RESTATED CERTIFICATE OF INCORPORATION

                                       OF

                              TII INDUSTRIES, INC.


      1.    The name of the corporation is TII INDUSTRIES, INC.

      2.    The address of its registered office in the State of Delaware is No.
1209 Orange Street, in the City of Wilmington, County of New Castle. The name of
its registered agent at such address is The Corporation Trust Company.

      3.    The nature of the  business or purposes to be  conducted or promoted
is to  engage in any  lawful  act or  activity  for  which  corporations  may be
organized under the General Corporation Law of Delaware.

      4.    The  aggregate  number of shares of stock of all  classes  which the
corporation  shall  have  authority  to  issue  is  31,000,000,   consisting  of
30,000,000  shares of Common  Stock  having a par value of $.01 per  share,  and
1,000,000 shares of Preferred Stock having a par value of $1.00 per share.

      The powers,  preferences  and the  relative,  participating,  optional and
other rights and the qualifications,  limitations and restrictions of each class
of stock, and the express grant of authority to the Board of Directors to fix by
resolution the designations and the powers, preferences and rights of each share
of Preferred Stock and the qualifications, limitations and restrictions thereof,
which  are not  fixed by this  Restated  Certificate  of  Incorporation,  are as
follows:

      A.    COMMON STOCK

            I.    Dividends, etc.

   
                  Subject to the rights of the holders of Preferred  Stock,  and
subject to any other provisions of this Certificate of Incorporation, as amended
from time to time,  holders of Common  Stock shall be  entitled to receive  such
dividends and other  distributions in cash, stock or property of the corporation
as may be declared  thereon by the Board of  Directors  from time to time out of
assets or funds of the corporation legally available therefor.
    


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            II.   Voting

                  At every  meeting of the  stockholders  each  holder of Common
Stock  shall be entitled to one (1) vote in person or by proxy for each share of
Common Stock standing in his name on the transfer books of the corporation.

            III.  Liquidation Rights

                  In the event of any dissolution,  liquidation or winding up of
the affairs of the corporation,  whether voluntary or involuntary, after payment
or provision for payment of the debts and other  liabilities of the corporation,
the holders of each series of  Preferred  Stock shall be entitled to receive out
of the net assets of the  corporation,  an amount  for each  share  equal to the
amount  fixed and  determined  by the Board of Directors  in any  resolution  or
resolutions  providing  for the issuance of any  particular  series of Preferred
Stock,  plus an amount  equal to all  dividends  accrued and unpaid on shares of
such series to the date fixed for  distribution,  and no more, before any of the
assets of the  corporation  shall be  distributed or paid over to the holders of
Common Stock.  After payment in full of said amounts to the holders of Preferred
Stock of all series,  the remaining assets and funds of the corporation shall be
divided  among and paid  ratably to the  holders of Common  Stock.  If upon such
dissolution,   liquidation  or  winding  up,  the  assets  of  the   corporation
distributable  as aforesaid  among the holders of Preferred  Stock of all series
shall be  insufficient  to  permit  full  payment  to them of said  preferential
amounts, then such assets shall be distributed among such holders,  first in the
order of their respective  preferences,  and second,  as to such holders who are
next  entitled to such assets and who rank  equally  with regard to such assets,
ratably  in  proportion  to the  respective  total  amounts  which they shall be
entitled  to  receive  as  provided  in  this  subparagraph  III.  A  merger  or
consolidation of the corporation with or into any other corporation or a sale or
conveyance of all or any part of the assets of the corporation  (which shall not
in fact result in the  liquidation of the  corporation  and the  distribution of
assets to  stockholders)  shall not be deemed to be a voluntary  or  involuntary
liquidation or dissolution or winding up of the  corporation  within the meaning
of this subparagraph III.

      B.    Preferred Stock

            The  Board  of  Directors  is  authorized,  subject  to  limitations
prescribed by law and the  provisions  of this  subsection B, to provide for the
issuance of the Preferred Stock in series, and by filing a certificate  pursuant
to the General Corporation Law, to establish the number of shares to be included
in each such  series,  and to fix the  designation,  preferences  and  relative,
participating, optional or other special rights and qualifications,  limitations
or  restrictions  of the shares of each such series.  The authority of the Board
with respect to each series shall include,  but not be limited to, determination
of the following:

                  (1) the  number of shares  constituting  that  series  and the
distinctive designation of that series;


                                       A-2





                  (2)  whether  the  holders of shares of that  series  shall be
entitled to receive  dividends  and, if so, the rates,  conditions  and times of
such  dividends,  any  preference of any such dividends to, and the relation to,
the dividends payable on any other class or classes of stock or any other series
of the same class and whether dividends shall be cumulative or noncumulative;

                  (3)  whether  the  holders of that  series  shall have  voting
rights in addition to the voting rights provided by law and, if so, the terms of
such voting rights;

                  (4) whether shares of that series shall be  convertible  into,
or  exchangeable  for, at the option of either the holder or the  corporation or
upon the happening of a specified event, shares of any other class or classes or
of any  other  series  of the same or other  class  or  classes  of stock of the
corporation and, if so, the terms and conditions of such conversion or exchange,
including  provision for  adjustment of the  conversion or exchange rate in such
events as the Board of Directors may determine;

                  (5) whether shares of that series shall be redeemable  and, if
so, the terms and  conditions  of such  redemption,  including the date or dates
upon or after which they shall be redeemable and the amount per share payable in
case of  redemption,  which amount may vary under  different  conditions  and at
different redemption dates;

                  (6)  whether  shares of that  series  shall be  subject to the
operation of a retirement or sinking fund and, if so subject,  the extent to and
the manner in which it shall be applied to the  purchase  or  redemption  of the
shares of that series,  and the terms and  provisions  relative to the operation
thereof;

                  (7) the  rights  of  shares  of that  series  in the  event of
voluntary  or  involuntary  liquidation,   dissolution  or  winding  up  of  the
corporation  and any  preference of any such rights to, and the relation to, the
rights in respect  thereto  of any other  class or classes of stock or any other
series of the same class; and

                  (8) whether shares of that series shall be subject or entitled
to any other  preferences,  and the other relative,  participating,  optional or
other special rights and  qualifications,  limitations or restrictions of shares
of that series.

      C.    Authorized Shares of Capital Stock

   
            Except as may be provided in the terms and  conditions  fixed by the
Board of  Directors  for any series of Preferred  Stock,  and in addition to any
other vote that may be required by statute,  stock  exchange  regulations,  this
Certificate of Incorporation or any amendment  hereof,  the number of authorized
shares of any class or classes of stock of the  corporation  may be increased or
decreased  by the  affirmative  vote of the  holders of a majority of the voting
power of the outstanding shares of capital stock of the corporation  entitled to
vote.
    


                                       A-3





      5.    The corporation is to have perpetual existence.

      6.    In  furtherance  and not in  limitation  of the powers  conferred by
statute, the Board of Directors is expressly authorized to make, alter or repeal
the By-laws of the corporation,  except that the affirmative vote of the holders
of at least 75% of the  outstanding  shares of capital stock of the  corporation
entitled to vote in the  election of directors  (considered  for this purpose as
one class) shall be required to make, alter or repeal, or to adopt any provision
inconsistent  with,  Sections 6, 10 or 11 of the Certificate of Incorporation or
Sections 1 or 2 of Article V or Article XII of the By-laws of the corporation.

      7.    Meetings of stockholders  may be held within or without the State of
Delaware,  as the by-laws may provide.  The books of the corporation may be kept
(subject  to any  provision  contained  in the  statutes)  outside  the State of
Delaware at such place or places as may be  designated  from time to time by the
board  directors  or in the by-laws of the  corporation.  Elections of directors
need not be by written  ballot  unless the by-laws of the  corporation  shall so
provide.

      8.    Whenever a  compromise  or  arrangement  is  proposed  between  this
corporation  and  its  creditors  or any  class  of  them  and/or  between  this
corporation  and its  stockholders  or any class of them, any court of equitable
jurisdiction  within the State of Delaware may, on the  application in a summary
way of this  corporation  or of any  creditor or  stockholder  thereof or on the
application of any receiver or receivers  appointed for this  corporation  under
the  provisions  of  Section  291 of  Title  8 of the  Delaware  Code  or on the
application of trustees in dissolution or of any receiver or receivers appointed
for this  corporation  under the  provisions  of  Section  279 of Title 8 of the
Delaware Code order a meeting of creditors or class of creditors,  and/or of the
stockholders or class of stockholders of this  corporation,  as the case may be,
to be summoned in such manner as the said court directs. If a majority in number
representing  three-fourths  in value of the  creditors  or class of  creditors,
and/or of the stockholders or class of stockholders of this corporation,  as the
case may be, agree to any compromise or arrangement and to any reorganization of
this  corporation  as consequence of such  compromise or  arrangement,  the said
compromise or arrangement  and the said  reorganization  shall, if sanctioned by
the court to which the said  application  has been  made,  be binding on all the
creditors  or class of  creditors,  and/or on all the  stockholders  or class of
stockholders,  of  this  corporation,  as the  case  may  be,  and  also on this
corporation.

      9.    The corporation reserves the right to amend, alter, change or repeal
any provision contained in this certificate of incorporation,  in the manner now
or hereafter  prescribed by statute,  and all rights conferred upon stockholders
herein are granted subject to this reservation.

      10.   The  number  of  directors  which  shall  constitute  the  Board  of
Directors  shall be not less than  five (5) nor more  than  nine (9).  The exact
number of directors within the maximum and minimum  limitation  specified herein
shall be fixed from time to time by resolution  of the Board of  Directors.  The
directors  shall be classified  with respect to the time during which they shall
severally hold office by dividing them into three classes, each class consisting
of  one-third  of the number of  directors  constituting  the entire  Board,  as
authorized by resolution of the Board of Directors, and all

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directors of the corporation  shall hold office until their  successors shall be
elected  and shall  qualify  or until  their  earlier  resignation  or  removal.
However,  in  instances  where the total number of  directors  constituting  the
entire Board, as authorized by resolution of the Board of Directors, is a number
other than an integral  multiple of three, the number of directors to be elected
each year shall reasonably  approximate the number which would have been elected
had the total number of directors  constituting the whole Board been an integral
multiple of three,  as determined  by the Board of Directors.  At the meeting of
the  stockholders  of the  corporation  held for the  election of the first such
classified Board, the directors of the first class (designated Class I) shall be
elected for a term of one year,  the  directors of the second class  (designated
Class  II) for a term  of two  years,  and  the  directors  of the  third  class
(designated Class III) for a term of three years,  and, in each instance,  until
their respective successors are elected and qualified. At each annual meeting of
stockholders  held  thereafter,  the successors to the class of directors  whose
term shall  expire that year shall be elected to hold office for a term of three
years, so that the term of office of one class of directors shall expire in each
year.  Any newly  created  directorships  or any decrease in  directorships,  as
authorized  by resolution  of the Board of  Directors,  shall be so  apportioned
among the classes as to make all classes as nearly equal in number as possible.

            The directors  shall have the power,  from time to time, to increase
or  decrease  their own  number,  within the  maximum  and  minimum  limitations
specified therein, by resolution of the Board of Directors. Directors may not be
removed from office except for cause by the affirmative  vote or not less than a
majority of the shares entitled to vote at an election of directors.

            Newly created directorships resulting from an increase in the number
of  directors  and all  vacancies  occurring in the Board,  including  vacancies
occurring in the Board by reason of the removal of  directors,  may be filled by
the affirmative vote of a majority of the remaining directors though less than a
quorum of the Board of  Directors,  and  directors  so chosen  shall hold office
until the next  election of the class for which such  directors  shall have been
chosen, and until their successors shall be elected and qualified.

      11.   (a) Except as otherwise  expressly  provided in subparagraph  (c) of
this  Section  11, the  affirmative  vote of the  holders of at least 75% of the
outstanding shares of capital stock of the corporation  entitled to vote thereon
shall be required to authorize:  (i) any merger,  combination,  amalgamation  or
consolidation  of the  corporation or any of its  subsidiaries  with or into any
other  corporation  or  entity;  or (ii)  any  sale,  lease or  exchange  by the
corporation of property or assets  constituting all or substantially  all of the
property and assets of the corporation and its subsidiaries  taken as a whole to
or with any other corporation,  person or other entity; or (iii) the dissolution
of the  corporation  if, in the case of (i) or (ii) above, as of the record date
for the  determination  of  stockholders  entitled to notice thereof and to vote
thereon,  such  other  corporation,  person or entity is the  beneficial  owner,
directly  or  indirectly,  of 10% or more of the  outstanding  shares of capital
stock  of the  corporation  entitled  to  vote  in  the  election  of  directors
(considered for the purposes of this Section 11 as one class).  Such affirmative
vote shall be required  notwithstanding the fact that some lesser percentage may
be specified in any  agreement or contract to which the  corporation  is a party
(including,  but not limited to, any agreement  with any stock exchange on which
any of the

                                       A-5





corporation's capital stock may be listed) and shall be in addition to any class
or series vote to which any class or series of stock of the  corporation  may be
entitled.

            (b)   For the purposes of this Section 11, any  corporation,  person
or other  entity  shall be deemed to be the  beneficial  owner of any  shares of
capital stock of the corporation (i) which it has the right to acquire,  hold or
vote pursuant to any  agreement,  or otherwise,  or (ii) which are  beneficially
owned, directly or indirectly (including shares deemed owned through application
of clause (i) above), by any other corporation,  person or entity (A) with which
it or its  "affiliate" or "associate"  (as those terms are defined in Rule 12b-2
of the General Rules and Regulations  under the Securities  Exchange Act of 1934
as  in  effect  on  December  1,  1979)  has  any   agreement,   arrangement  or
understanding  for the purpose of  acquiring,  holding,  voting or  disposing of
capital  stock  of  the  corporation,   or  (B)  which  is  its  "affiliate"  or
"associate".  For the purpose of this Section 11, the outstanding  shares of any
class of capital  stock of the  corporation  shall  include  shares deemed owned
through the  application of clauses (i) and (ii) above but shall not include any
other shares which may be issuable  pursuant to any agreement,  or upon exercise
of conversion rights, warrants, options or otherwise.

   
            (c)   The  provisions  of this Section 11 shall not apply to (i) any
transaction  referred  to in clauses  (i) and (ii) of  subparagraph  (a) of this
Section 11 with any corporation of which a majority of the outstanding shares of
all capital stock entitled to vote in the election of directors  (considered for
this  purpose  as one class) is owned  beneficially  by the  corporation  or its
subsidiaries  if such  transaction  is not being carried out to  circumvent  the
requirements  of  this  Section  11;  or (ii)  any  transaction  referred  to in
subparagraph (a) of this Section 11 if the Board of Directors of the corporation
shall by resolution  have approved,  in the case of clause (iii) of subparagraph
(a) of this Section 11, such dissolution proposed by, or suggested on behalf of,
or approved a memorandum of understanding with such other corporation, person or
other entity with respect to, and  substantially  consistent with, a transaction
described in clauses (i) or (ii) of  subparagraph  (a) of this Section 11, with,
any  corporation,  person or entity  prior to the time such  other  corporation,
person or entity (except any person, corporation or entity who as of December 3,
1979 was the beneficial owner of at least 10% of the outstanding shares of stock
of the Company  entitled to vote in the election of directors)  became the owner
of 10% or more of the  outstanding  shares of capital  stock of the  corporation
entitled to vote in the  election of directors  (considered  for this purpose as
one class).
    

            (d)   The Board of Directors of the corporation shall have the power
and duty to  determine  for the  purposes  of this  Section  11, on the basis of
information  then known to it, whether and when (i) any  corporation,  person or
other entity  beneficially owns 10% or more of the outstanding shares of capital
stock  of the  corporation  entitled  to  vote  in  the  election  of  directors
(considered  for  this  purpose  as one  class),  and/or  is an  "affiliate"  or
"associate"  of  another;  (ii) any  proposed  sale,  lease,  exchange  or other
disposition  involves all or substantially  all of the assets of the corporation
and its  subsidiaries  taken as a whole;  (iii) any  transaction  referred to in
subparagraph  (a) of this Section 11 with any corporation of which a majority of
the outstanding  shares of all capital stock entitled to vote in the election of
directors  (considered  for this purpose as one class) is owned  beneficially by
the  corporation  or its  subsidiaries  is being carried out to  circumvent  the
requirement

                                       A-6




of this  Section 11; and (iv) any  memorandum  of  understanding  referred to in
subparagraph  (c) of  this  Section  11 is  substantially  consistent  with  the
transaction to which it relates.  Any such  determination  by the Board shall be
conclusive and binding for all purposes of this Section 11.

      12.   No director of the  corporation  shall be  personally  liable to the
corporation  or any of its  stockholders  for  monetary  damages  for  breach of
fiduciary  duty as a director,  except for  liability  (i) for any breach of the
director's duty of loyalty to the corporation or its stockholders, (ii) for acts
or omissions  not in good faith or which  involve  intentional  misconduct  or a
knowing  violation  of law,  (iii)  under  Section 174 of the  Delaware  General
Corporation Law, as the same exists or hereafter may be amended, or (iv) for any
transaction from which the director derived an improper personal benefit. If the
Delaware  General  Corporation Law hereafter is amended to authorize the further
elimination or limitation of the liability of directors, then the liability of a
director of the corporation, in addition to the limitation of personal liability
provided herein, shall be limited to the fullest extent permitted by the amended
Delaware  Corporation  Law.  Any repeal or  modification  of this Article by the
stockholders  of the  corporation  shall be  prospective  only,  and  shall  not
adversely  affect any limitation on the personal  liability of a director of the
corporation existing at the time of such repeal or modification.

                                       A-7