The U.S. Department of Defense this week picked Northrop Grumman to build its $51 million IP video conference network, based on hardware and software from Cisco and Radvision, network services from AT&T and technology from other partners.The $51 million network project was awarded by the DoD\u2019s Defense Information Systems Agency (DISA). Northrop Grumman will install the DISA\u2019s Defense Video System version II (DVS-II) network, which upgrades the current network from digital to IP video and audio conferencing. The DISA provides communications technology for the White House, the secretary of defense and the Joint Chiefs of Staff.DVS-II will be built on Cisco\u2019s IP Video Conferencing (IPVC) 3540 Multipoint Control Unit and MeetingPlace IP voice\/video conferencing software. Radvision\u2019s iVIEW multimedia conferencing middleware, which integrates applications such as Microsoft Office, is another large part of the infrastructure.Radvision says the deal will be worth $6 million to $8 million in software and services, while Cisco would not say how much of its IP video hardware, software and services are involved.Otto Guenther, vice president and general manager of the Northrop Grumman\u2019s Tactical Systems Division, said in a statement that DVS-II will provide \u201ca key set of tools to enhance the Department of Defense's net-centric operations\u201d and allow U.S military organizations to communicate better during combat.In addition to the Cisco\/Radvision components, Northrop Grumman will use AT&T network services, along with services and support from Beltway-area IT companies FC Business Systems, CritiCom, and NETCONN Solutions.While Cisco is helping build the DOD's video net, it's also going after video technology in living rooms. The networking giant recently announced plans to acquire Scientific-Atlanta in a deal valued at $6.9 billion.