These award-winning IP PBXs offer an advanced set of features with no licensing fees, upgrade fees or costs per features. Enjoy smooth and easy network integration with the UCM series of IP PBXs. Support from 500 users, all the way up to 2000 users on our UCM6510 series, these IP PBXs provide the anchor to any communications network solution.

UCM6200
UCM6202 and UCM6204 support up to 500 users and 30/45 concurrent calls, UCM6208 supports up to 800 users and 100 concurrent calls Auto Discovery and Zero Configuration of Grandstream SIP endpoints
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UCM 6100 SERIES
Supports up to 500 SIP endpoint registrations, up to 60 concurrent calls and up to 32 conference attendees 1GHz ARM Cortex A8 processor 512 MB DDR Ram, 4GB NAND Flash Integrated 2/4/8/16 PSTN trunk FXO
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UCM6510
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,
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