Sonus Networks, Inc. (Sonus Networks) is a provider of voice, video and data infrastructure solutions for wireline and wireless telephone service providers. The Company's products include infrastructure equipment and software that enable voice services to be delivered over Internet protocol (IP) networks. Its products also interoperate with network operators' existing telephone infrastructure. Sonus Networks sells its products principally through a direct sales force in the United States, Europe, the Middle East, Africa, Japan and Asia-Pacific. The Company's target customers consists of both traditional and emerging communications service providers, including long-distance carriers, local exchange carriers, Internet service providers, wireless operators, cable operators, international telephone companies and carriers that provide services to other carriers.