Grandstream UCM6308A – IP PBX with 8 FXO, 8 FXS, 1500 Users & 200 Calls

The Grandstream UCM6308A IP PBX is a powerful audio-focused unified communications solution designed for medium to large enterprises that require high-capacity voice communication and maximum reliability. With 8 FXO ports and 8 FXS ports, the system enables seamless integration with traditional PSTN lines and analog devices such as telephones and fax machines, making it ideal for hybrid communication environments.

Supporting up to 1500 users and 200 concurrent calls, the Grandstream UCM6308A IP PBX provides scalable performance for growing organizations. It is part of Grandstream’s Audio Series, focusing on high-quality voice communication and efficient collaboration without the need for video conferencing features, making it optimized for voice-centric deployments.

One of the standout features of the UCM6308A is its high-availability support, including Hot Standby and dual deployment options, ensuring continuous operation and minimal downtime for mission-critical communication systems. The system also includes an advanced audio conferencing platform, supporting up to 9 meeting rooms and 150 participants, making it ideal for internal collaboration and large conference calls.

The device integrates seamlessly with the Grandstream Wave app, allowing employees to connect remotely via smartphones, tablets, or desktops, turning any device into a fully functional office extension. It also supports instant messaging (IM), enhancing team communication beyond voice calls.

For networking, the UCM6308A features three Gigabit Ethernet ports with PoE+ support and an integrated NAT router, providing flexible deployment options and reliable network performance. Advanced telephony features such as IVR (auto-attendant), call queues, voicemail-to-email, call recording, call forwarding, call park and pickup, and Do Not Disturb (DND) ensure professional communication handling.

Security is enterprise-grade, including secure boot, unique device certificates, random default passwords, and TLS/SRTP/HTTPS encryption, ensuring that all communications remain protected. The system is fully manageable via the Grandstream Device Management System (GDMS) for centralized provisioning, monitoring, and firmware updates.

With no licensing fees, a robust hardware design, and a 1U rack-mount form factor, the Grandstream UCM6308A IP PBX is an ideal choice for organizations seeking a reliable, scalable, and secure voice communication solution.