Sonus Networks' Shareholders Re-Elect Directors at Annual Meeting

WESTFORD, Mass., June 20, 2008 – Sonus Networks (Nasdaq: SONS - News), a market leader in IP communications infrastructure, today held its Annual Meeting of Shareholders. Hassan M. Ahmed, John P. Cunningham and Paul J. Severino were re-elected to three-year terms to the Board of Directors expiring in 2011 by a majority of the shares represented at the event, each receiving approximately 57% of the votes of the shares represented at the meeting. Legatum Capital, which accounted for approximately 27% of the total shares represented at the meeting, withheld its vote for the three directors. The Company's shareholders also ratified the appointment by the Audit Committee of the Board of Directors of Deloitte & Touche LLP as Sonus' independent registered public accounting firm for the fiscal year ending December 31, 2008.

About Sonus Networks

Sonus Networks, Inc. is a market leader in IP communications infrastructure for wireline and wireless service providers. With its comprehensive IP Multimedia Subsystem (IMS) solution, Sonus addresses the full range of carrier applications, including residential and business voice services, wireless voice and multimedia, trunking and tandem switching, carrier interconnection and enhanced services. Sonus' voice infrastructure solutions are deployed in service provider networks worldwide. Founded in 1997, Sonus is headquartered in Westford, Massachusetts. Additional information on Sonus is available at http://www.sonusnet.com.

Sonus is a registered trademark of Sonus Networks, Inc. All other company and product names may be trademarks of the respective companies with which they are associated.