This IP-PBX Phone System from Grandstream (UCM6304) is designed specifically for small business who need 4 analog lines (PSTN/FXO) capacity, 4 analog extension (FXS) with larger expansion trunk options for VoIP telephone lines. This SOHO (Small Office – Home Office) and medium sized business system has all features included at no extra license or monthly cost! This UCM 6304 offers one of the lowest TOC / Total Ownership costs on the market today.

With more and more businesses moving to VoIP (Voice-over-IP) telephone line service – this in house PBX System Model can handle the needs of most companies. It offers Video and Audio Conferencing for local and remote workers. also now provides pre-ship Configuration Services, as well as Extended Warranty options.


  • Auto-Attendants / IVR (Interactive Voice Response).
  • Call Center Set-up + Call Reporting Functions.
  • Live Built-in Auto/Manual Call Recording.
  • CDR – Call Detail Records.
  • Zero-Config provisioning (for IP Phone Extensions).
  • Call Park/Orbit, Hold, Transfer, Follow-me,
  • Time Mode Scheduling.
  • Video Calling Capabilities.
  • Automated System Back-ups.
  • Web based PC and Mobile App based calling functions.
  • Fax to email, and much more!

Additional information