Description
The Grandstream UCM6304 IP PBX is a feature-rich unified communications solution designed for businesses that require a reliable and scalable business telephone system.
The UCM6304 supports up to 2,000 users and 300 concurrent calls, making it suitable for medium to large organizations, offices, hotels, educational institutions and other demanding business environments.
It provides hybrid connectivity through 4 FXO ports and 4 FXS ports, allowing businesses to connect traditional PSTN telephone lines and analog phones or fax devices alongside SIP-based IP telephony.
The system includes three self-adaptive Gigabit Ethernet ports with PoE+, supporting switched, routed or dual-mode operation. It also includes NAT router functionality for flexible network deployment.
The UCM6304 integrates voice, video, conferencing and collaboration capabilities. Grandstream’s Wave platform provides desktop and mobile communication, while the UCM supports advanced conferencing and remote communication features.
For management and deployment, the UCM6304 supports ZeroConfig provisioning, GDMS cloud management, API integration and secure remote connectivity through UCM RemoteConnect.
- Supports up to 2,000 users
- Supports up to 300 concurrent calls
- 4 FXO ports for PSTN lines
- 4 FXS ports for analog phones and fax
- 3 × Gigabit Ethernet ports
- Integrated PoE+
- Built-in NAT router
- Audio and video conferencing
- Supports up to 200 audio conference participants
- Supports up to 60 video conference participants through Wave Desktop
- Zero-configuration provisioning for Grandstream SIP endpoints
- GDMS cloud management support
- UCM RemoteConnect for secure remote access
- API support for third-party integrations
- Advanced security features
- Opus, G.711, G.722 and other voice codecs
- H.264, H.263, H.263+, H.265 and VP8 video codec support
- Designed for medium and large business deployments









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