Sonus Networks, Inc.(Sonus) is a provider of networked solutions for communications service providers e.g., telecommunications, wireless and cable service providers and enterprises to help them advance, protect and unify their communications and improve collaboration. Its products include session border controllers, Session Initiation Protocol (SIP) session management servers, Voice over IP (VoIP) switches, SIP application servers, multiprotocol signaling gateways and network analytics tools. Its solutions address the need for communications service providers and enterprises to seamlessly link and leverage multivendor, multiprotocol communications systems and applications across their networks, around the world and in a rapidly changing ecosystem of IP-enabled devices, such as smartphones and tablets. In February 2014, Sonus Networks Inc completed the acquisition of Performance Technologies Inc (PT).