Exhibit 99.4


                Certification Required by 18 U.S.C. Section 1350
     (as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)
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I, David Kreinberg, as Chief Financial Officer of Comverse Technology, Inc. (the
"Company"), certify, pursuant to 18 U.S.C. Section 1350 (as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002), that to my knowledge:

(1)   the accompanying Quarterly Report on Form 10-Q of the Company for the
      quarterly period ended July 31, 2002 (the "Report"), filed with the U.S.
      Securities and Exchange Commission, fully complies with the requirements
      of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as
      amended; and

(2)   the information contained in the Report fairly presents, in all material
      respects, the financial condition and results of operations of the
      Company.


Dated: September 13, 2002


                                              /s/ David Kreinberg
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                                              David Kreinberg
                                              Chief Financial Officer