The MCS6800 wireless broadband trunking communication system complies with 3GPP standards and fulfills the technical specifications for Mission-Critical (MC) equipment in 5G-R networks. Built on an IMS architecture, it achieves a clear separation between applications and the bearer network and supports fully IP-based LTE, 5G, and future wireless technologies. The system is characterized by standardization, high performance, micro-service design, and multi-level security, delivering multimedia services such as MCPTT, MCVideo, and MCData. It also natively supports 5G-R-specific railway services, including functional numbering for train dispatching and visual-location communication, providing reliable, seamless, and high-quality wireless communications for transport command, operations, and maintenance personnel.