Sonus Networks, Inc. (Sonus) is a provider of communication solutions such as Session Initiation Protocol (SIP) and 4G-LTE (Long Term Evolution)-based solutions. The company’s offerings include Session Border Controllers(SBC), open services switches, diameter signaling controllers, signal transfer points, PSX policy and routing servers, Web Real-Time Communications (WebRTC) services solutions, cloud exchange network applications, and network management solutions, among others. It also offers professional consulting and services supporting its solutions. The company offers its solutions to both wire line and wireless communications service providers such as long distance carriers, local exchange carriers, Internet service providers, wireless operators, cable operators, international telephone companies and carriers that provide services to other carriers. It distributes its products and services through direct sales force, indirect sales force, value added resellers and channel partners. The company operates in the US, Europw, Middle Easat, Africa and Asia Pacific regions. Sonus is headquartered at Westford, Massachusetts, the US.