Here is a clean, SEO-optimized product description for the Grandstream UCM6300A IP PBX (Audio Only), written in UTF-8 compliant text with the requested structure and formatting.

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Grandstream UCM6300A IP PBX (Audio Only)

The Grandstream UCM6300A IP PBX is an advanced audio-only unified communications solution designed for small to medium-sized businesses seeking a secure, scalable, and license-free telephony platform. It supports up to 250 SIP extensions and 50 concurrent calls, with full integration of voice services including audio conferencing, voicemail, IVR, call recording, and more. Built on the Asterisk open-source telephony engine, the UCM6300A provides high reliability and flexibility while supporting centralized management through Grandstream’s GDMS and compatibility with the Wave app for remote communications.

Product Features

High-Performance Audio Communication

Supports up to 250 SIP users and 50 concurrent calls, with high-quality voice services optimized for business communication.

Secure and Redundant Connectivity

Equipped with three auto-sensing Gigabit network ports with NAT routing and PoE+ support, offering failover and high availability in mission-critical deployments.

Built-in Audio Conferencing

Includes multi-party audio conferencing with support for up to 50 participants across three conference rooms, ideal for team collaboration and remote meetings.

Zero Configuration Deployment

Features auto-discovery and provisioning for Grandstream SIP endpoints via ZeroConfig, simplifying installation and reducing setup time.

Enterprise-Grade Security

Utilizes SRTP, TLS, HTTPS, secure boot, unique certificates, fail2ban, and encrypted configuration to protect voice traffic and system access.

Centralized Management and Monitoring

Supports the Grandstream Device Management System (GDMS) for cloud-based configuration, monitoring, troubleshooting, and maintenance.

Open-Source and Customizable Platform

Powered by Asterisk 16, enabling robust call control features, including IVR, call queuing, call forwarding, voicemail, fax-to-email, call detail records (CDR), and custom dial plans.

Integration with Wave App

Enables remote voice communication, instant messaging, and collaboration through the Grandstream Wave desktop and mobile applications.

Product Specifications

• Supports up to 250 SIP extensions
• Handles up to 50 concurrent SIP calls
• Built-in 3 audio conference rooms supporting up to 50 participants
• 3 × auto-sensing Gigabit RJ45 network ports (LAN/WAN/Failover modes)
• PoE+ support (IEEE 802.3at) for power and network connectivity
• USB 3.0 port for external storage and backups
• SD card slot for call recording and system backup
• Supported audio codecs: Opus, G.711 A/u-law, G.722, G.726, G.729A/B, iLBC, GSM
• Supported fax: T.38
• Security protocols: SRTP, TLS, HTTPS, SSH, 802.1X authentication
• ZeroConfig provisioning for Grandstream endpoints
• Dual firmware image and system recovery protection
• Web-based GUI for system management and configuration
• Compatible with GDMS and Grandstream Wave app
• Open-source Asterisk 16 telephony platform
• Power input: 100–240 VAC, 50/60Hz
• Power output: 12V DC, 1.5A or via PoE+
• Dimensions: 270 mm × 175 mm × 36 mm
• Weight: 705 grams
• Operating temperature: 0°C to 45°C
• Humidity: 10% to 90% non-condensing
• Mounting: desktop or wall-mount

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