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                                                                    EXHIBIT 23.1

                         INDEPENDENT AUDITORS' CONSENT

     We consent to the use in this Registration Statement of Quintus
Corporation on Form S-1 of our report dated June 18, 1999 (November 10, 1999 as
to Note 15), our report dated June 18, 1999 relating to the financial statement
schedule, and to the reference to us under the headings "Selected Consolidated
Financial Data" and "Experts," all of which are incorporated by reference in
this Registration Statement.

/s/ Deloitte & Touche LLP
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San Jose, California
November 15, 1999