📦 Product Overview
The Grandstream UCM6308A Audio Series IP PBX is a scalable, on‑premise VoIP telephone system designed for medium and large enterprises that require advanced unified communications features. It delivers reliable voice communications, built‑in conferencing and messaging, secure remote connections, and easy cloud‑based management — all without recurring software subscription fees.
🔑 Key Features
✅ Supports up to 1500 users and 200 concurrent calls (150 secure SRTP calls) — ideal for busy offices.
✅ Built‑in Instant Messaging (IM), audio conferencing and web meetings platform accessible from computers, mobile devices, IP phones, and SIP endpoints.
✅ Includes the free Wave App for voice calls and messaging on Windows, macOS, Android, and iOS.
✅ Cloud‑based management & provisioning via Grandstream Device Management System (GDMS).
✅ Integrated automated NAT traversal and firewall for secure remote access and simpler remote setup.
✅ Zero‑configuration provisioning for Grandstream SIP endpoints.
✅ High‑availability support for business continuity and failover.
✅ API support for CRM, PMS, and third‑party integration.
✅ Robust security features: secure boot, unique certificates, randomized default passwords, and encrypted signaling/voice (TLS/SRTP).
📊 Technical Specifications (Quick Specs)
| Specification | Details |
|---|---|
| User Capacity | Up to 1500 SIP/User accounts |
| Concurrent Calls | 200 (150 SRTP) |
| Audio Meeting Rooms | Up to 9 with up to 150 participants |
| FXS Ports | 8 x RJ11 (for analog phones) |
| FXO Ports | 8 x RJ11 (for PSTN connectivity) |
| Ethernet Ports | 3 x Gigabit RJ45 (PoE+) |
| Other Ports | 2x USB 3.0, 1x SD card slot |
| Codec Support | Opus, G.711, G.722, G.729, T.38 (fax) |
| Security | TLS, SRTP, HTTPS, SSH, firewall, secure boot |
| Management | Web UI, GDMS cloud management |
| Operating System | Asterisk‑based telephony OS v16 |
🛠 Included in the Box
Depending on distributor, typically includes:
• UCM6308A IP PBX appliance
• Ethernet cable
• Power adaptor(s)
• Quick Installation Guide
📌 Use Case Scenarios
✔ Multi‑office enterprises with heavy call traffic.
✔ Organizations needing unified voice, conferencing, and messaging.
✔ Remote workplaces leveraging Wave App & UCM RemoteConnect.
✔ Businesses requiring secure and scalable communications infrastructure.
🔗 Useful Official & Reference Links
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📄 Official Grandstream UCM6300 Audio Series Datasheet (PDF) — Core specs and features (Grandstream) Download Datasheet (English)
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🔄 Official Firmware & Support (UCM6308A) — Latest firmware downloads & updates (Grandstream Support) UCM6300 Firmware Page
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🌐 Grandstream Product Page – UCM Series — Overview of the entire IP PBX lineup (Grandstream) UCM Series IP PBXs
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📘 User Manuals & Guides — available via reseller sites for installation reference (e.g., Quick Installation Guides) View Manuals & Documents
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