EXHIBIT 99.1

                 CERTIFICATE PURSUANT TO 18 U.S.C. SECTION 1350,
                    AS ADOPTED PURSUANT TO SECTION 906 OF THE
                           SARBANES-OXLEY ACT OF 2002


     Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and in connection
with  the  Quarterly Report on Form 10-Q of Concurrent Computer Corporation (the
"Corporation")  for  the  quarter  ended  March  31,  2003,  as  filed  with the
Securities  and  Exchange  Commission  on  the  date  hereof (the "Report"), the
undersigned,  the  President  and  Chief  Executive  Officer  of the Corporation
certifies  that:

     (1)  The Report fully complies with the requirements of Section 13(a) or
          15(d) of the Securities Exchange Act of 1934; and

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



  /s/ Jack A. Bryant
- -----------------------------------------
Jack A. Bryant
President and Chief Executive Officer
May 15, 2003


A signed original of this written statement required by Section 906 has been
provided to Concurrent Computer Corporation and will be retained by Concurrent
Computer Corporation and furnished to the Securities and Exchange Commission or
its staff upon request.