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Grandstream UCM6304 IP PBX Appliance

Grandstream UCM6304 IP PBX Appliance

The Grandstream UCM6304 IP PBX provides a platform that unifies all business communication on one centralized network, including voice, video calling, video conferencing, video surveillance, web meetings, data, analytics, mobility, facility access, intercoms and more. It supports up to 2000 users and includes a built-in web meetings and video conferencing solution that allows users to connect from the desktop, mobile, GVC series devices and IP phones. The UCM6304 can be paired with the UCM6300 ecosystem to offer a hybrid platform that combines the control of an on-premise IP PBX with the remote access of a cloud solution. The UCM6300 ecosystem consists of the Wave app for web and mobile, which provides a hub for collaborating remotely, and UCM RemoteConnect, a cloud NAT traversal service for ensuring secure remote connections. The UCM6304 also offers cloud setup and management through GDMS and an API for integration with third-party platforms.

New: $744.95
Availability: In Stock
Manufacturer: Grandstream   |   SKU: GRA-UCM6304

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Grandstream UCM6304 Features

  • Color touch screen display (320 x 240)
  • Supports up to 2000 users and up to 300 concurrent calls
  • 4 analog FXS ports (RJ11)
  • 4 analog FXO ports (RJ11)
  • 3 Gigabit auto-sensing RJ45 network ports with integrated PoE+ and support NAT router
  • Zero configuration provisioning of Grandstream SIP endpoints
  • Built-in conferencing & meetings platform; supports desktop, Wave app, and SIP endpoints
  • Wave for Android, iOS, Chrome and Firefox browsers allows communication with all UCM6300 users and solutions
  • 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
  • Automated NAT firewall traversal service facilitates secure remote connections
  • Supports Full-Band Opus voice codec and H.264/H.263/ H.263+/H.265/VP8 video 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


  • Compatible with a variety of SIP compatible endpoint devices including IP desk phones, IP conference phones, Video IP phones, desktop and mobile softphones and applications, analog terminal adapters (ATA)
  • Compatible with SIP trunks
  • Compatible with analog telephone lines (POTS, FXO)
  • Compatible with analog telephone stations (FXS)


  • Grandstream UCM6304
  • (2) 12V power adapters
  • Network cable