Exhibit 1 VOTING TRUST AGREEMENT Relating to Shares of QUINTUS CORPORATION THIS VOTING TRUST AGREEMENT (the "Agreement") is made and entered into as of November 15, 1999, by and among Sprout Capital VI, L. P., Sprout Capital VII, L. P., DLJ ESC II, L....Voting Trust Agreement • March 22nd, 2001 • Wells Fargo & Co/Mn • National commercial banks • Delaware
