Grandstream UCM6308 IP PBX

The Grandstream UCM6308 IP PBX is an enterprise-grade, on-premise unified communications system designed to handle large-scale deployments. It supports up to 3,000 users and 450 concurrent calls, integrating voice, video, messaging, conferencing, and collaboration into one secure and scalable platform. With 8 FXS and 8 FXO ports for analog/PSTN integration, three Gigabit PoE+ ports, and features like the Wave app and UCM RemoteConnect, it delivers powerful, flexible communications—without licensing fees.

 Key Features

• Supports up to 3,000 users and 450 concurrent calls

• 8 FXS and 8 FXO ports for analog/PSTN line integration

• Three Gigabit RJ45 ports with PoE+, and NAT/router or switch configuration

• Built-in Wave app for voice, video, chat, and coworking

• UCM RemoteConnect for secure, cloud-assisted remote extensions

• Audio conferencing for large groups (up to ~300 participants)

• Video conferencing with multiple HD rooms

• Color touchscreen display for system control

• Advanced security measures: secure boot, SRTP, TLS, HTTPS encryption

• Hot-standby failover for high availability

• Zero-touch provisioning for Grandstream endpoints

• REST API support for CRM, PMS, and custom integrations

• Cloud provisioning and monitoring via GDMS

• Built on Asterisk 16 for open-source reliability and flexibility