Grandstream UCM6304 IP PBX System with 4x FXO/4x FXS
Grandstream UCM6304 IP PBX System with 4x FXO/4x FXS
SKU:IPG-UCM6304
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- 12 months Manufacturer Warranty
Product Information
| Brand | Grandstream |
|---|---|
| Category | VOIP Gateways |
| SKU | IPG-UCM6304 |
| Availability | In Stock |
Overview
- The Grandstream UCM6304 is a powerful on-premise IP PBX system that centralises all business communication—voice, video, conferencing, and collaboration—on a single network platform. Built on Asterisk 16 open-source telephony, it scales to support up to 2000 users and 300 concurrent calls, making it ideal for growing businesses.
With four FXO and FXS ports, the UCM6304 seamlessly bridges legacy analogue telephone lines and modern SIP endpoints, providing flexibility during network transitions. The system includes built-in conferencing, video calling, and a native Wave application for desktop and mobile, enabling unified communication across all devices.
Security is embedded throughout, featuring secure boot, unique certificates, and automated NAT firewall traversal for secure remote connections. Advanced codec support—including Full-Band Opus and H.264/H.265 video—ensures high-quality calls even over congested networks with up to 50% packet loss tolerance.
The UCM6304 integrates with cloud management via GDMS and supports third-party APIs for CRM and PMS platforms, allowing businesses to extend functionality and maintain centralised control across distributed teams.
Specifications
| Concurrent Calls | 300 |
|---|---|
| Maximum Users | 2000 |
| FXO Ports | 4 |
| FXS Ports | 4 |
| Network Ports | 3x Gigabit auto-sensing RJ45 with integrated PoE+ |
| NAT Support | Yes |
| Voice Codec | Full-Band Opus |
| Video Codec | H.264, H.263, H.263+, H.265, VP8 |
| Packet Loss Tolerance | Up to 50% |
| Conferencing | Built-in platform with desktop, mobile, and SIP support |
| Operating System | Asterisk 16 open-source telephony |
| Security Features | Secure boot, unique certificate, random default password |
| Cloud Management | Compatible with GDMS |
| API Support | Yes, for third-party integrations |
| Warranty | 12 months |
Key Features
Ideal For
FAQs
How many users and concurrent calls does the UCM6304 support?
The UCM6304 supports up to 2000 users and 300 concurrent calls, making it suitable for medium to large organisations.
Can the UCM6304 connect to existing analogue telephone lines?
Yes, the UCM6304 includes 4x FXO ports for PSTN connections and 4x FXS ports for analogue telephone extensions, allowing integration with legacy phone systems.
What video conferencing features does the UCM6304 provide?
The system includes built-in conferencing and meetings platform supporting desktop, mobile, and SIP endpoints. It also supports H.264, H.265, and VP8 video codecs for high-quality video calls.
Is the UCM6304 cloud-compatible?
Yes, the UCM6304 is compatible with GDMS (Grandstream Device Management System) for cloud-based setup, management, and monitoring.
What security features are included?
The UCM6304 includes secure boot, unique certificates, random default passwords, and automated NAT firewall traversal for secure remote connections.
Can the UCM6304 integrate with CRM and PMS platforms?
Yes, the UCM6304 provides an available API for third-party integrations, including CRM and PMS platforms.
What happens if there is network congestion or packet loss?
The Full-Band Opus voice codec and H.264/H.265 video codec provide jitter resilience with tolerance for up to 50% packet loss, ensuring call quality even on unstable networks.
