In mission-critical communications, secure voice and data exchange are essential. The military requires reliable, field-proven technology with 24/7 availability that supports multiple security domains – during both standard operations and high-stakes missions. These solutions must be interoperable with existing IT infrastructure and legacy systems while complying with the latest safety and security standards. Our voice communication systems provide secure, rapid and interoperable communication – whether fixed, deployable, mobile, manned, or unmanned. Our advanced gateway for IP-based military communications seamlessly integrates and converts protocols across all channels, ensuring secure and reliable operations. 

With more than 75 years of experience in mission-critical communications, Frequentis is a trusted partner to armed forces worldwide. Our long-standing expertise, operational deployments and continuous innovation ensure secure communication solutions that are field-proven, interoperable and future-ready. The Frequentis Defence voice portfolio covers the full spectrum of secure military communications, including secure voice switching, audio distribution, RED/BLACK separation, cryptographic integration and IP-based communication gateways. All solutions are designed to integrate seamlessly into existing communication networks and IT infrastructures while meeting the highest security and availability requirements. 

Engineered for military operations, the technology is built without a single point of failure and features built-in redundancy to ensure continuous availability, even under degraded or contested conditions. The robust system architecture supports reliable operations across distributed, fixed and deployed scenarios.

Frequentis Defence secure communications are designed to enhance mission effectiveness by providing operators with an easy-to-use, comprehensive and secure toolset for efficient mission management. The solution securely combines RED and BLACK voice communications in a single binaural headset and intuitive human-machine interface, enabling clear communication, improved situational awareness, and faster decision-making in demanding operational environments. 

At the core of multi-domain secure voice communication, our iSecCOM secure audio switch (iSAS) ensures exceptional security and reliable domain separation. iSAS is the world’s smallest secure audio switch and is certified by the German Federal Office for Information Security (BSI) in accordance with Common Criteria (CC) EAL4+. Its ability to support simultaneous operation within RED and BLACK security domains combines maximum security with operational convenience. The integration of external GFE cryptographic equipment enables the secure exchange of classified information with other national and coalition systems. Designed for continuous operation in mission-critical environments, Frequentis Defence voice communication solutions deliver high resilience, built-in redundancy and uncompromising security – providing armed forces with a trusted communication backbone for today’s and future operations.