Grandstream UCM6304A IP PBX (Audio Only)

The Grandstream UCM6304A is a feature-rich, on-premise IP PBX system designed for small to medium-sized businesses seeking a comprehensive audio communication solution. It supports up to 1,000 users and 150 concurrent calls, integrating voice, instant messaging, audio conferencing, and web meetings into a unified platform. With built-in security features, zero-configuration provisioning, and compatibility with Grandstream’s Wave app, the UCM6304A offers a scalable and secure communication solution without the need for monthly licensing fees.

Product Features

Scalable User and Call Capacity

Supports up to 1,000 users and 150 concurrent calls, accommodating growing business communication needs.

Built-in Unified Communications Platform

Integrates voice, instant messaging, audio conferencing, and web meetings, accessible from computers, mobile devices, and SIP endpoints.

Free Wave App for Enhanced Mobility

The Wave app allows easy voice and instant messaging communications using desktops, web browsers, and Android/iOS devices.

Advanced Security Protection

Features secure boot, unique certificates, and random default passwords to protect calls and accounts.

Gigabit Network Ports with PoE+

Equipped with three Gigabit auto-sensing RJ45 network ports with integrated PoE+ and support for NAT routers.

Automated NAT Firewall Traversal

Facilitates secure remote connections through automated NAT firewall traversal services.

High Availability and Reliability

Supports Hot Standby High-Availability and local dual deployment for enhanced reliability.

Full-Band Opus Voice Codec Support

Supports Full-Band Opus voice codec with jitter resilience up to 50% packet loss.

Cloud Management Compatibility

Compatible with Grandstream Device Management System (GDMS) for cloud setup, management, and monitoring.

Open Source Telephony Operating System

Based on Asterisk version 16 open-source telephony operating system.

Product Specifications

• User Capacity: Up to 1,000 users
• Concurrent Calls: Up to 150 concurrent calls
• FXS Ports: 4 RJ11 ports
• FXO Ports: 4 RJ11 ports
• Network Ports: 3 Gigabit auto-sensing RJ45 with integrated PoE+
• USB Ports: 2 × USB 3.0
• SD Card Slot: 1
• Display: 320×240 color LCD with touch screen
• Voice Codecs: Opus, G.711 A-law/U-law, G.722, G.726-32, G.729A/B, iLBC, GSM
• Video Codecs: H.264, H.263, H.263+, H.265, VP8
• DTMF Methods: In-band, RFC2833, SIP INFO
• Security Protocols: SRTP, TLS, HTTPS, SSH, 802.1X
• Power Supply: DC 12V, 1.5A
• Operating Temperature: 0°C to 45°C
• Storage Temperature: -10°C to 60°C
• Humidity: 10% to 90% non-condensing
• Mounting Options: Wall mount and desktop
• Compliance: FCC Part 15 Class B, CE EN 55032, EN 55035, EN 61000-3-2, EN 61000-3-3, EN 62368-1

The Grandstream UCM6304A IP PBX offers a robust and scalable communication solution, integrating advanced features and security measures to meet the needs of modern businesses.