DLJ ****** DONALDSON, LUFKIN & JENRETTE ****** DLJ                        June 6, 2000                        Joseph J. Farley US (212) 892-6290                                                   John DiFucci US (212) 892-4257                                                    Jane M. Ngo US (212) 892-0587                                                                                                               QUINTUS CORPORATION (QNTS: $9.25) ##+                                   Receivables Improve; Attractive Investment Opportunity                                                                                                  Range:            Earnings Per Share              2001 vs 2000     % Chg         59-6              Old    New   P/E Ratios  F1Q $(0.09) vs  0.01     NM           (FY:Mar.) 2001E  $(0.20) $       NM        F2Q  (0.08) vs  0.01     NM                     2000A   (0.18)         NM        F3Q  (0.04) vs (0.12)    NM                     1999A   (0.37)         NM        F4Q   0.02  vs (0.06)    NM                                                                                            Yield: %            Market Cap.: $302 Mil         5-Yr. Growth Rate: 50%         Dividend: $         Avg. Trading Vol.(000): 313   Book Value: $3.33                                                                                                                                                                                 RATING: Buy Change: None 12-Mo. Target: $85                                                                                                                      VIEWPOINT                                                                        We believe the recent share price of QNTS stock provides a very attractive       investment opportunity and has led us to revisit two issues that, in our         opinion, are pertinent to the perception and potential of the company:                                                                                            1.   Balance sheet:  We expect DSO's to decline for the June quarter.  The         company's balance sheet attracted scrutiny following the March quarter           primarily due to the lengthening of receivables as measured in DSO's.  As        we have noted previously, this effect can be attributed to a single marquee      customer with a very large contract.  We now believe that about 50% of this      fee has been collected since the end of the March period.  We also               reiterate that we do not expect the company to be constrained by cash            issues in the near future.  The company used approximately $8.4 million in       cash during the March quarter, while it had cash of almost $60 million at        the end of the period.  This reserve should be more than sufficient given        our expectation that the company becomes earnings and cashflow positive by       the March 2001 quarter.                                                                                                                                         2.   SEBL alliance:  Upon further review, we believe that QNTS' recently           announced relationship with SEBL should yield even greater benefits than we      originally anticipated.  The alliance could eventually lead to QNTS              providing the communications infrastructure for every SEBL server sale.          SEBL has traditionally utilized third-party routing technology and with the      QNTS partnership, SEBL will now be able to provide multimedia queuing and        intelligent routing capabilities per QNTS' eContact universal routing            technology.  In addition, QNTS will market and sell SEBL's eBusiness             Applications Suite in conjunction with QNTS' eContact suite, and the             companies will partner in joint marketing and sales efforts worldwide as         part of the SEBL Alliance program.  We believe that all of this should lead      to further exposure for QNTS' products, and subsequently, incremental sales      opportunities.  This relationship should be further leveraged by SEBL's          installed customer base of over 1,000, aggressive salesforce of about 250,       massive distribution channel, and the complementary nature of the                companies' products.                                                                                                                                            We continue to believe that the e-CRM (Customer Relationship Management)         segment of the software market will experience rapid growth over the next        five years as a result of the significant value that these solutions bring       to an enterprise.  We believe that QNTS' position as the most complete           solution at this early stage of the industry's development is further            strengthened by the strategic alliance with SEBL.  Given our expectations        for the growth of the e-CRM arena and QNTS' unique position to capitalize        on that growth, we believe that QNTS will emerge as a leader as the              industry emerges.  We reiterate our Buy rating on the shares and would           encourage investors to be aggressive buyers at current levels.                                                                                                    +    WITHIN THE PAST THREE YEARS DONALDSON, LUFKIN & JENRETTE SECURITIES         CORPORATION HAS BEEN A MANAGING OR CO-MANAGING UNDERWRITER OF THE COMPANY'S      SECURITIES.                                                                                                                                                       ##   DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION ("DLJSC") ACTED AS      UNDERWRITER IN THE MOST RECENT PUBLIC OFFERING OF SECURITIES OF QUINTUS          CORPORATION (THE "COMPANY"), MAKES A MARKET IN THE SECURITIES OF THE             COMPANY AND, IN ADDITION, AFFILIATES OF DLJSC OWN A SUBSTANTIAL POSITION IN      SECURITIES OF THE COMPANY AND AN EMPLOYEE OF AN AFFILIATE OF DLJSC IS A          DIRECTOR OF THE COMPANY.                                                                  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