Grandstream UCM6304A Audio Series IP PBX

Experience a high-performance on-premise IP PBX solution with the Grandstream UCM6304A, tailored for small to medium-sized enterprises requiring robust audio communication capabilities. This audio-only PBX appliance supports up to 1000 users and 150 concurrent calls, featuring 4 FXO and 4 FXS RJ11 ports for seamless analog PSTN and extension connectivity.

Key Features:

• Supports Full-Band Opus voice codec with 48 kHz sampling for crystal-clear audio quality alongside other codecs like G.711, G.722, G.729, and iLBC.
• Built-in Instant Messaging (IM), Audio Conferencing, and Web Meetings platform compatible with Grandstream's Wave app for desktops and mobile devices, enabling unified communications across multiple endpoints.
• Three Gigabit auto-sensing RJ45 network ports with integrated PoE+ support allow flexible deployment and easy integration into existing networks.
• Zero-configuration provisioning simplifies setup for Grandstream SIP endpoints.
• Advanced security features including secure boot, unique certificates, and randomized default passwords to protect communication integrity.
• Supports UCM RemoteConnect cloud service for secure remote user access and hybrid deployments.
• Fully manageable through Grandstream Device Management System (GDMS) for cloud-based setup and monitoring.
• Robust platform with high availability through hot standby and local redundancy capabilities.

For detailed product information, visit the [Grandstream official product page](https://www.grandstream.com/products/ip-pbxs/ucm-series-ip-pbxs/product/ucm6300-audio-series-ip-pbx).