DIALOGIC CORP
SC 13G/A, 1999-02-12
COMPUTER COMMUNICATIONS EQUIPMENT
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934

                               (Amendment No. 4)*




                              DIALOGIC CORPORATION
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                  COMMON STOCK
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   252499 10 8
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                                     2/13/98
- --------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

         |_|  Rule 13d-1(b)

         |_|  Rule 13d-1(c)

         |X|  Rule 13d-1(d)

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


<PAGE>



CUSIP No.         252499 10 8
- --------------------------------------------------------------------------------

(1)     Names of Reporting Persons.  I.R.S. Identification Nos. of Above Persons
        (entities only):             Kenneth J. Burkhardt, Jr.

- --------------------------------------------------------------------------------

(2)     Check the Appropriate Box if a Member of a Group (See Instructions)  

               (a)
               (b)
- --------------------------------------------------------------------------------

(3)     SEC Use Only
- --------------------------------------------------------------------------------

(4)     Citizenship or Place of Organization:  United States
- --------------------------------------------------------------------------------

Number of Shares Beneficially Owned by Each  (5) Sole Voting Power:  1,449,050
      Reporting Person With
                                             (6) Shared Voting Power: 103,500 - 
                                                              held by trusts
                                                              for the benefit 
                                                              of Mr. Burkhardt's
                                                              children
                                             (7) Sole Dispositive Power: see box
                                                                         5 above
                                             (8) Shared Dispositive Power:   see
                                                                     box 6 above

- --------------------------------------------------------------------------------

(9)    Aggregate Amount Beneficially Owned by Each Reporting Person:  1,552,550
- --------------------------------------------------------------------------------

(10)   Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See 
Instructions)
- --------------------------------------------------------------------------------

(11)    Percent of Class Represented by Amount in Row (9): 9.8%
- --------------------------------------------------------------------------------

(12)     Type of Reporting Person (See Instructions):  IN
- --------------------------------------------------------------------------------


<PAGE>


Item 1(a).  Name Of Issuer:  Dialogic Corporation
- --------------------------------------------------------------------------------

Item 1(b).  Address of Issuer's Principal Executive Offices:  1515 Route 10, 
Parsippany,  New Jersey 07054
- --------------------------------------------------------------------------------

Item 2(a).  Name of Person Filing:  Kenneth J. Burkhardt, Jr.
- --------------------------------------------------------------------------------

Item 2(b).  Address of Principal Business Office or, if None, Residence:  c/o 
Dialogic Corporation, 1515 Route 10, Parsippany, New Jersey 07054
- --------------------------------------------------------------------------------

Item 2(c).  Citizenship:  United States
- --------------------------------------------------------------------------------

Item 2(d).  Title of Class of Securities:  Common Stock
- --------------------------------------------------------------------------------

Item 2(e).  CUSIP No.:  252499 10 8
- --------------------------------------------------------------------------------

Item 3.   If  This  Statement   Is   Filed   Pursuant   to ss.240.13d-1(b) or 
ss.240.13d-2(b)  or (c), check whether the Person Filing is a

         (a) [ ] Broker or dealer registered under Section 15 of the Act.

         (b) [ ] Bank as defined in section 3(a)(6) of the Act.

         (c) [ ] Insurance company as defined in section 3(a)(19) of the Act.

         (d) [ ] Investment company registered under section 8 of the Investment
Company Act of 1940.

         (e) [ ] Investment adviser in accordance ss.240.13d-1(b)(1)(ii)(E).

         (f) [ ] Employee benefit  plan or  endowment  fund in  accordance  with
ss.240.13d-1(b)(1)(ii)(F).

         (g) [ ] Parent  holding company or control  person in  accordance  with
ss.240.13d-1(b)(1)(ii)(G).

<PAGE>

         (h) [ ] Savings association  as defined in section  3(b) of the Federal
Deposit Insurance Act.

         (i) [ ] Church  plan  that  is  excluded   from  the  definition  of an
investment company under section 3(c)(14) of the Investment Company Act of 1940.

         (j) [ ] Group, in accordance with ss.240.13d-1(b)(1)(ii)(J).


Item 4.  Ownership

         (a) Amount Beneficially Owned (as of December 31, 1998):

                  1,552,550

         (b) Percent of Class (as of December 31, 1998):

                  9.8%

         (c) Number of Shares as to which such person has:

             (i) sole power to vote or to direct the vote   1,449,050

            (ii) shared power to vote or to direct the vote    103,500*

           (iii) sole power to dispose or to direct the disposition of 1,449,050

           (iv) shared power to dispose or to direct the disposition of 103,500*

*  Held by trusts for the benefit of Mr. Burkhardt's children

Item 5.  Ownership of Five Percent or Less of a Class.    N/A


Item 6.  Ownership of More Than Five Percent on Behalf of Another Person.   N/A


Item 7.  Identification  and  Classification of the Subsidiary Which Acquired 
         the Security Being Reported on by the Parent Holding Company.  N/A

Item 8.  Identification and Classification of Members of the Group.  N/A

Item 9.  Notice of Dissolution of Group.  N/A

Item 10.  Certification.     N/A




<PAGE>


                                    SIGNATURE

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.



                                  February 11, 1999
                                  ___________________________
                                     (Date)


                                  Kenneth J. Burkhardt, Jr.



                                  By:   /s/ Laura R. Kuntz, Attorney-in-Fact*
                                  ___________________________________________
                                             (Signature)


                                  Kenneth J. Burkhardt, Jr.


                                  By:  Laura R. Kuntz, Attorney-in-Fact      
                                  ___________________________________________
                                            (Name/Title)


*A power of  attorney  has  previously  been  filed  with the  Commission and is
incorporated herein by reference


            Attention: Intentional misstatements or omissions of fact
          constitute Federal criminal violations (See 18 U.S.C. 1001).




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