Sonus Networks Inc was incorporated in August 1997 as a Delaware corporation. The Company provides secure, reliable and scalable Internet Protocol networks to communications service providers and enterprises who offers Session Initiation Protocol or SIP-based solutions, including Voice over Internet Protocol, video and Unified Communications. The Company's products include GSX9000 VoIP softswitch, Sonus ASX Feature Server and Sonus PSX Centralized Routing & Policy Server, Sonus SBC 1000, Sonus SBC 2000, Sonus SBC 5100/5110, Sonus SBC 5200/5210, Sonus SBC 9000, SBC VX, Sonus SBC SWe, and Sonus SBC 7000. The Company currently provides communication solutions to service providers and to enterprises that enable them to protect, secure and unify their real time communications infrastructures. This enables the customers to seamlessly link and leverage multivendor, multiprotocol communications systems and applications across their networks in an ecosystem of IP-enabled devices such as smartphones and tablets. The Company sells its products through direct sales with additional sales support from regional channel partners. Currently the Company, with its channel partner program, Sonus Partner Assure Program, focuses on expanding its coverage of service provider and enterprise markets. The Company also sells its products with the assistance of distributors and resellers such as Arrow S3, Dimension Data, Nissho Electronics Corporation (Japan), ScanSource, TSG, Sumitomo Corporation (Japan), Verizon and Westcon. The customers include AT&T, Belgacom ICS, BT Group, CenturyLink, COLT, KDDI, Level 3, Orange, Softbank Corporation, TalkTalk, Tata Communications, T-Systems Business Services (a division of Deutsche Telekom Group), Verizon, Vonage and XO Communications. The Company competes with companies such as AudioCodes Ltd., Cisco Systems, Inc., Ericsson LM Telephone Company, GENBAND Inc., Huawei Technologies Co. Ltd., Metaswitch and Oracle Corporation. As of December 31, 2013, the Company held 110 U.S. patents with expiration dates ranging from May 2014 through October 2031, and had 29 patent applications pending in the United States.