William Hartwell

Sonus, Inc. provides networked solutions for communications service providers and enterprises to help them advance, protect, and unify their communications and improve collaboration. Its products include session border controllers, policy/routing servers, media and signalling gateways and network analytics tools. The company's 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. Sonus was founded in August 1997 and is headquartered in Westford, MA.

Riverbed Technology, Inc. develops applications, websites, networks, data centers, the cloud, and remote offices. It offers visibility, intelligent optimization, and simplified control for all applications. The firm's solutions include application performance monitoring, network performance monitoring, end-to-end performance management, hyper-converge branch, wide area network optimization and hybrid wide area network. The company was founded by Jerry M. Kennelly and Steven McCanne in May 2002 and is headquartered in San Francisco, CA.