Grandstream UCM6304 IP PBX is a robust on-premise unified communication platform designed for medium to large enterprises needing powerful voice, video, and collaboration solutions. This IP PBX supports 4 FXO and 4 FXS ports, enabling seamless integration of analog PSTN lines and analog phones. With support for up to 2000 registered users and 300 concurrent G.711 calls, UCM6304 ensures scalable, enterprise-grade communication.

Key features include:

• Full support for wideband Opus voice codec plus G.711, G.722, G.729, and more for crystal-clear voice quality.
• Advanced video capabilities supporting H.264, H.263, H.263+, H.265, and VP8 codecs for video calls, conferencing, and surveillance.
• Three auto-sensing Gigabit RJ45 ports with PoE+ support for easy device connectivity and power delivery.
• Built-in conferencing and meetings platform, compatible with the Wave app across Android, iOS, and desktop (Chrome, Firefox).
• Enterprise telephony functionalities such as IVR, call queues, call recording, voicemail-to-email, fax-to-email, paging/intercom, and flexible call routing.
• Extensive security with secure boot, unique certificate authentication, SRTP/TLS media encryption, and randomized default passwords.
• Supports zero-configuration provisioning of Grandstream SIP endpoints simplifying deployment.
• API availability for integration with third-party CRM and PMS systems.
• Cloud management compatibility with Grandstream Device Management System (GDMS) and automated NAT firewall traversal.
• Based on the reliable Asterisk 16 open-source telephony platform.

For detailed product information, visit the [Grandstream UCM6300 Series page](https://www.grandstream.com/products/ucm6300-ecosystem/product/ucm6300-series).