Grandstream UCM6308 IPPBX Support up to  1500 Users and 200 Concurrent calls

• Zero configuration provisioning of Grandstream SIP endpoints
• Built-in conferencing & meetings platform; supports desktop, Wave app, and SIP endpoints

Maximum Call Capacity: Users: 250
Concurrent calls (G.711): 50
Max concurrent SRTP calls
(G.711): 50

GCC6010 is a powerful unified communications gateway built for small and medium businesses. It combines an IP PBX system, next-generation firewall, high-speed VPN router, and a Gigabit network switch with PoE into a single device—delivering secure, scalable, and centralized VoIP and networking solutions managed via Grandstream GDMS.