Grandstream UCM6304 IP PBX

The Grandstream UCM6304 IP PBX is a high-capacity unified communications solution designed for large enterprises and high-volume call environments. Supporting up to 2,000 users and 300 concurrent calls, the Grandstream UCM6304 IP PBX provides a powerful platform for voice, video, and data integration. With 4 FXS and 4 FXO ports built-in, the Grandstream UCM6304 IP PBX offers a comprehensive, zero-license communication ecosystem that balances advanced functionality with ease of management.