Grandstream IP PBX System (UCM6308A) – A high-performance, large-scale IP PBX system designed to unify business communications. Supporting up to 3,000 users and offering up to 450 concurrent calls, it is an ideal solution for medium to large enterprises. The UCM6308A provides voice, video, and messaging services with high security and quality. Thanks to its built-in conferencing features, robust data encryption, and extensive management capabilities, it is a reliable solution for maintaining efficient workflows both within and outside the company.