The Voice over Secure IP (VoSIP) service provides a cost-effective, reliable, and secure means of classified voice communications, secret only, for Command and Control (C2) and non-C2 customers with the capability to communicate directly using point-to-point or conference calling. It does provide a media/voice interface (gateway) to the circuit-switched network providing interoperability between the VoSIP service and the Multilevel Secure Voice service.
VoSIP provides a permanent and long-term solution for global secure communications among all sites that are part of the VoSIP and secure voice services.