EXHIBIT 23.1 ------------ Consent of Independent Auditors We consent to the incorporation by reference in the registration statement (Form S-8) pertaining to the Inter-Tel, Incorporated 1997 Long Term Incentive Plan and to the Inter-Tel, Incorporated 1997 Employee Stock Purchase Plan of our report dated February 28, 1997 with respect to the consolidated financial statements and schedule of Inter-Tel, Incorporated included in its Annual Report (Form 10-K) for the year ended December 31, 1996, filed with the Securities and Exchange Commission. /s/ ERNST & YOUNG LLP Phoenix, Arizona November 26, 1997 37