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A powerful yet easy to manage voice, video, data, and mobility communications platform has never been more achievable than when anchored with Grandstream’s series of UCM IP PBXs. The UCM series of IP PBXs offer an extensive set of unified communication features in an easy-to-manage on premise solution with no licensing fees, upgrade fees or costs per features. Our UCMs range from small and medium business deployments to small and medium enterprise solutions.


  • Supports up to 2000 SIP endpoint registrations, up to 200 concurrent calls and up to 64 conference attendees
  • 1GHz quad-core Cortex A9 processor
  • 1GB DDR3 Ram, 32GB Flash
  • 1 Integrated T1/E1/J1 interface, 2PSTN trunk FXO ports, 2 analog telephone/Fax FXS ports with lifeline capability
  • Gigabit network ports with Integrates PoE, USB, SD card, integrated NAT router
  • Comprehensive security protection using SRTP, TLS and HTTPS with hardware encryption accelerator
  • Quickly setup and provision Grandstream endpoints using the Auto-Discovery and Zero Config feature within the product’s web user interface

  • Supports up to 3000 users and up to 450 concurrent calls
  • 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 & 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
  • Three Gigabit auto-sensing RJ45 network ports with integrated PoE+ and support NAT router
  • 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

  • UCM6202 and UCM6204 support up to 500 users and 50/75 concurrent calls, UCM6208 supports up to 800 users and 100 concurrent calls
  • Auto Discovery and Zero Configuration of Grandstream SIP endpoints
  • Integrated 2/4/8 PSTN trunk FXO ports, 2 analog telephone FXS ports with lifeline capability and up to 50 SIP trunk accounts
  • Gigabit network ports with Integrates PoE, USB, SD card
  • Supports up to a 5-level IVR (Interactive Voice Response)
  • Built-in call recordings server; recordings accessible via web user interface
  • Built-in Call Detail Records (CDR) for tracking phone usage by line, date, etc.
  • Supports multi-language auto-attendant and call queue to efficiently handle incoming calls
  • Strongest possible security protection using SRTP, TLS and HTTPS encryption
  • Supports any SIP video endpoint that uses the H.264, H.263 or H.263+ codecs

  • Connects and constantly monitors two UCM6510 together for high availability
  • Smart failover solution that automatically switches to a hot-standby secondary UCM6510 if the primary one fails
  • Up to 14 LED indicators showing real-time status of all of the telecom lines, network links, auxiliary devices, etc
  • Gratuitous ARP forces SIP endpoints to refresh the MAC address of the new UCM6510 without interruptions
  • Fast 10 to 50 second system switching time depending on the number of registered endpoints