The Grandstream UCM6308 IP PBX is a high-capacity unified communications server designed for medium to large enterprises. It provides a complete on-premise VoIP solution with advanced call handling, conferencing, security, and remote collaboration features—without recurring licensing fees.

• Enterprise-grade IP PBX – Supports large-scale deployments with high call capacity.
• High user & call capacity – Designed for up to 3000 users and 450 concurrent calls.
• Integrated UC platform – Includes voice, video, conferencing, IM, and collaboration tools.
• Remote access & mobility – Built-in NAT firewall traversal and secure remote extensions.
• Strong security – TLS, SRTP, secure boot, and encrypted configuration protect communications.
• No per-user licensing – One-time hardware purchase with no recurring subscription fees.

Technical Specifications