Companies generally have confidential information- financial projections, intellectual property, trademarked secret formulas, etc. But, the magnitude of secrecy and the need for confidentiality pale in comparison with a government, especially the United States government. Nortel has developed a new unified communications solution based on their Application Server 5300, which provides the level of service assurance and security that government agencies, and civilian agencies linked with the government require. The new offering complies with IPv6 and Department of Defense (DoD) requirements for secure, resilient VoIP and unified communications. The Nortel appliance also supports multi-level precedence and pre-emption, a DoD system to enable the most critical communications higher priority over existing calls.