## 1 Introduction  
Communication systems in high-security and mission-critical domains present unique challenges and requirements that set them apart from standard networks. These specialized areas, spanning aviation, military operations, emergency services, financial institutions, healthcare, nuclear facilities, space agencies, diplomatic corps, and critical infrastructure, all share a common need for robust, secure, and highly reliable communication channels. This reliability becomes even more essential in multi-channel communication systems, where the uninterrupted operation of high-priority channels is paramount, while lower-priority channels can tolerate some degree of communication loss. Data centers and cloud computing services underpin much of today's digital infrastructure, operating multiple channels to serve diverse client needs [1]. Enterprise applications, especially those in the financial sector, require high-priority channels to ensure consistent uptime and reliability. These channels must be protected against any interruptions to maintain business continuity. Meanwhile, general consumer services operate on lower-priority channels, where occasional service disruptions are less impactful. By using resource reallocation, data centers can shift computational power and bandwidth from low-priority to high-priority channels during critical periods, thereby maintaining the necessary service levels for enterprise clients while managing overall resource efficiency. Public safety and emergency services rely on robust multi-channel communication systems to coordinate their efforts effectively [2]. During emergencies, channels designated for police, fire, and medical services become a high priority, as any communication breakdown can impede response efforts and endanger lives. In contrast, municipal or public works communications are a lower priority and can afford some loss of connectivity. By temporarily reallocating communication resources from public works to emergency services during crises, these systems ensure that high-priority channels remain operational, facilitating efficient and effective emergency response. Aviation communication systems are quintessentially multi-channel, catering to both civilian and military flights [3]. High-priority channels are used for military communications, handling classified and sensitive information that must remain secure and uninterrupted. Civilian communications, operating on lower-priority channels, manage routine flight operations. To ensure the reliability of high-priority channels, aviation systems employ cross-domain redundancy. When high-priority military channels face failures, civilian communication resources can be temporarily utilized to support military operations. Although this may reduce the availability of civilian channels, it ensures that critical military communications remain intact, reflecting a strategic balance to maintain overall system integrity. The multi-channel nature of critical communication systems, coupled with their dual-priority structure, forms the backbone of many high-stakes operational environments. This architecture is not merely a technical choice but a strategic imperative that balances the need for uninterrupted, secure communication with practical operational realities. In these systems, the multi-channel approach serves as a fundamental reliability mechanism. By operating multiple independent channels, the system ensures that the failure of one channel does not compromise the entire communication network. The dual-priority structure of these systems adds another layer of sophistication to their design. The high-priority domain, often referred to as the RED domain in secure communications parlance, handles critical, often classified information that must be protected at all costs. This domain is engineered with the highest levels of security and reliability, often featuring additional encryption, stricter access controls, and more robust infrastructure.