Grandstream UCM6304 IP PBX
Product Description
The Grandstream UCM6304 IP PBX is a high-performance unified communications platform designed for medium and large businesses that require a secure, scalable, and feature-rich business telephony solution. By integrating voice, video, conferencing, messaging, mobility, and collaboration into a single on-premises appliance, the Grandstream UCM6304 helps organizations improve communication while eliminating recurring licensing costs. It supports up to 2,000 SIP users and 300 concurrent calls, making it an excellent choice for enterprises, hotels, healthcare facilities, educational institutions, call centers, and multi-site organizations.
Built on the Asterisk telephony platform, the Grandstream UCM6304 offers a comprehensive suite of enterprise communication features, including IVR (Auto Attendant), intelligent call routing, voicemail, call recording, call queues, ring groups, extension management, audio conferencing, video conferencing, and web meetings. It features 4 FXS ports and 4 FXO ports, enabling seamless integration with analog telephones and PSTN lines while supporting SIP-based IP communications. The system also supports zero-configuration provisioning for Grandstream IP phones and is compatible with third-party SIP devices and SIP trunks.
The integrated Wave application enables users to make and receive business calls, join meetings, exchange instant messages, and collaborate securely from Windows, macOS, Android, iOS, or a web browser. Advanced security features such as secure boot, encrypted communications, automatic NAT traversal, and cloud management through GDMS ensure reliable and protected communications. With three Gigabit Ethernet ports, dual power supply support, rack-mountable design, and enterprise-grade reliability, the Grandstream UCM6304 IP PBX delivers a complete unified communications solution for organizations looking to modernize their business communications.
Key Features
- Supports up to 2,000 SIP users
- Handles up to 300 concurrent calls
- 4 FXS ports for analog telephone connectivity
- 4 FXO ports for PSTN line integration
- Built-in IVR (Auto Attendant) and intelligent call routing
- Voicemail, call recording, ring groups, and call queues
- Supports audio conferencing, video conferencing, and web meetings
- Free Wave desktop, mobile, and web application
- Zero-configuration provisioning for Grandstream IP phones
- Compatible with third-party SIP phones and SIP trunks
- Open API support for CRM, PMS, and third-party integrations
- Three Gigabit Ethernet ports with integrated NAT router
- Advanced security with TLS, SRTP, secure boot, and encrypted communications
- Automatic NAT traversal for secure remote users
- Cloud provisioning and centralized management through GDMS
- Dual power supply support for enhanced reliability
- Rack-mountable enterprise design
- Based on the Asterisk open-source telephony platform
- Ideal for enterprises, hotels, hospitals, educational institutions, call centers, and multi-site businesses










