Product Overview
The Grandstream UCM6304A is a high-capacity audio IP PBX appliance designed for medium to large enterprises that require a scalable and secure unified communication platform. It integrates voice, instant messaging, audio conferencing, web meetings, and mobility features into one powerful on-premise system.
Supporting up to 1000 users and 150 concurrent calls, the UCM6304A provides a robust solution for organizations with high communication demands while maintaining cost efficiency through zero licensing fees.
Key Features
- High User Capacity: Supports up to 1000 SIP users
- Concurrent Calls: Up to 150 simultaneous calls
- FXO/FXS Ports: 4× FXO + 4× FXS for PSTN and analog integration
- Unified Communications Platform: Voice, IM, conferencing & web meetings in one system
- Wave App Support: Desktop, mobile, and web collaboration tools
- 3× Gigabit Ports with PoE+: High-speed networking with integrated router
- Advanced Security: TLS, SRTP, HTTPS, secure boot & certificates
- Zero-Touch Provisioning: Easy deployment of Grandstream endpoints
- High Availability: Supports hot standby failover for reliability
- Cloud Management: GDMS for centralized provisioning and monitoring
Technical Specifications
| Specification | Details |
|---|---|
| User Capacity | Up to 1000 SIP users |
| Concurrent Calls | Up to 150 |
| Conferencing | Up to 120 participants / 7 rooms |
| FXO Ports | 4 × RJ11 |
| FXS Ports | 4 × RJ11 |
| Network Ports | 3× Gigabit (PoE+) |
| Storage | USB 3.0, SD card |
| Display | 320×240 color touchscreen |
| Voice Codecs | Opus, G.711, G.722, G.729, T.38 |
| Security | TLS, SRTP, HTTPS, secure boot |
| Platform | Asterisk-based |
| Management | Web GUI, GDMS Cloud |
| Power | 12V adapter |
Key Benefits
- Enterprise-Ready Communication: Designed for large teams and high call volumes
- All-in-One System: PBX, conferencing, messaging, and mobility in one device
- Flexible Connectivity: Supports SIP, analog phones, and PSTN lines
- Cost Savings: No recurring licensing fees
- Remote Work Enablement: Secure remote access via cloud services
Ideal Use Cases
- Medium to large enterprises
- Call centers and BPO environments
- Multi-branch organizations
- Hotels and hospitality industry
- Healthcare and educational institutions
Management & Deployment
- UCM RemoteConnect: Enables secure remote access without complex firewall configuration
- GDMS Cloud: Centralized device management and monitoring
- Zero Config Provisioning: Plug-and-play setup for Grandstream IP devices
- API Integration: Connect with CRM, PMS, and third-party applications
Package Contents
- Grandstream UCM6304A IP PBX
- Power adapter
- Ethernet cable
- Quick installation guide
Useful Links
- Grandstream Networks Official Resources: https://www.grandstream.com/support/resources
- Datasheet & Documentation: https://www.grandstream.com/support/resources?title=UCM6304A
- Product Listing (Kenya): https://shopit.co.ke/grandstream-ucm6304a-ip-pbx-audio-only.html
- Cloud Management (GDMS): https://www.grandstream.com/products/networking-solutions/gdms
Why Choose Grandstream UCM6304A?
The Grandstream UCM6304A is a powerful, scalable, and enterprise-grade VoIP PBX solution built for organizations that need reliable and secure communication infrastructure. With high user capacity, analog support, unified collaboration tools, and cloud connectivity, it delivers maximum flexibility and performance without ongoing licensing costs.


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