Mission Voice System

The National Aeronautics and Space Administration (NASA) is seeking information from industry on next-generation mission voice communication systems to support launch processing, countdown, and mission execution for Artemis and future programs. The system should be a robust, resilient, IP-based voice communication solution that eliminates or minimizes T1 dependency, supports mission-critical operations, enables seamless inter-center communication, and provides high availability and scalability. Key requirements include native IP/SIP-based architecture, support for RTP/SRTP and SIP signaling, operation without T1 circuits, interface with legacy TDM systems, no single point of failure, geographic redundancy, and high availability. The system should also meet performance requirements such as end-to-end latency of ≤150 ms, support for 500+ users scalable to 1,000+, conference loops/party-line communications, reliable Push-to-Talk (PTT), and deterministic performance under load. Some key features and requirements include: • Native IP/SIP-based architecture • Support RTP/SRTP and SIP signaling • Operate without T1 circuits (preferred) • Interface with legacy TDM systems if required • No single point of failure • Geographic redundancy • High availability and scalability • Secure IP trunking between NASA centers • Multi-site routing and failover capability • Support degraded network conditions • 99.999% availability • Automatic failover at all levels • Redundant call control and media paths • Graceful degradation • Encryption (TLS, SRTP) • Role-based access control • Alignment with NIST 800-53 • Protection against spoofing and DoS attacks