AGREEMENT AND PLAN OF MERGER

BY AND AMONG

CONCERTO SOFTWARE, INC.,

ASCEND MERGER SUB, INC.

AND

ASPECT COMMUNICATIONS CORPORATION

DATED AS OF JULY 5, 2005

AGREEMENT AND PLAN OF MERGER

BY AND AMONG

CONCERTO SOFTWARE, INC.,

ASCEND MERGER SUB, INC.

AND

ASPECT COMMUNICATIONS CORPORATION

DATED AS OF JULY 5, 2005

                                    BYLAWS

                                      OF

                     ASPECT TELECOMMUNICATIONS CORPORATION
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                                  BYLAWS OF

                     ASPECT TELECOMMUNICATIONS CORPORATION

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                              CONVERSION AGREEMENT

                          DATED AS OF FEBRUARY 13, 2004

                                      AMONG

                       ASPECT COMMUNICATIONS CORPORATION,

                           VISTA EQUITY FUND II, L.P.

                                       AND

                           VISTA EQUITY PARTNERS, LLC
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<DESCRIPTION>CONVERSION AGREEMENT
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                              CONVERSION AGREEMENT

                          DATED AS OF FEBRUARY 13, 2004

                                      AMONG

                       ASPECT COMMUNICATIONS CORPORATION,

                           VISTA EQUITY FUND II, L.P.

                                       AND

                           VISTA EQUITY PARTNERS, LLC














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         . . .

                               EMPLOYEE AGREEMENT

In exchange for my becoming employed (or my employment being continued) by
Aspect Communications Corporation, or its subsidiaries, affiliates, or
successors (hereinafter referred to collectively as the "Company"), I hereby
agree as follows:

Employment at Will

I agree that this Agreement is not an employment contract and that I have the
right to resign and the Company has the right to terminate my employment at any
time for any reason, with or without cause. This is the full and complete
agreement between myself and the  . . .

                        ASPECT COMMUNICATIONS CORPORATION

                       PREFERRED STOCK PURCHASE AGREEMENT

                                   Dated as of

                                November 14, 2002

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ARTICLE I DEFINITIONS                                                       1

     1.1 Definitions; Interpretation. ....................................  1

ARTICLE II ISSUANCE AND SALE OF PREFERRED STOCK ..... . . .

                          REGISTRATION RIGHTS AGREEMENT

     THIS REGISTRATION RIGHTS AGREEMENT (this "Agreement") is made as of
[_______ ___], 2002, between Aspect Communications Corporation, a California
corporation (the "Company"), and Vista Equity Fund II, LP, a Cayman Islands
exempted limited partnership ("Vista").

     The parties to this Agreement are parties to a Preferred Stock Purchase
Agreement dated November 14, 2002 (the "Purchase Agreement"). In order to induce
Vista to enter into the Purchase Agreement, the Company has agreed to  . . .

VOTING AGREEMENT

     THIS VOTING AGREEMENT (this �Agreement�) is entered into as of July 5, 2005, by and between Concerto Software, Inc., a Delaware corporation (�Parent�), and Vista Equity Fund II, L.P. (�Stockholder�).

RECITALS

     A. Stockholder Owns certain shares of Series B Convertible Preferred Stock of Aspect Communications Corporation, a California corporation (the �Company�).

     B. Parent, Ascend Merger Sub, Inc., a California corporation (�Merger Sub�), and the Company are  . . .

VOTING AGREEMENT

     THIS VOTING AGREEMENT (this �Agreement�) is entered into as of July 5, 2005, by and between Concerto Software, Inc., a Delaware corporation (�Parent�), and Vista Equity Fund II, L.P. (�Stockholder�).

RECITALS

     A. Stockholder Owns certain shares of Series B Convertible Preferred Stock of Aspect Communications Corporation, a California corporation (the �Company�).

     B. Parent, Ascend Merger Sub, Inc., a California corporation (�Merger Sub�), and the Company are  . . .

VOTING AGREEMENT

        THIS VOTING AGREEMENT (this �Agreement�) is entered into as of July 5, 2005, by and between Concerto Software, Inc., a Delaware corporation (�Parent�), and Vista Equity Fund II, L.P. (�Stockholder�).

RECITALS

        A.        Stockholder Owns certain shares of Series B Convertible Preferred Stock of Aspect Communications Corporation, a California corporation (the �Company�).

        B.     . . .