, Jr.
Senior Vice President                    Senior Vice President

SELLING SHAREHOLDER

DAVEL COMMUNICATIONS GROUP, INC

 
_______________________________
Theodore C. Rammelkamp, Jr.
Senior Vice President