EXHIBIT 31.1

                                 CERTIFICATION
                                 -------------

I, T. Gary Trimm, certify that:

     1.   I have reviewed this quarterly report on Form 10-Q of Concurrent
          Computer Corporation;

     2.   Based on my knowledge, this report does not contain any untrue
          statement of a material fact or omit to state a material fact
          necessary to make the statements made, in light of the circumstances
          under which such statements were made, not misleading with respect to
          the period covered by this report;

     3.   Based on my knowledge, the financial statements, and other
          financial information included in this report, fairly present in all
          material respects the financial condition, results of operations and
          cash flows of the registrant as of, and for, the periods presented in
          this report;

     4.   The registrant's other certifying officer and I are responsible
          for establishing and maintaining disclosure controls and procedures
          (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and
          internal control over financial reporting (as defined in Exchange Act
          Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

               a)   Designed such disclosure controls and procedures, or
                    caused such disclosure controls and procedures to be
                    designed under our supervision, to ensure that material
                    information relating to the registrant, including its
                    consolidated subsidiaries, is made known to us by others
                    within those entities, particularly during the period in
                    which this report is being prepared;

               b)   Designed such internal control over financial
                    reporting, or caused such internal control over financial
                    reporting to be designed under our supervision, to provide
                    reasonable assurance regarding the reliability of financial
                    reporting and the preparation of financial statements for
                    external purposes in accordance with generally accepted
                    accounting principles;

               c)   Evaluated the effectiveness of the registrant's
                    disclosure controls and procedures and presented in this
                    report our conclusions about the effectiveness of the
                    disclosure controls and procedures, as of the end of the
                    period covered by this report based on such evaluation; and

               d)   Disclosed in this report any changes in the
                    registrant's internal control over financial reporting that
                    occurred during the registrant's most recent fiscal quarter
                    that has materially affected, or is reasonably likely to
                    materially affect, the registrant's internal control over
                    financial reporting.

     5.   The registrant's other certifying officer and I have disclosed,
          based on our most recent evaluation of internal control over financial
          reporting, to the registrant's auditors and the audit committee of the
          registrant's board of directors (or persons performing the equivalent
          functions):

               a)   All significant deficiencies and material weaknesses in
                    the design or operation of internal control over financial
                    reporting which are reasonably likely to adversely affect
                    the registrant's ability to record, process, summarize and
                    report financial information; and

               b)   Any fraud, whether or not material, that involves
                    management or other employees who have a significant role in
                    the registrant's internal control over financial reporting.


Date: May 7, 2007

                                   /s/ T. Gary Trimm
                                   -----------------------------
                                   Name: T. Gary Trimm
                                   Title:  President and Chief Executive Officer
                                   (Principal Executive Officer)