Grandstream UCM6300A Audio IP PBX — 250 Users, 50 Concurrent Calls, 3 Gigabit Ports, PoE+, Wave App, Asterisk-Based Unified Communication Platform

The UCM6300A is part of Grandstream’s UCM6300 Audio Series, an enterprise-grade Unified Communication & Collaboration Solution designed for modern business environments. It unifies essential business communications, from voice and instant messaging to audio conferencing and remote access, all on one secure, scalable platform.

Grandstream UCM6300A is supporting up to 250 users and 50 concurrent calls, it includes an integrated instant messaging and audio conferencing server, along with the free Wave App for easy mobile, desktop, and web-based communication.

Grandstream UCM6300A is built on Asterisk 16, the UCM6300A offers high-performance telephony features, zero-configuration provisioning of Grandstream SIP endpoints, advanced security with TLS, SRTP, HTTPS, and automated NAT traversal for remote user connections via UCM RemoteConnect.

Grandstream UCM6300A features 3 Gigabit Ethernet ports with integrated PoE+, a 320×240 color LCD touchscreen, and a rich suite of call features like IVR, call queues, call recording, BLF, voicemail to email, and conferencing.

Grandstream UCM6300A is ideal for small to mid-sized businesses seeking a reliable, on-premise PBX with the flexibility of cloud-like remote management and mobile UC tools.

🎯 Key Features:

• Supports up to 250 users and 50 concurrent calls

• 3 Gigabit network ports (switched, routed, or dual mode) with PoE+

• Integrated NAT router with firewall and fail2ban security

• Built-in audio conferencing: 3 bridges, up to 50 participants

• Instant Messaging & Wave App for voice and IM via desktop, web, Android, and iOS

• Zero-config provisioning for Grandstream SIP endpoints

• Advanced security: Secure boot, random default passwords, TLS, SRTP, HTTPS, SSH

• API for third-party integrations (CRM, PMS, and more)

• Codec support: Opus, G.711, G.722, G.726, G.729, iLBC, GSM, T.38 for Fax-over-IP

• QoS support at Layer 2 and Layer 3

• UCM RemoteConnect cloud service for secure, remote access without manual NAT configuration

• Fully customizable IVR (up to 5 layers) and multi-language support

• Call center features: configurable call queues, skills-based routing, in-queue announcements

• Up to 50 SRTP-encrypted concurrent calls

• Supports up to 1500 users and up to 200 concurrent calls
• Zero configuration provisioning of Grandstream SIP endpoints
• Built-in Instant Messaging (IM), Audio Conferencing & Web Meetings platform that supports access from computers, mobile devices, and SIP endpoints
• Free Wave App allows easy voice & Instant Messaging (IM) communications using desktops, Web, and Android/ iOS devices
• API available for third-party integrations, including CRM and PMS platforms
• Advanced security protection with secure boot, unique certificate and random default password to protect calls and accounts
• Three Gigabit auto-sensing RJ45 network ports with integrated PoE+ and support NAT router
• Automated NAT firewall traversal service facilitates secure remote connections
• Enhanced reliability with support for Hot Standby High-Availability and local dual deployment
• Supports Full-Band Opus voice codec, jitter resilience up to 50% packet loss
• Compatible with GDMS for cloud setup, management, and monitoring
• Based on Asterisk* version 16 open source telephony operating system