Grandstream UCM6304 IP PBX Appliance with 4 FXO, 4 FXS Ports

The Grandstream UCM6304 is an IP PBX appliance that unifies every major communication channel a business relies on. Voice calls, video meetings, and data services all flow through one platform, which keeps management simple and removes the need for multiple standalone systems.

Out of the box, the UCM6304 can register up to 2000 users and handle as many as 300 calls at the same time. Four FXO ports connect the system to public telephone lines, while four FXS ports keep legacy analog devices such as fax machines, cordless phones, or overhead paging speakers in daily service. Three Gigabit network ports provide flexible network design options, and PoE+ support helps reduce cabling requirements for locations that already supply power over Ethernet.

Collaboration tools are built in. Staff can launch video conferences or web meetings without paying license fees, and the system supports the H.264 and H.265 codecs for efficient, high-quality video. Grandstream’s Wave app and the UCM RemoteConnect service extend the office phone system to laptops and mobile phones, letting remote or traveling employees stay connected as if they were sitting at their desks.

IT administrators will appreciate the browser-based interface, which brings call routing, security settings, and user provisioning into one place. An API is available when deeper integration with third-party CRM, facility access, or surveillance solutions is needed. The color LCD touchscreen supplies at-a-glance system status right on the front panel, making on-site troubleshooting faster.

The UCM6304 fits naturally in small or mid-size companies that expect to grow, in branch offices that need to stay in sync with headquarters, or in schools, hotels, and clinics that want modern unified communications without ongoing subscription costs. Because all core features are included at purchase, budgeting remains predictable year after year.

• 4 FXO ports connect to standard analog phone lines
• 4 FXS ports support fax machines, paging horns, or legacy handsets
• Registers up to 2000 users and handles 300 concurrent calls
• Built-in video conferencing and web meeting functionality
• API enables integration with third-party applications and devices
• PoE+ readiness simplifies installation where power over Ethernet is available
• Supports H.264 and H.265 video codecs for efficient streaming
• 320 x 240 front-panel LCD touchscreen offers quick status checks
• Three Gigabit network ports for flexible network design
• No licensing or recurring fees for core features