About Grandstream UCM6308 8 FXO 8 FXS 5000 Users

The Grandstream UCM6308 is an enterprise-grade IP PBX built for large businesses that need serious communication horsepower without ongoing licensing fees. With 8 FXO and 8 FXS ports, support for up to 5,000 users, and 450 concurrent calls, it's a rack-mountable powerhouse that brings voice, video, conferencing, and messaging together on one centralised platform — all managed from a clean, touch-screen interface.

Key Features

• No Licensing Fees — An all-in platform with no per-seat or ongoing subscription costs, so you get enterprise-grade unified communications without the monthly bill shock.
• 8 FXO & 8 FXS Ports — Connect directly to PSTN lines and legacy analog devices, making it a great pick for businesses transitioning from traditional telephony without ripping everything out at once.
• High Call Capacity — Handles up to 450 concurrent calls and supports up to 5,000 users, with up to 240 concurrent SRTP encrypted calls for added security.
• Built-In Video Conferencing — Supports up to 8 video conference rooms with 1080p Full HD resolution, plus audio conferencing for up to 160 participants — no third-party platform needed.
• Three Gigabit PoE+ Ports — Three self-adaptive Gigabit RJ45 ports with PoE+ support give you flexible network deployment options, including switched, routed, or dual card mode.
• Wave App & CRM Integration — The free Grandstream Wave app lets staff communicate from desktop or mobile, and open APIs allow integration with CRM and PMS platforms for custom workflows.

Why Choose This Product?

The UCM6308 is a top-notch choice for large organisations that want full control over their communications without the ongoing costs of a hosted platform. It's built on proven Asterisk technology, works with GDMS for cloud-based management, and is backed by our Telrexperts who can help you get it set up and running the way you need.

What's in the Box

• Grandstream UCM6308 IP PBX
• Power Supply
• Ethernet Cable
• Mounting Hardware
• Quick Installation Guide