Document:

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                                                                    Exhibit 10.6
                              FORM OF TYCOM LTD.

                            LONG TERM INCENTIVE PLAN

SECTION 1.

     The purposes of this TyCom Ltd. Long Term Incentive Plan (the "Plan") are
to promote the interests of TyCom Ltd. (together with any successor thereto, the
"Company") and its shareholders by (i) attracting and retaining employees,
directors and officers of the Company and its Affiliates, (ii) motivating such
employees, directors and officers by means of performance-related incentives to
achieve longer-range performance goals, and (iii) enabling such employees,
directors and officers to participate in the long-term growth and financial
success of the Company.

SECTION 2.    Definitions

     As used in the Plan, the following terms shall have the meanings set forth
below:

     "Affiliate" shall mean a Parent and any corporation or other entity in
which the Company possesses a direct or indirect ownership interest.

     "Agreement" shall mean any written agreement, contract or other instrument
or document evidencing any Award, which may, unless otherwise specified therein,
but need not, be executed or acknowledged by a Participant.

     "Award" shall mean any Option, Stock Appreciation Right, Performance Award,
Dividend Equivalent, Restricted Stock Award or Other Stock-Based Award.

     "Board" shall mean the Board of Directors of the Company.

     "Code" shall mean the U.S. Internal Revenue Code of 1986, as amended.

     "Committee" shall mean a committee of the Board designated by the Board to
administer the Plan.

     "Companies Act" shall mean the Companies Act of 1981 of Bermuda (as
amended).

     "Dividend Equivalent" shall mean any right granted under Section 6(d) of
the Plan.

     "Director" shall mean a member of the Board.

     "Employee" shall mean any employee of the Company or of any Subsidiary, as
determined by the Committee.
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     "Exchange Act" shall mean the U.S. Securities Exchange Act of 1934, as
amended.

     "Fair Market Value" shall mean the fair market value of Shares or other
property determined by such methods or procedures as shall be established from
time to time by the Committee.

     "Good Reason" shall mean, without an Employee's express written consent,
the occurrence of any one or more of the following:

       (a) The assignment to Employee of duties inconsistent with Employee's
     authorities, duties, responsibilities and status as on officer of the
     Company, or a reduction or alteration in the nature or status of Employee's
     authorities, duties or responsibilities, from those in effect as of the
     Reference Date; other than an insubstantial and inadvertent act that is
     remedied by the Company promptly after receipt of notice thereof given by
     Employee;

       (b) The Company's requiring Employee to be based at a location in excess
     of 50 miles from Employee's principal job location or office immediately
     prior to the Reference Date; except for required travel on the Company's
     business to an extent consistent with Employee's business travel
     obligations immediately prior to the Reference Date;

       (c) A reduction by the Company of Employee's base salary as in effect on
     the Reference Date (other than pursuant to a reduction by a uniform
     percentage of the salary of all full-time domestic employees of the Company
     who are not subject to a collective bargaining agreement); or a reduction
     in Employee's short-term or long-term incentive compensation opportunities
     under the executive incentive compensation plans of the Company for which
     Employee is eligible as in effect on the Reference Date;

       (d) The failure by the Company to keep in effect compensation,
     retirement, health and welfare benefits, or perquisite programs under which
     Employee receives benefits substantially similar, in the aggregate, to the
     benefits under such programs as exist immediately prior to the Reference
     Date (other than pursuant to an equivalent reduction in such benefits of
     all full-time domestic employees of the Company who are not subject to a
     collective bargaining agreement); or the failure of the Company to meet the
     funding requirements, if any, of any of such programs; or

       (e) Any material breach by the Company of its obligations under any
     agreement with Employee or any failure of a successor of the Company to
     assume and agree to perform the Company's entire obligations under any
     agreement with Employee, provided that such successor has received at least
     ten days written notice of such failure from the Company or Employee.

     "Incentive Stock Option" shall mean an option intended to qualify under
Section 422 of the Code.

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     "Misconduct" shall mean an action or actions, that individually or
collectively, are, in the opinion of the Committee, which opinion shall be
conclusive, willfully or wantonly harmful to the Company or a Subsidiary.

     "Non-qualified Stock Option" shall mean an option which is not an Incentive
Stock Option.

     "Option" shall mean an option granted under Section 6(a) of the Plan
(including an Option granted pursuant to Section 6(a)(v)).

     "Offering" shall mean the initial public offering of the Shares of the
Company.

     "Offering Date" shall mean the date on which the Offering is effected.

     "Officer" shall mean an officer of the Company or any of its Subsidiaries.

     "Other Stock-Based Award" shall mean any right granted under Section 6(e)
of the Plan.

     "Parent" shall mean a parent company (wherever incorporated), as defined by
Section 86 of the Companies Act, of the Company.

     "Participant" shall mean any Employee, Director, Tyco Director or Officer
granted an Award under the Plan.

     "Performance Award" shall mean any right granted under Section 6(c) of the
Plan.

     "Person" shall mean any individual, corporation, partnership, association,
joint-stock company, trust, unincorporated organization, government or political
subdivision thereof or other entity.

     "Reference Date" shall mean the later to occur of (i) a Change of Control
and (ii) the date 90 days prior to the termination of Employee's employment.

     "Restricted Period" shall mean the period designated by the Committee
during which Restricted Stock is subject to restrictions on transfer.

     "Restricted Stock" shall mean Shares that are subject to restrictions as
provided in Section 6(e) of the Plan.

     "SEC" shall mean the U.S. Securities and Exchange Commission, or any
successor thereto.

     "Shares" shall mean the common shares of the Company, U.S. $0.25 par value,
and such other securities or property as may become subject to Awards pursuant
to an adjustment made under Section 4(b) of the Plan.

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     "Stock Appreciation Right" shall mean any right granted under Section 6(b)
of the Plan.

     "Subsidiary" shall mean a subsidiary company (wherever incorporated) as
defined by Section 86 of the Companies Act or other business unit, whether or
not incorporated, of the Company.

     "Tyco" shall mean Tyco International Ltd., a company incorporated in
Bermuda.

     "Tyco Director" shall mean a member the board of directors of Tyco, but
such persons will only be eligible for Awards during the period that the Company
is a Subsidiary of Tyco.

SECTION 3.  Administration

     The Plan shall be administered by the Committee.  Subject to the terms of
the Plan and applicable law, and in addition to other express powers and
authorizations conferred on the Committee by the Plan, the Committee shall have
full power and authority to (i) designate Participants; (ii) determine the type
or types of Awards to be granted to an eligible Participant; (iii) determine the
number of Shares to be covered by, or with respect to which payments, rights, or
other matters are to be calculated in connection with, Awards; (iv) determine
the terms and conditions of any Award; (v) determine whether, to what extent,
and under what circumstances Awards may be settled or exercised in cash, Shares,
other securities, other Awards or other property, or canceled, forfeited, or
suspended and the method or methods by which Awards may be settled, exercised,
canceled, forfeited, or suspended, (vi) determine whether, to what extent, and
under what circumstances cash, Shares, other securities, other Awards, other
property and other amounts payable with respect to an Award shall be deferred
either automatically or at the election of the holder thereof or of the
Committee; (vii) interpret and administer the Plan and any instrument or
agreement relating to an Award made under the Plan; (viii) establish, amend,
suspend, or waive such rules and regulations and appoint such agents as it shall
deem appropriate for the proper administration of the Plan.  Unless otherwise
expressly provided in the Plan, all designations, determinations,
interpretations, and other decisions under or with respect to the Plan or any
Award shall be within the sole discretion of the Committee, may be made at any
time and shall be final, conclusive, and binding upon all Persons, including the
Company, any Affiliate, any Participant, any holder or beneficiary of any Award,
any shareholder and any Employee.  Notwithstanding anything in this Section 3 or
elsewhere in the Plan to the contrary, the Board shall also have, and also have
the right to exercise, unless and until a Change of Control has occurred, all
power and authority that the Committee has.

SECTION 4.  Shares Available for Awards

     (a)    Shares Available

     The maximum number of Shares in respect of which Awards may be made under
the Plan shall be            provided, however, that in the event (i) an Award
in respect of Shares is settled for cash or expires or is terminated unexercised
as to any Shares

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covered thereby, (ii) any Award in respect of Shares is cancelled or forfeited
for any reason without the delivery of Shares, (iii) any Option or other Award
granted is exercised through the delivery of Shares, or (iv) tax obligations are
satisfied through the delivery or withholding of Shares, the number of Shares
available for Awards under the Plan shall be increased by the number of Shares
not delivered in connection with any such Award or so surrendered, delivered or
withheld. Subject to the requirements of applicable law, any Shares delivered by
the Company, or any Shares with respect to which Awards are made by the Company,
or any Shares with respect to which the Company becomes obligated to make
Awards, through the assumption of, or in substitution for, outstanding awards
previously granted by an entity of which the Company or a Subsidiary acquires a
significant portion of its equity or from which it acquires a significant part
or all of a business or its assets, shall not be counted against the Shares
available for Awards under the Plan. Subject to the foregoing, Shares may be
made available from the authorized and unissued Shares of the Company or from
Shares reacquired by the Company, including shares purchased in the open market.

     (b)    Adjustments

     In the event that the Committee determines that any dividend or other
distribution (whether in the form of cash, Shares, other securities, or other
property), recapitalization, stock split, reverse stock split, subdivision,
consolidation or reduction of capital, reorganization, merger, scheme of
arrangement, split-up, spin-off or combination involving the Company or
repurchase or exchange of Shares or other rights to purchase Shares or other
securities of the Company, or other similar corporate transaction or event
affects the Shares such that any adjustment is determined by the Committee to be
appropriate in order to prevent dilution or enlargement of the benefits or
potential benefits intended to be made available under the Plan, then the
Committee shall, in such manner as it may deem equitable, adjust any or all of
(i) the number and type of Shares (or other securities or property) with respect
to which Awards may be granted, (ii) the number and type of Shares (or other
securities or property) subject to outstanding Awards, and (iii) the grant or
exercise price with respect to any Award or, if deemed appropriate, make
provision for a cash payment to the holder of an outstanding Award; provided
that the number of Shares subject to any Award denominated in Shares shall
always be a whole number.

     (c)    Limitation

     No Participant shall be granted Awards in any fiscal year which exceed 5%
of the aggregate number of Shares with respect to which Awards may be granted
under the Plan.

SECTION 5.  Eligibility

     Any Employee, Director, Officer or Tyco Director shall be eligible to be
designated a Participant.

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SECTION 6.  Awards

     (a)    Options

     The Committee is hereby authorized to grant to eligible Participants an
option to purchase Shares (an "Option") which shall contain the following terms
and conditions and such additional terms and conditions, which are not
inconsistent with the provisions of the Plan, as the Committee shall determine.
The Committee may grant Non-qualified Stock Options to any Participant.
Incentive Stock Options may be granted only to Employees.  Each Agreement shall
designate each Option as an Incentive Stock Option or a Non-qualified Stock
Option and shall contain such terms and conditions as the Committee, in its
discretion exercised in accordance with the terms of the Plan, determines.

     (i)  Exercise Price

     The purchase price per Share under an Option shall be not less than the
Fair Market Value of a Share at the date of the grant.

     (ii)  Time and Method of Exercise

     The Committee shall determine the time or times at which an Option may be
exercised in whole or in part, and the method or methods by which, and the form
or forms (which may include, without limitation, cash, Shares, outstanding
Awards, other securities or other property, or any combination thereof, having a
Fair Market Value on the exercise date equal to the relevant exercise price) in
which, payment of the exercise price with respect thereto may be made or deemed
to have been made.  Notwithstanding Section 6(g)(vii) below, if the payment of
the exercise price is to be made in Shares, such Shares must have been purchased
on the open market by the participant or, if not so purchased, must be held by
the participant for six (6) months.

     (iii)  Term of Option

     Except as otherwise determined by the Committee, Options granted under the
Plan shall expire no later than ten (10) years from the date of grant or such
other date as specified by the Committee and contained in the Agreement.

     (iv)  Incentive Stock Options

     Notwithstanding anything in this Section 6(a) to the contrary, no Incentive
Stock Options shall be granted to any Employee who, at the time the Option is
granted, owns (directly or indirectly within Section 424(d) of the Code) more
than ten percent of the total combined voting power of all class of the shares
of the Company, any subsidiary or parent corporation unless (x) the option price
under such Option is at least 110% of the Fair Market Value of a Share on the
date of grant, and (y) the Option expires no later than the day preceding the
fifth anniversary of the date of grant.

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     (b)    Stock Appreciation Rights

     The Committee is hereby authorized to grant to eligible Participants a
"Stock Appreciation Right", which shall consist of a right to receive the excess
of (i) the Fair Market Value of one Share on the date the right is exercised or,
if the Committee shall so determine, at any time during a specified period
before or after the date of exercise over (ii) the grant price (determined in
the manner set forth below) of the right.  A Stock Appreciation Right may be
granted in tandem with an Option, in addition to an Option, or free standing and
unrelated to an Option.

          (i)  Grant Price

          The grant price of a Stock Appreciation Right shall be not less than
     the Fair Market Value of a Share at the date of the grant, except that a
     Stock Appreciation Right granted in tandem with an Option may have a grant
     price equal to the exercise price of the Option, without regard to whether
     the Stock Appreciation Right and the Option are granted on the same day.

          (ii)  Other Terms and Conditions

          Subject to the terms of the Plan and any applicable Agreement, the
     Committee shall determine, at or after the grant of a Stock Appreciation
     Right, the term, methods of exercise, methods of settlement, and any other
     terms and conditions of any Stock Appreciation Right.  Any such
     determination by the Committee may be changed by the Committee from time to
     time and may govern the exercise of Stock Appreciation Rights granted or
     exercised prior to such determination as well as Stock Appreciation Rights
     granted or exercised thereafter.  The Committee may impose such conditions
     or restrictions on the exercise of any Stock Appreciation Right as it shall
     deem appropriate.

     (c)    Performance Awards

     The Committee is hereby authorized to grant to eligible Participants a
"Performance Award," which shall consist of a right (i) denominated or payable
in cash, Shares, other securities or other property (including without
limitation, restricted securities) and (ii) which shall confer on the holder
thereof rights valued as determined by the Committee and payable to, or
exercisable by, such holder, in whole or in part, upon the achievement of such
performance goals during such performance periods as the Committee shall
establish.  The criteria with respect to which performance goals may be
established include Share prices, market share, sales, earnings, earnings per
share, earnings before income tax, cash flow and return on equity.

          (i)  Terms and Conditions

          Subject to the terms of the Plan and any applicable Agreement, the
     Committee shall determine the performance goals to be achieved during any
     performance period, the length of any performance period, the amount of any

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     Performance Award and the amount of any payment or transfer to be made
     pursuant to any Performance Award.

          (ii)  Payment of Performance Awards

          Performance Awards may be paid in a lump sum or in installments
     following the close of the performance period or, in accordance with
     procedures established by the Committee, on a deferred basis.

     (d)    Dividend Equivalents

     The Committee is hereby authorized to grant to eligible Participants a
"Dividend Equivalent", which shall consist of a right pursuant to which any such
eligible Participant shall be entitled to receive payments equivalent to
dividends with respect to a number of Shares determined by the Committee, and
the Committee may provide that such amounts (if any) shall be deemed to have
been reinvested in additional Shares or otherwise reinvested.  Subject to the
terms of the Plan and any applicable Agreement, such Awards may have such terms
and conditions as the Committee shall determine.

     (e)    Restricted Stock

     The Committee is hereby authorized to grant Restricted Stock, the
restrictions (which will be set out in the Agreement for the Award) on which
shall lapse in accordance with certain time-based and/or performance goals
specified by the Committee, to selected Participants for such reasons and in
such amounts as the Committee in its sole discretion, may determine.  The
criteria with respect to which performance goals may be established include
Share prices, market share, sales, earnings, earnings per share, earnings before
income tax, cash flow and return on equity.  As a condition to any Award of
Restricted Stock, the Committee may require a Participant to pay to the Company
a non-refundable amount equal to, or in excess of, the par value of the shares
of Restricted Stock awarded.  Subject to such rules as the Committee may
prescribe, upon a Participant's termination of employment prior to the end of
the Restricted Period, all shares of Restricted Stock subject to such Restricted
Period shall be forfeited by the Participant and returned to the Company.

          (i)   Restrictions

     During the Restricted Period, a Participant may not transfer any shares of
Restricted Stock except as provided in Section 6(g)(iii) or as otherwise
provided in the Agreement or Award under which the Restricted Stock is granted.
Except as may otherwise be determined by the Committee, the Restricted Period
shall be three (3) years from the date or grant.

          (ii)  No Other Restrictions

     Except as otherwise provided in this Section 6(e) or in an Agreement
pursuant to which Restricted Stock is granted, Participants shall enjoy all
other rights of ownership

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associated with the Restricted Stock, including, without limitation, the right
to vote such Shares and to receive any dividends payable on such Shares.

     (f)    Other Stock-Based Awards

     The Committee is hereby authorized to grant to eligible Participants an
"Other Stock-Based Award", which shall consist of a right (i) which is other
than an Award or right described in Section 6(a), (b), (c), (d) or (e) above and
(ii) which is denominated or payable in, valued in whole or in part by reference
to, or otherwise based on or related to Shares (including, without limitation,
securities convertible into Shares), as are deemed by the Committee to be
consistent with the purposes of the Plan.  Subject to the terms of the Plan and
any applicable Agreement, the Committee shall determine the terms and conditions
of any such Other Stock-Based Award, which conditions may include satisfaction
of performance goals relating to Share prices, market share, sales, earnings,
earnings per share, earnings before income tax, cash flow and return on equity.

     (g)  General

          (i) Awards May be Granted Separately or Together

          Awards may, in the discretion of the Committee, be granted either
     alone or in addition to, in tandem with, or in substitution for any other
     Award granted under the Plan or any award granted under any other plan of
     the Company or any Subsidiary.  Awards granted in addition to or in tandem
     with other Awards or awards granted under any other plan of the Company or
     any Subsidiary may be granted either at the same time as or at a different
     time from the grant of such other Awards or awards.

          (ii) Forms of Payment by Company Under Awards

          Subject to the terms of the Plan and of any applicable Agreement and
     the requirements of applicable law, payments or transfers to be made by the
     Company or a Subsidiary upon the grant, exercise or payment of an Award may
     be made in such form or forms as the Committee shall determine, including,
     without limitation, cash, Shares, other securities, other Awards or other
     property, or any combination thereof, and may be made in a single payment
     or transfer, in installments, or on a deferred basis, in each case in
     accordance with rules and procedures established by the Committee.  Such
     rules and procedures may include, without limitation, provisions for the
     payment or crediting of reasonable interest on installment or deferred
     payments or the grant or crediting of Dividend Equivalents in respect of
     installment or deferred payments denominated in Shares.

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          (iii)  Limits on Transfer of Awards

          Subject to paragraph (viii) below:

          (A) Each Award, and each right under any Award, shall be exercisable
     only by the Participant during the Participant's lifetime, or, in the event
     of the Participant's incapacity, the Participant's legally appointed
     representative.

          (B) No Award (prior to the time, if applicable, Shares are issued or
     delivered in respect of such Award), and no right under any such Award, may
     be assigned, alienated, pledged, attached, sold or otherwise transferred or
     encumbered by a Participant otherwise than by will or by the laws of
     descent and distribution (or, in the case of restricted securities, to the
     Company) and any such purported assignment, alienation, pledge, attachment,
     sale, transfer or encumbrance shall be void and shall automatically make
     the Award unenforceable for all purposes.

          (iv)  Terms of Awards

          The term of each Award shall be for such period as may be determined
     by the Committee.

          (v)  Share Certificates

          All certificates for Shares or other securities of the Company or any
     Subsidiary delivered under the Plan pursuant to any Award or the exercise
     thereof shall be subject to such stop transfer orders and other
     restrictions as the Committee may deem advisable under the Plan or the
     rules, regulations, and other requirements of the U.S. Securities and
     Exchange Commission, any stock exchange upon which such Shares or other
     securities are then listed, and any applicable laws, and the Committee may
     cause a legend or legends to be put on any such certificates to make
     appropriate reference to such restrictions.  Notwithstanding the foregoing,
     no action shall be taken by the Committee which would, under the laws of
     Bermuda, cause a separate class of securities other than Shares to be
     created and the Committee shall consult with appropriate legal counsel in
     this regard.

          (vi)  Consideration for Grants

          Awards may be granted for no cash consideration, for such nominal cash
     consideration as may be required by applicable law or for such greater
     amount as may be established by the Committee.

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          (vii)  Delivery of Shares or Other Securities and Payment by
     Participant of Consideration

          No Shares or other securities shall be delivered pursuant to any Award
     until payment in full of any amount required to be paid at or prior to such
     delivery pursuant to the Plan or the applicable Agreement is received by
     the Company.  Such payment may be made by such method or methods and in
     such form or forms as the Committee shall determine, including, without
     limitation, cash, Shares, other securities, other Awards or other property,
     or any combination thereof, provided that the combined value, as determined
     by the Committee, of all cash and cash equivalent and the Fair Market Value
     of any such Shares or other property so tendered to the Company, as of the
     date of such tender, is at least equal to the full amount required to be
     paid pursuant to the Plan or the applicable Agreement (and provided that in
     the case of payment in Shares or other Securities of the Company, the
     Committee is satisfied that the relevant requirements of the Companies Act
     have been satisfied).

          (viii)  Committee Discretion to Remove or Amend Restrictions on
     Transferability

          Notwithstanding the provisions of paragraph (iii) above and any other
     restrictions on transferability of Awards referred to in this Plan, the
     Committee may, in its discretion, either generally or specifically,
     prospectively or retroactively, (a) grant Awards without limits on
     transferability thereof or with such limits on transferability as the
     Committee may deem appropriate in the circumstances, and (b) waive, amend,
     alter, suspend, discontinue, cancel or terminate any limits on
     transferability of Awards on such terms as the Committee may deem
     appropriate; provided, however, that any of the acts described in clause
     (b) of this paragraph that would materially impair the rights of any
     Participant, or any holder or any beneficiary of any Award theretofore
     granted, shall not to that extent be effective without the consent of the
     affected Participant, holder or beneficiary.

SECTION 7.    Amendment and Termination

     Except to the extent prohibited by applicable law and unless otherwise
expressly provided in an Agreement or in the Plan:

     (a)    Amendments to the Plan

     The Board may amend, alter, suspend, discontinue, or terminate the Plan
without the consent of any shareholder, Participant, other holder or beneficiary
of an Award, or other Person; provided, however, that, except as provided by
Section 9, any such amendment, alteration, suspension, discontinuation, or
termination that would impair the rights of any Participant, or any other holder
or beneficiary of any Award theretofore granted, shall not to that extent be
effective without the consent of the affected Participant, holder or beneficiary
and provided further that notwithstanding any other

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provision of the Plan or any Agreement, no such amendment, alteration,
suspension, discontinuation, or termination shall be made that would otherwise
cause the Plan to cease to comply with any applicable law or regulatory
requirement with respect to which the Board determines compliance is necessary
or desirable. Notwithstanding the foregoing, the Committee may amend the Plan,
in its sole discretion, for the purpose of causing the Plan to comply with any
applicable law or regulatory requirement. In addition, except for amending the
number of shares available for Awards under Section 4(a)(i) of the Plan, the
Committee may also make other amendments to the Plan; provided, however, that no
such amendment may materially change the underlying policy reflected by the
Plan.

     (b)    Amendments to Awards

     The Committee may waive any conditions or rights under, amend any terms of,
or alter, suspend, discontinue, cancel or terminate, any Award theretofore
granted, prospectively or retroactively, without the consent of any relevant
Participant or holder or beneficiary of an Award; provided that, subject to the
Committee's right to cancel and rescind an Award pursuant to Section 9 and the
Committee's right to adjust Awards pursuant to Section 6(g)(viii) and Section
7(c) and (d), (i) any such waiver, amendment, alteration, suspension,
discontinuance, cancellation or termination that would materially impair the
rights of any Participant, or any holder or beneficiary of any Award theretofore
granted, shall not to that extent be effective without the consent of the
affected Participant, holder or beneficiary; (ii) no such waiver, amendment,
alteration, suspension, discontinuance, cancellation or termination that would
materially increase the rights of any Participant or any holder or beneficiary
of any Award shall be effective unless the Award, after giving effect to such
waiver, amendment, alteration, suspension, discontinuance, cancellation or
termination, could have been granted under the terms of the Plan (without regard
to this Section 7(b)); and (iii) an outstanding option shall not be amended to
reduce its original exercise price other than in connection with a transaction
described in Section 4(b), Section 7(c) or 7(d).

     (c)  Adjustments of Awards Upon Certain Acquisitions

     In the event the Company or any Subsidiary shall assume outstanding
employee awards or the right or obligation to make future employee awards in
connection with the acquisition of another corporation or business entity or
assets of any such corporation or business entity, the Committee may make such
adjustments, not inconsistent with the terms of the Plan, in the terms of Awards
as it shall deem appropriate in order to achieve reasonable comparability, or
other equitable relationship between the assumed awards and the Awards as so
adjusted.

     (d)  Adjustment of Awards Upon the Occurrence of Certain Unusual or
          Nonrecurring Events

     The Committee is hereby authorized to make adjustments in the terms and
conditions of, and the criteria included in, Awards in recognition of unusual or
non-recurring events (including, without limitation, the events described in
Section 4(b)

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hereof) affecting the Company, any Subsidiary, or the financial statements of
the Company or any Subsidiary, or of changes in applicable laws, regulations, or
accounting principles, whenever the Committee determines that such adjustments
are appropriate in order to prevent dilution or enlargement of the benefits or
potential benefits intended to be made available under the Plan, or to be
derived by the Company.

SECTION 8.    Change of Control

     (a)  Except as otherwise determined by the Committee at the time of grant
of an Award, in the event of a Change of Control, each outstanding Award shall
be assumed or an equivalent Award or right shall be substituted by the successor
corporation or a parent or subsidiary of the successor corporation. In the event
that the successor corporation refuses to assume or substitute for the Awards at
the time of the Change of Control, all Awards granted under this Plan will
become fully vested and exercisable. If outstanding Awards are assumed or
substituted upon a Change of Control and the Employee is terminated other than
for Misconduct by the successor corporation or its parent or subsidiary at any
time after a Change of Control, all Awards held by such Employee shall fully
vest and be immediately exercisable as of the date of such termination. All
Awards granted under this Plan shall be fully vested and exercisable upon a
Change of Control for any non-employee Director, any non-employee Tyco Director,
any Employee who is a co-employee of the Company and Tyco, and any Employee not
offered employment by the successor corporation. If Awards become fully vested
and exercisable and the Shares of the Company are no longer traded on a
recognized national or international securities exchange, Participants who hold
outstanding Options and other Awards payable in Shares of the Company will be
entitled to receive a cash payment equal to the amount such Participant would
have received had such Participant exercised and sold the Shares underlying the
applicable Award on the last practicable date prior to the Change of Control.

     (b)  A "Change of Control" shall mean the occurrence of any of the
following events:

          (i) any "person" or "group" (as defined under Sections 13(d) and 14(d)
     of the Securities Exchange Act of 1934 (the "Exchange Act")) is or becomes
     the direct or indirect "beneficial owner" (as defined in Rules 13d-3 and
     13d-5 under the Exchange Act), of securities representing 50% or more of
     the combined voting power of the Company's then outstanding voting
     securities other than in connection with a merger, amalgamation, scheme of
     arrangement or other combination pursuant to which the shareholders of the
     Company immediately prior to such event beneficially own 50% or more of the
     voting rights exercisable generally of any such person which is an entity;

          (ii) such time as the Continuing Directors (as defined below) cease
     for any reason, other than death, incapacity or retirement of a Director,
     to constitute a majority of the Board (or, if applicable, the Board of
     Directors of a successor corporation to the Company), where the term
     "Continuing Director" means at any date a member of the Board who (A) was a
     member of the Board on the

                                       13
<PAGE>

     Offering Date or (B) was nominated or elected subsequent to such date by at
     least a majority of the Directors who were Continuing Directors at the time
     of such nomination or election or whose election to the Board was
     recommended or endorsed by at least a majority of the Directors who were
     Continuing Directors at the time of such nomination or election; provided,
     however, that there shall be excluded from clause (B) any individual whose
     election to the Board occurred at or as a result of a special general
     meeting of the Company requisitioned pursuant to Section 74 of the
     Companies Act or otherwise as a result of action taken by or on behalf of a
     person other than the Board;

          (iii)  any "person" or "group" (other than an employee benefit plan or
     plans maintained by the Company or its Affiliate) comes to possess,
     directly or indirectly, the legal right to direct the management and
     policies of the Company, whether through the ownership of securities, by
     contract or otherwise (other than solely by virtue of membership on the
     Board or any committee thereof); or

          (iv) a merger, amalgamation, scheme of arrangement or other
     combination of the Company with or into another person or any analogous or
     similar transaction or event occurs as a result of which the voting rights
     exercisable at general meetings of the Company in respect of the shares of
     the Company in issue immediately prior to the relevant event no longer
     represent a majority of all the voting rights normally exercisable at
     general meetings of the Company (or, if the Company is acquired by another
     entity in connection with such event, of such entity) in respect of the
     shares of the Company (or, if the Company is acquired by another entity in
     connection with such event, of the securities of such entity) in issue
     immediately after such event;

     provided, however, that the Offering and any subsequent offering or series
of offerings of the Shares of the Company on an established securities market or
exchange or any distribution of Shares by the Parent, whether by dividend, spin-
off or otherwise, shall not be considered a "Change of Control."

SECTION 9.    Cancellation and Recission of Awards

     Unless the Agreement specifies otherwise, the Committee may cancel any
vested, nonvested, unexpired, unpaid, or deferred Awards at any time if the
Participant is not in compliance with all other applicable provisions of the
Agreement, the Plan and with the following conditions:

     (a)  A Participant shall not render services for any organization or engage
directly or indirectly in any business which, in the judgment of the Chairman of
the Board or the chief executive officer of the Company or other senior officer
designated by the Committee, is or becomes competitive with the Company, or
which organization or business, or the rendering of services to such
organization or business, is or becomes otherwise prejudicial to or in conflict
with the interests of the Company. For a Participant whose employment has
terminated, the judgment of the Chairman of the Board or the chief executive
officer shall be based on the Participant's position and

                                       14
<PAGE>

responsibilities while employed by the Company, the Participant's post-
employment responsibilities and position with the other organization or
business, the extent of past, current and potential competition or conflict
between the Company and the other organization or business, the effect on the
Company's customers, suppliers and competitors of the Participant's assuming the
post-employment position, and such other considerations as are deemed relevant
given the applicable facts and circumstances. A Participant who has retired
shall be free, however, to purchase as an investment or otherwise, stock or
other securities of such organization or business so long as they are listed
upon a recognized securities exchange or traded over-the-counter, and such
investment does not represent a substantial investment to the Participant or a
greater than 10 percent equity interest in the organization or business.

     (b)  A Participant shall not, without prior written authorization from the
Company, disclose to anyone outside the Company, or use in other than the
Company's business, any confidential information or material, relating to the
business of the Company, acquired by the Participant either during or after
employment with the Company.

     (c)  For purposes of paragraphs (a) and (b) of this Section 9, the term
Company should include any Affiliate of the Company.

SECTION 10.    General Provisions

     (a)    No Rights to Awards

     No Employee, Director, Tyco Director, Officer, Participant or other Person
shall have any claim to be granted any Award, and there is no obligation for
uniformity of treatment of Employees, Directors, Tyco Directors, Participants,
Officers or holders or beneficiaries of Awards.  The terms and conditions of
Awards need not be the same with respect to each recipient.  No Participant
shall have the rights of a shareholder with respect to any Award unless and
until Shares have been issued and his name entered in the Company's register of
members as the holder of such Shares.

     (b)    Delegation

     Subject to the terms of the Plan and applicable law, the Committee may
delegate to one or more officers or managers of the Company or any Subsidiary,
or to a committee of such officers or managers, the authority, subject to the
terms and limitations as the Committee shall determine, to grant Awards to, or
to cancel, modify or waive rights with respect to, or to alter, discontinue,
suspend, or terminate Awards held by, Employees who are not officers or
directors of the Company or Tyco Directors for purposes of Section 16 of the
Exchange Act, or any successor section thereto, or who are otherwise not subject
to such Section.

     (c)    Withholding

     The Company or any Affiliate is hereby authorized to withhold from any
Award, from any payment due or transfer made under any Award or under the Plan
or from any

                                       15
<PAGE>

compensation or other amount owing to a Participant the amount (in cash, Shares,
other securities, other Awards or other property) of any applicable withholding
taxes in respect of an Award, its exercise, or any payment or transfer under an
Award or under the Plan and to take such other action as may be necessary in the
opinion of the Company to satisfy all obligations for the payment of such taxes.

     (d)  No Limit on Other Compensation Arrangements

     Nothing contained in the Plan shall prevent the Company or any Affiliate
from adopting or continuing in effect other compensation arrangements (subject
to shareholder approval if such approval is required), and such arrangements may
be either generally applicable or applicable only in specific cases.

     (e)    No Right to Employment

     Neither the Company nor any Affiliate is obligated by or as a result of the
Plan to continue the Participant in employment and the Plan shall not interfere
in any way with the right of the Company or any Affiliate to terminate the
employment of the Participant at any time.

     The grant of an Award does not entitle the Participant to any benefits
other than that granted under this Plan.  Any benefits granted under this Plan
are not part of the Participant's ordinary salary, and shall not be considered
as part of such salary in the event of severance, redundancy or resignation.
Participant understands and accepts that the benefits granted under the Plan are
entirely at the grace and discretion of the Company and that the Board retains
the right to amend or terminate the Plan at any time in accordance with Section
7 of the Plan.

     (f)    Governing Law

     The validity, construction, and effect of the Plan and any rules and
regulations relating to the Plan shall be determined in accordance with the laws
of Bermuda; except that any references to the laws of the United States shall be
interpreted in accordance with relevant United States law.  In addition, the
Committee may amend the terms of the Plan and any Awards or Agreement in order
to comply with the laws of Bermuda or the laws of any other applicable
jurisdiction.

     (g)    Severability

     If any provision of the Plan or any Award is or becomes or is deemed to be
invalid, illegal, or unenforceable in any jurisdiction or as to any Person or
Award, or would disqualify the Plan or any Award under any law deemed applicable
by the Committee, such provision shall be construed or deemed amended to conform
to applicable laws, or if it cannot be construed or deemed amended without, in
the determination of the Committee, materially altering the intent of the Plan
or the Award, such provision shall be stricken as to such jurisdiction, Person
or Award and the remainder of the Plan and any such Award shall remain in full
force and effect.

                                       16
<PAGE>

     (h)    Additional Powers

     The Committee may refuse to issue or transfer any Shares or other
consideration under an Award if, acting in its sole discretion, it determines
that the issuance or transfer of such Shares or such other consideration might
violate any applicable law or regulation or entitle the Company to recover the
same under Section 16(b) of the Exchange Act, and any payment tendered to the
Company by a Participant, other holder or beneficiary in connection with the
exercise of such Award shall be promptly refunded to the relevant Participant,
holder or beneficiary.

     (i)    No Trust or Fund Created

     Neither the Plan nor any Award shall create or be construed to create a
trust or separate fund of any kind or a fiduciary relationship between the
Company or any Subsidiary and a Participant or any other Person.  To the extent
that any Person acquires a right to receive payments from the Company or any
Subsidiary pursuant to an Award, such right shall be no greater than the right
of any unsecured general creditor of the Company or any Subsidiary.

     (j)    No Fractional Shares

     No fractional Shares shall be issued or delivered pursuant to the Plan or
any Award, and the Committee shall determine whether cash, other securities, or
other property shall be paid or transferred in lieu of any fractional Shares or
whether such fractional Shares or any rights thereto shall be canceled,
terminated or otherwise eliminated.

     (k)    Headings

     Headings are given to the Sections and subsections of the Plan solely as a
convenience to facilitate reference.  Such headings shall not be deemed in any
way material or relevant to the construction or interpretation of the Plan or
any provision thereof.

SECTION 11.    Effective Date of the Plan

     This amended Plan shall be effective as of the date of its approval by the
Board, subject to the approval of the shareholders of the Company.

SECTION 12.    Term of the Plan

     This Plan will remain in effect until the Board, subject to Section 7,
decides to terminate it.  However, unless otherwise expressly provided in the
Plan or in an applicable Agreement, any Award granted before the date the Plan
is terminated may, and the authority of the Board or the Committee to amend,
alter, adjust, suspend, discontinue, or terminate any such Award or to waive any
conditions or rights under any such Award shall, extend beyond such date.

                                       17<PAGE>   1

                                                                     EXHIBIT 4.6

                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                         ARCH COMMUNICATIONS GROUP, INC.

     Arch Communications Group, Inc. (hereinafter called the "Corporation"),
organized and existing under and by virtue of the General Corporation Law of the
State of Delaware, does hereby certify as follows:

     At a duly convened meeting of the Board of Directors of the Corporation, a
resolution was duly adopted pursuant to Section 242 of the General Corporation
Law of the State of Delaware setting forth amendments to the Restated
Certificate of Incorporation of the Corporation, as amended by a Certificate of
Designation dated October 13, 1995 stating the designation and number of shares,
and fixing the relative rights, preferences and limitations, of the
Corporation's Series B Junior Participating Preferred Stock (the "Series B
Certificate of Designation") and a Certificate of Designation dated June 29,
1998 stating the designation and number of shares, and fixing the relative
rights, preferences and limitations, of the Corporation's Series C Convertible
Preferred Stock (as so amended, the "Restated Certificate of Incorporation"),
and declaring such amendments to be advisable. The stockholders of the
Corporation duly approved said proposed amendments in accordance with Section
242 of the General Corporation Law of the State of Delaware at a duly convened
meeting of stockholders. The resolutions setting forth the amendments are as
follows:

RESOLVED:      That Article FOURTH of the Restated Certificate of
               Incorporation of the Corporation, as previously amended,
               be and hereby is further amended by deleting paragraph (a)
               of said Article FOURTH and inserting in lieu thereof the
               following:

               (a) The aggregate number of shares of all classes of stock which
               the Corporation shall have authority to issue is 375,000,000
               shares, consisting of (i) 300,000,000 shares of Common Stock,
               $.01 par value per share ("Common Stock"), (ii) 65,000,000 shares
               of Class B Common Stock, $.01 par value per

<PAGE>   2

               share ("Class B Common Stock"), and (iii) 10,000,000 shares of
               preferred stock, $.01 par value per share ("Preferred Stock"), of
               which 300,000 shares have been designated as Series B Junior
               Participating Preferred Stock, $.01 par value per share, 250,000
               shares have been designated as Series C Convertible Preferred
               Stock, $.01 par value per share, and 9,450,000 shares remain
               available for future designation and issuance in accordance with
               the General Corporation Law of the State of Delaware.

FURTHER
RESOLVED:      That Article FOURTH of the Restated Certificate of Incorporation
               be and hereby is amended by deleting subparagraph (b)(i) of said
               Article FOURTH and inserting in lieu thereof the following:

               (i) Common Stock and Class B Common Stock.

                    (A) Subject to the provisions of any series of Preferred
               Stock which may at the time be outstanding, the holders of Common
               Stock and Class B Common Stock shall be entitled to receive, when
               and as declared from time to time by the Board of Directors out
               of any funds legally available for the purpose, such dividends as
               may be declared from time to time by the Board of Directors. When
               and as dividends are declared thereon, whether payable in cash,
               property or securities of the Corporation, each holder of Common
               Stock or Class B Common Stock will be entitled to participate in
               such dividends ratably on a per share basis. In the event of any
               liquidation, dissolution or winding up of the Corporation,
               whether voluntary or involuntary, or upon the distribution of its
               assets, after the payment in full or the setting apart for
               payment of such preferential amounts, if any, to which the
               holders of Preferred Stock at the time outstanding shall be
               entitled, the remaining assets of the Corporation available for
               payment and distribution to stockholders shall, subject to any
               participating or similar rights of any series of Preferred Stock
               at the time outstanding, be distributed ratably among the holders
               of Common Stock and Class B Common Stock at the time outstanding
               on a per share basis. Shares of Common Stock shall have no
               preference, conversion, exchange, preemptive or other similar
               rights. Shares of Class B Common Stock shall have no preference,
               exchange, preemptive right or other similar rights, shall be
               identical in all respects to shares of Common Stock except as set
               forth in subparagraphs (B), (C) and (D) below, and shall have no
               conversion rights except as set forth in subparagraphs (C) and
               (D) below.

                    (B) Except as otherwise required by the General Corporation
               Law of the State of Delaware or this Certificate of
               Incorporation, on all matters to be voted on by the Corporation's
               stockholders, the Common Stock will be entitled to one vote per
               share. Except as otherwise required by the General

<PAGE>   3

               Corporation Law of the State of Delaware or this Certificate of
               Incorporation, the Class B Common Stock shall not be entitled to
               vote with respect to the election of directors and shall be
               entitled to 1/100th vote per share on all other matters to be
               voted on by the Corporation's stockholders. Except as otherwise
               required by the General Corporation Law of the State of Delaware
               or this Certificate of Incorporation, the Common Stock, the Class
               B Common Stock and the Preferred Stock shall vote as a single
               class with respect to all matters as to which such shares are
               entitled to vote.

                    (C) Upon any transfer of shares of Class B Common Stock to a
               person or entity other than (i) any person or entity who received
               Class B Common Stock pursuant to Section 4.3(C) of the Debtor's
               Third Amended Joint Plan of Reorganization dated November 30,
               1998 as filed by MobileMedia Corporation, MobileMedia
               Communications, Inc. and MobileMedia Communications, Inc.'s
               direct and indirect subsidiaries with the United States
               Bankruptcy Court for the District of Delaware, Case No. 97-174
               (PJW), including the Rights Offering as defined therein (the
               "Initial Distributees"), (ii) any other person or entity who,
               when taken together with any of the Initial Distributees, would
               constitute a "person" or "group" as such terms are used in
               Sections 13(d) and 14(d) of the Securities Exchange Act of 1934,
               as amended, or (iii) any "affiliate" (as such term is defined in
               Rule 405 promulgated under the Securities Act of 1933, as
               amended) of any of them (collectively, the "Class B Holders"),
               such transferred shares shall automatically convert into an
               identical number of shares of Common Stock without any action on
               the part of any person or entity (except as follows). The Class B
               Holder transferring such shares shall surrender to the
               Corporation at its principal office the share certificate or
               certificates evidencing all such shares of Class B Common Stock
               being transferred together with a certificate (a "Transfer
               Certificate") (i) stating the number of shares of Class B Common
               Stock being transferred to such transferee and (ii) stating that,
               to the knowledge of such Class B Holder, after due inquiry, such
               transferee is not a Class B Holder. Promptly after the delivery
               of such share certificate or certificates, together with such
               Transfer Certificate, the Corporation shall (i) cause to be
               issued in the name of the transferee identified in the Transfer
               Certificate and delivered to such Class B Holder, or to such
               person as directed by his or its written order, a share
               certificate or certificates for the number of shares of Common
               Stock equal to the number of shares of Class B Common Stock being
               transferred to such transferee and (ii) cause to be issued in the
               name of such Class B Holder and delivered to such Class B Holder
               a share certificate or certificates evidencing the number of
               shares, if any, of Class B Common Stock evidenced by the share
               certificate or certificate(s) surrendered to the Corporation not
               being so transferred. Upon such transfer, all rights with respect
               to the Class B Common Stock so converted will terminate, except
               only the rights of the holders thereof, upon surrender of their
               share certificate or certificates therefor, to receive
               certificates registered in the name of its transferee for the
               number of

<PAGE>   4

               shares of Common Stock into which such Class B Common Stock has
               been converted, and payment of any declared but unpaid dividends
               thereon.

                    (D) Any Class B Holder may, at any time and from time to
               time by surrendering to the Corporation at its principal office a
               share certificate or certificates for shares of Class B Common
               Stock together with a certificate (a "Conversion Certificate")
               stating that such Class B Holder has transferred shares of Common
               Stock (in an amount set forth in such Conversion Certificate) to
               a transferee that, to the knowledge of such Class B Holder, after
               due inquiry, is not a Class B Holder, request that the
               Corporation exchange shares of Common Stock, on a one-for-one
               basis, for a number of shares of Class B Common Stock not greater
               than the number of shares of Common Stock set forth in such
               Conversion Certificate. The Corporation shall, upon receipt of
               such certificate or certificates and the Conversion Certificate
               in a form the Corporation deems appropriate, issue an equal
               number of shares of Common Stock in exchange for such number of
               shares of Class B Common Stock set forth in any Conversion
               Certificate.

                    (E) All certificates evidencing shares of Class B Common
               Stock which are surrendered for transfer and conversion in
               accordance with the provisions of subparagraph (C) above, or as
               accepted for conversion in accordance with the provisions of
               subparagraph (D) above, shall, from and after the presentation
               thereof together with any other documentation required hereunder,
               be deemed to have been retired and cancelled and the shares of
               Class B Common Stock represented thereby converted into Common
               Stock for all purposes. The Corporation may thereafter take such
               appropriate action (without the need for stockholder action) as
               may be necessary to reduce the authorized Class B Common Stock
               accordingly.

FURTHER
RESOLVED:      That Article FOURTH of the Restated Certificate of Incorporation
               be and hereby is amended by deleting subparagraph (b)(ii) of
               said Article FOURTH.

FURTHER
RESOLVED:      That the Series B Certificate of Designations be and hereby is
               amended by deleting Section 1 thereof and inserting in lieu
               thereof the following:

               Section 1. DESIGNATION AND AMOUNT. The shares of such series
               shall be designated as "Series B Junior Participating Preferred
               Stock" (the "Series B Preferred Stock") and the number of shares
               constituting the Series B Preferred Stock shall be 300,000. Such
               number of shares may be increased or decreased by resolution of
               the Board of Directors; provided that no decrease shall reduce
               the number of shares of Series B Preferred Stock to a number less
               than the number of shares then outstanding plus the number of
               shares reserved for

<PAGE>   5

               issuance upon the exercise of outstanding options, rights or
               warrants or upon the conversion of any outstanding securities
               issued by the Corporation convertible into Series B Preferred
               Stock.

     IN WITNESS WHEREOF, the Corporation has caused its corporate seal to be
affixed hereto and this Certificate of Amendment to be signed by its Chairman
and Chief Executive Officer and attested by its Secretary this 27th day of May,
1999.

                                      ARCH COMMUNICATIONS GROUP, INC.

                                          /s/ C. Edward Baker, Jr.
                                      By:---------------------------------
                                      C. Edward Baker, Jr.
                                      Chairman and Chief Executive Officer

Dated:  May 27, 1999

ATTEST:

/S/ GARRY B. WATZKE
------------------------------
Garry B. Watzke
Secretary

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