Skip to content


Grandstream UCM6304A 1,000 user IP PBX Voice System

UCM6304A by Grandstream
Original price $829.00 - Original price $829.00
Original price
$829.00 - $829.00
Current price $829.00

The Grandstream UCM6304A Audio IP PBX voice system supports up to 1000 users and includes a built-in instant messaging (IM), voice/web conferencing platform, and the free Wave App that allows users to communicate and collaborate from desktops, mobile devices, IP phones, and other SIP endpoints. It supports UCM RemoteConnect cloud service for remote users to offer a best-in-class hybrid platform that combines the control of an on-premise IP PBX with the remote access and system manageability of a cloud solution. By offering a high-end unified communications and collaboration solution packed with a suite of mobility, security, instant messaging, voice conferencing and collaboration tools, the UCM6300 Audio series provides a powerful business communication platform for any organization.

Product Features:

  • Supports up to 1,000 users and up to 120 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
Product Specifications:
  • Analog Telephone FXS Ports: (4) RJ11 ports
  • (3) Self-adaptive Gigabit ports with PoE+
  • Peripheral Ports: (2) USB 3.0, (1) SD card interface
  • LCD Display: 320x240 color
  • Reset switch: Yes
  • QoS: Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
  • Universal power supply:
  • Input: 100 ~ 240VAC, 50/60Hz
  • Output 12VDC, 1.5A
  • Users: 1,000
  • Concurrent Calls (G.711): 150
  • Max. concurrent SRTP calls (G.711): 150
  • Maximum Attendees of Conference Badges: 7 meeting rooms and up to 120 parties
Product Includes:
(1) Grandstream 1,000 User IP PBX Voice System
(1) 12VDC power cord