Grandstream UCM6510, IP PBX appliance, 1 E1/T1 port, 2 FXO ports, 2 FXS ports, 2000 SIP endpoint registrations, 200 concurrent calls, up to 64 conference attendees, IVR
Grandstream UCM6510, IP PBX appliance, 1 E1/T1 port, 2 FXO ports, 2 FXS ports, 2000 SIP endpoint registrations, 200 concurrent calls, up to 64 conference attendees, IVR
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