EXHIBIT 32.2

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

As of the date hereof, I, Kurt R. Kneip, certify,  pursuant to 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that
the  Quarterly  Report of Inter-Tel,  Incorporated.  on Form 10-Q for the fiscal
quarter  ended June 30, 2003 fully  complies  with the  requirements  of Section
13(a) or  15(d)  of the  Securities  exchange  Act of 1934 and that  information
contained in such Quarterly  Report on Form 10-Q fairly presents in all material
respects  the  financial  condition  and  results of  operations  of  Inter-Tel,
Incorporated.


                                          By:  /s/  Kurt R. Kneip
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                                        Name:  Kurt R. Kneip
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                                       Title:  Chief Financial Officer
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                                       Dated:  August 14, 2003
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