Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

This amendment amends the original Form 8-K filed May 8, 2009 to include a copy of the press release issued by the Registrant on May 11, 2009, announcing James K. Brewington's appointment to the Board of Directors of the Registrant. The press release is filed herewith as Exhibit 99.1.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

99.1 Press release of Sonus Networks, Inc. dated May 11, 2009 announcing the appointment of a new director to the Board of Directors.

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