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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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                                    FORM 8-K

                                 CURRENT REPORT

     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

                                  June 14, 2006

                Date of Report (Date of earliest event reported)

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                              SONUS NETWORKS, INC.
             (Exact Name of Registrant as Specified in its Charter)

                DELAWARE                000-30229           04-3387074
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      (State or Other Jurisdiction     (Commission       (IRS Employer
            of Incorporation)          File Number)    Identification No.)

                250 APOLLO DRIVE, CHELMSFORD, MASSACHUSETTS 01824
               (Address of Principal Executive Offices) (Zip Code)

                                 (978) 614-8100

              (Registrant's telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     [ ] Written communications pursuant to Rule 425 under the Securities
Act (17 CFR 230.425)

     [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange
Act (17 CFR 240.14a-12)

     [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

     [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))

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ITEM 1.01. ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT. On June 14, 2006, the Compensation Committee of the Board of Directors of Sonus Networks, Inc. (the "Company") approved a bonus program for fiscal year 2006 for executive officers and employees, including certain executive officers of the Company reporting under Section 16(a) of the Securities Exchange Act of 1934. Under the program, any bonus to the Chief Executive Officer is awarded at the discretion of the Compensation Committee and any bonuses to other executive officers and employees are awarded at the discretion of the Chief Executive Officer and Compensation Committee. The bonus awards are based on the Company's achievement of certain bookings, revenue, operating profit and internal controls targets for fiscal year 2006, as well as individual performance objectives. The target bonus amount for each eligible executive officer is set forth below: TARGET NAME TITLE INCENTIVE ------------------ --------------------------- ------------- Hassan Ahmed Chief Executive Officer $ 318,750 Jim Collier Vice President, 207,123 Worldwide Sales Steve Edwards Chief Marketing Officer 151,410 Paul McDermott Vice President, Finance 38,000 and Controller Albert Notini President and Chief 276,250 Operating Officer Ellen Richstone Chief Financial Officer 160,680 2

SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: June 19, 2006 SONUS NETWORKS, INC. By: /s/ Charles J. Gray ---------------------------------- Charles J. Gray Vice President, General Counsel and Corporate Secretary 3