Grandstream UCM6302A IP PBX (Audio Only)

The Grandstream UCM6302A IP PBX is a reliable and cost-effective unified communications solution designed for businesses that require robust audio-only functionality without recurring license fees. Supporting up to 500 users and 75 concurrent calls, the UCM6302A offers powerful voice, IM, and audio conferencing tools built into a secure on-premise system with optional cloud connectivity. Part of the UCM6300 Audio Series, it includes access to Grandstream’s Wave app, built-in IM and audio web meetings, and UCM RemoteConnect for seamless remote access. Whether deployed for SMBs or branch offices, the UCM6302A delivers scalable, high-performance telephony with no per-user subscription fees.

Product Features

All-in-one IP PBX with no license fees
Eliminate ongoing costs with a fully-featured PBX that supports voice calls, instant messaging, conferencing, and collaboration with no monthly per-user charges.

Reliable audio communication for SMBs
Handles up to 500 users and 75 concurrent calls, making it ideal for small to mid-sized businesses seeking streamlined audio communications without video overhead.

Built-in IM and conferencing platform
Supports audio web meetings and instant messaging (IM) across mobile, desktop, and SIP devices using the included Wave app for Android, iOS, and web browsers.

PoE-enabled gigabit networking
Equipped with three auto-sensing Gigabit RJ45 ports with PoE+ for simplified cabling, NAT routing, and remote provisioning capabilities.

Secure cloud-enabled deployment
Supports UCM RemoteConnect for encrypted NAT traversal, and integrates with GDMS for cloud-based monitoring, provisioning, and updates.

Advanced voice quality and reliability
Incorporates full-band Opus codec, adaptive jitter buffer, and resilience to up to 50% packet loss for consistently clear calls.

Third-party system integration
Offers an open API for seamless integration with popular CRM, PMS, and business applications to enhance operational workflows.

Enterprise-grade security
Features secure boot, device-specific certificates, and randomized passwords to safeguard accounts and prevent system tampering.

Product Specifications

• Users: Up to 500
• Concurrent calls: Up to 75
• Built-in applications: Instant messaging (IM), voice meetings, audio web conferencing
• App support: Wave app for Android, iOS, Chrome, Firefox
• API integration: Compatible with CRM, PMS, and third-party platforms
• Security: Secure boot, unique certificate, random default password
• Networking:
  • 3 x Gigabit RJ45 ports (PoE+, auto-sensing)
  • NAT router support
• Cloud management:
  • Compatible with GDMS for cloud setup, monitoring, provisioning
  • Supports UCM RemoteConnect for secure remote access
• Voice codecs: Full-Band Opus, G.711, G.722, G.729, and more
• Resilience: Jitter buffer with 50% packet loss tolerance
• Operating system: Based on Asterisk v16
• Deployment modes: Supports hot standby (HA) and local dual deployment
• Provisioning: ZeroConfig for Grandstream SIP endpoints

Ideal for organizations needing:

• A cost-effective audio-only PBX with no recurring licensing fees
• Support for voice conferencing, IM, and SIP endpoints
• Remote collaboration and cloud management tools
• Secure and scalable VoIP deployment with Grandstream hardware